ACTFLEX 900R Internal 1.4m x 20m

• Internal wet areas - showers, bathrooms, ensuites and laundries - waterproofed in accordance with AS 3740
• Beneath direct-stick tiling on the fabric face
• Beneath bonded screeds using FORSPEC SCREEDX, FORCEM SCREED BINDER or ACTFLEX CRYSTAL BOND
• Over existing cured screeds, primed with two coats of ACTFLEX EP250
• Wet areas with electric underfloor heating - cables fully encapsulated in a FORSPEC screed or levelling compound beneath the membrane, never directly against the membrane underside
• Non-exposed internal transitions into ACTFLEX 906 WPU or ACTFLEX 989 CWP liquid membrane, joined with ACTFLEX SA TAPE

Surface suitability

• Concrete (structurally sound, installed to the relevant Australian Standard; newly poured concrete cured a minimum of 28 days)
• Masonry (structurally sound, clean, dry, sharp protrusions and debris removed)
• Sand/cement screeds (existing cured screeds primed with two coats of ACTFLEX EP250, second coat fully cured before the adhesive)
• Plywood (bonded with ACTFLEX 302 Adhesive)
• Fibre cement sheet (lightweight fibre cement sheet flooring: contact FORSPEC Technical Services for current fixing and jointing guidance)
• Paper-faced plasterboard (bonded with ACTFLEX 302 Adhesive)
• Any non-standard substrate (contact FORSPEC Technical Services for current fixing and jointing guidance)

Installation is restricted to applicators who hold current FORSPEC accreditation for this system. Internal-only - not suitable for external, below-grade or permanently UV-exposed applications, and not for any transition that will be exposed to open-air UV once finished. Not a wearing surface - it must always sit beneath tiles, screed or a comparable protective finish. Rapid-set or engineered screed products must not be laid directly onto the membrane unless FORSPEC Technical Services has confirmed compatibility. Unbonded screeds must be a minimum of 40 mm thick at any point, reinforced and installed to AS 3958.1, with the mesh laid between screed layers and never directly on the membrane; FORSPEC SCREEDX permits 35 mm at the lowest point, and anything below 35 mm needs written FORSPEC approval. ACTFLEX 302 Adhesive is for internal use only; ACTFLEX 301 ADHESIVE is an approved alternative only in well-ventilated areas, as it is solvent-based. Do not apply either adhesive over any area that will later be heat-welded - welded joints need clean, adhesive-free membrane edges. Apply only at 5-35°C ambient. Underfloor heating cables must never sit directly against the membrane underside. Movement joints and non-standard junctions must be detailed per FORSPEC guidance before covering. Newly poured concrete must be cured a minimum of 28 days, and application constitutes acceptance of the substrate. For lightweight fibre cement sheet flooring or any non-standard substrate, contact FORSPEC Technical Services. The head contractor must make sure other trades know the membrane is in place before any cover goes down. Read the current SDS for the membrane, adhesives, primers and sealants before use.