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Batt & Mastic

FSI Pyrocoustic® Intumescent Mastic (Box of 25)
£45.60 – £55.09 Select options This product has multiple variants. The options may be chosen on the product page
Intumescent & Acrylic Sealant – FAS
£74.98 Select options This product has multiple variants. The options may be chosen on the product page
Envirograf Intumescent Acrylic and Acoustic Mastic (Box of 25)
£77.75 – £101.00 Select options This product has multiple variants. The options may be chosen on the product page
QuelStop Acrylic Mastic by Quelfire
£61.94 inc. VAT: £74.33 Add to cart
Protecta FR ACRYLIC Fire Rated Mastic 310ml Box 25 tubes
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FSI Pyrolastic® Silicone Fire Resistant Sealant (Box of 25)
£164.75 – £214.78 Select options This product has multiple variants. The options may be chosen on the product page
Protecta FR ASF
£42.80 – £48.58 Select options This product has multiple variants. The options may be chosen on the product page
Quelstop HPE Sealant by Quelfire – QHPE
£184.68 inc. VAT: £221.62 Add to cart
FSI Pyropro HPE Fire Resistant Sealant (Box of 25)
£165.85 inc. VAT: £199.02 Add to cart
Protecta FR Coating Fire Rated for Boards 8L
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TBA FireFly Ablative Coating
£34.13 inc. VAT: £40.96 Add to cart
NulliFire FS702 Acrylic sealant
£30.14 – £52.26 Select options This product has multiple variants. The options may be chosen on the product page
TBA-Roof Cavity Closer – CS 1200 x 300 – (made to order)
£63.43 inc. VAT: £76.12 Add to cart
TBA-Roof Cavity Closer (chamfered – made to order)
£74.88 Select options This product has multiple variants. The options may be chosen on the product page
TBA-Roof Cavity Closer
£31.54 – £89.18 Select options This product has multiple variants. The options may be chosen on the product page
TBA FireFly Intumescent Acrylic (White)
£3.08 – £5.99 Select options This product has multiple variants. The options may be chosen on the product page
TBA FireFly High Expansion Graphite Sealant (Grey)
£7.01 inc. VAT: £8.41 Add to cart
TBA FireFly – FB180 – Ablative Batt
£40.19 – £47.73 Select options This product has multiple variants. The options may be chosen on the product page
Nullifire FS709 Intumescent Sealant
£104.13 inc. VAT: £124.96 Add to cart
Nullifire FB750 Intubatt
£22.38 – £27.97 Select options This product has multiple variants. The options may be chosen on the product page

Batt & Mastic

Fire batts and mastic are probably the most used products to firestop a wide variety of situations.

Fire Batts are boards, usually made from a stone wool and coated in ablative coating, which are designed to prevent the passage of fire and smoke through large openings in walls and floors.

Intumescent mastic can be used around joints and gaps to create a fire resistant seal.

These are both important in compartmentalisation.

There are many different manufacturers of fire batt and mastic. It is important to be consistant, using the same manufacturer for all of the products in a given system. For example, customers should never use Protecta batts with a general purpose intumescent mastic. The correct Protecta sealant must be used in these scenarios, whether that is FR Acrylic, FR ASF, FR Graphite, or FR IPT, etc.

Fire batts usually are available in 50mm and 60mm thicknesses. The correct thickness should be chosen depending on the application. Always follow the manufacturer’s instructions on the exact detail you’re trying to firestop.

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