Bathroom waterproofing for schools in Al Flah, Riyadh

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

What is specific about Al Flah for bathroom waterproofing

The centre of Al Flah is at 24.7963, 46.7088, about 9.8 km from the centre of Riyadh, with an approximate radius of 1.9 km. The approximate area shown on the map is centred here. Main roads in or near Al Flah: Northern Ring Road, Airport Road, Northern Ring Road.

The centre of Al Flah sits about 645 m above sea level (SRTM open elevation data).

Consider a school owner in Al Flah, Riyadh, who manages a building where students and staff use washrooms every day. Water spreads quickly across tiled floors, seeps through grout lines, and can reach walls and ceilings below if the floor seal fails. For a school, a leak is more than a repair bill: it can close a washroom block, disrupt lessons and leave damp patches that encourage mould. The owner wants a fix that is durable, affordable and planned around the school calendar, so that work can be carried out during holidays or quiet periods rather than in the middle of term.

Al Flah sits at about 24.7963, 46.7088, roughly 9.8 km from the centre of Riyadh, within an approximate radius of 1.9 km. Its centre is about 645 m above sea level. For a school owner, this means the area is a short drive from the city centre, so specialist crews and materials are reachable without long delays, which helps when a repair must be finished within a set window. The elevation is a useful reminder that site drainage and the way water runs away from the building should be checked before any new membrane is laid, because a sealed floor will only last if water is directed away from the building.

A practical sequence starts with a site survey of every washroom, noting cracks, failed grout and any signs of water coming through from neighbouring rooms. Next, prepare the surface by removing loose tiles and cleaning the base, then treat any cracks, with crack injection priced per metre in the range of SAR 40–125 per m. Apply the main waterproofing layer for the floor, where bathroom waterproofing costs between SAR 15–40 per m², or choose epoxy coating at SAR 35–95 per m² for a harder surface. Finish by reinstating tiles, testing for leaks with the area flooded for a set period, and recording the results so the school has a clear maintenance history.

For schools, the larger jobs are planned for weekends and holidays.

When do you need bathroom waterproofing?

The following signs are worth checking before they grow:

• Worn grout
• Damp around the shower
• A stain under the bathroom on the floor below

The most common causes

• The area around the floor drain.
• A damaged floor layer — we check this before anything else.
• A common cause: corners without waterproofing tape.

Tools and methods, and when we use them

How the work is done, step by step

1. Finding the source: A supply-pipe leak is ruled out first.
2. Preparation: The floor is opened and cleaned where needed.
3. Corners and details: Tape and detailing at corners, drains and pipe entries.
4. Flood test: The floor is tested before tiling.

Al Flah in facts and sources

Short answers for Al Flah

What we advise against

• Waterproofing the floor while the supply pipe still leaks

What you get after the work

The written output: the flood-test result and photos of each stage. The report is numbered and can be checked with its verification code.