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.
SealForce AP05 is the first coat of Rayson's acrylic roof and wall system: a milky-white acrylic dispersion in water, stirred and applied straight from the pail by brush or roller. It soaks into the surface, binds loose dust, firms weak surface layers and seals the pores, then dries to a clear film — the change from white to clear shows when it is ready for the membrane.
It does three jobs under SealForce AC10. On smooth, dense concrete it acts as a bonding primer; on rough, porous concrete it seals the pores so air cannot rise through the wet membrane as bubbles and pinholes; and on brick, stone and old tiles it consolidates the surface so the membrane bonds to sound material rather than dust. Very porous surfaces take a second coat.
It is a primer, not a waterproofing layer, and it must always be covered by the membrane. It belongs to the water-based acrylic system: SealForce WB20 needs no primer, and the polyurea membranes, SealForce RC40, RC30, SP200 and SP210, each take the primer named in their own data sheets.
Supplied by Epovex Coatings Sdn. Bhd., Company No. 202601042128 (1704223-A). The Malaysia launch is scheduled for 1 March 2027; confirm availability and lead time for your project. Installation through an authorised applicator in Johor, Kuala Lumpur or Penang introduced by Rayson, who quotes and warrants the workmanship, or by your own crew with Rayson’s application guidance.
Send an enquiry| Specification | Data sheet value |
|---|---|
| Coverage | Approximately 0.1–0.3 kg/m² per coat, depending on absorbency; a 20 kg pail primes about 65–200 m² per coat. Very porous surfaces take a second coat |
| Mixing | One part, ready to use — stir for at least 1 minute with a slow paddle until uniform, without whipping in air |
| Drying and curing | Dry when the milky white has turned clear — about 30 minutes, longer in cool or humid weather. Apply SealForce AC10 once it has dried clear. Protect from rain until dry |
| Pack sizes | 20 kg pail |
Rayson-authorised applicators in Johor, Kuala Lumpur and Penang install Rayson SealForce AP05 on these jobs; its layer is marked in each build-up. You can also order it direct and apply it yourself, with the step-by-step guide. Each page shows how the work runs, what to send for a quotation and what decides the price.
Order it direct, with a step-by-step guide
SealForce AC10 acrylic, RC40 polyurea and WB20 wet-area membrane, sold direct with the coverage and a step-by-step guide.
Flat roofs and decks that are walked on: SealForce RC40 polyurea. Toilets, under the tiles: SealForce WB20.
Quoted per orderJobs 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 inspectionDamp, peeling, mouldy walls: rain through the render, rising damp or a leak next door.
Water from a wet area behind the wall: that room is re-waterproofed instead.
Quoted after inspectionLarge flat and metal roofs in Johor’s industrial parks, coated without stopping production.
Metal and free-draining roofs: SealForce AC10, over an anti-corrosion primer on metal or AP05 on concrete.
Quoted after inspectionJobs in Kuala Lumpur and Selangor
Kuala Lumpur and Selangor ↗Flat roofs, porch roofs, tiled roofs and factory metal roofs in the Klang Valley: the leak traced, then the Rayson membrane that suits the roof.
Roofs that drain freely and old roof tiles: SealForce AC10 over AP05 primer. Metal roofs: AC10 over an anti-corrosion primer, with fleece at the laps.
Quoted after inspectionIt prepares concrete, render, brick, stone and roof tiles for SealForce AC10, the acrylic roof and wall membrane: a bonding primer on smooth concrete, a pore sealer on rough concrete, and a dust binder on weathered masonry and tiles. It is brushed or rolled on, dries clear and is always covered by the membrane.
SealForce AC10, on concrete, render, brick, stone and tiles. SealForce WB20 does not: it goes straight onto the prepared screed or concrete of a toilet or bathroom. The polyurea membranes, SealForce RC40, RC30, SP200 and SP210, each take the primer named in their own data sheets, not AP05. Metal under AC10 takes an anti-corrosion metal primer.
About 0.1 to 0.3 kg/m² per coat, depending on how absorbent the surface is; a 20 kg pail primes about 65 to 200 m² per coat. Very porous concrete, brick or tiles take a second coat, and a small test area shows the real figure for each surface.
Until the milky white has turned completely clear: about 30 minutes, longer in cool or humid weather. Then apply SealForce AC10, cleaning off any dust that has settled first. Protect the primer from rain until it is dry.
Yes, once the surface is sound: loose tiles or bricks fixed, broken ones replaced, open joints pointed, and the surface power-washed and dried. It suits unglazed ceramic and clay tiles; on glazed tiles or other dense surfaces, a trial area confirms adhesion first.
Both are one-part, water-based acrylic primers, for different systems. AP05 is the SealForce waterproofing primer for roofs and external walls under SealForce AC10. PrimeBond W10 is the floor primer under Rayson's low-odour water-based urethane finishes, such as UraForce WB52.
No. It binds dust and seals pores ahead of the membrane, but it is not a waterproofing layer or a wearing surface. It must be covered by SealForce AC10.
SealForce AP05 is part of Rayson's upcoming waterproofing release, alongside SealForce AC10. Send the project details and your required date, and Rayson will confirm supply timing, quantities and, where you need one, an applicator in the Rayson network before you commit.
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.