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Intumescent Expansion Joint Seals Linear Gap Seals linear joint seal Firefoam flame retardant polyurethane foam coated sealing a range of gaps sizes
Intumescent Expansion Joint Seals Linear Gap Seals linear joint seal Firefoam flame retardant polyurethane foam coated sealing a range of gaps sizes Intumescent Expansion Joint Seals Linear Gap Seals linear joint seal Firefoam flame retardant polyurethane foam coated sealing a range of gaps sizes Intumescent Expansion Joint Seals Linear Gap Seals linear joint seal Firefoam flame retardant polyurethane foam coated sealing a range of gaps sizes Intumescent Expansion Joint Seals Linear Gap Seals linear joint seal Firefoam flame retardant polyurethane foam coated sealing a range of gaps sizes Intumescent Expansion Joint Seals Linear Gap Seals linear joint seal Firefoam flame retardant polyurethane foam coated sealing a range of gaps sizes

Intumescent Expansion Joint Seals Linear Gap Seals linear joint seal Firefoam flame retardant polyurethane foam coated sealing a range of gaps sizes

Item No.: Linear Gap Seals
Intumescent Expansion Joint Seals Linear Gap Seals  linear joint seal  Firefoam flame retardant polyurethane foam coated sealing a range of gaps sizes in building structures To reinstate fire resistance through walls and floors -linear seals.flexible, wat
Product parameters
Intumescent Seal: Intumescent Expansion Joint Seals Linear Gap Seals linear joint seal Firefoam flame retardant poly
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Description
Description

Husu Linear Gap Seal is an intumescent thermoplastic strip filled with fame retardants and binders. It is a preformed linear joint seal comprising one or more layers of 10mm or 25mm flame retardant polyurethane foam coated on both sides with Husu intumescent material. These layers are combined to produce a product suitable for sealing a range of gaps sizes in building structures. lt provides a high-performance volume expansion and pressure seal, situated in an elastomeric foam which allows for high movement. Husu Gap Seal is designed to reinstate the fire resistance of wall cavities and floor constructions as a linear gap or expansion joint seal. They can be used in Rigid walls and Floors. lt is available in a range of thicknesses and widths.
 
Many buildings incorporate linear gaps in their structural design which need to be protected in the event of fire to maintain the building's fire resistance integrity. The flexible open cell foam structure allows its to compress by approximately 50% thereby enabling it to take the shape of the building joint it is protecting. At approximately 180 ℃ the installed Husu Linear Gap Seal begins to expand During this expansion the flame retardant foam degrades and is replaced by the expanding intumescent graphite thus providing fire protection to the building joint.

Application

The table below provides a guide to the dimensions for range of building joint widths and fire resistance requirements. Allow a minimum compression of 15% to cater for ambient temperature movement changes in the building joint.
 
Fire Resistance       
Gap Width Depth of Firefoam Fill Required
1 hr 1 1/2 hrs 2 hrs 3 hrs 4 hrs
10 25 25 25 35 40
20 25 25 30 40 50
30 25 25 30 40 50
40 30 30 35 45 55
50 35 35 45 60 75
60 35 35 45 65 90
70 40 40 50 75 105
80 40 40 50 85 105
90 45 45 55 85 105
100 50 50 60 85 105
Linear Dimensions in mm

Technical Properties
 
Material Intumescent thermoplastic filled
with flame retardants and binders
Finish/Colour Black
Density 75kg/m3
Expansion Ratio 1:20 times
Seal Length 1000mm
Movement Capability +/-25%
Width 10mm to 100mm i.e. to suit
 gap size
Depth 25mm to 105mm i.e. to meet
fire resistance requirements
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