The DuraLast is a windowless composite timber workshop with a heavy duty build spec and no windows for maximum wall space and security.
The Duralast Windowless Garden Workshop is built from robust composite timber cladding with doubled-up framing throughout, giving a heavy-duty, low-maintenance structure that won't rot or warp. With no windows, it maximises usable wall space and security, making it ideal as a secure workshop or storage space. Pre-assembled modular panels make for a straightforward build, complete with a black sand felt roof, 11mm T&G floor as standard, and a 15-year anti-rot guarantee* for lasting peace of mind.
Prices as per the live configurator. Paint/trim swatch colours are indicative approximations.
Weather-resistant composite exterior cladding with a 15-year anti-rot guarantee*.
Taller than a standard shed, more headroom, more usable space inside.
Full, uninterrupted wall space inside for shelving, racking and storage.
Composite timber protects against fungal decay and rot, painting required annually.
Contemporary pent roof with thicker purlins and black sand felt as standard.
Flatpacked and fits through a standard UK door with all fixings included.
No hidden extras and no surprise add-ons. Your Garden Workshop arrives complete — every panel, fixing and fitting ready to go.
Composite timber construction for superior weather protection and durability.
Extra timber at every joint for a stronger, more rigid structure.
Tongue-and-groove floor and roof for a solid, tight build.
1.8m Double T&G doors as standard.
Pre-assembled sections that fit through a standard door.
Composite materials are guaranteed against fungal decay and rot for 15 years.
Stage-by-stage illustrated instructions with all fixings included.
We offer free UK delivery on selected postcodes.
The DuraLast uses the same composite cladding system as the Truman, a material that resists moisture, impact and UV. No windows keeps the contents hidden and gives you full wall space for shelving and racking throughout.
Each panel is built on a 27x44mm structural timber frame and clad in composite boards that are more resistant to moisture, impact and weathering than standard tongue and groove timber. The whole building should be painted or treated annually to maintain the anti-rot guarantee and keep the structure in the best condition.
Each panel is built on a 27x44mm structural timber frame and clad in composite boards that are more resistant to moisture, impact and weathering than standard tongue and groove timber. The whole building should be painted or treated annually to maintain the anti-rot guarantee and keep the structure in the best condition.
Your Garden Workshop arrives as pre-assembled, pre-insulated panels — designed to fit through a standard UK doorway and slot together with far fewer parts than a traditional log cabin. A quicker, simpler build, whether you do it yourself or bring in help.
Every building includes clear, step-by-step illustrated instructions. We recommend two people with basic DIY know-how — or add our assembly service at checkout and we'll handle it for you.
Add assembly at checkout →
Choose 11mm or 19mm tongue and groove floor to suit how you plan to use the building.
Multiple sizes from compact to large.
Add guttering to manage rainwater runoff and protect the base of your building.
High-quality paint supplied in a tub. Apply after assembly to colour and protect the timber.
Optional timber base frame for use on firm, level ground if you don't have an existing concrete or paved base.
Built around how you use it, with options to make it exactly right.
Select a size above to see the full specifications.
| Overall Width | 253 cm |
| Overall Depth | 229.2 cm |
| Total Wall Thickness (incl. insulation) | 80 mm |
| Width (internal) | 229 cm |
| Depth (internal) | 174.3 cm |
| Eaves Height (inc. floor) | 230.7 cm |
| Eaves Height (excl. floor) | 218.2 cm |
| Ridge Height (inc. floor) | 240.2 cm |
| Ridge Height (excl. floor) | 227.7 cm |
| Eaves Height (internal) | 204.4 cm |
| Ridge Height (internal) | 212.4 cm |
| Door Height | 180 cm |
| Door Width | 73 cm |
| Door Opening (H × W) | H180 × W73 cm |
| Glazing Thickness | 4–20–4 mm |
| Frame Thickness (H × W) | 2.7 × 4.4 cm |
| Overall Floor Size (W × D) | 249 × 194.3 cm |
| Base Size | 244 × 189.3 cm |
| Cladding | 9mm LP Strongcore composite |
| Floor material | Tongue & groove |
| Roof material | Galvanised steel & foam insulation |
| Roof covering | Galvanised steel |
| Glazing | Double glazing |
| Building type | Garden room |
| Windows | 4 |
| Roof style | Pent |
| Cladding style | Composite board |
| Locking system | UPVC multi-point |
| U-value, metal roof | 0.49 W/(m²·K) |
| U-value, walls & floor | 0.31 W/(m²·K) |
| Pre-assembled panels | Yes |
| Interchangeable windows | No |
| Fixtures & fittings | Yes |
Free delivery to selected postcodes, and Made in Britain.
"Genuinely warm in winter — I work in here every day now. Build quality is excellent."
"Panels went together far faster than I expected. The composite finish looks premium."
"From order to install was seamless. The team kept me informed the whole way."
British-made garden buildings, designed and built in Nottinghamshire.
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