The Leak Is Under Your Tiles
Terrace tiles are the finish — the screed below them is the waterproofing patient, and it is almost never inspected.
A Dubai terrace is a sandwich: concrete slab, screed poured over it, tiles bonded on top. The screed cracks with daily thermal movement; grout lines admit rain into the screed layer; trapped water then travels horizontally inside the sandwich and emerges at the parapet base, door thresholds or indoor ceilings. Homeowners usually only see the grout and call for "re-grouting" — the leak returns because the screed beneath was never treated and the parapet junction was never detailed.
Our terrace scope therefore opens the sandwich in failed zones: tiles carefully removed, screed repaired or re-laid with corrected falls, EPDM turn-ups on all four parapet walls, membrane across the field at the right class for foot traffic, then tiles re-fixed. Case study on comparable residential scope: AGI Investments villa.
Terrace Work Sequence
- Screed & tile auditHollow tile sounding, screed probing, parapet junction photos — scope sized before pricing.
- Controlled demolitionFailed tiles lifted by section; debris removed daily; terrace protected where furniture remains.
- Screed repair to real fallsBird-baths filled, slopes corrected toward outlets; door thresholds raised where needed.
- EPDM perimeter firstAll four parapet junctions bonded before field membrane — the order many contractors skip.
- Field membrane + protectionPedestrian-grade system under tiles; planters treated with root-resistant variant.
- Tiles re-fixed + flood testSame tiles re-laid; 24 h flood test recorded into warranty file before final grouting.
Terrace FAQs
Grout lines are the weak link, not the tiles. Screed under the tiles moves with temperature and opens hairline joints; water enters through the thin grout, travels along the screed and exits at the weakest interior point. Resealing grout alone treats the symptom — the screed movement below continues.
No. Tiles come up (only in failed sections), screed gets repaired to correct falls, membrane goes on, and the same tiles are re-fixed with proper bonding. Where tiles are too damaged to re-use we source matching replacements and flag it in the quote.
Yes — the wall/roof junction is the classic terrace failure. Our system bonds cured EPDM from the field up the wall to a genuine height (not the 5 cm shortcuts you often find), so the movement joint is consistently covered even as both surfaces breathe differently.
Yes; planter walls are a frequent leak source because irrigation keeps their substrate permanently damp. Planter interiors get a root-resistant membrane variant and the junction to the terrace floor is treated as one continuous detail.
Membrane cure plus tile re-fixing: typically 2–4 working days for a villa terrace, light foot traffic after cure per adhesive guidance. Commercial terraces are scheduled zone-by-zone so access is only partially interrupted.
Both are possible. If the screed is being opened anyway, adding thermal insulation is cheap at that moment — see roof insulation services. Otherwise waterproofing-only keeps the quote minimal.
Treat The Screed, Not Just The Grout
Terrace waterproofing that survives December rain and July heat alike.
