Floor & balcony waterproofing in Alzulfi: before buying or handover

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

Before we start: what we know about Alzulfi

Main roads in or near Alzulfi: King Fahd Road, Sheikh Ibn Baz Square, King Salman Road. The centre of Alzulfi sits about 615 m above sea level (SRTM open elevation data).

Team note on Alzulfi: 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 most common problem with floors and balconies in Alzulfi is water that is trapped against the surface and then works its way into the structure. On balconies and terraces this usually shows up as staining on the ceiling below, peeling tiles, and hairline cracks where the slab meets the railing or the wall. Floors in ground-level and bathroom areas tend to fail in a similar way, with moisture rising through the slab and loosening finishes over time. Before anything else, the aim is to identify where the water is actually entering, because the fix depends on whether the problem is a surface film that has worn through or a crack that needs to be filled.

Alzulfi sits about 615 m above sea level, which matters for how a balcony or floor is approached. At that elevation the site is not a low, flood-prone basin, so the main concern is usually rainwater running off the surface and pooling at joints rather than water standing against the base of the building. That shapes the choice of system. Liquid roof waterproofing at SAR 8–25 per m² and bitumen membrane at SAR 15–35 per m² are common options for exposed open areas, while epoxy coating at SAR 35–90 per m² suits surfaces that need a harder, more wear-resistant finish. Where cracks are the source, crack injection at SAR 40–120 per metre addresses the defect directly instead of coating over it. Read the elevation as a reason to focus on drainage and joints, not on pressure from below.

Before the visit, ask the provider to confirm exactly which area they will treat and whether they will inspect for the entry point rather than only the visible damage. Ask what the quote covers per square metre or per metre of crack, and whether preparation, removal of loose material and drainage checks are included. Request a clear statement of the system being proposed and why it suits an open balcony or floor at this location. Ask how the surface will be protected while the work cures and when it can be used again. A written scope that names the area, the method and the unit price makes it much easier to compare offers and to know what you are paying for.

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

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

Causes we see in the field

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

Tools and methods, and when we use them

The steps in order

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.

Facts and costs — Alzulfi

Questions from Alzulfi

Mistakes that cost more

• 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.