• Acoustic sealant and adhesive that reduces noise transmission through partitions
• Flexible joint filler with good adhesion to most common building materials
• Seals the perimeter of drywall partitioning to cut sound leakage
• Also fixes plasterboard into partition systems to reduce vibration and movement
• Suitable for low-movement cracks, joints and interior skirting
• Single cartridge or trade box of 12

First, make sure the partition framework and board edges are clean and dry. AS900 works as both a sealant and an adhesive bead.

Next, run a continuous bead around the perimeter of the partition (floor, head and abutments) before fixing the boards, so the seal is sandwiched and airtight. This is what blocks the sound path.

Then fit the plasterboard and fix as normal. You can also gun a bead onto studs to bed the board and reduce rattle and vibration.

Finally, tool any visible joints before the skin forms. AS900 is for interior use; for fire-rated linear joints use our FS4 Fireshield intumescent sealant instead.

• Product code: BDAS900
• Type: acrylic acoustic sealant and adhesive
• Colour: white
• Size: EU9 cartridge
• Use: interior drywall partitioning, low-movement joints
• Function: reduces airborne noise transmission and board vibration
• Pack sizes: single cartridge or trade box of 12

How does an acoustic sealant reduce noise?

It seals the small gaps around a partition's perimeter where sound leaks through. A continuous airtight bead at the floor, head and edges stops that flanking path, which improves the wall's sound insulation.

Where exactly do I apply it?

Run it around the perimeter of the partition before the boards go on, so it is compressed between the framework and the board. You can also bed boards onto studs with it.

Is it the same as a fire sealant?

No. AS900 is for acoustic sealing. For fire-rated or intumescent joints, use our FS4 Fireshield acoustic intumescent sealant.

Can it be painted?

Yes, as an acrylic-based sealant it can be overpainted once skinned, which suits visible interior joints.

Is it for interior or exterior use?

Interior use, typically within drywall and partition systems.

Single or box of 12?

Choose a single cartridge for a small job, or the trade box of 12 for a full partitioning run.