Knowledge center

There is no single best type for every case. New roofs usually benefit from an integrated system (waterproof membrane + thermal insulation + protection), while existing roofs where you don't want to remove tiles may suit spray or liquid systems. The roof's condition, the climate and the budget decide after inspection.

Often yes, using clear liquid coatings or systems applied over tiles after treating the joints. But if the leak comes from failed original insulation under the tiles or poor slopes, a lasting fix requires removal.

Ideally well before the rainy season and on dry days. Summer work is possible with working hours set to the manufacturer's application temperature range.

It reveals any defect in seams or edges before the waterproofing is covered with tiles or other layers, so it can be fixed at no extra cost.

Roof thermal insulation reduces heat transfer to the top floor, easing the cooling load. The saving depends on the building, insulation type, thickness and usage pattern.

Simple test: close the inlet valve to the tank, stop all use, mark the water level and watch it for several hours. A drop without use strongly indicates a leak that needs inspection.

Epoxy manufactured and approved specifically for contact with drinking water is safe once fully cured per the manufacturer's instructions. Check the material's certificate and never use industrial grades not intended for this.

It depends on the tank's size, condition and the material's curing time. Typical household tanks take from one day to a few days including curing before refilling.

Yes. Cleaning, removing deposits and drying are essential for adhesion. Coating over a dirty or damp surface fails quickly.

Underground tanks face groundwater and soil pressure from outside, so treatment against water entering from outside matters more. Rooftop tanks face heat and sun, so they may also need external thermal insulation.

Often yes, if the leak comes from joints or specific edges, using injection or clear coatings over the tiles. If the source is a broken pipe or fully failed original waterproofing, limited partial removal is necessary.

Usually one of three causes: failed waterproofing under the tiles, leaking supply or drain pipes, or leaking joints around the shower or bathtub. Electronic leak detection pinpoints the cause before repair.

It is normally turned up the lower part of the surrounding walls and taken higher in the shower area, which gets the most water, following the material and design specifications.

It is recommended, especially on upper floors and around the sink and dishwasher, because any leak there reaches the ceiling below.

Closed-cell foam resists water, but it needs a protective top coat to keep its properties against sun and wear. The full system (foam + protection) gives reliable waterproofing and thermal insulation.

Because it was left exposed to UV without a protective coat, or the coat was not renewed. Periodic maintenance of the protective layer extends the system's life.

Yes, it is one of the best solutions for metal roofs: it bonds to them, covers seams and fasteners and greatly lowers internal heat, with a primer suited to metal.

There may be an odour during and briefly after spraying, so it is applied with good ventilation and occupants kept away from the work area until the reaction completes.

Thermal insulation reduces heat transfer; waterproofing stops water. Some materials partly do both, like polyurethane foam, but roofs usually need both functions in an integrated system.

The Saudi Building Code for energy conservation includes thermal insulation requirements for the building envelope, applied through permitting for new buildings. Check with your engineering office for your building's exact requirements.

Yes. The easiest point is the roof, via spray or boards on top. Walls can be insulated internally with boards or externally with façade systems, depending on the building.

The roof first, then walls exposed to the sun for long periods, usually west and south, with attention to windows as a major heat-loss point.

Bituminous membranes, liquid coatings (polyurethane, acrylic, bitumen), cementitious waterproofing and crystalline waterproofing. Each suits particular locations.

This is efflorescence: moisture moving through the wall carries salts to the surface, where the water evaporates and the salts remain. It signals a moisture problem whose source needs treatment.

Damp-resistant paints improve appearance for a while but don't treat the water source. The lasting fix is treating the source, then waterproofing.

Modern equipment locates leaks accurately in most cases, and accuracy increases with the technician's experience and by combining methods (acoustic, thermal, moisture, pressure).

You can run a first test: close all taps and watch the water meter. If it moves, there is a leak in the network after the meter. Pinpointing the exact location needs specialist equipment.

