How Do You Prevent Thermal Bridging When Installing Insulation Boards?

A thermal bridge is a gap in the insulation layer that allows heat to escape more easily, creating cold spots and reducing overall efficiency. To prevent this when installing insulation boards, it is crucial to: Ensure boards are tightly butted together with no gaps.Use lapped joints where possible (some boards have tongue-and-groove edges).Tape all joints between foil-faced boards with aluminium foil tape to create a continuous air and vapour barrier.Pay special attention to junctions between walls, floors, and the roof, ensuring the insulation layer is continuous.

Which Way Round Should Foil-Faced Insulation Boards Be Installed?

When installing foil-faced insulation boards (like PIR) against an external masonry wall or within a timber frame, it is standard practice to place the unprinted foil facing towards the cavity or masonry wall. The side with the printed branding and technical information should face outwards, into the room, before the final plasterboard layer is added. For some specific applications, manufacturer guidance may vary, so always check the product datasheet.

Can Insulation Boards Be Fixed Over The Top Of Timber Battens?

Yes, insulation boards can be fixed over the top of a timber batten framework. In this method, the battens are first secured to the wall. The insulation boards are then cut to size and fixed directly to the face of the battens. It is crucial to ensure that when joining two boards together, the joint is positioned over the centre of a timber batten to provide solid support for both board edges and subsequent fixings.

What Should I Do With Offcuts Of Insulation Boards During Installation?

To maximise material use and ensure a complete insulated layer, any clean, well-fitting offcuts of insulation board can and should be used to fill any smaller gaps left within the framework, such as around windows or in corners. This helps to create a continuous thermal barrier and reduces waste on site.

Do I Need To Consult A Professional Before Insulating My Walls?

Yes, it is always highly recommended to consult a building professional, architect, or qualified installer before starting any internal wall insulation project. They can help ensure you are using the correct product and method for your specific property type and that you are complying with current Building Regulations. In many cases, approval for the work may also be required, so this should be confirmed before any installation begins.

Insulation Boards | Materials Market

50mm EPS100 Polystyrene Insulation Board 2400mm x 1200mm

Insulation Boards

50mm EPS100 Polystyrene Insulation Board 2400mm x 1200mm

100mm Kingspan Kooltherm K103 Floor Insulation Board 2400mm x 1200mm (3/Pack)

75mm Celotex CW4075 Cavity Wall Insulation Board 1200mm x 450mm (4.32m2/Pack)

100mm Kingspan Kooltherm K108 Cavity Insulation Board 1200mm x 450mm (2.7m2/Pack)

75mm Kingspan Kooltherm K103 Floor Insulation Board 2400mm x 1200mm (4/Pack)

120mm Kingspan Kooltherm K107 Pitched Roof Insulation Board 2400mm x 1200mm (2/Pack)

60mm Kingspan Kooltherm K103 Floor Insulation Board 2400mm x 1200mm (5/Pack)

200mm Celotex XR4200 PIR Insulation Board 2400mm x 1200mm

150mm Kingspan Thermaroof TR27 Flat Roof Insulation Board 1200mm x 1200mm (2.88m2/Pack)

75mm Kingspan Kooltherm K107 Pitched Roof Insulation Board 2400mm x 1200mm (4/Pack)

100mm EPS100 Polystyrene Insulation Board 2400mm x 1200mm

70mm Kingspan Kooltherm K5 External Wall Insulation Board 1200mm x 600mm (4.32m2/Pack)

25mm Kingspan Kooltherm K107 Pitched Roof Insulation Board 2400mm x 1200mm (12/Pack)

115mm Recticel Eurowall+ Full Fill Insulation T&G Board 1200mm x 460mm (4.42m2/Pack)

40mm Kingspan GreenGuard XPS Extruded Polystyrene Insulation 300kpa (7.5m2/Pack)

60mm Kingspan GreenGuard XPS Extruded Polystyrene Insulation 300kpa (5.25m2/Pack)

115mm Celotex Thermaclass Cavity Wall 21 Full Fill Insulation Board T&G 1190mm x 450mm (2.68m2/Pack)

100mm Kingspan Kooltherm K112 Framing Insulation Board 2400mm x 1200mm (3/Pack)

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