Roof waterproofing in Qatif: cost & published offers

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

Before we start: what we know about Qatif

Team note on Qatif: 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.. Qatif is about 2.5 km from the sea coast (OpenStreetMap).

The centre of Qatif sits about 5 m above sea level (SRTM open elevation data).

Qatif sits about 5 m above sea level near its centre, and the town lies roughly 2.5 km from the coast, so a roof here is exposed to salt-laden air and to the heat that bakes the surface for much of the year. For that reason, the first things we check on a Qatif roof are the surface condition, the drainage slope and any signs of salt crusting or blistering in the membrane. Salt and sun break down coatings faster than in many inland areas, so a roof that looks sound from below can already be losing its seal. Our technicians also note whether the roof has an old bitumen layer, a liquid coating or a spray foam finish, because each responds differently to repair.

Several points can only be settled at the site visit. The true extent of any ponding, the state of the parapets and upstands, the condition of drain outlets and the moisture trapped beneath the existing layer all need to be seen and probed in person. The same applies to cracks in the concrete, which must be traced to their full length before any crack injection is priced, because the cost is charged per metre. A visit also confirms whether the roof will need XPS insulation boards before the waterproofing goes down, and whether the chosen system suits the foot traffic or rooftop equipment the owner expects. Published rates give a starting range only; the final scope depends on what the technician finds.

To help the technician, please tell us the approximate roof area in square metres, the type of finish you believe is already there and when it was last treated. Note any leaks inside the building, including the room and the position of the stain, and mention whether the roof is used for water tanks, which may need a separate internal coating. Photos taken after rain are especially useful, because they show where water actually stands. Clear access to the roof and a dry day for the visit will let the technician check everything properly and give you a sound quote.

Prices shown on this page come from our own published price list for the city; the final price is set after inspection.

Signs that call for roof waterproofing

These are the signs most often linked to roof waterproofing:

• 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.
• A common cause: 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.

Quick comparison: facts and costs in Qatif

Short answers for Qatif

Mistakes that cost more

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

What you get after the work

You receive: a quality record with photos and the flood-test result, in a technical report with a verification code.