Celotex polyisocyanurate pir foam insulation boards are easy to cut and handle.
Roof rafter insulation boards.
Insulation is friction fitted between rafters with the option to underline the rafters with a layer of thermal laminate to further enhance thermal performance.
Depending on the specifics of the roof it may be possible to fully fill the rafter depth or in most cases leave a 25mm or 50mm air gap between the top face of the insulation and the sarking membrane.
Baffles are also called wind baffles venting chutes rafter vents or insulation baffles.
Yes they are big thermal holes.
The later is used in new construction as the interior board serves as an inner wall.
Install underlay above the rafters.
Measure the space between the rafters where the insulation.
Some types of thicker foam board insulation are available but they may need to be special ordered.
Photograph 1 above left.
When they are cut ensure there is a.
Rigid foam board is just above the roof deck or an exterior insulation option.
Your rigid boards will need to be cut to fit the gaps between the rafters.
It typically has 3 variations.
For a ventilated roof fix battens on the inside of the rafters 50mm from the underlay to leave vented air spaces.
Baffles provide a channel for air to flow through certain parts of the attic.
Rigid polyisocyanurate pir foam insulation boards from celotex are among the most thermally efficient commonly available insulation materials on the market.
Foam board insulation is easy to use and is a great diy way to add some insulation.
Again make sure you select the right thickness of the material so you fill as much of the rafter gap as possible.
Using rigid boards as opposed to wool is a much more precise.
But a space needs to be a space or what is the point.
Original roof uninsulated rafter framing with board roof deck.
Yes skylights went in.
It took us many millennia to get out of caves.
For an un ventilated roof construction a vapour open underlay or breather.
Being lightweight they do not impose significant additional loads on existing structures.
Once up at roof level the between rafter boards can be cut accurately to fit the rafter spacings.
Our insulation solutions for warm roofs maximise both space and thermal efficiency whilst also contributing to acoustic performance.
Furring straightens out rafter plane for smooth plaster finish.
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.
Insulating the roof above the rafters is known as warm roof insulation as the rafters are brought into the insulated envelope of the building.