SIP Panel Extension Efficiency Information

Our extensions utilise the Kingspan TEK® Building System for the walls, which has environmental sustainability at its core. All of the components for a typical extension, e.g. panels and ancillaries, come from one source. Therefore there are fewer deliveries, less transport congestion, noise and traffic pollution, which reduces a project’s impact on the environment. In addition, a project will create minimal site waste, as kits are designed, cut and palletised in a quality controlled, factory environment.

The insulation layer is not interrupted by repeating stud work, so there is less repeating thermal bridging, yielding better thermal performance. The SIP panels are certified to BES 6001 (Framework Standard for the Responsible Sourcing of Construction Products) as `Very Good’. The insulation core of the panels is manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).

For roofs BJC Joinery use the Guardian Warm Roof system, which is fully tested and approved to all thermal and structural standards. This high performance insulated roof system comprises of a pre-engineered lightweight frame, two layers of rigid insulation board, internal insulated plasterboard, exterior grade plywood and a vapour membrane. Altogether this creates a thermally efficient living space; keeping the warm air out in the summer and preventing the heat from escaping in the winter thus saving the amount of heat energy required to keep the room at an ambient temperature.

Complete Construction Efficiency

Finished constructions produce a superior U-value of just 0.16 W/m2.K with a total wall thickness of 275.5 mm. To achieve an equivalent U-value using traditional methods of construction the wall would have to be 453 mm thick. Thermographic imagery on completed roofs has demonstrated 100% thermal reliability and continuous insulation, with:

• No cold bridging

• No condensation risk

• No interstitial moisture risk