Roof waterproofing for rest houses & farms in Afif

Prepared by the technical team · editorial review · last updated 13 November 2026 · Sources

Why roof waterproofing differs in Afif

Team note on Afif: 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.. Main roads in or near Afif: King Abdulaziz Road, King Faisal Road, Airport Road.

The centre of Afif sits about 1040 m above sea level (SRTM open elevation data).

The first thing a technician checks on a rest house or farm roof in Afif is the height of the site. The centre of Afif sits about 1040 m above sea level (SRTM open elevation data), which means roofs here face a different climate from the coastal cities, with cooler nights and stronger temperature swings between day and evening. Those swings open hairline cracks in older concrete and lift the edges of flashing, so the first walk around the roof focuses on joints, parapets, drain outlets and any spot where water has already left a stain. Checking these first tells us whether a liquid coating will hold or whether the surface needs to be cut back and repaired before any new layer goes on.

Several things can only be judged on the site visit. The pitch and fall of the roof, the condition of the existing membrane, whether old bitumen is still bonded or has begun to blister, and how much water ponds after rain all decide the method and the quantity. The same goes for crack injection, which is priced per metre, so the length and width of each crack must be measured in person. Liquid roof waterproofing is priced at SAR 8–25 per m², bitumen membrane at SAR 15–35 per m², and XPS boards at SAR 12–30 per m², and the right choice among these depends on what the roof can carry and how it drains. A water tank on the roof, if present, is assessed separately, since tank internal coating is quoted at SAR 25–60 per m².

Technicians will find it useful to know the roof's full history before arriving: when it was last treated, whether there have been leaks inside the rooms below, and whether the building has a basement or bathroom that shares a wall with the roof. Photos of the roof edges and drains taken after a rainfall are very helpful, as is a note on which areas are used for storage or livestock, since that affects access. Please also mention any plans to add a tank or change the roof surface, because these change the work. With this information ready, the visit can move straight to measuring and advising on the right system for the building.

Rest houses and farms often have long buried lines, tanks and irrigation that need separate tests.

Signs that call for roof waterproofing

If you notice one of these signs in Afif, it is a good moment to talk to the team:

• The old waterproofing is cracking
• Water pooling on the roof
• Stains on the top-floor ceiling after rain

Causes we see in the field

• Cracks in the roof slab — we check this before anything else.
• Wrong falls towards the drains — we check this before anything else.
• Damaged waterproofing around tank and AC bases.

Tools and methods, and when we use them

The steps in order

1. Survey: Falls, drains and the condition of the old layer are recorded.
2. Preparation: Cleaning and repairs before any new layer.
3. Primer: The base coat that the system needs.
4. Waterproofing layers and details: Corners, upstands and bases get their own detail.
5. Flood test: The roof is flooded and checked before it is covered.

Facts and costs — Afif

Common questions about roof waterproofing in Afif

What we advise against

• Ignoring the tank bases
• Covering the waterproofing before the flood test

What you receive

The written output: a quality record with photos and the flood-test result. The report is numbered and can be checked with its verification code.