SIP Panel Extensions
A Structural Insulated Panel (SIP) is made from a sandwich of two layers of stressed skin and one layer of insulation. The stressed skin layers make it exceptionally strong, whilst producing thinner overall wall thicknesses than other forms of construction. With no need for cavity or internal insulation, structural insulated panels can provide a very fast way of constructing very efficient walls with u-values as low as 0.15, without additional insulation.
SIPs are a very flexible product and can be used with any external cladding, be it brick, render, weatherboarding or metal cladding. Equally they can be roofed with slates, tiles or metal roofing. Internally they can be simply finished with plasterboard and a skim coating (with service cavities where needed) meaning that wet trades are kept to a minimum, speeding up build times even further. They are suitable for new builds and home extensions as well as being ideal in-fill panels between other structures like steel or oak frames
SIP Panel Extensions
A Tried & Tested Solution
SIP Panel Extensions were first developed in America in the 1930’s and have been widely-used in the UK since the 1980’s. They have a proven track record of performance and testing, and have a C.A.T.G. SIP Mark Scheme. The Building Research Establishment, an independent testing body, have produced an Information Paper (IP 13/04) on structural insulated panels and have conducted testing on SIPs on behalf of the Government and insurers.
See It For Yourself!
Watch our timelapse video review
Watch the video below of a how the Guardian Warm Roof and Kingspan Tek-Panel products are used to construct a single storey extension within just 3 weeks from start to finish.
Peace Of Mind
With The Consumer Protection Association.
We provide a 10 year guarantee on every SIP panel extension that we install. Through Consumer Protection Association we also provide a 10 year insurance backed guarantee.
Ordering From Windows By Design
Professional fitting is crucial
We supply and install SIP Panel extensions throughout the South West. All of our engineers are approved to install the Guardian Warm Roof system and Windows By Design is also approved by Guardian to install their specialist panels.
Guardian™ Roof Key Information
Full Building Control For your peace of mind
Beautiful FinishesTo compliment your home
Energy EfficientSaving you money
Fast InstallationFor your convenience
Interior / Extras
Start by choosing the room you want to extend
Choose your interior finishes and any extras
Please enter dimensions for extension
Free Extension Quote
Simply fill in your details and we’ll be in touch