D19 · Mass Landed
Roof Waterproofing in Serangoon Gardens, Singapore
Serangoon Gardens roofs are mostly 1980s vintage flat-slab construction with original membranes that have now had 35+ years of monsoon and UV exposure. Leaks are common, particularly at the slab-to-parapet junction and around aging penetrations for old hot-water service lines and air-con pipework.
Why Serangoon Gardens
Roof Waterproofing for Serangoon Gardens homes
Most owners here have already patched their roofs multiple times over the years before calling us for a proper system replacement. Our first job is usually convincing the owner that another patch will fail within 12–18 months and that a full membrane strip-and-replace is the right move. Roof areas are modest, typically 600–1,000 sqft, which keeps total project cost reasonable.
Value-pragmatic pricing applies, S$5,000–S$12,000 for a full torch-on or PU coating system on a typical 700–900 sqft roof. PU coatings at the cheaper end are common where budgets are constrained, with the understanding that the system will need recoating in 6–8 years.
A terrace off Lichfield Road had its 800 sqft flat roof stripped after the fourth recurring leak in 5 years. Full torch-on bitumen reinstall with new flashings and an additional drainage outlet ran 4 days on-site.
Pricing Guide
What to Budget in Serangoon Gardens
Budget
$5,000 – $10,000
Acrylic coating system, suitable for minor leaks and recoating
Mid-Range
$10,000 – $18,000
Torch-on modified bitumen membrane with 10-year warranty
Premium
$18,000 – $25,000
Full system replacement: membrane, insulation, drainage, flashings
Prices are indicative for Serangoon Gardens (D19) and vary by project scope. Get a personalised quote.
Common Questions
Roof Waterproofing in Serangoon Gardens — FAQ
How much does waterproofing cost per square foot in Singapore?
Waterproofing costs $8–$25 per square foot depending on the system. Basic PU coating runs $8–$12/sqft. Torch-on membrane systems cost $15–$20/sqft. Premium cementitious systems with fabric reinforcement run $20–$25/sqft. Total project costs typically range from $5,000 to $25,000.
What is the best waterproofing method for a flat roof?
For Singapore flat roofs, torch-on modified bitumen membranes offer the best balance of durability and cost. They last 10–15 years and handle our UV and rainfall conditions well. For roofs with heavy foot traffic, cementitious waterproofing with a protective screed is preferred.
What is the difference between torch-on membrane and liquid membrane?
Torch-on membranes are pre-formed sheets heat-welded to the surface — very durable (10–15 years) but require skilled application. Liquid membranes (PU coatings) are painted on, easier to apply around complex shapes, but last 5–8 years. We recommend torch-on for large flat areas and liquid for detailed work.
Can you fix a roof leak as an emergency?
Yes. We offer emergency leak response for active roof leaks. Temporary waterproof patches can be applied within 24–48 hours to stop immediate damage, followed by a permanent repair scheduled when weather permits.
What warranty do you offer for roof waterproofing?
Our premium torch-on membrane systems come with a 10-year material and workmanship warranty. PU coating systems carry a 5-year warranty. All warranties cover both materials and labour for any leak that develops in the treated area.
How long does roof waterproofing last?
Quality membrane systems last 10–15 years. Polyurethane coatings typically last 5–8 years before recoating is needed.
Have a different question? See the full Roof Waterproofing guide or WhatsApp us.
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