No. Detection itself involves no demolition. Once located, the repair is limited to that exact spot instead of random breaking.

Yes, it improves thermal comfort, but it slightly reduces room size and may not solve thermal bridges where walls meet the ceiling. External insulation is more efficient but costs more.

By cutting the moisture path (horizontal injected barrier or re-waterproofing the foundations), then repairing the plaster with suitable materials, not by painting alone.

Yes, especially in cities with high groundwater or saline soil. Its cost is small compared with repairing corroded reinforcement later.

At least two coats after primer with full coverage are usually recommended; in highly saline or groundwater areas a membrane is preferred. The supervising engineer sets the final specification.

Lightweight cork and foam panels improve echo inside a room but don't effectively stop sound travelling. Stopping transmission needs mass, decoupling and absorbing material inside the wall.

Doors, windows and small gaps around them. Any unsealed gap greatly reduces the performance of an insulated wall.

The bucket test: place a filled bucket on the pool step so its water level matches the pool's, then compare the drop in both after a day. If the pool drops noticeably more, there is a leak.

Yes. A roller-coat or self-levelling system gives a glossy, seamless, easy-to-clean surface. In majlis rooms, choose a colour and topcoat that suit the lighting and deal with ground-floor slab moisture before application, because rising damp is one of the most common causes of epoxy blistering on ground floors.

Roller coats are thin layers that protect the surface, stop dusting and suit light traffic. Self-levelling systems are thicker, give a flat smooth finish and take more traffic. Epoxy mortar with quartz sand is for heavy loads and forklifts. The use and loads decide the right system.

You must wait until the concrete's moisture falls to the limit set by the system's data sheet; some products require less than 4% moisture by weight and no rising damp. If the schedule can't allow the wait, primers designed for damp substrates are used per the manufacturer's recommendation.

The most common reasons: applying on a smooth surface without grinding, leftover dust, rising damp from the ground, or applying over a weak cement layer. The fix starts by removing the detached coating and identifying the cause before reapplying; otherwise the failure repeats.

It varies by product and temperature. Data sheets for some systems state light foot traffic after about a day at 20°C and full cure after about seven days. In car parks and warehouses, vehicles and forklifts should not enter before full cure.

Yes, but only grades approved for contact with drinking water, and this is carried out under the tank insulation service with its own preparation and disinfection procedures. Industrial floor epoxy is not intended for tanks and must not be used in them.

Polyurea comes from reacting isocyanate with amines, an extremely fast reaction that needs no catalyst, so it sets within seconds into a tough elastic membrane. Polyurethane comes from isocyanate reacting with polyols and is relatively slower; it includes thermal-insulating foam and liquid coatings. Polyurea is often used as a protective, waterproof layer over foam.

Only if the complete system (primer and coating) holds a drinking-water suitability certificate such as NSF/ANSI/CAN 61, is applied per the manufacturer's instructions and fully cured, and the tank is then disinfected and rinsed before filling. General or hybrid grades that aren't approved are not used inside drinking-water tanks.

Usually because air or moisture escapes from the concrete pores during spraying, especially when the surface is hot. Prevention means a suitable pore-sealing primer, spraying when the surface temperature is lower, and confirming the concrete is dry before starting.

Yes. It bonds to metal after rust removal and a suitable primer, and covers seams and fasteners in one continuous layer. If lowering heat is also a goal, polyurethane foam is sprayed first and then covered with polyurea or a reflective protective coating.

It is used on car-park decks and walkways for its abrasion resistance and flexibility over hairline cracks, with a wear-resistant topcoat and anti-slip aggregate. The system should be designed with the engineer to detail expansion joints and drainage points.

Yes, if inspection proves the old layer is dry, bonded to the substrate and chemically compatible with the new system. If it is saturated, detached or blistered, overcoating traps moisture and transfers the problem to the new layer, so those areas must be removed first.

With a thermal scan at the right time, moisture meters, then confirmation with small core cuts that are repaired after inspection. Appearance alone is not enough, because the surface can look sound while the layers beneath are wet.

