SIP Panel Extensions
Faster, Stronger, and More Energy Efficient

Expand Your Home the Smart Way with Structural Insulated Panels (SIPs)
Why Choose SIP Panels for Extensions?
Extending your home should be quick, cost-effective, and energy-efficient, that’s where Structural Insulated Panels (SIPs) excel. Whether you need more living space, a larger kitchen, or an extra bedroom, SIPs provide a faster and greener way to build your extension compared to traditional methods.
Key Benefits of SIP Extensions:
- Faster Build Times – SIP extensions can be completed up to 60% quicker than traditional brick-and-block construction.
- Superior Insulation – Excellent thermal performance means lower heating bills and a more comfortable home year-round.
- Cost-Effective – Less labour, reduced waste, and lower energy costs in the long term.
- Minimal Disruption – Quick assembly means less noise, dust, and inconvenience for your household.
- Strong & Durable – High structural integrity, suitable for all types of home extensions.
- Eco-Friendly – Lower carbon footprint with sustainable, precision-cut materials.


SIP panels are versatile and can be used for various extension types, including:
- Rear Extensions – Expand your living space with a modern open-plan kitchen or dining area.
- Side Extensions – Make use of unused space at the side of your property for extra rooms or storage.
- Wraparound Extensions – Combine a rear and side extension for maximum space efficiency.
- Loft Conversions – Convert your loft into a warm, well-insulated extra bedroom or office.
- Double-Storey Extensions – Add more space upstairs and downstairs with a lightweight, strong SIP solution.


SIP panels are lightweight yet incredibly strong, making them ideal for both single-storey and multi-storey extensions.
- Rear Extensions – Expand your living space with a modern open-plan kitchen or dining area.
- Side Extensions – Make use of unused space at the side of your property for extra rooms or storage.
- Wraparound Extensions – Combine a rear and side extension for maximum space efficiency.
- Loft Conversions – Convert your loft into a warm, well-insulated extra bedroom or office.
- Double-Storey Extensions – Add more space upstairs and downstairs with a lightweight, strong SIP solution.


Cost Comparison:
Traditional vs SIP Extensions
Feature | SIP Panel Extensions | Traditional Brick & Block Extensions |
---|---|---|
Build Speed | Up to 60% faster | Slow due to weather delays, drying times, and complex labour |
Energy Efficiency | Superior insulation, lower energy bills | Requires extra insulation layers, increasing costs |
Labour Costs | Lower – Fewer trades needed | Higher – Requires multiple skilled tradespeople |
Material Waste | Minimal – Factory precision-cut panels | High waste from bricks, mortar, and on-site cutting |
Overall Cost | More cost-effective in the long term | Higher due to extended build time and extra materials |
SIP panels allow you to save both time and money while achieving a high-quality, energy-efficient extension.
Project Gallery: SIP Extensions in Progress & Completed Builds
Get a Free Consultation Today!

Text here
Project Name

Text here
Project Name
What Our Customers Say
Our SIP extension was built in half the time of a traditional build, and we’ve noticed a huge difference in energy efficiency. Highly recommended!.
Sarah W
Building with SIPs was the best decision we made for our new home. It was fast, cost-effective, and so much warmer than a standard house!
James & Emma T
REDUCE.
CARBON.
BUILD.
Address
The Office, 37 Rough Rew,
Dorking RH4 2PA
Phone
(+44) 330 330 9264
(+44) 7808 854614
tom@reducecarbonbuild.co.uk


Copyright © 2025 Reduce Carbon Build. All Rights Reserved.