Waterproofing Services in Dubai & Sharjah
Roofs, terraces, wet areas, basements, tanks and pools - sealed with the right system for the exposure, and warranted.
In this climate /
Waterproofing is the one trade where cutting cost never pays It is hidden work. Once tiles, screed or paving go over a membrane, nobody can see whether it was done well, done cheaply, or barely done at all. The result is identical on handover day.
The difference appears eighteen months later, and by then the cost of correction is not the cost of the membrane. It is the cost of removing everything above it - tiling, screed, paving, sometimes joinery and ceilings below - plus repairing the damage the water caused on its way through. A waterproofing job that saved a few thousand dirhams routinely costs ten times that to put right.
Three things cause most failures we are called to investigate.
Detailing, not the flat areas. Membranes rarely fail in the middle of a roof. They fail at upstands, drain outlets, pipe penetrations, door thresholds and junctions between materials. That is where water finds a path, and it is where careful work matters.
Movement. The daily temperature swing on an exposed UAE roof is substantial, and the structure expands and contracts accordingly. A rigid coating without adequate flexibility cracks. Systems here need genuine elasticity, and the product data should demonstrate it.
Falls and drainage. A membrane is a barrier, not a substitute for drainage. Standing water on a terrace will eventually find any weakness, and blocked or badly positioned outlets guarantee standing water. We check falls and outlets as part of every survey.
The other reality worth stating plainly: rainfall here is infrequent but intense. Systems that cope with light, regular rain elsewhere face a very different test when a year's rain arrives across a few days - which, increasingly, is what happens.
Scope /
What we do
Roofs and terraces
- Roof waterproofing - liquid-applied and membrane systems
- Terrace and balcony waterproofing
- Exposed and protected systems
- Roof garden and planter waterproofing
- Parapet and upstand detailing
- Expansion joint treatment
- Roof drainage and outlet works
- Heat-reflective roof coatings
- Roof leak investigation and repair
Wet areas
- Bathroom waterproofing beneath tiling
- Kitchen and utility wet-area membranes
- Shower tray and wet-room systems
- Balcony threshold detailing
- Laundry and plant room floors
Below ground
- Basement tanking
- Retaining wall waterproofing
- Lift pit waterproofing
- Foundation protection
- Negative-side waterproofing for existing basements
- Drainage and cavity systems
Water-retaining structures
- Water tank internal lining
- GRP lining systems
- Swimming pool waterproofing
- Water feature and fountain sealing
- Tank repair and refurbishment
Investigation and remedial
- Leak investigation and source tracing
- Water testing and flood testing
- Thermal imaging survey
- Crack injection
- Joint and penetration sealing
- Membrane repair and overlay
- Concrete repair before waterproofing
Symptoms /
What we get called for most
A leak into the space below a terrace or roof
The most common call. The entry point is usually not above the visible damage - water travels along the slab and structure. We trace it before recommending anything. A bathroom leaking into the room below or next door. Almost always an absent or failed membrane beneath the tiling. Tiles and grout are not waterproof; the membrane below them is. This means removing the tiling to fix properly - there is no shortcut, and anyone offering a surface-applied miracle solution is selling you time, not a repair.
Roof coatings that have cracked or blistered
Insufficient flexibility for the thermal movement, or applied over a damp or poorly prepared substrate. Both mean redoing it properly rather than coating over it.
Water at the base of external walls
Paving falling towards the building, blocked drainage, or failed damp- proofing. Fixing the falls is usually as important as the waterproofing.
Damp in a basement or lift pit
Below-ground water ingress, which needs a different approach from above- ground work - often negative-side systems or cavity drainage where external excavation is impractical. Water tanks losing water or contaminating supply. Failed internal lining. Cleaning, repair and re-lining with a potable-safe system.
Pools losing water
Structural cracking, failed waterproofing, or plumbing leaks. Investigation first - the cause determines the repair.
Before a renovation or repaving
The right moment to waterproof properly, while everything is already open. Far cheaper than after.
How we work /
- 01
Investigate
Thermal imaging, water testing and inspection to find where water actually enters. We do not seal on assumption.
- 02
Assess the substrate
Cracks, spalling, damp content and falls. Waterproofing over an unsound or damp substrate fails.
- 03
Specify the system
Matched to exposure, movement, traffic and what goes on top. We name the product and explain why.
- 04
Prepare
Cleaning, crack repair, priming, forming fillets at upstands. The preparation is most of the work.
- 05
Apply
Correct thickness, correct number of coats, correct overlaps, and meticulous detailing at every penetration, upstand and junction.
- 06
Test
Flood test where the area allows, before anything is laid over it. This is the step most contractors skip and the only way to know it works.
- 07
Document and warrant
Photographs of the completed membrane before covering, plus a written warranty.