A test that measures how strongly a layer bonds to the substrate, such as the pull-off test for coatings on concrete per ASTM D7234, or a practical test applying a sample of the new system to a small area. It shows whether the old layer can serve as a base for the new system.

When a large share of the insulation is wet or detached, slopes are wrong and cause ponding, or many layers from past repairs have built up. In these cases removal and a new system from scratch is more economical in the long run. The platform's building rehabilitation guide explains how to weigh the options.

It depends on the coating type, thickness and sun exposure. The IBHS guide to foam roofs states that protective coatings are typically reapplied every 10 to 20 years depending on type and original thickness, with inspections twice a year to catch wear early.

Honeycombing is voids and exposed coarse aggregate without mortar, caused by poor compaction or grout leaking from formwork. Surface honeycombing is treated with repair mortar, but deep honeycombing in columns and beams, or any that exposes steel, needs structural assessment because it reduces the section and exposes rebar to corrosion.

Epoxy bonds dormant, dry cracks and restores continuity. Polyurethane seals damp or leaking cracks. Active cracks that move with temperature or loads are not bonded with a rigid material until the cause of movement is identified and treated.

When rebar corrodes because of carbonation or chlorides, the rust occupies several times the volume of the original steel and pushes on the cover until it cracks and falls off. A proper repair removes all damaged concrete around the steel and treats the steel before rebuilding, rather than plastering over rust.

No. Plaster hides the crack temporarily, then it returns because the cause remains. First identify the crack's type and cause, such as shrinkage, thermal movement, rebar corrosion or settlement, then choose injection, repair or structural assessment accordingly.

We carry out repair works to a licensed structural engineer's design in cases that affect an element's capacity, such as deep honeycombing in columns or loss of rebar section. In those cases work does not start before the design and material specifications are approved.

By monitoring it over time with a crack-width gauge or dated marks at both ends, and noting whether it widens with temperature or load changes. A moving crack needs a flexible treatment or structural assessment; a dormant one can be bonded by injection.

Both are polymer-modified bitumen. SBS rolls are more flexible and tolerate substrate movement and day-night temperature swings, while APP rolls resist high heat and UV better. The type is chosen by location and whether it stays exposed or is covered with tiles, following the product's data sheet.

A membrane is waterproofing only and does not meaningfully reduce roof heat. On exposed roofs it is usually combined with thermal insulation such as extruded polystyrene boards or spray foam, then a protection layer and tiles, giving a system that both stops leaks and reduces heat transfer.

Many roofs are done with a single layer of suitable thickness, while some roofs and foundations exposed to water pressure are designed with two layers, crossed or staggered. The decision depends on the project's engineering specification, the roof's condition and the exposure, not on one rule for every building.

Common causes: torching onto a damp or dusty surface, primer that hadn't dried, insufficient welding heat at laps, or leaving the rolls exposed to sun without protection. A blister traps air or moisture under the layer; it is treated by opening the area, drying it and re-welding with a cover patch.

The roof is flooded for a sufficient period after temporarily plugging the drains, then the ceiling below is checked; guidance for this test exists, such as ASTM D5957. It reveals seam and edge defects before they are covered with screed and tiles, while repair is still easy and inexpensive.

Yes. They are torched onto the outer face of footings and buried walls after preparation, with corner fillets and treated penetrations, then protected with boards before backfilling. In basements exposed to a groundwater table the system is designed with the engineer, because water pressure requires special detailing.

Sewage produces hydrogen sulfide gas, which bacteria on damp surfaces above the water line convert into sulfuric acid that gradually attacks the concrete, especially the roof and upper walls. That is why ordinary waterproofing is not enough inside a septic tank; an acid-resistant layer is needed.

No. It must be fully emptied, washed and its surfaces dried to the extent the material requires, because coatings don't bond to contaminated or wet surfaces. Emptying is scheduled together with stopping or reducing use during the work and curing period.

