Roof waterproofing in Alrass: for companies (annual contract)
In short: In Alrass (Alrass), roof waterproofing (for companies (annual contract)) begins with the roof, falls and drains survey and the moisture meter for ceilings and walls; nothing is opened until the position is clear. The centre of Alrass sits about 695 m above sea level (SRTM open elevation data). Published price: Liquid roof waterproofing (per m²), SAR 8–25 per m²; anything else is quoted after the inspection.
Before we start: what we know about Alrass
Team note on Alrass: Kashf teams serve this city and its nearby districts with the same documented inspection standard: device-based leak detection without demolition, a written report, and a clear scope before any work begins.. The centre of Alrass sits about 695 m above sea level (SRTM open elevation data).
Main roads in or near Alrass: King Abdulaziz Road, King Fahd Road, King Salman Road.
Roof waterproofing work in Alrass starts with the site's altitude. The centre of Alrass sits about 695 m above sea level (SRTM open elevation data), which means technicians check how water drains off the roof before they choose a system. Ponding water and slow runoff are the first things to look for, because they shorten the life of any surface coating. Crack lines, lifted edges and old patch repairs are also checked early, since they decide whether the existing surface can take a new layer or must be prepared first.
Several points are left to the site visit itself. The technician measures the roof area in square metres and records the length of any cracks, since liquid roof waterproofing is priced at SAR 8–25 per m², bitumen membrane at SAR 15–35 per m², and crack injection at SAR 40–120 per metre. The choice between these, and whether XPS boards at SAR 12–30 per m² are useful for insulation under a finish, depends on what the roof is like in person. Access, parapets, rooftop fixtures and the condition of drainage outlets are also judged on the day rather than from a drawing.
The information below helps the technician prepare. Note the total roof area, the number and location of cracks, the type of existing finish, and whether any water tanks or plant rooms share the same structure. Where a tank sits on the roof, internal tank coating at SAR 25–60 per m² is a separate job and should be quoted on its own line. Record any leaks seen inside the building, as their position often points to the source. Clear, measured notes like these make the annual contract scope easier to agree and reduce surprises once work begins.
For companies, an annual contract sets the scope, the visit schedule and the reports in writing.
When do you need roof waterproofing?
These are the signs most often linked to roof waterproofing:
- The old waterproofing is cracking
- Stains on the top-floor ceiling after rain
- Water pooling on the roof
Causes we see in the field
- A common cause: cracks in the roof slab.
- Damaged waterproofing around tank and AC bases — we check this before anything else.
- Wrong falls towards the drains.
Tools we use in Alrass
| Tool | What it finds | When we use it in Alrass |
|---|---|---|
| Roof, falls and drains survey | Ponding areas and the condition of the old layer | Limits: shows the condition, not the material alone |
| Moisture meter for ceilings and walls | Where water is entering now, from inside | Limits: measures the effect, not the water path |
| Flood test | Whether the waterproofing holds before it is covered | Limits: for roofs with drains and wet areas before tiling |
The steps in order
- Survey: Falls, drains and the condition of the old layer are recorded.
- Preparation: Cleaning and repairs before any new layer.
- Primer: The base coat that the system needs.
- Waterproofing layers and details: Corners, upstands and bases get their own detail.
- Flood test: The roof is flooded and checked before it is covered.
Alrass in facts and sources
| Item | Value | Source |
|---|---|---|
| District profile | Team note on Alrass: Kashf teams serve this city and its nearby districts with the same documented inspection standard: device-based leak detection without demolition, a written report, and a clear scope before any work begins. | Kashf team |
| Roads | Main roads in or near Alrass: King Abdulaziz Road, King Fahd Road, King Salman Road | Kashf data (owner) |
| District profile | The centre of Alrass sits about 695 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| Liquid roof waterproofing (per m²) | SAR 8–25 per m² | Owner price list (Alrass) |
| Bitumen membrane (per m²) | SAR 15–35 per m² | Owner price list (Alrass) |
Short answers for Alrass
What is the first step of roof waterproofing (for companies (annual contract))?
We start with survey (falls, drains and the condition of the old layer are recorded), then preparation (cleaning and repairs before any new layer).
How much does roof waterproofing cost in Alrass?
From our published price list: Liquid roof waterproofing (per m²) SAR 8–25 per m²; Bitumen membrane (per m²) SAR 15–35 per m². Quantities are confirmed at the inspection.
What do I get at the end?
A quality record with photos and the flood-test result, in a technical report that carries a verification code.
What we advise against
- Covering the waterproofing before the flood test
- Ignoring the tank bases
What you receive
You receive: a quality record with photos and the flood-test result, in a technical report with a verification code.
Practical notes for residents of Alrass
- You can message us on WhatsApp in English; the booking details are sent back to you in the chat to confirm before the visit.
- The Saudi weekend is Friday and Saturday; mention your preferred day and time when booking.
- Have access ready to the water meter, the tank hatches, the roof and the main valve; in apartment buildings the roof keys are often with the building guard (haris).
- Prices are in Saudi riyals (SAR); the final price is confirmed after the inspection, before any work starts.
Sources and method
- SRTM (NASA) open data
- Kashf data (owner)
- Kashf team
- Owner price list for Alrass
- Local pages are published only after a quality gate: real local facts, text similarity of no more than 15% with any other English page, and a claims check.
- النسخة العربية