# Roof Waterproofing Singapore | Flat, Metal and Tiled Roofs | Seepwise > Roof waterproofing for Singapore landed homes: flat concrete roofs, metal roofs and tiled roofs. Membrane choices explained, inspection before quote. URL: https://waterproofing.affiliateinsider.buzz/roof-waterproofing/ - Home - / Roof waterproofing # Roof Waterproofing in Singapore For landed homes. HDB and condo roofs belong to the Town Council or the MCST. [Request an inspection](#request) Last updated: 2026-10-10 [Seepwise](/) arranges roof waterproofing for landed homes in Singapore: flat reinforced-concrete roofs, metal roofs and tiled pitched roofs. If you live in an HDB block, the roof is common property maintained by the Town Council, and in a condominium it is usually common property managed by the MCST ([HDB](https://www.mynicehome.gov.sg/hdb-how-to/maintain-your-flat/), [BCA](https://www1.bca.gov.sg/docs/default-source/docs-corp-regulatory/building-maintenance-and-strata-management/bca_guide-13_water_seepage.pdf)). ## What happens on the first visit The inspection covers the roof surface, the edges and parapets, the outlets and downpipes, and any penetrations (vent pipes, solar mounts, aircon brackets), because most roof leaks enter at a joint rather than through the middle of a slab. On metal roofs the specialist checks the laps between sheets and the fixings. You get photos, the likely entry points and a recommended system before any quote. ## Singapore's rain decides the timing Singapore's Northeast Monsoon runs from December to early March, and its early part, December to early January, is the wettest period of the year, with monsoon surges that bring prolonged heavy rain. Afternoon thunderstorms are common between the monsoons, from late March to May and October to November ([World Bank Climate Knowledge Portal](https://climateknowledgeportal.worldbank.org/country/singapore/climate-data-historical)). Annual rainfall has also trended up, from 2,192 mm in 1980 to 2,727 mm in 2014 ([NCCS](https://www.nccs.gov.sg/files/docs/default-source/news-documents/infographic---climate-change-in-singapore.pdf)). The practical consequence: roof work is easiest to schedule in the drier spells, and a roof that is already marginal tends to fail in December. ## Which system fits which roof Flat concrete roofs are usually waterproofed with a torch-on bituminous membrane or a liquid-applied membrane such as polyurethane, over a properly prepared and sloped surface. Ponding water on a flat roof shortens the life of any membrane, so falls to the outlets matter as much as the product. Metal roofs mostly leak at the laps between sheets and at screw holes as fixings corrode. The fix is usually re-sealing laps and fixings or a liquid membrane over the problem area, rather than a new roof. Tiled roofs leak at cracked or slipped tiles, ridges and valleys, and at flashings where the roof meets a wall. ## Why we quote after inspection only There is no reliable published per-square-metre price for roof waterproofing on Singapore landed homes. The substrate (cracks, existing layers, slope) changes the price more than the membrane does, so any firm price given over the phone is a guess. You get an itemised quote that separates preparation, the membrane system and coats, and the warranty. ## What is included - ✓Roof surface, edges, parapets and outlets inspected - ✓Penetrations and flashings checked - ✓Laps and fixings checked on metal roofs - ✓System recommended for the roof type - ✓Surface preparation and falls corrected where needed - ✓Membrane applied to the specified coats - ✓Water test of outlets after the work - ✓Itemised quote and written warranty terms ## Painting over it vs a quick fix vs a proper repair DIY Quick fix Proper repair Starting point Sealant on the visible crack One coat over everything Entry points found first Surface preparation None Minimal Cleaned, repaired, falls corrected System Hardware-store coating Single generic product Matched to concrete, metal or tile Outlets and downpipes Ignored Ignored Cleared and tested Warranty in writing No Vague Itemised ## What it costs Landed roofs are quoted after inspection only: no reliable published Singapore per-square-metre rate exists, and the substrate drives the price. [Try the cost estimator](/tools/waterproofing-cost-estimator/) or read the [waterproofing cost guide](/guide/waterproofing-cost-singapore/). ## Related guides - Top-Floor HDB Ceiling Leak: Who Fixes the Roof? - How Much Does Waterproofing Cost in Singapore (2026)? - How to Choose a Waterproofing Contractor in Singapore ## How it is done - Inspection. Surface, joints, outlets and penetrations photographed. - Scope and system. Torch-on, liquid PU or targeted sealing, chosen per roof. - Preparation and application. Repairs and falls first, then the membrane in specified coats. - Test and handover. Outlets water-tested, photos and warranty terms handed over. Water dripping now? Switch off any circuit near the drip, put a bucket under it and photograph the stain with the time. Then send a request and tick "dripping right now". [What to do in an active leak](/emergency-leak-repair/) Standards and methods - Moisture mapping before quoting - Ponding test 24h+ on wet areas - Membrane turned up the walls - HDB permit for hacking, via the contractor - BCA workhead CR13 for waterproofing installers Request roof waterproofing A specialist calls you back to book an inspection. Request received. A specialist will contact you on the number you gave. If water is near electrics, switch off that circuit at the distribution board and keep clear until then. Get roof waterproofing quoted after a proper inspection. A specialist calls you back to book an inspection. Tell us what you see and the type of home. [Request an inspection](/contact/#request) ## Questions people ask My HDB flat is on the top floor and the ceiling leaks. Is this a roof job for me? + No. The HDB roof is common property, so report it to your Town Council, which handles roof-related leakage. How much does roof waterproofing cost for a landed house? + There is no reliable published Singapore rate; the surface condition drives the price. Expect an itemised quote after the inspection, separating preparation, the system and the warranty. When is the best time to waterproof a roof in Singapore? + Before December. The early Northeast Monsoon, December to early January, is the wettest period of the year. Torch-on or liquid membrane? + Both work on flat concrete roofs. Torch-on bituminous sheets suit large, simple areas; liquid-applied membranes suit roofs with many penetrations and details. The roof's condition decides. Is there a charge for sending a request? + No. Sending a request costs nothing. The specialist explains any inspection fee before the visit. ## Related services [Roof leak repairWater coming through during a storm needs the entry point found, not a new roof.](/roof-leak-repair/)[Water seepage repairBubbling paint and white powder on a wall are water moving through it. The source decides the fix.](/water-seepage-repair/)[Water leak detectionFind it before you hack it. Detection is cheaper than opening the wrong wall.](/water-leak-detection/)