Repair Services
Waterproofing Services
| Item | Price |
|---|---|
| Rooftop waterproofing (acrylic/PU) | THB 200–400 / sq.m. |
| Bathroom waterproofing before tiling | THB 150–300 / sq.m. |
| Wall waterproofing (damp walls) | THB 250–450 / sq.m. |
Market reference range · actual price per quotation · Market estimates, not yet derived from completed jobs · last reviewed July 2026
The real price comes from the technician’s quotation, priced from the photos and details you send on LINE rather than from a visit first. You confirm that price, and only then is the visit arranged.
A visit costs 500 baht when the technician comes from your own province and 2,000 baht from another one. It is counted inside the quote’s single total rather than billed separately, and it is not refunded if you look and decide against the repair.
- Condition of the existing surface — whether cracks need grinding or filling first
- Waterproofing material chosen — acrylic, PU or cementitious
- Whether the leak comes from a single point or several spread-out ones
The most common waterproofing job is a rooftop or bathroom that's letting water through. Rooftop waterproofing runs 200–400 baht per square metre as a market reference price; bathroom waterproofing before tiling runs 150–300 baht per square metre.
- Rooftop waterproofing
- THB 200–400 / sq.m.
- Bathroom waterproofing (before tiling)
- THB 150–300 / sq.m.
- Warranty
- 7 days
- Rework guarantee
- Yes
Frequently asked questions
Why does a property sometimes leak again even after waterproofing was done?
Usually because the actual cause wasn't fixed — a structural crack still moving, or a corner and edge that wasn't coated properly in the first place, since those are where leaks typically start. The technician traces the real source before doing any work each time.
For a newly renovated bathroom, does waterproofing need to happen before the tile goes down?
Strongly recommended, yes. Waterproofing a bathroom or any wet area is far easier before tile is laid — if a leak shows up later, the tile has to come up before the waterproofing can be redone.
My downstairs neighbour is complaining about water coming from my unit — how does that get sorted out?
This kind of cross-unit dispute needs the actual source confirmed first. A technician can help establish whether the water is really coming from your unit, which gives the juristic office something concrete to work from when coordinating who handles it.
Is the price shown what I'll actually pay?
It's a market reference price. The actual cost depends on surface condition and material chosen, and is confirmed again with the technician before work starts.
Ready to get it fixed?
Message us on LINE. The price comes back before anyone turns up.