Yes. Septic tanks and manholes are confined spaces that may contain toxic and flammable gases and lack oxygen. Work is carried out after ventilation and gas testing, with protective and rescue equipment and an attendant outside; no entry is allowed without these measures.

Indicators include damp or settling ground around the tank, water level changing without use, and odours in the adjacent soil. Visual inspection after emptying confirms it, and in some cases the water level is monitored for a set period after temporarily plugging the inlets.

A drinking-water tank needs materials approved for contact with potable water, while a septic tank needs materials resistant to the acids and chemicals in sewage. The materials are not interchangeable, and septic tank coatings are never used in drinking-water tanks.

Yes. The service includes sealing cracks and leaks around pipes in manholes, lining them internally, and treating corroded cover frames. Tight covers and proper ventilation reduce odours and stop rainwater entering the sewer system.

Periodic cleaning and disinfection is generally recommended, often suggested once or twice a year, with more frequent cleaning depending on incoming water quality, the amount of sediment and the condition of the tank and its covers. A tank should also be cleaned after any maintenance or repair inside it, or when a change in the water is noticed.

A chlorine disinfectant suitable for drinking water, such as sodium or calcium hypochlorite, is used at a set concentration and contact time, then the solution is drained and the tank rinsed before filling. Safety comes from choosing a product intended for drinking water and sticking to the concentration and rinsing, not from the product alone.

Cleaning and disinfection remove sediment and growth and reduce contamination inside the tank, but they don't change the quality of water arriving from the source. If you need to confirm the water is fit to drink, it is advisable to have it analysed at a laboratory accredited by the competent authorities.

After draining the disinfection solution, rinsing and refilling, residual chlorine is measured, and the water is used once it is within suitable limits. A faint chlorine smell may be noticed in the first hours and fades gradually with use.

It varies with the tank's size, the amount of sediment and its type. Small rooftop and plastic tanks are usually done within part of a day, while large ground tanks may take longer because of emptying, suction, contact time and rinsing.

Cracks, leaks and lining damage are documented with photos in the report. If the tank needs repair or internal lining, this is done under the tank insulation service with materials approved for drinking water, and the tank is disinfected again after the lining cures; a building leak detection may be needed if the tank level drops without consumption.

Before buying an existing property, to know its defects and the cost of fixing them before signing; when taking over a villa or building from the contractor, to document snags and have them fixed; before the warranty period ends; or when damp and leaks appear with no known source.

It includes a description of the property and inspection scope, and a list of findings organised by location and system: roofs and insulation, visible structure, moisture, plumbing, electrics and finishes. Each finding has a photo, a severity rating and a proposed treatment, with a note on anything that needs further specialist inspection.

No non-destructive inspection reveals everything. Thermal cameras and moisture meters uncover many hidden problems without breaking anything, but some defects only show when opened up or over time. That is why the report states the inspection's limits and any areas that could not be accessed.

It detects temperature differences on surfaces, which may be linked to moisture, leaks or missing insulation. It needs a sufficient temperature difference to give a clear result, and its readings are confirmed with moisture meters or pressure tests; no decision is based on the thermal image alone.

It includes a visual inspection of exposed structural elements, recording cracks, honeycombing, rebar corrosion and deformations. If there are signs affecting the building's safety, the report recommends an assessment by a licensed structural engineer, which may involve specialist tests; the visual inspection is not a substitute for it.

The visible parts are inspected visually: panels, breakers, outlets and signs of overheating or exposed wiring, and they are scanned with the thermal camera to spot hot points. Any finding that needs electrical testing or repair is referred to a qualified electrician.

In most cases yes, if the structural frame is sound or repairable. If the assessment shows widespread deterioration in columns and slabs, the comparison may differ. The decision isn't made before a technical assessment, with a structural engineer involved when structural defects exist.

Structural work, facade modifications or adding space usually require a municipal permit through the Balady platform, while simple interior finishing may not. Requirements vary by type of work and city, so they are checked before starting.

