ACTFLEX 1300R Butyl Sheet 1.4m x 20m

• Internal wet areas - bathrooms, showers, ensuites and laundries, installed per AS 3740:2021
• External above-ground areas - balconies, terraces, podiums and roofs beneath approved finishes, installed per AS 4654.2-2012
• Below-ground structures and retaining walls, positive side
• Beneath tiling, applied directly to the upper fabric face
• Beneath screeds and mortar beds
• Beneath timber decking and paver pedestal systems
• Planter boxes and landscaped areas beneath protection and drainage layers
• Hybrid systems in combination with the FORSPEC liquid membrane range
• Remedial and maintenance waterproofing over approved, prepared substrates

Surface suitability

• Concrete (cured minimum 7 days, structurally sound, clean and dry; defects between 2 mm and 30 mm repaired with FORBUILD 100 or FORCRETE 100, spalling concrete treated with PROBOND 1100 or the appropriate FORSPEC concrete repair product)
• Masonry and blockwork (sound, joints struck flush and made good)
• Sand and cement screeds (cured, sound and non-friable)
• Plywood (structurally fixed, rigid and dimensionally stable)
• Fibre cement sheet (wet-area grade, fixed and jointed to the manufacturer's specification)
• Selected PVC substrates (confirm compatibility with FORSPEC Technical Services before proceeding; adhesion test area required)
• Moisture-affected or curing concrete (prime with two coats of ACTFLEX EP250 per its TDS, allowing the specified cure between coats, before adhesive application)
• Negative-side conditions, heavily jointed or moving substrates (contact your FORSPEC representative before proceeding)

Adhesive applied only - not mechanically fastened and not loose laid; ACTFLEX 301 ADHESIVE must bond the sheet to the substrate across its whole area. Weld the laps only. Never weld the sheet to the substrate, and never apply adhesive into a lap that will be welded; welded joints need clean, adhesive-free mating faces. Where ACTFLEX EP250 is used it must be fully cured before ACTFLEX 301 ADHESIVE is applied, or the adhesive solvents will attack the uncured epoxy film; this is not recoverable and the primer must be removed and reinstated. Substrates must be dry at the time of adhesive application - a contact adhesive will not develop bond to a damp surface. Remove all sharp protrusions, aggregate and debris that could puncture the membrane once bonded. Newly poured concrete must be cured a minimum of 7 days before installation. PVC panels, negative-side conditions and heavily jointed or moving substrates need confirmation from a FORSPEC representative before proceeding. Verification testing to AS/NZS 4858 and AS 4654.1 is in progress; where a project specification requires a certified classification to be cited, confirm the current status with FORSPEC Technical Services. Not a wearing surface - always cover with tiles, screed, decking, pavers or an approved finish. UV stability supports open-air exposure during construction only and is not a substitute for the specified finish. Do not stretch the sheet during installation; a stretched sheet will recover and lift at laps and terminations. An unwelded, cold or contaminated lap is a defect, so every seam must be probe-tested. Do not apply below 5°C or above 35°C ambient. The adhesive is solvent based - provide ventilation and control ignition sources per the ACTFLEX 301 ADHESIVE SDS. No AS/NZS 4020 certification is held; potable-water contact requires written confirmation from FORSPEC Technical Services. Never place fill, growing medium or loose coverings directly on the membrane, and never place or drag pedestal bases directly on the unprotected membrane. Do not use solvent cleaners or abrasive pads on the fabric face.