Thermoguard Intumescent Mastic is an easy to apply, intumescent sealant that provides a 5 hour fire barrier and also excellent sound reduction properties. With permanently flexible and excellent slump resistance, it is ideal for sealing gaps around fire doors, window frames. Also good for sealing joints, voids and irregular holes in fire rated structures.
Thermoguard Intumescent Mastic is a one part intumescent acrylic mastic, the sealant forms a char, preventing the passage of fire and smoke, when exposed to the heat of a fire. Maintains fire integrity when sealing around pipes and cables that penetrate walls. Suitable for flexible walls, rigid walls & floors.
- Block Wall, Concrete, Masonry and Plasterboard Partition
- In Linear Joints up to 50mm wide tested in large service openings up to 490 x 150mm
- For sealing of linear joints in concrete floors, masonry walls and plasterboard including head of wall details
- And around metallic pipes, cable trays, cable bunches, small, medium and large cabl
The sealant is gunned or trowelled into the aperture in or between the separating elements/elements to a specific depth utilising various backing materials.
A polyethylene backing rod can be utilised as a depth gauge. Reaction to Fire classification ‘F’
The Intended use of system Intu Mastic is to reinstate the fire resistance performance of gaps in and joints between rigid and flexible wall constructions, gaps in and joints between rigid floor constructions.
The specific elements of construction that the system Intu Mastic may be used to provide a gap or joints seal in, are as follows:
The floor must have a minimum thickness of 150mm and comprise concrete, aerated concrete or masonry, with a minimum density of 650kg/m3.
The wall must have a minimum thickness of 100mm and comprise concrete, aerated or masonry, with a minimum density of 650kg/m3.
The wall must have a minimum thickness of 100mm and comprise timber or steel studs lined on both faces with minimum 2 layers of 12.5mm thick, ‘Type F’ Gypsum boards according to EN 520. In timber stud walls, no part of the penetration shall be closer than 100mm to a stud, the cavity must be closed between the penetration seal and the stud and minimum 100mm of insulation of class A1 or A2 according to EN 13501-1, is provided within the cavity between the penetration seal and the stud.
Intu Mastic is required to seal all joints and junctions during the sealing process of Batt. Coated Batt are 50mm thick and supplied in overall dimensions 1200mm x 600mm with a density 140kg/m3 and is subject to a separate ETA referenced 14-0099. The Supporting construction must be classified in accordance with EN 13501-2 for the required fire resistance period.
The system Intu Mastic may be used to provide a linear joint or gap seal with specific supporting constructions
and substrates and as a penetration seal.
The maximum permitted joint/gap width for system Intu Mastic is 50mm. The maximum movement capability of system Intu Mastic is ≤ 7.5%
Intu Mastic has been tested in accordance with EOTA Technical Report – TR024 – Edition November 2006, for the type Z1, use category specific in ETAG 026-3 (used as European Assessment Document, EAD). The results of the tests have demonstrated suitability for Penetration Seals and Linear Gap Joints.
Type Z : Intended for use In internal conditions with humidity equal to or higher than 85% RH excluding temperatures below 0°C, without exposure to rain or UV.