With the assessment, then logically from bottom to top and inside to outside: structural and damp issues first, then insulation, then services, and finally finishes. Starting with paint and tiles before treating damp and services means redoing work later.

For partial restoration it is often possible by phasing the work and sealing off work areas. For full restoration including plumbing, electrical and structural repair, it is better to vacate the house for the occupants' safety and faster execution.

It depends on the scope, the building's size, permit processing time and material availability. Partial restoration may take weeks, and full restoration may extend over months. A phased schedule is given after assessment and scoping.

Yes. It covers treating cracks and flaking on facades, repairing damaged concrete, then re-plastering, painting or cladding as appropriate, while treating the sources of water entering exterior walls before finishing.

Repair on failure starts after the problem occurs and often after collateral damage, such as a ceiling ruined by a leak. Preventive maintenance inspects elements before they fail and treats small beginnings, reducing sudden failures and long-term cost.

It varies with the home's age and condition, but a common schedule includes two main visits a year: before summer to check AC, tanks and insulation, and before the rainy season to check roofs and drains, with interim visits as needed.

The contract sets the number of scheduled visits, the inspection items per visit, the covered works, and how emergency faults and spare parts are handled. It is designed after the first visit and inventory so it fits the home's actual condition.

We coordinate AC checks within the seasonal schedule with specialist technicians, and follow up on what relates to our work, such as AC condensate drainage and its effect on insulation and walls. Technical servicing of the units themselves is done by AC technicians.

Periodic cleaning and disinfection is recommended, and many authorities advise once or twice a year, along with checking the lid, float valve and tank insulation. This is reviewed against the competent authority's requirements in the city.

Because any defect in fusion joints or fittings shows up during the test and is easy to fix, whereas finding it after plaster and tiles means breaking and refinishing. The supply line is pressurised and monitored for a set time to confirm the pressure holds.

Usually relying on gravity from a low roof tank, an unsuitable pump, small pipe diameters, or clogged valves and filters. The fix starts with finding the cause and may involve installing a booster pump or rerouting the line.

PPR pipes don't rust and are heat-fused, so they have fewer leak points than older metal pipes with threaded joints. But their quality depends on choosing the right pressure rating and accurate fusion.

It depends on the number of users and bathrooms and the usage pattern. Storage heaters suit simultaneous use, while instantaneous heaters suit distant or low-use outlets. What matters is fitting the safety valve, earthing the heater and connecting it to a suitable electrical circuit.

Close all taps and watch the water meter; if it keeps turning, there is a leak. Its location is then pinpointed with leak detection equipment without random breaking, and only the damaged section is repaired.

Common causes: trap water drying out at unused outlets, no venting in the drainage network, incorrect slopes causing standing water, or a leaking joint. The fix depends on identifying the exact cause.

The most common causes are moisture in the wall from a leak or rising damp, painting on an unprepared or dusty surface, skipping the primer, or painting over a weak old coat. Repainting without treating the cause brings the same problem back.

They are soluble salts carried by moisture from inside the wall and deposited when water evaporates at the surface. Treatment starts by stopping the moisture source, then removing the salts mechanically and letting the wall dry, then applying a salt-resistant primer before painting.

Gypsum work, suspended ceilings and lighting wiring are done before painting, then putty and sanding, then primer and paint coats. Painting before the other works are finished exposes it to damage and patching.

Paints with a lower content of volatile solvents, so their odour is milder and their emissions lower during and after painting. They suit bedrooms, children's rooms and poorly ventilated spaces; check the manufacturer's data for their actual content.

Paint that resists UV and heat and holds its colour, such as acrylic or silicone paints made for exterior use, with a suitable primer. More important is treating cracks and water entering the wall before painting.

Usually a primer and two finish coats; dark colours or a drastic colour change may need an extra coat. The manufacturer's intervals between coats are followed.

They may open some minor blockages temporarily, but they don't remove grease built up on the pipe walls; some can damage pipes or seals with repeated use and are dangerous on skin contact or when mixed with other cleaners. Recurring blockages need mechanical clearing or water jetting and identification of the cause.

