NBT Diffurtherm

The Timber Frame Diffutherm System is for timber frame buildings externally finished with render. The NBT Diffutherm system uses Pavatex woodfibre boards over the outside of the frame in a continuous layer. The racking board is fitted on the inside of the structure, acting also as both the airtightness and the vapour control layer, in a fully breathable construction. Externally a mineral based thin render system is applied directly to the woodfibre. Internally we recommend a service void between racking board and plasterboard for effective airtightness control and easy service alterations.

Timber Frame Construction

The Timber Frame Diffutherm System can be used with any conventional timber frame design, provided that the racking board is fixed on the inside of the frame rather than the outside. The same limitations apply as to all timber frame applications. The Diffutherm system has good fire rating and is suitable in many situations requiring fire resistance.

System Benefits:

• Full design and site support.
• Excellent thermal performance, with very low thermal bridging, enabling very slim construction for new Part L compliance.
• Alternatively very high thermal shell performance possible in slim and cost effective way.
• Excellent airtightness by design.
• Excellent acoustic insulation.
• Good overheating control.
• Fully breathing construction.
• Full design and site support.
• All system components from one source.
• Tried and tested system, fully certified.

Environmental Performance:

• BREEAM Green Guide rating: A.
• Carbon positive (locks up more than is used) and non toxic.
• Woodfibre Boards are over 95% waste.