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SIP Home Extensions – Single Storey

Need more space in your home. Maybe you find yourself working more frequently from home and need a dedicated office space. A SIP home extension could be the perfect solution. Less disruption, more efficient and lots less time to build?
Unlike traditional construction methods that rely on bricks and blocks or a conventional timber frame, SIP (Structurally Insulated Panel) Extensions provide both structure and insulation. SIP panels consist of an insulating polystyrene core sandwiched between two structural facings and they can be used to create fast-track, highly energy-efficient extensions.

Your extension will be built quicker, will be cost-effective and less labour intensive with less disruption to your life. SIPs are revolutionising the way you think about extending your home.

SIP Construction 

Constructed under controlled conditions at our factory, our SIP Panel Extensions have a high strength to weight ratio allowing large sections of your extension to be fitted at once, speeding up the time required on site. The Structurally Insulated Panels (SIPs) are typically 1220mm wide and can be as long as 5.1 metres in length to suit each individual project. These are Structurally Insulated Panels (SIPs) connected with a unique jointing system for walls and roofs. SIPs are fabricated using timber from sustainable sources. SIPs constructions use less timber than typical timber frames and are one of the most economical and eco-friendly forms of construction.

The Versatility of a SIP Extension

SIPs Home Extensions, through their strength and ease of connection, offer more versatility than other construction materials, allowing possibilities beyond the conventional; such as sloping roof panels creating an open space that when utilised, properly maximises any extension building.

You can also choose the exterior look you want. Brick slips tend to me the most used, but cedral cladding is also very popular and there is a selection of colours and styles to choose from. Or if you prefer to render the outside that again can be painted in a range of colours.

So, what are you waiting for? Let PCL Building Products build your Home Extension with Structurally Insulated Panels (SIPs)…..

Looking for a tiled roof conservatory instead? See our SupaLite Roofs

Watch Our Video to See How It’s Done!

We Can Easily Transform Your Existing Conservatory Into A SIPs Extension With Minimum Fuss

“So Good, Next Door Got Theirs Done Too!”

before sips extension
after sips extension

How We Do It

sip construction

Day one, the ground is made good, prepared and the Sole Plates are laid.

sip panels

SIP panels are erected. These comprise of 2 layers of oriented strand board (OSB) with a core of premium carbon treated expanded polystyrene which is sandwiched in between and provides the insulation.

sip frames

The roof frames are installed and a waterproof membrane is then encased around the building which keeps your extension watertight.

sip extension boards

Any windows are typically installed at this point. The roof boards are fitted and waterproofed and the external structure is fitted with Forma Boards ready for the Brick Slips to be installed.

sip extension tiles

The roof is completed with your choice of tiles. The installation of the Brick Slips now begins. We have a wide range of finishing options available for your extension so we’re confident we can closely match your home.

sip house

The installation of the Brick Slips is completed and this is then pointed to give it both the look and feel of a brick build. Our SIPs extensions can be completed in the fraction of a time taken to build one with conventional bricks and with minimum fuss.


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