Floor & balcony waterproofing for villas in Yanbu

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

Floor & balcony waterproofing in Yanbu: the local context

Yanbu is about 1.2 km from the sea coast (OpenStreetMap). The centre of Yanbu sits about 6 m above sea level (SRTM open elevation data).

Main roads in or near Yanbu: King Abdulaziz Road, Umluj Road, Al Hanan Street. Team note on Yanbu: 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..

Floor and balcony waterproofing for villas in Yanbu most often fails at the edges and joints rather than in the open field of the slab. Water finds the seam where a balcony meets the wall, where a floor tile grout line cracks, or where a drain sits slightly below the surrounding surface. By the time a stain appears on the ceiling below, the moisture has usually been travelling for some time. Early signs include hollow-sounding tiles, paint that bubbles near a balcony door, and a faint musty smell after rain. Crack injection, priced at SAR 40–120 per metre, is often the first repair a homeowner needs, but it only solves the problem if the surrounding surface is also prepared and sealed correctly.

Local conditions shape how the work should be done. The centre of Yanbu sits about 6 m above sea level, and the city is about 1.2 km from the sea coast. That combination means salt-laden air reaches many villas, so coatings that handle salt exposure and temperature swings are more suitable than a basic surface sealant. For balconies and open terraces, liquid roof waterproofing at SAR 8–25 per m² or a bitumen membrane at SAR 15–35 per m² are common options, while epoxy coating at SAR 35–90 per m² suits wet floor areas that need a hard, easy-to-clean finish. Spray foam at SAR 20–45 per m² and XPS boards at SAR 12–30 per m² are also used where insulation and moisture control are needed together.

Before the visit, ask the provider to confirm which system they plan to use and why it suits your specific balcony or floor, not just the general property type. Ask them to look at the drainage points, the wall junctions and any existing cracks, and to explain how they will treat each one. Request a clear written scope showing the area in square metres and any linear metres of crack injection, so you can compare quotes line by line against the price ranges above. Finally, ask how long the surface must stay dry before use and what maintenance the coating will need in Yanbu's coastal air.

Villas often have several lines and tanks; we test them one at a time so the cause is clear.

Signs worth paying attention to

The following signs are worth checking before they grow:

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

The most common causes

• Incorrect falls.
• A common cause: a threshold without waterproofing.
• A blocked drain.

Tools we use in Yanbu

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.

Quick comparison: facts and costs in Yanbu

Common questions about floor & balcony waterproofing in Yanbu

Mistakes that cost more

• Tiling a balcony without waterproofing

What you receive

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