Description

Intumescent Acrylic and Acoustic Mastic

Intumescent acrylic and acoustic mastic, a halon-free, intumescent mastic with excellent adhesion to all materials. Available in standard colours brown, grey, black, and white. Additionally, other colours are available to order. For fire-stopping gaps from 1mm up to 60mm wide. Alternatively, for wider gaps, fit Product 40 – Fireproof Sponge into the gap first. After application, a skin forms that allows painting, but the material stays permanently flexible. It is a low-pressure material with good cooling ability for metals and expands up to five times its volume in a fire. Ideal for use horizontally or vertically around exit door frames, cable trays, ducting, and aslo partitions.

Intumescent acrylic and acoustic mastic is a powerful, fire-resistant filler and sealant. Therefore providing a permanent flexible seal against fire, smoke, and toxic fumes. Ideal for use either horizontally or vertically around door frames, cable trays, ducting, and partitions. Additionally, a new acoustic acrylic mastic version is available for non-fire-rated areas.

Available in 310ml tubes.

Tested to BS476 Parts 20, 21 & 22 (1987), achieving integrity ratings of up to 249. Additionally, tested to European Standard EN1363-1 (2000), achieving 126 minutes protection.

We provide a varied selection of fireproof adhesives, fillers and sealants compatible with a range of materials. Browse our full range of Adhesives, Fillers and Sealants products online.

Advantages

– For use as a seal between door frames and walls, around edges of partitions, or in voids around services such as pipes- Can be used in conjunction with Envirograf Intumescent Slabs (Products 4 and 5), Blocks (Products 2 and 3) and Expansion Joints (Products 39 and 40) to provide a robust penetration seal
– Can be painted over for decorative purposes
– Standard mastic tube can be used with any normal skeleton gun

Application Instructions

A minimum of 12mm depth is required around ceiling, floor and wall joints in computer
areas. This prevents Halon gas escaping.
All surfaces should be sound and clean. Oily surfaces should be wiped with white
spirit and then dried.
Dry, dusty brickwork must be moistened prior to application of Envirograf
Intumescent Mastic, using a normal skeleton gun. Extrude the mastic firmly against
the sides of the joint, ensuring firm contact.
Can be painted over only after surface skin has formed.

• Metric units
• US units

Order References / Sizes