At Extension Kitz, we specialise in manufacturing and supplying premium Structural Insulated Panels (SIPs) for extensions, garden rooms and annexes. As a family-run business with years of industry experience, we are dedicated to converting your vision into reality with our innovative, self-build extension kits. Whether you are a homeowner looking for more space or a builder seeking a reliable supply solution, our Poynton SIP extensions offer the perfect blend of speed, quality and thermal efficiency.

Contact our friendly team for a free quote.

Why Choose a SIP Extension in Poynton?

Modern families need modern solutions. Traditional brick and block construction can be slow, weather-dependent and disruptive. Our SIP extension kits offer a superior alternative, engineered precisely for your needs in our 40,000sq ft purpose-built factory.

Structural Insulated Panels are rapidly becoming the preferred choice for house extensions in Poynton. They allow you to create eco-friendly, thermally efficient and durable spaces without the long waiting times associated with traditional builds.

The Advantages of Building with SIPs:

Speed of Construction: Our extensions are dry-built in our factory. This means panels are cut, prepped and ready for rapid assembly on site. We can get your structure up and watertight in just a few days.
Superior Strength: Once built, our SIP structures are three times stronger than average brick builds and seven times stronger than timber-framed buildings.
Thermal Efficiency: With a U-value of 0.15 as standard, our walls are incredibly warm. The polyurethane core ensures high insulation performance, saving you money on heating bills.
More Space: SIP walls are slimmer than traditional builds, giving you increased internal floor space to enjoy.
Eco-Friendly: We use timber from sustainable sources and our precise manufacturing process reduces waste.

How We Deliver High-Quality SIP Extensions

We are not just suppliers; we are the copyright owners and sole manufacturers of the Extension Kitz system. This distinction is crucial for your peace of mind. When you choose us for your project in Poynton, you are dealing directly with the experts who designed the product.

Our factory operates under strict controlled conditions. This ensures that every panel we produce meets rigorous quality standards before it ever reaches your property. We have a dedicated Research and Development arm that constantly works to improve our existing offerings and design new products, keeping us at the forefront of construction technology.

Our Seamless SIP Extension Process

Fabrication: Skilled staff fabricate your system to exact dimensions.
Preparation: External membranes and battens are factory-fitted, ready to take your preferred finish, whether that is brick slips, cladding or render.
Delivery: We deliver nationwide, bringing the complete kit directly to your site in Poynton.
Installation: We can manage the project from start to finish. You can choose to have it installed by our expert team or one of our preferred installers.

We provide full support throughout the process. Our technical support team is always on hand to answer queries, ensuring a smooth build from design to completion.

Contact our friendly team for a free quote.

Tailored SIP Extensions for Every Poynton Home

No two homes in Poynton are the same, and neither are our extensions. Our SIP panels can be fabricated to fit nearly any building design. We typically use panels that are 1220mm wide and up to 3 metres in length, allowing for flexible design configurations.

What Types of Spaces Can We Create?

Single Storey Extensions: Ideal for expanding your kitchen, dining area or creating a new downstairs bedroom.
Garden Rooms: Perfect for home offices, gyms or creative studios detached from the main house.
Annexes: Self-contained living spaces for relatives or guests.
Orangeries: A modern, thermally efficient take on the classic conservatory.
Commercial Projects: We also manufacture extensions for schools and modular educational buildings.

Explore our SIP projects to see how we have transformed properties similar to yours.

Built to Last: SIPs and Building Regulations

Navigating building regulations can be daunting for homeowners. At Extension Kitz, we ensure that your job is guaranteed and covered by Building Regulations. Our products are tried, tested and engineered to last.

Fire Safety and Durability:
Our SIPs generally exceed British Fire Safety regulations, offering excellent fire resistance. Furthermore, because the core is made from foam, the panels are not susceptible to pests, adding to the longevity of your investment.

Foundation Flexibility:
One of the major advantages of our lightweight system is the flexibility with foundations. While most people opt for a simple concrete base, our SIPs are light enough that they can often rest on existing foundations (subject to approval). This is particularly useful when transforming an old conservatory into a proper extension. It reduces the need for expensive substructures and groundworks, saving you money and disruption.

You can learn more about the technical specifications of our panels on our dedicated SIPs information page.

Why Choose A SIP Extension?

Choosing a SIP extension is a smarter way of building. It combines the speed of erection with the strength of our walling system and exceptional energy efficiency.

Our unique jointing system for walls and roofs ensures airtight construction. This eliminates cold spots and draughts, making your new room comfortable all year round. Unlike a conservatory that might be too hot in summer and too cold in winter, an Extension Kitz build is a fully functional part of your home 365 days a year.

We also offer a range of exterior finishes. You can choose from brick slips to match your existing property, modern cladding for a contemporary look, or traditional render. Because the external membrane and battens are factory-fitted, the exterior finishing process is quick and straightforward.

Our Commitment to Quality and Innovation

We pride ourselves on being an innovative manufacturer. Our goal is to make the process of extending your home as stress-free as possible. We offer a design and supply solution that is cost-effective without compromising on quality.

Whether you need a lean-to, a standalone garden room or a complex side extension, we have the expertise to build it seamlessly. Our team manages projects with the care and attention to detail you would expect from a family-run business.

We invite you to browse our gallery to view the high standard of our finished projects. Seeing the quality of our work can help you visualise what is possible for your own home in Poynton.

Use our quick cost calculator for a no obligation quote.

Let’s Build Your Dream Extension in Poynton

If you are considering an extension in Poynton, do not settle for outdated construction methods. Choose a system that is faster, stronger and warmer. Choose Extension Kitz.

We are ready to help you create the extra space you need. From the initial design to the final installation, our team is here to support you every step of the way.To discuss your requirements or to learn more about our modular house extensions, please contact our friendly team.

Location Map

About Poynton

Poynton, a Cheshire town on the edge of the Cheshire Plain, has around 14,000 residents and is close to the Peak District. Once a coal-mining hub, it’s now a residential area popular with Manchester and Stockport commuters. The town features diverse housing styles, landmarks like Poynton Pool and the Anson Engine Museum, and excellent transport links, blending rural charm with urban convenience.