Timber frame walls

Insulated external timber frame walls can provide better insulation performance than masonry walls of comparable thickness. Timber frame is also widely recognised as the most environmentally friendly construction method – a construction with extremely low ‘embodied energy’.

Timber frame offers unique advantages to home owners, builders and contractors:

• Reduced construction time

• A wide range of U-values can be achieved depending on the required level of thermal performance

• Excellent thermal efficiency

• Potential for easy future renovation

• Pre-fabrication enhances quality control due to off site manufacture, thereby reducing the risk of on-site workmanship problems

• Light weight requiring reduced footings and foundations compared to masonry construction

A vapour control layer is essential on the ‘warm’ side of the insulation to reduce the risk of condensation forming within the timber frame.

A vapour permeable membrane on the outside of the sheathing board is also necessary to protect the timber frame from water penetration whilst allowing water vapour to escape.

A half hour fire resistance in domestic external walls is required by the Building Regulations. Timber frame walls filled with mineral wool insulation are ideal for meeting this requirement. In most timber frame constructions, cavity barriers must be used to divide up the external cavity in order to reduce the risk of fire spread.

Earthwool FrameTherm Rolls and Slabs are dimensioned to suit 90mm or 140mm studs at standard 600mm centres.

Earthwool FrameTherm Rolls and Slabs are friction fitted between studs at standard centres and are self supporting. Generally, two slabs fully fill the space between sole and head plates for standard floor to ceiling height.

Earthwool FrameTherm Rolls and Slabs are lightweight glass mineral wool products available in a range of thermal conductivities, their manufacture has a very low impact on the environment.

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