NexTech Waterproofing is a trusted roof waterproofing contractor for landed houses across Singapore — terrace houses, semi-detached homes, bungalows, and Good Class Bungalows. We specialise in identifying the exact source of every roof leak and applying the correct waterproofing system for lasting, permanent protection.
Singapore's tropical climate — over 2,300 mm of rain per year, intense UV exposure, and near-constant humidity — degrades roofing materials faster than in any other region. Landed homes are particularly vulnerable because their flat or low-pitch roofs bear the full force of monsoon rainfall with no shelter above. Without proper waterproofing, every monsoon season causes structural damage that compounds year after year.
Roof leaks in Singapore terrace houses, semi-Ds, and bungalows share common causes. Understanding the root cause is critical — patching surface symptoms without treating the underlying failure leads to recurring leaks within one or two monsoon seasons.
NexTech assesses your specific roof type, condition, and leak pattern before recommending a system. We never apply a one-size-fits-all approach — the right solution for a flat RC roof on a terrace house is different from a pitched tile roof on a bungalow.
The gold standard for Singapore landed house flat roofs. Torch-applied or self-adhesive SBS/APP polymer membranes create a seamless, fully-bonded watertight layer. Handles thermal movement and extreme rainfall loading. Best for flat or low-pitch RC roofs on terrace houses, semi-Ds, and bungalows.
A cost-effective option for roofs in structurally sound condition with minor surface cracking or UV weathering. Low-VOC, water-based elastomeric coatings bridge hairline cracks and provide a reflective, watertight finish. Suitable for concrete flat roofs and roof terraces.
For active water ingress through concrete cracks, construction joints, and beam interfaces. Polyurethane resin is pressure-injected to fill internal voids and expand on contact with moisture, stopping leaks from within the structure. Used alongside membrane systems for comprehensive treatment.
Replacement of cracked, slipped, or broken roof tiles. Re-bedding of ridge cappings and re-pointing of mortar joints. Application of penetrating tile sealants and valley flashing replacement. Designed for pitched tile roofs common on terrace houses and bungalows in established estates.
For roofs beyond economical repair — severely deteriorated membranes, extensive tile damage, or structural issues requiring substrate reinstatement before waterproofing. We manage teardown, substrate repair, and full re-waterproofing for concrete flat roofs, pitched tile systems, and metal deck roofs.
Cleaning, repair, and where necessary replacement of gutters, downpipes, and roof drainage outlets. Essential maintenance often overlooked that causes roof and wall damage from pooling water and overflow behind parapets. Paired with every membrane job to protect the investment.
Singapore terrace houses — particularly those in estates built before 1990 — typically feature a flat reinforced concrete (RC) roof over the main structure, with a separate pitched tile roof over the rear extension and car porch. Both areas require different waterproofing approaches. The flat RC roof is best treated with a polymer membrane system, while the pitched tile section benefits from tile repair and sealant application. Flashings at the parapet wall and roof-to-tile interfaces are the most common leak points and are always replaced as part of a complete treatment.
Semi-Ds present larger and more complex roof areas with multiple roof levels, higher parapets, and often mixed roof systems — flat RC sections combined with pitched tile or metal deck portions. Corner and wall-junction flashings are particularly vulnerable. NexTech conducts a full roof-level survey for all semi-D projects to map every potential leak path before work begins.
Bungalows and Good Class Bungalows require the most comprehensive approach — large roof areas, multiple levels, extensive parapet and gutter systems, and often premium finishes requiring careful material selection. Scaffolding is typically required. NexTech has completed multiple full bungalow membrane waterproofing projects across Holland Road, Bukit Timah, Serangoon Gardens, and East Coast. Our team is experienced in managing large-scale residential waterproofing without damage to landscaping, pools, or premium interior finishes.
Cluster houses and townhouses in private estates share roof structures with shared party walls — meaning a leak on your roof can affect your neighbour's interior, or vice versa. NexTech handles the practical and management complexities of cluster roof waterproofing, including coordination with MCST management where required.
The following price ranges are indicative guides for landed house roof waterproofing in Singapore. Actual costs depend on roof size, accessibility, severity of existing damage, and the waterproofing system recommended after inspection. All quotes are free and without obligation.
| Service | Property Type | Typical Range (SGD) | Warranty |
|---|---|---|---|
| Acrylic Elastomeric Coating | Terrace house flat roof | $1,800 – $3,500 | 5 years |
| Polymer Membrane System | Terrace house | $3,000 – $6,000 | 10 years |
| Polymer Membrane System | Semi-detached house | $5,000 – $12,000 | 10 years |
| Polymer Membrane System | Bungalow / GCB | $10,000 – $30,000+ | 10 years |
| PU Injection Grouting | Active cracks / joints | $1,200 – $4,000 | 3 years |
| Roof Tile Repair | Pitched tile roofs | $800 – $3,000 | 1–2 years |
| Full Roof Replacement | All landed types | $15,000 – $45,000+ | Full Warranty |
* All prices are indicative for 2026. NexTech provides a fully itemized quote after a free on-site inspection — no hidden charges, no surprises.
