Proseal Contracts has been a waterproofing company in Singapore since 1999. We find where the water is getting in, then repair it under a written warranty: roofs, toilets, balconies, external walls and ceilings.
✓ BCA-registered waterproofing contractor (CR13 L2) · ✓ ISO 9001, 14001, 45001 · ✓ Free on-site inspection, no obligation
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Registered and certified: BCA CR13 L2 · CR09 L4 · CR01 · ISO 9001 · ISO 14001 · ISO 45001 · bizSAFE Star
We are a BCA-registered waterproofing company working on HDB flats, condos, landed homes, commercial and industrial buildings across Singapore. Our waterproofing services cover roofs, toilets, bathrooms, balconies, swimming pools and external walls.
As water leakage specialists, we also trace and repair active leaks through ceilings, walls and concealed pipes. Every job starts with a free on-site inspection, and we confirm where the water enters before we quote.
More than 25 years of roof, wet area and leak repair work in Singapore homes and buildings.
We confirm where the water enters before quoting, so you pay to fix the cause, not the stain.
BCA-registered, with ISO 9001, ISO 14001, ISO 45001 and bizSAFE Star. Check our UEN, 201106650R, on the BCA Directory.
Every repair comes with a written warranty. Terms depend on the job and are set out in your quote.
Waterproofing and repainting specialist since 1999. Pick the service closest to your problem.
Flat, metal and tiled roofs sealed with a membrane or coating matched to the roof. For top-floor stains after heavy rain, ponding water or rusting metal roofs.
Toilets, bathrooms, kitchens and balconies waterproofed before tiling, or repaired when water leaks into the unit below.
Ceiling, wall, roof and concealed pipe leaks traced to the source and repaired. Ceiling leaks are common in older HDB flats, where water seeps through the slab from the unit above.
External wall and facade repairs on high-rise buildings without scaffolding.
Polyurethane resin injected into cracks in slabs, basements and lift pits to stop seepage, usually without hacking.
Inspect on site.
Confirm where the water enters.
Written quote with scope, method and warranty.
Repair and water-test before handover.
We use waterproofing systems from Parex, Ardex, KST and Mapei.
A waterproofing specialist in Singapore inspects, seals, and repairs building areas exposed to water (roofs, balconies, bathrooms, swimming pools, and external walls) using membranes, PU grouting, and protective coatings. The trade falls under BCA workhead CR13 and targets tropical-climate failures like heavy rainfall ponding, concrete cracking, and ceiling leaks common in HDB flats, condos, and commercial buildings.
Check three things first: BCA registration under workhead CR13 (verifiable on the BCA Directory at bca.gov.sg), a written warranty covering both materials and workmanship, and approved brands like Davco, Mapei, Ardex, or Sika. Ask for verifiable past project references, a free onsite diagnosis before quoting, and a fixed-price scope so costs don’t balloon mid-job.
Yes. Proseal Contracts Pte Ltd (UEN 201106650R) is BCA-registered as a Singapore building contractor and displays its BCA certification on its website. You can verify the registration directly on the official BCA Directory at bca.gov.sg. Proseal renews its workhead registration under BCA’s Contractors Registration System (CRS), the national registry that governs waterproofing contractors in Singapore.
Proseal Contracts Pte Ltd has provided waterproofing services in Singapore since 1999. The company handles roof and wet-area waterproofing, water leakage repair, PU grouting, concrete repair, and rope-access work across HDB flats, private condos, and commercial buildings, using approved materials from Davco, Mapei, Ardex, and KST.
Waterproofing is preventive: applying membranes and coatings before water damage starts, usually during construction or renovation. Water leakage repair is corrective, fixing an active leak after it appears through PU grouting, crack sealing, or pipe repair. Both fall under BCA workhead CR13 in Singapore. Most properties need waterproofing every 5 to 10 years; leakage repair is only triggered when symptoms appear.
Most waterproofing systems in Singapore last 5 to 10 years, depending on membrane type, exposure, and workmanship. Roof waterproofing under direct sun degrades faster than indoor wet-area systems. Heat-reflective acrylic coatings usually need recoating every 5 to 7 years; cementitious membranes and PU systems can last 8 to 10 years. BCA-registered contractors typically warranty new waterproofing work for 5 to 10 years.
Tell us where the water is showing up. We reply within 10 to 15 minutes to arrange a site visit, and you get a written quote before any work starts.
