Insulating and rendering a timber framed construction

Timber frame methods of building offer many benefits in the way of fast-track and off-site construction. However, although timber is treated, it's vulnerable to rot and needs to be kept in a warm, dry environment.

Our guide takes you through the steps to ensure these problems are prevented when insulating a timber framed house.

Common issues and queries you can face

Bad construction may lead to rot

Bad construction may lead to rot

Even treated timber needs to be kept in a dry environment. Poor detailing and bad construction may lead to water penetration of the facade, which if allowed to reach the timber frame, may result in rot and at worst, structural failure.

Interstitial condensation

Interstitial condensation

Interstitial condensation may form within the structure when insulation is not placed in the correct position. Timber constructions often rely on a vapour barrier on the warm internal face.

No benefit by insulating outside the cavity

No benefit by insulating outside the cavity

The NHBC recommend and require that a ventilated and drained cavity be installed between the render system and the timber frame. The ventilation helps control the moisture levels of the timber. 

Insulate and finish with weberend MT

Insulate the frame within the stud, provide a minimium 40mm cavity (20mm if backed by breather membrane or similar). Fix suitable sheathing board spaced off to create drained/ventilated cavity and finish with weberend MT.

  1. Insulate

    Fix insulation within the stud.

  2. Ventilate

    Provide suitable sheathing board spaced off the insulation/stud to maintain the drained and ventilated cavity.

  3. Finish

    Finish with weberend MT system with choice of finishes.

    Full specification details for panel based systems are available from our technical team.

External Wall Insulation (EWI)

EWI offers additional insulation for a timber framed house when combined with internal insulation. Find out more about EWI here.

Case Study - Tregenna Estate

Take a look at our Tregenna Estate Case Study where weberend MT was used on a number of timber framed houses.

eHome2 - Contributing to the future of housebuilding

Our lightweight, flexible weberend MT system was used on the eHome2 project within the Energy House 2.0 facility at the University of Salford. Read more about the future of housebuilding and this exciting experiment here.

Contact us

If you have any questions or would like assistance, please feel free to get in touch with us.

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