Roof Rafter Insulation Boards

Rigid polyisocyanurate pir foam insulation boards from celotex are among the most thermally efficient commonly available insulation materials on the market.

Roof rafter insulation boards.

Our insulation solutions for warm roofs maximise both space and thermal efficiency whilst also contributing to acoustic performance. The later is used in new construction as the interior board serves as an inner wall. Furring straightens out rafter plane for smooth plaster finish. Some types of thicker foam board insulation are available but they may need to be special ordered.

Your rigid boards will need to be cut to fit the gaps between the rafters. Celotex polyisocyanurate pir foam insulation boards are easy to cut and handle. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches. When they are cut ensure there is a.

It typically has 3 variations. Yes they are big thermal holes. It took us many millennia to get out of caves. Again make sure you select the right thickness of the material so you fill as much of the rafter gap as possible.

Photograph 1 above left. Insulating the roof above the rafters is known as warm roof insulation as the rafters are brought into the insulated envelope of the building. Yes skylights went in. Using rigid boards as opposed to wool is a much more precise.

Rigid foam board is just above the roof deck or an exterior insulation option. Insulation is friction fitted between rafters with the option to underline the rafters with a layer of thermal laminate to further enhance thermal performance. Install underlay above the rafters. For a ventilated roof fix battens on the inside of the rafters 50mm from the underlay to leave vented air spaces.

Measure the space between the rafters where the insulation. This over rafter insulation method also reduces thermal bridging giving an airtight continuous layer of high performance insulation and results in a well insulated attic space. Baffles provide a channel for air to flow through certain parts of the attic. Baffles are also called wind baffles venting chutes rafter vents or insulation baffles.

But a space needs to be a space or what is the point. Foam board insulation is easy to use and is a great diy way to add some insulation. Typically made from polyvinyl. For an un ventilated roof construction a vapour open underlay or breather.

Once up at roof level the between rafter boards can be cut accurately to fit the rafter spacings. Being lightweight they do not impose significant additional loads on existing structures.