Extension Kitz is a leading provider of bespoke extension kits for garden rooms in Manchester. As an established, family-run manufacturer, we are dedicated to transforming your vision into reality with our innovative building solutions.

Our kits are designed for easy assembly, providing super-insulated and stylish garden rooms that can be used for a wide range of purposes. With a strong focus on sustainability, predictable build costs, and a rapid construction process, our kits are the ideal way to make more of your garden space.

The Benefits of a Garden Room in Manchester

A garden room utilises your outdoor area to enhance your lifestyle in any way you choose. It creates a valuable separation between your home and work or leisure activities, which can significantly improve your work-life balance.

Our Manchester customers have used our extension kits to construct:

Home Offices: A dedicated, quiet space away from household distractions.
Art or Yoga Studios: A tranquil environment filled with natural light to inspire creativity.
Home Gyms: A private space for workouts, yoga, or meditation.
Playrooms: A safe and separate area for children to play.
Extra Living Space: Comfortable accommodation for visiting friends and family.
A Peaceful Retreat: A simple, comfortable haven to connect with nature.

What Does an Extension Kit Contain?

An Extension Kitz kit contains all the core components you need, centred around our high-performance Structural Insulated Panels (SIPs). These panels are precision-cut to your exact size and shape requirements in our Greater Manchester factory, allowing for complete design customisation.

Before delivery, your garden room is fully pre-assembled by our team to ensure every part fits together perfectly. The panels are then disassembled, numbered, and coded for straightforward assembly on-site. The detailed instructions included in the kit make a SIPs garden room a manageable project for any competent DIY builder.

What are SIPs?

Structural Insulated Panels are advanced composite panels made from oriented strand boards (OSB) bonded to a core of highly efficient thermal foam. They allow for the speedy construction of warm, strong, and airtight buildings with excellent eco-friendly credentials.

These prefabricated panels are a popular construction material in Scandinavia and North America. We have pioneered their use in the UK and are a leading supplier of SIPs for garden rooms and home extensions. You can discover more about this modern building method on our page, ‘What is a SIP panel?‘.

Design and Customisation for Your Manchester Garden Room

One of the key benefits of SIPs construction is the incredible design flexibility it offers. The panels can be cut to virtually any size and shape, giving you complete freedom in the design of your garden room.

We also offer a wide range of options for roofing and cladding materials, including brick slips and composite cladding, to ensure your bespoke garden room perfectly complements your property. Many customers in Manchester choose garden rooms with large windows or bifolding doors to let in plenty of natural light. However, if privacy is required for a home office, the building can be designed with fewer windows, using rooflights to bring in natural light instead.

You can find inspiration from some of our previous SIPs projects here.

Construction and Installation

Garden rooms made with our extension kits require a level concrete foundation with a waterproof membrane. Once the foundation is ready, the installation of your SIPs garden room is quick and straightforward. The prefabricated nature of the panels means that trades like bricklayers and joiners are not required for the main structure.

The panels are lightweight and easy to handle, allowing a small team to complete the assembly in about a week. This efficiency significantly reduces on-site disruption and labour costs compared to a traditional build.

Insulation and Energy Efficiency

Garden rooms built with SIPs retain heat far more effectively than most traditional construction types. This is because of the super-efficient insulating foam core at the centre of the panels and the airtight assembly, which ensures there are no cold draughts or warm air leaks.

As a result, your garden room will not require significant additional insulation, and your heating costs will be very low. Your outdoor haven will stay cosy and comfortable in all seasons, no matter what the Manchester weather brings.

Are Garden Rooms Environmentally Friendly?

Yes, garden rooms built from our SIPs kits are extremely sustainable, both in their fabrication and throughout the lifetime of the building.

Minimal Waste: Precision pre-fabrication means minimal raw material waste.
Sustainable Materials: The wood used in the panels is sourced from responsibly managed forests.
Energy Efficiency: Superior insulation and an airtight design keep heating requirements low, reducing your carbon footprint.
Reduced Transport Emissions: The panels are extremely light, so less fuel is required to transport them to your site.
Durability: The durable, strong materials offer high levels of fire and pest resistance, ensuring the building will be used for many years with little maintenance.

Find out more about SIPs and the environment.

How Much Do Garden Rooms Cost to Build in Manchester?

It is difficult to give a typical cost, as all our extension kits are bespoke and designed according to your project’s specific dimensions and needs. The final price depends on the size, complexity, and your choice of external finishes.

If you input the dimensions of your project into our quick quote calculator, we can give you an indicative cost. Once you confirm the final measurements, we can provide a fixed price that will not change.

Do Garden Rooms Built from Extension Kitz Need Planning Permission?

Depending on its size, location, and proposed use, your garden room may require planning permission. In many cases, garden rooms fall under ‘permitted development’ rights, meaning formal permission is not needed. However, it is always wise to check with your local planning authority. We have plenty of experience in this area and are happy to advise our customers.

CONTACT THE TEAM TODAY FOR ADVICE

About Extension Kitz in Manchester

Our family-run company specialises in SIPs construction and provides kits for garden rooms, annexes, and home extensions. As the copyright owners and sole manufacturer of the Extension Kitz, we deliver proven, tested, and engineered products that last. We are proud to serve homeowners and developers across the dynamic Manchester region.

Our factory is in Radcliffe, just 11 km north of Manchester city centre, making us a truly local supplier for your project. We supply both professional and self-builders in Greater Manchester, Cheshire, Lancashire, and across the UK.

Manchester is a thriving cultural and business centre, internationally famous for its heritage and its two main football teams, Manchester City and Manchester United. We are committed to helping the city’s homeowners enhance their properties with our high-quality, sustainable building solutions.

How to Find Us

Our Address

Cemetery Works
Cemetery Road
Radcliffe
Greater Manchester M26 4FT

Email: sales@extensionkitz.co.uk
Phone number: 0330 166 0877

Garden Rooms Manchester