Indicative pricing /
What this work typically costs
- Roof waterproofing - liquid applied
- On survey
- Roof waterproofing - membrane system
- On survey
- Terrace and balcony waterproofing
- On survey
- Bathroom waterproofing (per bathroom)
- On survey
- Basement tanking
- On survey
- Water tank lining
- On survey
- Swimming pool waterproofing
- On survey
- Leak investigation survey
- On survey
- Crack injection (per linear m)
- On survey
Work From (per sq m) Free survey. Warranty period stated in every quotation.
Why Spanex /
Why Spanex for waterproofing
We investigate before we seal
Thermal imaging and water testing to find the actual entry point. Sealing the wrong area is common and achieves nothing.
Detailing is where we spend the time
Upstands, outlets, penetrations and junctions - where membranes actually fail.
We flood test before covering
The only way to confirm a membrane works is to test it before it is buried. Most contractors do not, because a failed test means redoing the work.
Photographic record
The completed membrane is photographed before anything covers it, so you have evidence of what was installed.
Written warranty
Stated period, in writing, in the quotation.
Everything above it is ours too
Screeding, tiling, paving, painting. One contractor from the membrane to the finish, and no argument about whose work failed.
Sectors we serve /
- Premium villas
- Residential buildings
- Retail and malls
- Schools
- Healthcare
- Industrial and production
- Sports venues
- Commercial offices
Questions /
Frequently asked
How long does waterproofing last?
Poor preparation and thin application are what shorten it, not the passage of time.
Can you waterproof a bathroom without removing the tiles?
Not properly. The membrane belongs beneath the tiling. Surface treatments applied over existing tiles are temporary at best. Anyone promising a permanent fix without removing tiles is offering you a delay, not a repair.
How do I find where a roof leak is coming from?
Rarely by looking at the ceiling stain - water travels before it emerges. We use thermal imaging and controlled water testing to isolate the source, then repair the actual entry point.
Why did my roof coating crack?
Usually insufficient flexibility for the thermal movement an exposed UAE roof experiences, or application over a damp or poorly prepared substrate. Both require redoing rather than recoating.
Do you flood test?
Yes, wherever the area allows it, before anything is laid over the membrane. It is the only reliable verification, and it is why our warranty means something.
Can you waterproof a basement from the inside?
Yes. Where external excavation is impractical, negative-side systems and cavity drainage are effective. The approach depends on water pressure and construction type, which we assess at survey.
Is waterproofing needed under interlock and paving?
Where the paving sits over occupied space - a terrace above a room, a podium deck - absolutely. On ground- bearing paving, falls and drainage matter more than a membrane.
What warranty do you give?
Because we also carry out the work above the membrane, there is no dispute about whose work caused a failure.
Where we work /
All Dubai and Sharjah communities. APPENDIX - IMPLEMENTATION NOTES Internal linking map Every trade page links to related trades. Implement these as CMS references (Service.relatedServices) rather than hard-coded links, so they update automatically. Page Links to Electrical ELV, HVAC, Handyman, AMC HVAC Electrical, Deep Cleaning, Ceiling, AMC Plumbing Waterproofing, Ceiling, Tiling, Deep Cleaning Renovation Fit-Out, Interior Decoration, Gypsum, Painting, Tiling Tiling Waterproofing, Renovation, Interlock, Deep Cleaning Ceiling Gypsum, Plumbing, HVAC, Painting Fit-Out Renovation, Gypsum, ELV, Carpentry, Interior Decoration Interior Decoration Carpentry, Painting, Gypsum, Renovation Interlock Tiling, Waterproofing, Deep Cleaning, Renovation Gypsum Ceiling, Painting, Fit-Out, Carpentry Carpentry Interior Decoration, Fit-Out, Renovation, Handyman ELV Electrical, Fit-Out, AMC, Handyman Handyman Electrical, Plumbing, Carpentry, Painting Deep Cleaning HVAC, Plumbing, Painting, AMC Painting Gypsum, Waterproofing, Ceiling, Renovation Waterproofing Plumbing, Tiling, Ceiling, Painting Publication order Publish in this sequence, matched to search demand and commercial value rather than alphabetically: 94. HVAC & AC Maintenance - highest search volume by a wide margin 95. Plumbing Works - high volume, high urgency 96. Electrical Services - high volume 97. Handyman Services - high volume, low friction entry point 98. Renovation - highest deal value 99. Painting Works 100. Fit-Out - high B2B value 101. Deep Cleaning 102. Tile Fixing & Flooring 103. Waterproofing 104. Gypsum Works 105. Ceiling Works 106. Carpentry & Joinery 107. ELV Systems 108. Interior Decoration 109. The technical detail in these pages is what differentiates them from every competitor page in this market. Have the person who actually does the work read it - if anything is wrong for how Spanex operates, correct it. Accuracy is the entire advantage.
Next step /
Get a fixed price for your waterproofing
Free survey anywhere in Dubai and Sharjah. Written scope and fixed quotation before work starts.