# Spalling Concrete Repair Singapore | HDB GRA, Method and Cost | Seepwise > Spalling concrete repair in Singapore: why ceilings crack and fall, how it is repaired, HDB's Goodwill Repair Assistance and the 10-year new-flat warranty. URL: https://waterproofing.affiliateinsider.buzz/spalling-concrete-repair/ - Home - / Spalling concrete repair # Spalling Concrete Repair in Singapore Cracked or bulging ceiling plaster over rusty steel is spalling. It spreads if left. [Request an inspection](#request) Last updated: 2026-10-10 [Seepwise](/) arranges spalling concrete repair for HDB flats, condos and landed homes. HDB explains spalling as embedded steel bars deteriorating and pushing off the concrete cover, most often in bathrooms, where humidity speeds it up, and warns that neglected spalling can spread and become a safety hazard ([HDB](https://www.mynicehome.gov.sg/hdb-how-to/maintain-your-flat/)). ## What happens on the first visit The specialist sounds the ceiling or wall to find hollow areas beyond the visible crack, checks how far the steel corrosion has gone, and looks for the moisture source that is driving it, usually a humid bathroom or a slab leak. In HDB flats you also get the paperwork needed if you choose HDB's Goodwill Repair Assistance route. ## How spalling is repaired Loose and hollow concrete is removed back to sound material, the exposed steel bars are cleaned and treated against corrosion, the section is rebuilt with a repair mortar, and the area is sealed and repainted. HDB's own prevention advice is to repaint ceilings regularly, improve ventilation in wet areas and seal ceiling cracks promptly ([HDB](https://www.mynicehome.gov.sg/hdb-how-to/maintain-your-flat/)). ## HDB help: GRA, HIP and the new-flat warranty - New flats: HDB's warranty covers spalling concrete for 10 years (HDB). - Home Improvement Programme: spalling repair is one of HIP's essential improvements, fully funded by the Government (MND). - After the defects period: owners can ask for HDB's Goodwill Repair Assistance, where HDB carries out the repair and co-pays 50%, with the owner paying the rest (MND). The GRA route can take longer than engaging a contractor yourself; the choice is cost share against speed. See [HDB spalling concrete: what HDB pays](/guide/hdb-spalling-concrete/). ## Is it dangerous? Spalling pieces can fall. HDB treats it as a safety issue once it spreads ([HDB](https://www.mynicehome.gov.sg/hdb-how-to/maintain-your-flat/)). If a section above a bed, sink or walkway is bulging or loose, keep clear of it and get it inspected; small hairline cracks with rust stains are the early stage and the cheapest to fix. See [is spalling concrete dangerous](/guide/is-spalling-concrete-dangerous/). ## What is included - ✓Sounding to find hollow areas - ✓Loose concrete removed to sound material - ✓Steel bars cleaned and treated - ✓Section rebuilt with repair mortar - ✓Sealed and repainted - ✓Moisture source identified - ✓Paperwork for HDB GRA if you choose it - ✓Photos of the exposed steel before covering ## Painting over it vs a quick fix vs a proper repair DIY Quick fix Proper repair Approach Fill and paint Patch the visible crack Back to sound concrete Steel treated No Rarely Cleaned and protected Hollow areas found No No Sounded first Cause addressed No No Humidity or leak identified Comes back Within months Often Least likely ## What it costs A 2017 report quoted spalling repairs from around S$300 (a phone-sized patch) to S$1,200 (a whole HDB toilet ceiling) ([PropertyGuru](https://www.propertyguru.com.sg/property-management-news/2017/1/144444/fix-spalling-concrete-before-it-becomes-a-serious-problem)). Treat this as a floor: prices have risen since. [Try the cost estimator](/tools/waterproofing-cost-estimator/) or read the [waterproofing cost guide](/guide/waterproofing-cost-singapore/). ## Related guides - Does HDB Pay for Spalling Concrete Repairs? - Is Spalling Concrete Dangerous? - How Much Does Spalling Concrete Repair Cost in Singapore? ## How it is done - Sound and assess. Hollow areas mapped, extent of corrosion checked. - Break out. Loose concrete removed, steel exposed. - Treat and rebuild. Steel treated, repair mortar applied. - Seal and repaint. Finish restored, ventilation advice given. 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 spalling concrete repair 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 spalling concrete repair 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 What causes spalling concrete in HDB flats? + Embedded steel bars deteriorate and push off the concrete cover. It is most common in bathrooms, where humidity speeds it up. Does HDB pay for spalling concrete repair? + New flats have a 10-year warranty. Under HIP it is fully funded. After the defects period, the Goodwill Repair Assistance scheme co-pays 50%. How much does spalling repair cost? + A 2017 report quoted around S$300 for a phone-sized patch up to about S$1,200 for a whole HDB toilet ceiling. Prices have likely risen since. Can I just paint over it? + Paint hides it for a while, but the steel keeps corroding and the concrete keeps breaking off. HDB advises early repair. 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 [Ceiling leak repairFind where the water enters, fix it at the source, and know who pays before work starts.](/ceiling-leak-repair/)[Toilet waterproofingA wet area that stays dry for years needs three things done in order: membrane, screed, test.](/toilet-waterproofing/)[Water seepage repairBubbling paint and white powder on a wall are water moving through it. The source decides the fix.](/water-seepage-repair/)