We can supply self-build garden room kits, complete with windows, doors, cladding, roof and roofline, or a shell for you to finish yourself.  Our 'made-to-measure' service is available for anyone looking for a bespoke garden room solution.

Create the perfect space for any garden with a SIPs garden room kit. Ideal for home offices, granny annexes, or an insulated garden room.

With thermally efficient structures that offer easy fitting to save on construction time, minimise labour costs, and reduce your customer’s energy bills, you can say goodbye to lengthy, disruptive, and expensive builds — our SIP panel systems provide a win-win situation for you, your pocket, your customers, and the environment. 

Embrace a quicker, more cost-effective, and environmentally friendly solution for garden buildings and annexes. Transform any space with Ultra SIP Panels and enjoy the benefits of innovation and efficiency.

Explore the versatility that garden rooms from Ultra SIP Panels can add to a project…

Thermally efficient

Our 147mm panel offers an exceptionally low U-value of 0.17 W/m²K, while our 172mm roofing panel offers an even better 0.15 W/m²K, meaning lower fuel bills with incredible efficiency and airtightness.

Time and cost savings

We can offer a 10–14-day turnaround from the internal sign-off of your panels being delivered. On-site build time for SIP panel systems is up to 3x faster than conventional construction. Once your designs are approved, the price is final, so you won’t end up paying for a delay.

Full kit

We can supply the full kit required for constructing a garden room. We offer panels and timbers cut to size, internal and external battens, internal plasterboard, external cladding, and all the glues and fixings required for on-site assembly.

Lightweight

The lightweight construction of our SIP panels means that they can be used on existing bases and foundations for extensions or conservatories.

Environmentally friendly

SIP panel builds use up to 60 percent less timber than a traditional timber-frame extension.

More floor space

The slim construction of SIP panels means that you have more floor space than a conventional, brick-built extension.