Industrial roof waterproofing in Johor: metal and concrete factory and warehouse roofs sealed at laps, gutters and fixings, by an authorised applicator.
We reply within one working day, Monday to Friday.
Also in Kuala Lumpur and the Klang Valley, and Penang, through authorised applicators there.
Industrial roof waterproofing seals a factory or warehouse roof at its laps, fixings, gutters and penetrations, then covers the whole roof with a membrane: SealForce RC40 polyurea on exposed concrete, SealForce AC10 acrylic on metal and free-draining roofs. It is done in sections so production continues.
Usually, yes. The roof is coated in sections, details first, with the sequence agreed with the plant manager; only work directly over sensitive processes needs a pause.
Work over sensitive areas is planned for a shutdown or a weekend, and the section sequence is agreed in writing before the job starts.
The sheets expand in the sun and contract at night, every day. Over the years that movement loosens fixings, opens laps and cracks old sealant, so water gets in at the joints long before the sheets themselves fail.
That is why the details come first: laps, fixings, gutters, skylights and penetrations are cleaned, primed and reinforced before the field coat goes on.
Exposed concrete roofs that pond or carry foot traffic take SealForce RC40 polyurea. Metal and free-draining roofs take SealForce AC10 acrylic, over an anti-corrosion primer on metal and SealForce AP05 on concrete. Both go on at the data sheet thickness.
Rust is treated before a metal roof is primed. A roof with plant or regular foot traffic is an RC40 roof, whatever it is made of.
The technical data sheet of each product, the application method, the film-thickness records and the material warranty, all from the maker.
Consultants and facility managers get the documents before work starts, so the specification can be checked against the roof survey.
| Compared on | A SealForce membrane system | Patching each leak | Re-sheeting the roof |
|---|---|---|---|
| What it is | Details reinforced, then a membrane over the whole roof | Sealant or tape on each leak as it appears | The old sheets replaced with new ones |
| When it is right | Sound sheets or slab with failing joints and coating | An emergency, until the roof is done | Sheets rusted through |
| Production below | Continues, in sections | Continues | Needs protecting while sheets are off |
| The next leak | Laps, fixings and gutters treated at once | At the next lap or fixing that opens | Laps and fixings start new |
| Documents | Data sheets, thickness records, material warranty | Depends on the contractor | The sheet maker’s documents |
A first guide. The roof survey decides which is right for your roof.
The roof is surveyed, the leaks mapped, and the work split into sections so the plant keeps running.
Laps, fixings, gutters, skylights and penetrations cleaned, primed and reinforced before the field coat.
RC40 polyurea on exposed concrete; AC10 acrylic on metal and free-draining roofs, over an anti-corrosion primer on metal and AP05 on concrete; applied to the data sheet thickness.
Film thickness checks and a rain check, with the data sheets and the warranty in the handover file.
Per square foot, quoted after a roof survey. Five things decide it: the roof area and type, the laps, fixings, gutters and penetrations to detail, rust treatment on a metal roof, access and safety equipment, and the section programme around production. Detailing is most of the labour on a metal roof; on a concrete roof the membrane area is. Rayson publishes no price list; the quotation states the programme and the sections.
Also in Kuala Lumpur and the Klang Valley, and Penang, through Rayson-authorised applicators there; availability confirmed per enquiry.
The build-up, top to bottom · diagram, not to scale
Metal and free-draining roofs: SealForce AC10, over an anti-corrosion primer on metal or AP05 on concrete.
Rayson SealForce RC40 is a two-component, cold-applied aliphatic polyurea waterproofing membrane for exposed roofs — roller-, brush- or spray-applied, UV-stable and walkable, with certified cool-roof reflectance.
Specifications →
Rayson SealForce AC10 is a one-part, water-based acrylic waterproofing membrane for exposed roofs, old roof tiles and external walls — applied cold, straight from the pail, by brush, roller or airless spray, and drying to a seamless, elastic, UV-resistant film.
Specifications →
Rayson SealForce AP05 is a one-part, water-based acrylic primer for the SealForce waterproofing range — brushed or rolled onto concrete, render, brick, stone and roof tiles to seal pores, bind dust and give SealForce AC10 a firm surface to bond to.
Specifications →The system is specified by the company that makes the material, and installed by an independent applicator Rayson has authorised, not chosen from whatever a supplier had on the shelf that week.
Every Rayson material on your floor or roof has a published technical data sheet. You can read what went in, and so can your consultant.
Rayson warrants the material as its maker. The authorised applicator, an independent company that contracts with you, warrants the workmanship. Each warranty is issued by the company responsible for it.
The products, data sheets and application methods are the ones Rayson publishes in Singapore. Nothing is rebadged for Malaysia.
Contractors and facility teams buy the same materials direct from the maker, with application guidance. The applicator is there when you want the job done for you.
Each with the Rayson layers it uses
All jobs in Johor ↗Flat concrete, tiled and metal roofs: the cause found first, then a membrane over the whole roof.
Flat roofs that pond or are walked on: SealForce RC40 polyurea.
Quoted after inspectionForklift aisles, production floors and loading bays in Johor’s industrial parks, specified by the maker.
Storage halls: FloorGuard R50 roller coat. Hot washdown or spillage: PurScreed PC70.
Quoted after inspectionRead the stain first: toilet above, roof, pipe or wall each need a different repair.
Under a roof: a roof membrane instead. A steady drip in any weather: a plumber first.
Quoted after inspectionIn white, SealForce RC40 reflects much of the sun’s heat, which keeps the roof slab and the space below cooler than a dark roof. The data sheet gives the reflectance figures.
Yes. Rayson sells the membranes and primers direct to contractors and facility teams, with the data sheets and application guidance; the Rayson-authorised applicator is there when you want the job done for you.
Rayson warrants the membrane as its maker; the Rayson-authorised applicator warrants its workmanship. Both are written into the quotation.
Tell us what the surface is, where it is and what it has to withstand. Rayson replies with a system recommendation; for installation, the applicator for your area in Johor, Kuala Lumpur or Penang is introduced to quote the job.
Malaysia launch: 1 March 2027. Enquiries are welcome now; supply, site assessment and installation timing are confirmed for each project.