Floor & balcony waterproofing for hotels & serviced apartments in Alrass

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

Before we start: what we know about Alrass

The centre of Alrass sits about 695 m above sea level (SRTM open elevation data). Main roads in or near Alrass: King Abdulaziz Road, King Fahd Road, King Salman Road.

Team note on Alrass: 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 in hotels and serviced apartments most often fails at the junction where the floor meets the wall, around drains, and at the threshold of balcony doors, because guests use these areas daily and water finds the smallest gap. In Alrass, the centre sits about 695 m above sea level, which means the local approach starts with the elevation itself: the town's position on a raised plateau shapes how rainwater runs off balconies and terraces, so the drainage falls and outlets need to be checked before any coating is chosen. Crack injection, priced at SAR 40–120 per m, is often the first step where hairline cracks run along the slab edge, and liquid roof waterproofing at SAR 8–25 per m² suits large open terraces where a seamless skin is practical.

For bathrooms and wet zones inside guest rooms, bathroom waterproofing at SAR 15–40 per m² and epoxy coating at SAR 35–90 per m² are commonly compared, with spray foam at SAR 20–45 per m² used where the surface is uneven. Balconies that sit over occupied floors or over car parks may need a bitumen membrane at SAR 15–35 per m², and insulated decks can use XPS boards at SAR 12–30 per m² to protect the membrane from heat and foot traffic. Where a basement or lower level is involved, basement waterproofing at SAR 50–150 per m² is a separate scope and should be quoted apart from the guest-floor work.

Before the visit, ask the provider which system they propose for each surface and why, and request that the scope show the drainage falls, outlet positions and crack locations you have pointed out. Ask how long guests or occupied rooms will be affected, how the work will be phased so that rooms can be kept in use, and whether a site walk-through will be carried out before any price is agreed. Confirm in writing which areas are included in the quoted rates per m² and per metre, and whether tank or basement work is covered or excluded. A clear, itemised scope will make it easier to compare offers and to hold the work to the agreed standard.

For hotels and serviced apartments, rooms are handled in batches to keep units available.

Signs that call for floor & balcony waterproofing

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

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

Where the problem usually comes from

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

Tools we use in Alrass

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.

Facts and costs — Alrass

Questions from Alrass

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.