Floor & balcony waterproofing in Dhahran: for companies (annual contract)

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

Before we start: what we know about Dhahran

Team note on Dhahran: 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 Dhahran sits about 16 m above sea level (SRTM open elevation data).

Dhahran is about 5.9 km from the sea coast (OpenStreetMap).

The first thing checked for floor and balcony waterproofing in Dhahran is the site's position relative to the coast and ground level. The centre of Dhahran sits about 16 m above sea level (SRTM open elevation data), and the city is about 5.9 km from the sea coast (OpenStreetMap). These facts shape how drainage is judged on a company site, because water on a balcony or in a plant room needs a clear fall to outlets, and the existing slope and gully positions should be noted before any membrane is chosen.

What is left to the site visit is the detail that no map can show. The technician needs to walk the floor or balcony, look at the existing surface, and mark cracks, ponding areas, upstands, drain outlets and any past repairs. Tile or screed condition, the age of the existing membrane, and whether the work sits over occupied space all change the method and the access plan. Any crack that needs sealing should be measured on the spot, since crack injection is priced per metre at SAR 40–120 per m, while surface systems are priced per square metre. The choice between epoxy coating at SAR 35–90 per m², spray foam at SAR 20–45 per m², liquid roof waterproofing at SAR 8–25 per m², or a bitumen membrane at SAR 15–35 per m² depends on what the visit reveals about traffic, exposure and the surface underneath.

To help the technician, the client should have the floor plan, the area of each floor or balcony in square metres, the location of drains and outlets, and a note of any tank or basement adjacent to the work, since tank internal coating runs at SAR 25–60 per m² and basement waterproofing at SAR 50–150 per m². Where insulation is part of the scope, XPS boards at SAR 12–30 per m² may be considered. Clear information on working hours, access to the building and the areas that must stay in use allows the site team to plan the sequence of work and estimate the time each stage will take.

For companies, an annual contract sets the scope, the visit schedule and the reports in writing.

Signs that call for floor & balcony waterproofing

The following signs are worth checking before they grow:

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

The most common causes

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

Tools we use in Dhahran

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.

Dhahran in facts and sources

Questions from Dhahran

What we advise against

• Tiling a balcony without waterproofing

What you receive

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