The camera reveals what can't be seen from outside: a broken pipe, a wrong fall that collects sediment, tree roots, or a separated joint. This determines whether the problem is a blockage to clean or a defect to repair, and pinpoints the repair location instead of random breaking out.

The most common cause is fats and oils poured into the sink that then harden inside the line with food waste. Prevention means not pouring oil down the sink, using a sink strainer, flushing the line periodically, and a grease trap in commercial kitchens.

Yes. A blockage raises the water level in the line and puts pressure on weak joints, which can lead to leaks under tiles or inside walls. If damp appears near drains after a blockage, instrument-based leak detection is advised to find the source.

When the camera shows a broken or sagging pipe, a reverse fall that holds water, or blockages recurring at the same point despite cleaning. In these cases the damaged section is replaced or rerouted as part of plumbing works.

Use strainers that catch hair, clean the drain cover regularly, don't throw wet wipes or solid cleaner residue into drains, and pour water into rarely used drains so the trap doesn't dry out and let odours escape.

Products registered for residential use are applied at the label doses, with children and pets kept away during treatment and until the re-entry time on the product label has passed, and fish tanks covered with their pumps switched off. Targeted baits are preferred indoors to reduce exposure.

It depends on the product and the treatment method; the re-entry time is set by the label of the product used. After returning, ventilate well and don't wipe the treated cracks and corners, so the treatment keeps working.

Before construction, the soil under the slab and around the foundations is sprayed before pouring, forming a continuous protective layer. After construction the soil is hard to reach, so it is injected through holes in floors and pavements around the building or baiting systems are used, with infested timber inspected and damaged pieces replaced.

Because the eggs are much less affected by pesticides, and bed bugs hide in cracks, mattress seams and furniture. Treatment therefore usually needs more than one visit, together with washing bedding in hot water and drying it on high heat, encasing mattresses, and reducing clutter around the bed.

Ask for the activity licence number issued by the municipality and verify it through official channels, ask for the names and registration numbers of the pesticides used, make sure the technicians are trained and use protective equipment, and request a written report of the treatment and re-entry times.

Not always. A periodic inspection programme that decides when treatment is needed is better, together with prevention through exclusion, sanitation and moisture control. Food and commercial facilities, however, often require a documented pest control programme per the competent authority's requirements.

We provide design coordination, supply, installation and maintenance, and fire system works are carried out through licensed teams and partners per Civil Defense requirements. Customers are always advised to request and verify the executing entity's licence before contracting, as this is a condition for the system's acceptance at inspection.

It depends on the building's use, area, number of floors, occupant load and type of stored goods. The engineering office determines the required system per the Fire Code and Civil Defense requirements; a small facility may need only an alarm and extinguishers, while others need sprinklers and fire mains.

Common causes include a smoke detector near a kitchen or bathroom, dust built up in detectors, a wiring fault, or a detector type unsuited to the location. The fix is to check the panel and its event log and clean detectors or replace them with a suitable type, not to disconnect the system.

Civil Defense requirements, the Fire Code and the manufacturer's instructions set inspection and maintenance intervals for each system. In practice, extinguisher gauges and locations are checked visually on a regular basis, and periodic maintenance and testing are done by a licensed entity and recorded in the maintenance log.

Even where it isn't mandatory for some homes, smoke detectors in corridors near bedrooms, a heat detector in the kitchen, a suitable extinguisher and a fire blanket are recommended. Smoke and leak sensors can be linked to a smart home system to send alerts to your phone.

Cover entrances, parking and corridors without pointing cameras at neighbours' privacy, choose suitable resolution and storage, secure the recorder with strong passwords and regular updates, and comply with applicable regulations on surveillance in facilities.

Yes, in most cases, using smart switches that fit existing boxes, wireless devices, AC controllers and battery-powered sensors. Some switches need a neutral wire that isn't in the box, so a type that doesn't need it is chosen or the wire is run where necessary.

