Waterproofing services in Dubai – roofs, bathrooms, balconies and basements

Roof waterproofing Dubai work splits three ways: villa roof waterproofing on an accessible slab, flat roof waterproofing on an apartment block or a warehouse, and roof leak repair where a stain has already come through a ceiling below. The first question is always the falls. A membrane laid over a screed that ponds water holds that water against itself until it finds the weakest lap.

For exposed roofs we generally specify a bituminous membrane: a torch-applied membrane in APP membrane or SBS membrane grade, chosen for how much the slab moves and how hot the surface gets. APP copes better with UV and heat; SBS stays flexible when the structure shifts. A sheet gives you a factory-controlled thickness no site-applied film can match, so the attention moves to the laps, the upstands and the outlets.

Where a roof is being insulated at the same time, roof insulation boards go under the membrane. Where a roof cannot be stripped, a heat-reflective roof coating over a sound system drops the surface temperature and buys years. Re-waterproofing old roofs costs less before the rains than after them, which is when we would rather be on the scaffold.

Bathroom waterproofing is the job we do most often and the one most often skipped. Shower waterproofing means the floor, the upstands and the full height of every wet wall, not a strip around the tray. Waterproofing before tiling is the only moment at which it can be done properly; once the tiles are down you are managing a problem instead of preventing one.

Kitchen waterproofing and laundry room waterproofing matter for the same reason: a slow seep under a washing machine reaches the neighbour below long before it reaches you. In an apartment, our waterproofing services in Dubai treat the kitchen floor, the sink run and every plumbing penetration as one continuous surface rather than three separate details.

Then we flood test. The area is plugged and filled for 24 to 48 hours, photographed full and photographed drained, and the record reaches you before the tiler starts. Two coats, applied at right angles, at the coverage rate printed on the tin and written on our sheet.

Balcony waterproofing and terrace waterproofing fail at the edges, not in the middle. Podium waterproofing and a rooftop terrace add a second problem: a finish laid over the top – tiles, decking, planting – that hides the membrane and stops anyone seeing the failure until it appears on a ceiling indoors.

On these surfaces our waterproofing services in Dubai usually use liquid waterproofing rather than sheet: an acrylic coating on a sheltered area, a polyurethane (PU) coating or an elastomeric coating where sun and movement are severe. A liquid system turns corners, drains and pipe collars without a single joint, which is exactly where sheet material gets awkward.

Parapet wall waterproofing belongs to the same job and is taken up behind the coping rather than stopped at floor level. Expansion joint sealing is detailed with a flexible band bonded each side, so the joint can move the few millimetres it needs to without tearing the membrane along its edge.

Basement waterproofing and foundation waterproofing deal with water pushing in rather than falling on. In coastal and reclaimed parts of Dubai the water table does that pushing all year round. Retaining wall waterproofing applied from the outside – the positive side – holds water off the structure; damp proofing applied on the inside face is a second line of defence, not a substitute for the first.

Where a wall is already built and already wet, our waterproofing services in Dubai use crack injection. PU injection suits an active leak, because the resin foams on contact with water and stops the flow before anything else can be done. Epoxy resin is used where the crack is dry and the repair is structural as much as it is watertight.

Cementitious waterproofing suits substrates that do not move – lift pits, retaining walls, tanks – and cracks if they do. Crystalline waterproofing earns its place where treatment has to work from the negative side, growing crystals into the pores of the concrete instead of sitting on the face of it. An epoxy coating goes on where chemicals or traffic are part of the picture.

Swimming pool waterproofing is a water-retaining job: the shell stays wet permanently and flexes slightly with temperature, so a flexible polymer-modified cementitious system goes on before the mosaic or the tile. Water tank waterproofing uses a potable-approved coating instead, so that nothing leaches into stored drinking water.

Planter box waterproofing is the one everybody forgets. A planter is a tank that is also full of soil, fertiliser and live roots, and it usually sits on a slab directly above a room. Our waterproofing services in Dubai tank planters internally and add a root barrier and a drainage layer before any soil goes back in.

Water seepage repair starts with finding the source, not with opening the wall. Dampness in walls and rising damp look identical from inside whether the water is coming from a planter, a chilled-water pipe or a failed balcony above, and wall dampness treatment applied to the wrong cause simply moves the stain a metre to the left.

Ceiling leak repair is the most common call we get. A leak from the upstairs bathroom, AC leak damage from a blocked condensate drain and a roof leak all show up as the same brown ring. Our waterproofing services in Dubai start with water leak detection – isolating supply, drainage and condensate in turn, and tracing concealed runs with a moisture meter and a thermal imaging camera.

Once the source is proved we price the repair honestly. Sometimes it is sealant works and silicone sealing at a shower tray, sometimes window and facade leak sealing, sometimes stripping and re-tanking a whole wet area. Where damp has been sitting for months, mould treatment and anti-fungal treatment go on before anything is closed back up.

No single product does everything, so the waterproofing services in Dubai we quote name the system rather than just the trade. Bituminous sheet for exposed roofs. Liquid PU and elastomeric for balconies and complex detailing. Flexible cementitious for wet areas and pool shells. Crystalline for negative-side basements. Epoxy where chemicals or heavy traffic are involved.

We specify Dubai Municipality-approved materials and keep the manufacturer data sheet with the job file, because that is what building management approval usually asks to see before a contractor is allowed to start work in an occupied tower.

The number that decides whether a membrane works is dry film thickness, and it is the number almost nobody checks. A system specified at 1.5 mm dry but applied at 0.6 mm because the coverage was stretched is not waterproof, whatever it says on the tin. We apply by coverage rate per square metre and we record it.

Waterproofing for new construction is the easy case: the substrate is bare and the programme has room in it. Waterproofing for renovation is harder, because the finishes are in, the neighbours are in, and the work has to be staged so that a family bathroom is not standing open for a fortnight.

Villa work takes us to Arabian Ranches, the Springs, the Meadows, Dubai Hills, Damac Hills, Mirdif and Jumeirah. Apartment work is mostly JVT, JVC and Al Barsha. Commercial waterproofing services in Dubai – warehouse roofs, plant rooms and tank farms – run out to Al Quoz and Jebel Ali, usually out of hours so that trading is not interrupted.

Before and after waterproofing is easy to show on a roof and impossible to show in a bathroom, which is exactly why the flood test photographs matter. Leak repair before the rains is a far better piece of timing than leak repair during them, so October beats January every year.

Waterproofing cost per sq ft Dubai is how most people ask, so: our rates work out at roughly AED 5 to 17 per square foot depending on the system and the surface. The roof waterproofing cost and bathroom waterproofing cost in the table below are per square metre of finished area and include preparation, detailing and the flood test.

The ranges assume reasonable access and a sound substrate. Screed to correct the falls, removal of a failed membrane and making good the tiling are priced separately and shown as their own lines, because burying them inside a headline rate is how a cheap quotation turns into an argument halfway through the job.