AC50 Acoustic Sealant
This high strength AC50 acoustic sealant is specially formulated for sealing and bonding plasterboard and other insulation boards. It comes in two sizes, 380ml standard and 900ml large. One small tube is sufficient to seal the edges of approximately five 1200mm x 1200mm soundproof panels. You will need a jumbo sealant gun applicator for the 900ml tubes of sealant.
- Strength permanently flexible sealant
- High grab
- Adheres to most surfaces
- Mould resistant
- Non-flammable and fire rated
- Over paintable
- Easy clean up
Areas for Use
Use this high strength sealant and adhesive to form an acoustic barrier by sealing gaps between plasterboard walls, floors and ceilings and in dry lining applications.
It can be used as an adhesive to bond plasterboard to plasterboard, wood and metal studding and direct to block work. It’s also suitable for use when sealing and bonding most other Kraft lined insulation boards.
- Damp or humid conditions will significantly extend the cure time
- Do not attempt to abrade when cured
- Do not over paint until product has fully cured. This will normally be 24 hours but may be 4-5 days in damp, cold or humid conditions
- Do not apply below 5°C
- For overhead boarding applications, always use in conjunction with mechanical fixings
All surfaces must be clean and dust free. All loose or flaking surface coatings, and old sealant and mastic joints, should be removed before application. Highly porous substrates such as new plaster should first be primed with PVA bond diluted 1:4 with water. Surfaces may be slightly damp, but not wet. NOTE: THIS WILL SLOW THE CURE.
This dual action sealant and adhesive is easy to apply yourself. When using a 380ml tube, cut the tip of the cartridge taking care not to damage the thread. Apply nozzle and cut cleanly at an angle of 45°.
For 900ml tubes, you’ll need to fit the cartridge into a jumbo sealant gun. Cut nozzle to required length and puncture inner membrane seal before applying.
Use as a sealant:
Always cut nozzle to a size slightly larger than the gap to be sealed. Apply to gap, slightly overfilling and finish smooth with a caulking tool or filler knife.
Clean up any excess with a damp cloth within 30 minutes of application.
Use as an adhesive for direct bonding to large surfaces:
Cut nozzle to provide a bead of approximately 9-10mm diameter and apply a continuous bead to one surface at 250-350mm centres. Apply board immediately to surface and tamp down. Provide temporary support until cured.
Use as an adhesive for bonding to studding:
Apply a continuous bead to studding and apply board immediately into position. Do not apply more than one board’s width of studding at one time. Provide temporary support until cured.
If you have any questions about using this AC50 Acoustic Sealant and Adhesive in your home soundproofing project, don’t hesitate to contact our team of friendly experts.