Floor & balcony waterproofing in Qatif: before buying or handover

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

What is specific about Qatif for floor & balcony waterproofing

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).

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 sits about 5 m above sea level, and it lies roughly 2.5 km from the coast. That combination means the town is low-lying and close enough to the sea that salt-laden air and a high water table can both matter. For floors and balconies, the practical effect is that moisture rising through slabs and salty air working on exposed surfaces can speed up deterioration, so the waterproofing system chosen should suit both damp ground conditions and a coastal climate. Before you buy or accept a handover, ask what protection is already in place, and whether any balcony or floor shows signs of moisture coming up from below.

Pricing shows how the scope of work changes with the surface. Basement waterproofing runs SAR 50–150 per m², bathroom waterproofing SAR 15–40 per m², and epoxy coating SAR 35–90 per m². Spray foam is SAR 20–45 per m², crack injection SAR 40–120 per metre, and liquid roof waterproofing SAR 8–25 per m². Bitumen membrane costs SAR 15–35 per m², tank internal coating SAR 25–60 per m², and XPS boards SAR 12–30 per m². Because a balcony or floor may need several of these approaches together, such as a membrane under tiles plus crack injection at joints, ask for each item to be quoted separately so you can see what is included and what is not.

Owners in Qatif commonly avoid a few costly errors. They do not accept a handover without checking the bathroom and balcony edges, where water most often escapes. They do not rely on a single quote without confirming the area measured and the material named. They do not leave hairline cracks unsealed, since crack injection is far cheaper than repairing water damage later. And they do not skip a basic check of the surface before any coating is applied, because a coating laid over damp or dusty concrete will not bond properly.

Before buying or taking over a property, an inspection gives you findings in writing before you sign.

Signs that call for floor & balcony waterproofing

These are the signs most often linked to floor & balcony waterproofing:

• A wrong fall towards the door threshold
• Water passing from the balcony to the floor below
• Damp under the light well

Causes we see in the field

• Incorrect falls.
• A threshold without waterproofing.
• A blocked drain — we check this before anything else.

Tools and methods, and when we use them

How the work is done, step by step

1. Checking the falls: Where water collects and where it should go.
2. Details: Thresholds, drains and upstands.
3. Waterproofing: The layer is applied and protected.
4. Flood test: Tested before the finish goes on.

Qatif in facts and sources

Questions from Qatif

What we advise against

• Tiling a balcony without waterproofing

The written outputs

You receive: the flood result and photos of the details, in a technical report with a verification code.