Alicante province
Terrace Waterproofing in Alicante — Stop Leaks and Damp for Good
Terrace waterproofing in Alicante is the most requested repair on the Costa Blanca: leaks, water ingress and damp reaching the flat below. We seal terraces, flat roofs and balconies with liquid or sheet membranes, improve drainage and re-lay tiling, all with a 2-year guarantee.
Free quote
Same-day response. No obligation.
- Area
- Alicante & province
- Quote
- On request, no obligation
- Guarantee
- 2 years
- Timescale
- Balcony or small terrace waterproofing: 2–4 days.
On coastal villas and apartments, the terrace or flat roof is usually where water gets in first. Sun, salt and temperature swings break down old bitumen felt, and damp patches, flaking paint and drips appear in the property below. We find where the water is actually coming in before touching anything.
We use two systems depending on the job: liquid polyurethane membrane, ideal for walk-on terraces with complex shapes and several drains, and sheet membrane for larger flat roofs. In both cases we reinforce the upstands, gullies and parapets, which is where waterproofing almost always fails.
When the terrace is tiled, we assess whether to waterproof over the existing floor or lift and renew the tiles. We explain both routes with their timescales and guarantee so you can decide with full information, even from abroad via photos and a video call.
What's included
Leak-source diagnosis
We inspect the terrace, drains and junctions to pinpoint where the water is really entering.
Liquid polyurethane membrane
A seamless, continuous coating for walk-on terraces with awkward shapes.
Sheet membrane
Installation of waterproof sheeting for larger flat roofs and rooftops.
Gully and parapet reinforcement
Sealing the critical points where waterproofing typically breaks down.
Drainage and fall correction
We correct falls and enlarge outlets so water drains away instead of pooling.
Tile reinstatement
We relay or renew anti-slip tiling so the terrace is ready to use again.
How we work
- 1
Site visit
We locate the leak and check the drains with no obligation.
- 2
Fixed-price quote
We set out the system, items and timescale in writing.
- 3
Works
We prepare the substrate, apply the membrane and water-test it.
- 4
Handover with guarantee
A flood test and a written 2-year guarantee.
Timescales
- Balcony or small terrace waterproofing: 2–4 days.
- Walk-on terrace with liquid membrane: 4–7 days.
- Flat roof with sheet membrane and re-tiling: 1–2 weeks.
Bespoke quote
Every project is unique: the price fits your job.
We do not use one-size-fits-all price lists. After a free, no-obligation site visit we prepare a detailed personalised quote, with a fixed price agreed before we start.
Before & after
Terrace leaking to the flat below
Torrevieja
Liquid membrane over a 35 m² terrace after tracing the leak to the gully. Drips gone for good.
Apartment-block flat roof
Alicante centre
Renewed sheet membrane and outlets on a rooftop, with a new raised paving finish.
Customer reviews
“They found the leak others could not. Two winters on and still bone dry.”
“Tidy work and a flood test in front of me. Genuinely professional.”
Sample reviews — replace with real verified testimonials before going live.
Frequently asked questions
How much does terrace waterproofing cost in Alicante?
The price depends on the square metres, the system (liquid or sheet membrane), the condition of the substrate and whether the existing tiles must be lifted. Every terrace is different, so we fix the price after the site visit. Request a free, no-obligation quote.
Do you have to lift the terrace floor?
Not always. If the tiles are sound and well levelled, we can often waterproof over the top with a liquid membrane. If the floor is loose or the fall is wrong, lifting it is the right call. We assess this on the visit.
How do you find where the water gets in?
We inspect the terrace, gullies, parapets and junctions, which are the points that fail most often. Damp rarely shows directly under the leak, so we trace the true source first and only then repair it properly.
What guarantee do you give?
Every waterproofing job includes a written 2-year guarantee on the workmanship. Before handover we carry out a flood test with water to confirm the terrace is fully sealed and no water is getting through.
Can you manage the job if I live overseas?
Yes. We work with many non-resident owners. We survey the terrace, send a detailed quote by email and share photo and video reports at each stage, so you can approve the work and see progress without being on site.
Areas we cover
Related services
Ready for your free, no-obligation quote?
Free site visit and a personalised quote. Same-day response.