Your specification

Below you'll find your specification. If you would like to discuss this with us, please give us a call on 01392 861763.

exterior

roof covering

25mm battens

25mm counter-battens

Ampatex Aero breathable membrane

150mm rafters @ 600mm ccs, fully filled with SteicoFlex 036 flexible wood fibre insulation

80mm Beltermo Ultra wood fibre sarking board

Ampatex Sinco vapour control membrane, taped with Ampacoll INT airtightness tape.

25mm counter-battens

12mm plasterboard

interior

Suggested Details

For newer structures with a breathable roofing membrane over the rafters

Or, for older structures with an existing non-breathable roofing membrane over the rafters. Please note that for these structures you need eaves and ridge ventilation, not just a gap between the insulation and membrane.

Click on the model to view. Full screen icon in the bottom right corner.

If you’d like to learn about how to design with or install wood fibre insulation in this and many other scenarios, please head over to our free online training area at Fibres.

U-Value

0.171 W/m2K

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