They help by scheduling ACs, switching off devices in empty rooms and adjusting temperature remotely, but actual savings depend on usage patterns. Good thermal insulation of roofs and walls remains the biggest factor in reducing cooling loads.

The sensor sits on the floor near likely leak sources and sends an instant phone alert when it touches water. When linked to a motorised valve on the main line it shuts off the water automatically, limiting damage until the leak is traced and repaired.

Change default passwords, enable two-factor authentication, update firmware regularly, put smart devices on their own separate network, don't point indoor cameras at bedrooms, and choose devices from manufacturers that provide ongoing security updates.

Switches keep working manually, and some systems continue running automations locally through a home hub, while remote control and phone alerts stop until the connection returns. That's why systems that support local control and locks with a backup key or code are preferred.

Before the electrical wiring, to set the locations of network points, cameras, curtains, deep switch boxes and the neutral wire. Early planning is far cheaper than changes after finishing, even if installing the devices themselves is postponed until later.

In a skimmer pool the water sits slightly below the edge and skimmer openings in the wall draw off surface debris; it is simpler and cheaper. In an overflow pool the water reaches the edge and spills into a perimeter channel and then a balance tank, giving a refined look and better surface cleaning, but it needs an extra tank, more equipment and more precise execution.

Yes, structural works such as adding a pool usually require a municipal permit and drawings from an engineering office, and applications are submitted via the Balady platform. Requirements vary with the type of work and location, so the engineering office should check the current requirements for the case before excavation starts.

Because tiles and grout are not waterproofing, and water reaches the concrete through the joints. Waterproofing the shell directly and then running a fill test reveals any defect before tiling, whereas finding a leak after tiling means breaking the finish to repair it.

If the shell is structurally sound and the leak is confined to pipes, fittings, or the waterproofing and tiles, restoration is usually the better option. Through-cracks, settlement or widespread reinforcement corrosion need assessment by a structural engineer, which may end in rebuilding parts of the shell.

It depends on size, pool type, site conditions and permits. Some stages should not be rushed, such as concrete curing, the fill test after waterproofing and the curing of tiling materials, so we provide a written schedule after the survey and design approval rather than a generic duration.

With a bucket test: place a bucket of water on the pool step so both levels match, and compare the loss after 24 hours with the pump off and then with it running. If the pool drops clearly more than the bucket there is a leak, and repeating the test in both states helps distinguish the shell from the pipework.

They can if only visible areas were treated while the colony stayed in the soil, if the chemical barrier was broken by later digging or works, or if damp persists. That is why the soil around the building is treated or baits are used, with periodic follow-up and moisture repairs, and spot treatment is repeated when any new sign appears.

Liquid treatment creates a treated zone in the soil that termites pass through and are affected by; it acts faster but needs access to the soil around foundations and under slabs. Baits rely on termites carrying the material back to the colony, so they are slower but involve less drilling and disruption, and need periodic monitoring. Many cases combine both.

Household sprays kill only the termites you can see, while the colony stays in the soil and keeps attacking timber by other routes. Random spraying can push termites to change their path and delay discovery of the damage. Treating subterranean termites needs soil treatment or a planned bait system, which requires a qualified provider and registered products.

Termites do not eat concrete, but they travel through its cracks and joints to reach timber, paper and cardboard inside, damaging doors, frames, cabinets, false ceilings and documents. In concrete buildings the damage is usually to finishes and contents, and it increases in damp areas.

When preparing a new plot and before casting the ground slab, especially in agricultural areas, near palms and trees, or where termites are known to be common. The compacted soil under the slab and around foundations is treated before casting, because reaching it after construction requires harder, more costly drilling and injection.

Liquid treatment around an ordinary home is usually completed within a working day depending on the area and number of injection holes, and its effect appears within days. Baits need weeks to months to affect the colony, with monitoring visits. The survey determines the right method and schedule for the building.