A modern roof insulation system must do more than just protect building occupants from cold. It must create a comfortable and healthy environment in all possible combinations of external and internal conditions and control the effects of external heat, cold, noise and internal moisture generation.

Externally Fitted Pitched Roof Systems – by Unity Lime

 

Keep the building warmer for longer in cold weather: Low thermal conductivity and high vapour permeability provide high thermal insulation with no risk of interstitial condensation. Vapour barriers are unnecessary. Wood fibre boards reduce the effect of thermal bridging and the interlocking board design easily achieves good windtightness, so increasing thermal performance. Energy use for heating is significantly reduced leading to lower CO2 emissions and running costs.

Keep the building quieter: The high mass and the fibrous texture of Pavatex wood fibre boards gives excellent acoustic performance to buildings.

Keep the building cooler in hot weather: The unique combination of high density, high specific heat capacity and low thermal conductivity gives NBT Pitched Roof solutions the effect of thermal mass that would normally be associated with green roofs. Compared to conventional sarking material the risk of condensation behind it during cold nights is minimized as the boards will store the day’s heat.

Keep the building dry and breathable: Pavatex wood fibre boards are very vapour permeable and hygroscopic. This allows them to disperse accumulating short term moisture and protect vulnerable elements of the building fabric, with no reduction in the performance of the boards themselves. The boards allow moisture from within the structure to pass easily to the outside. This provides a safeguard against high moisture content. This is vital for the long-term health of the building fabric, and is completely overlooked by most conventional insulation systems.

Externally Fitted Pitched Roof

 

Warm Roof - BBA Approved

A high performance, breathable roof with excellent overtime heating protection 

Warm Roof - Exposed Rafters

The perfect option to leave the internal rafters of the building exposed. 

Hybrid Roof - Above & Below

A robust roof insulation system that offers all round performance in terms of both hot and cold temperatures as well as being breathable and offering great sustainability credentials. 

Cold Roof - Between & Below

This pitched roof system is designed for situations where it is not possible to install Isolair Multi above the rafters. 

Retofit Roof - Finishes Retained

This option allows for the internal finishes to be left in place whilst still maintaining an airtight roof. 

Cross-Laminated Timber

Our traditional pitched roof system adapted for a modern cross laminated timber (CLT) Substrate.