Waterproofing
PU injection is the method for a leak you can point at: a crack that is actively passing water. The resin is injected under pressure, expands on contact with the water and fills the crack from inside.
Starting from RM350 per job
Starting Prices
Indicative starting prices from our 2026 market research. Final quotation depends on site condition, scope and materials.
PU Injection Crack Sealing starts from
Starting from RM350 per job
Prices start from the stated amount. Final quotation depends on actual site condition, scope, materials, accessibility and installation requirements.
Is this the right service?
What's included
What's included
Pricing Guidance
Indicative starting prices based on current 2026 market research for Kuala Lumpur, Selangor and the Klang Valley. Final quotation depends on actual site condition, scope, materials and installation requirements.
PU injection grouting to seal active leak at ceiling or wall crack. Flat rate per bathroom ceiling where applicable.
Duration: 2–4 hours
Starting from RM350 per job
Prices start from the stated amount. Final quotation depends on actual site condition, scope, materials, accessibility and installation requirements.
Fast Photo Quote
Send them to us directly on WhatsApp and we will assess the PU Injection Crack Sealing work from the pictures before a quotation is prepared.
A wide shot, a close-up and your location are usually enough for us to assess the work.
Cost Factors
Understanding what drives price helps you compare quotes fairly and prepare useful details for assessment.
A single short crack is one price; several separate cracks each need their own port line.
A crack under constant head takes more resin than a slow seep.
Working overhead in a confined ceiling void is slower than an accessible wall.
Materials
Materials are chosen based on property type, usage and budget. We use standard trade materials suited to Malaysian homes.
Expands on contact with water to fill the crack from within rather than bridging it on the surface.
Set at intervals along the crack so resin can be driven the full depth.
Our Process
We confirm which crack is actually passing water, not just which one is visible.
Ports are drilled and fitted at intervals along the crack.
Resin is injected under pressure until it travels the length of the crack.
Ports are removed and the injection points patched flush.
The area is checked after the resin has cured to confirm the leak has stopped.
FAQs
Straight answers to the questions customers ask us most about this service.
It is a durable repair for the crack it seals, and it stops water passing that path. What it does not do is waterproof the whole slab. If the surface above has a failed membrane, water will eventually find another crack, and a surface waterproofing system is the better answer.
No, and that is the main reason people choose it. Injection is done from the leaking side, usually the ceiling below, so the finished floor above stays intact. That matters most when the leak is under a tiled bathroom floor.
Injection seals one specific crack from within; a membrane protects a whole surface from above. Injection suits a defined, active leak. If the slab has widespread failure or the area is due for retiling anyway, a full membrane system is more appropriate.
No. Injection stops the water; it does not remove the mark it left. Once the area has dried out fully, the ceiling can be sealed with a stain-blocking primer and repainted, which is quoted separately as painting work.
Problems We Solve
Water damage on a ceiling signals a leak above. Renovix finds the source, repairs the damage and stops it recurring.
View problemWater leaks hide behind walls and under floors. Renovix finds the source, repairs the leak and stops the damage.
View problemA damp wall is a persistent moisture problem. Renovix finds the reason it stays wet and treats the wall so it dries out for good.
View problemA water stain is a moisture mark that should be traced, not just painted over. Renovix finds the cause and restores a clean surface.
View problemKnowledge Hub
Background reading on cost, materials and what the work involves.
Troubleshooting
A dried mark from a fixed problem and a live leak look almost identical from the floor. Here is how to tell them apart, and why repairing the ceiling first is the wrong order.
Read guideMaterials & comparisons
Waterproofing is not one product. Matching the system to the surface — and to whether it will be tiled, walked on or exposed to sun — is what decides how long it lasts.
Read guideService Areas
Waterproofing and leakage repair services are available across Kuala Lumpur, Selangor and the wider Klang Valley, including high-rise units and landed homes.
The federal capital — heritage shophouses, mid-century landed estates, older flats and a dense high-rise belt, all within one city.
Malaysia's most developed state — from 1950s Petaling Jaya and royal Klang to fast-growing corridors like Puchong, Kota Damansara and Cyberjaya.
Local housing stock, common problems and practical service notes for neighbourhoods and towns across the Klang Valley.
Not sure if we cover your area? Ask us — we serve most Klang Valley locations.
Get a Free Quote
Share the details of the work, your property type and location, and we will guide the next step.