NexTech Waterproofing provides roof waterproofing for landed houses across all areas of Singapore including:
East: Tampines, Bedok, Pasir Ris, Changi, Loyang, Upper East Coast Road, Siglap, Frankel Estate, Opera Estate
North-East: Sengkang, Punggol, Hougang, Serangoon, Serangoon Gardens, Kovan, Upper Serangoon
Central: Bishan, Toa Payoh, Novena, Thomson, Caldecott, MacRitchie, Balestier
North: Yishun, Woodlands, Sembawang, Admiralty, Mandai, Upper Thomson
West: Jurong East, Jurong West, Bukit Batok, Choa Chu Kang, Clementi, West Coast
Core Central: Bukit Timah, Holland Village, Queenstown, Orchard, Tanglin, River Valley
Good Class Bungalow Areas: Nassim Road, Cluny Road, Dalvey Road, Ridout Road, King Albert Park, Sixth Avenue, White House Park
No additional travel charges apply to any Singapore location.
Roof waterproofing for a Singapore terrace house typically costs $3,000 to $6,000 for a polymer membrane system. Semi-detached houses range from $5,000 to $12,000, and bungalows range from $10,000 to $30,000 or more depending on roof size and condition. More affordable acrylic elastomeric coating starts from $1,800 for terrace houses with roofs in good structural condition. PU injection grouting for active crack leaks starts from $1,200 per affected area. Costs depend on roof area, accessibility, severity of existing damage, materials selected, and whether scaffolding is required. NexTech provides a free on-site inspection and fully itemized quotation — call 8020 8694 or WhatsApp us.
For most Singapore terrace house flat RC roofs, a torch-applied or self-adhesive polymer membrane system (SBS or APP modified bitumen) is the most durable solution. It creates a fully-bonded, seamless watertight layer capable of handling Singapore's high rainfall (2,300mm/year), extreme UV exposure, and thermal movement. Polymer membrane systems carry a 10-year warranty and last 10–15 years. For terrace house roofs in good structural condition with only surface cracking, acrylic elastomeric coating is a more cost-effective alternative. For active water ingress through concrete cracks, PU injection grouting is applied first to stop the leak, followed by a membrane or coating system. The right choice depends on your specific roof condition — NexTech assesses and recommends after a free inspection.
A professionally installed polymer membrane system lasts 10–15 years on Singapore landed house roofs. Acrylic elastomeric coatings provide 5–8 years of protection. NexTech backs all polymer membrane installations with a 10-year written workmanship warranty. To maximize lifespan, we recommend a roof inspection every 2–3 years to clear gutters, check flashing integrity, and identify any early-stage wear before it develops into a full leak.
For most waterproofing and roof repair work on existing landed houses, BCA approval is not required. You can proceed directly with membrane waterproofing, elastomeric coating, tile repairs, PU injection, and leak rectification without planning submission. However, if your project involves structural changes — such as altering the roof pitch, adding a new roof level, or structural repair to beams and columns — a Qualified Person (QP) submission to the BCA will be required. NexTech advises on all regulatory requirements as part of the free inspection and will flag any scope that requires a QP engagement before work begins.
A standard terrace house roof waterproofing job typically takes 2–4 working days. Larger semi-detached roofs take 4–7 days. Bungalow roofs requiring scaffolding may take 7–14 days depending on size and scope. The timeline depends on roof area, preparation required (removal of old membrane, crack repair, primer), weather conditions (waterproofing cannot proceed in rain), and cure times between coats. NexTech schedules jobs carefully around Singapore's weather patterns and keeps you updated throughout.
NexTech Waterproofing provides a 10-year written workmanship warranty on all polymer membrane waterproofing installations. Acrylic elastomeric coating systems carry a 5-year warranty. If any leakage attributable to our workmanship occurs within the warranty period, we will rectify it at no cost to you. Manufacturer material warranties are also passed on to clients where applicable. The warranty certificate is issued in writing on completion of every job — not just promised verbally.
Recurring roof leaks after waterproofing are almost always caused by one of three issues: (1) incorrect diagnosis — the contractor patched visible damage without finding the actual entry point, so water finds a new path; (2) wrong system selection — applying surface coating over a substrate that requires mechanical stripping and membrane replacement; or (3) poor workmanship — inadequate substrate preparation, insufficient lap joints, or missed flashing details. NexTech conducts a thorough root-cause diagnostic before recommending any system, including water-tracing where the entry point is unclear. We fix leaks once — permanently.
Yes. NexTech Waterproofing is fully islandwide with no additional travel charges for any Singapore district. We serve all landed property areas including Tampines, Bedok, Serangoon Gardens, Bukit Timah, Holland Road, Queenstown, Jurong, Yishun, Woodlands, Sengkang, Punggol, and all Good Class Bungalow (GCB) districts. Response time for a free inspection is typically within 1–3 working days.
Yes. NexTech manages full scaffolding installation for bungalow and GCB roof waterproofing projects where direct access is required to parapet walls, roof edges, and difficult-to-reach sections. Scaffolding cost is included in the project quotation — no surprises. We coordinate access carefully to minimize disruption to landscaping, pool areas, and interior finishes. All scaffolding work complies with MOM workplace safety requirements.
Free on-site inspection · Transparent itemized quote · 10-year written warranty · Islandwide coverage · Same-day response
NexTech Waterproofing · +65 8020 8694 · nextechwaterproofing@gmail.com · 11C Tyrwhitt Rd #04-11 Singapore 207529
