SIP Home Extensions – Single Storey
Don’t move, improve!

Moving house is one of the most stressful life events possible, so it’s hardly surprising that more and more homeowners in Shropshire, Worcestershire, and the West Midlands are deciding to improve their homes instead of move. Typically averaging a 12% increase in value, high quality single-story SIP extensions are a cost-effective investment that, more often than not, pay for themselves when it’s time to sell up.

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.

How do SIP extensions work?

SIP home extensions offer more versatility than other construction materials thanks to their strength and ease of connection. A SIP extension creates possibilities beyond the conventional; such as sloping roof panels creating an open space that when utilised, properly maximises any extension building.

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.

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What are the advantages of a single storey SIP extension from Designhaüs?

As FENSA Approved and LABC Assured Installers, we will take care of everything, from building regulations to planning permissions to party wall settlements and everything else in between

An essential 'ALL SEASONS' living space that can be enjoyed all year round, whether it's a larger kitchen or dining area, a focused home office or a separate playroom

Built using the highest quality systems and materials, with a range of external finishes available including brick, cladding, tiles and more

Four stylish roof options to choose from; glass, lantern, tiled or tiled with illuminating Velux roof windows

Substantial internal pelmet option for enhanced comfort

Endless design variations, e.g. window and door styles, decorative flourishes, authentic woodgrain effects ...

Enhanced warmth, efficiency and kerb appeal guaranteed

Fast installation for your convenience

Can add considerable value - single storey extensions have the potential to increase your property value by as much as 12%

Comprehensive product guarantee

If you can imagine it, we can achieve it

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How it works

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

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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.

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

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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.

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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.

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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.

Latest Reviews

Excellent process from the start. Work carried out was of an excellent standard with professional and polite company operatives. slight delay on two finishers for the front door however, Designhaus persevered to obtain the correct colour finishing strips and looks great. Very pleased

Ashley Morris

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Latest Reviews

Really pleased with my Garden Room by Designhaus.

The Designhaus team are excellent, Professional, friendly and efficient going above and beyond to make sure you have your dream build.

My garden is transformed!

I would highly recommend Designhaus you won’t be disappointed.

Miss Rosé

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Latest Reviews

My wife and I are extremely pleased with the with the tiled roof conversion to our conservatory.

The whole project was executed very efficiently by a team of well organised, friendly, and competent professionals.

We now have a very attractive ROOM to sit in, with year-round warmth and comfort.

Thank You Designhaus.

Mr & Mrs Ketteringham

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  • 55 Colmore Row
  • Birmingham
  • B3 2AA