Unsupported browser

For a better experience please update your browser to its latest version.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more


  • Comment

Rafterloc is an easy and robust way to insulate pitched roofs

For further enquiries please click here

Xtratherm has launched a new product for insulating pitched roofs that provides a robust and userfriendly way to improve the thermal performance of a building.

Rafterloc is a polyisocyanurate (PIR) foam that is installed concertina style between rafters on the slope of the roof. The system features a slotting mechanism that allows the boards to lock between the rafters, ensuring a tight fit.

Rafterloc is available in 360 and 565mm widths and 50 and 100mm thicknesses. Each panel has a width variation of 20 - 30mm to allow a tight fit between the rafters.

Rafterloc therefore avoids most problems with discrepancies in timber widths and spacings that can result from standard-size insulated board.

PIR, used in the manufacture of Rafterloc, has a closed-cell rigid foam construction that offers excellent insulation properties. This allows PIR to achieve one of the lowest Lambda Values of any insulation material and therefore energy efficient roof systems can be achieved with the minimum of thicknesses – a single layer of Rafterloc may be sufficient. However for buildings that require even better U-values Rafterloc is recommended to be used in combination with Xtratherm Pitched Roof Board Thin-R below the rafter, which also reduces thermal bridging.

  • Comment

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions.

Links may be included in your comments but HTML is not permitted.

Related Jobs

AJ Jobs