• Reduce sound transmission at the perimeter of wall systems or around electrical box cutouts
  • Surface dries to a tough film
  • Sealant remains flexible and stays pliable for up to 5 times longer than alternative brands
  • No residual run-off and paintable (dries white)
  • Non-staining, and meets ASTM E-84 standards for flame retardancy
  • StopGap™ will achieve a Sound Transmission Class (STC) of 53 when applying it in accordance with ASTM C-919 “Standard Practice for use of Sealants in Acoustical Applications”
  • StopGap™ should be applied as two beads of sealant at the top, bottom and all perimeter edges
  • Coverage per 28 oz. cartridge is approximately ~32 linear ft. with a 3/8 inch bead applied
Shipping Info

Derringers has two options for your product delivery. We offer FREE Shipping for orders over $100 (except bulky items requiring specialist delivery) to anywhere in Australia, but if you need your gear urgently, then we also offer an Express Delivery service. If you would like to collect this item and save yourself the freight costs please call (08) 8371 1884.

Returns Policy

Within 30 days of receiving your order you may return it to us (providing it is unopened and in perfect condition) for a refund, exchange or credit. Items that have been opened (even if unused) may be accepted back at our discretion for store credit or exchange only. Some products are excuded. Click here to read our full returns policy.