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Intumescent Mastic

Passive Fire Products range of Adhesives and Sealants.

We offer a large range of fire adhesives/sealants/foams/mastics and compounds for

sealing up gaps around pipes, cables and services in fire barriers, preventing spread of smoke and fire.

They can be used in many application our intumescent mastic offers many benefits.

Fire rated in both horizontal & vertical joints

No priming required for most construction substrates 

Joint movement capability of 7.5% • For use in joints up to 50 mm wide

Excellent slump resistance

Easy to apply and tool off, Paintable, Excellent adhesion to most common building substrates,Reduces sound transmission in joints

Our Mortar range is a dry white powder which consists of inorganic components and perlite. When water is added, a hardened thermal fire sealing compound for sealing through-penetrations that penetrate fire classified walls and floors. 

Leading manufacturers and intumescent product ranges, include FSI, Nullifire, Protecta, Astroflame.

For clarification on minimum requirements before buying one of our fire-stopping products, please review the information. A written specification should be obtained from our Technical Department for your project prior to use to ensure the product will be suitable.

If there is a product you cannot find, please contact our Technical and Sales Support Team on 0333 043 0018

Envirograf Intumescent Acrylic & Acoustic Mastic

Envirograf range of halon-free, intumescent acrylic and acoustic mastics are available in standard c...

£3.05+VAT
QuelStop Intumescent Acoustic Acrylic Sealant 310ml tube

Up to 4 hour fire rating (EI240)Suitable for use in flexible walls, rigid walls and floorsSuitable f...

RRP £2.86
£2.20+VAT
Firetherm Intumastic

Firetherm IntumasticSuitable for dry internal use only.Joint widths 0 to 35 mm linear; 30 to 150 mm ...

£51.75+VAT
FSI Pyrocoustic Intumescent SPEARS Approved 310ml

Pyrocoustic® Sealant is a water based acrylic sealant used to reinstate the fire resistance of wall...

£41.18+VAT
Protecta FR Acrylic

Protecta FR Acrylic is the top selling fire rated mastic in our selection of products. The reason is...

£39.96+VAT
Protecta FR ASF Mastic

Protecta® FR ASF is designed to prevent the spread of fire, smoke and gases through openings in fir...

£29.64+VAT
Protecta FR IPT

FR IPT is a high performance fire rated sealant, professional quality, one part ready to use sealant...

£83.40+VAT
Nullifire FS709 HP Intumescent Sealant

FS709 is designed to close off gaps and penetrations in compartment walls and floors, to provide up ...

£7.23+VAT
Nullifire FS702 Intumastic Fire Resistant Acrylic Sealant

FS702 is suitable for a variety of applications:Static & movement linear joints (masonry/flexible wa...

£27.24+VAT
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