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Fortis SIP Workshop Style A | End Door Insulated Garden Workshop
Delivery
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Details
The Fortis SIP Workshop Style A is a fully insulated garden building made from Structural Insulated Panels through the walls, roof and floor, so it stays warmer in winter and cooler in summer — ready for year-round use as a workshop, home office, studio or gym. Style A places the door in the end wall, leaving the long front free for a run of windows and uninterrupted bench space inside. Its slim 72mm walls give thermal resistance comparable to around 200mm of solid log walling, finished with an engineered LP SmartSide timber exterior supplied primed for your own colour, a Hi Pent EPDM rubber roof and a steel-reinforced uPVC door and windows in Anthracite Grey.
Product Details
- Sizes: 8x8, 8x12, 8x16 and 8x20 — all 8ft (2440mm) deep, from 2562mm to 6222mm wide
- Layout: Door in the end wall, opening windows along the front
- Construction: Structural Insulated Panels (SIPs) through the walls, roof and floor
- Walls: 72mm SIP — LP SmartSide engineered exterior, 50mm graphite-enhanced EPS insulation, 11mm OSB3 interior (U-value 0.50 W/m²K)
- Roof: 122mm SIP Hi Pent with 100mm insulation and a supplied EPDM rubber covering (U-value 0.27 W/m²K)
- Floor: 72mm insulated SIP with a 12mm exterior-grade plywood surface (EN 314-2 Class 3) on pressure-treated bearers
- Door: Steel-reinforced uPVC with multipoint locking
- Windows: Opening uPVC (Rehau Total 70) with 28mm toughened double-glazed units and two-position locking
- Frame colour: Anthracite Grey (RAL 7016) grained foil
- Exterior: Factory primed, ready to paint in your choice of colour
- Interior: OSB walls and plywood floor — leave as is for a workshop or finish to suit an office or studio
- Electrics: Not included — any supply must be fitted by a qualified electrician
- Delivery: Free UK mainland delivery — some remote postcodes may carry a surcharge, shown when you enter your postcode on this page
- Supplier: Shire
U-values are calculated centre-of-panel figures for each element, and the log-wall comparison relates to thermal resistance only. Install on a level, free-draining base with damp-proof isolation beneath the bearers and airflow under the floor, then complete the paint finish over joints, fixings and cut edges after assembly. Browse more in our Garden Buildings range at Oak & Outdoor.
FAQs
Delivery Information
Shipped within 4 weeks - See further information below.
Quality & Assurance
Shire is one of the UK's leading garden building manufacturers, trusted for decades to build quality timber sheds, cabins and greenhouses that are made to last. Every building is pressure-treated as standard and backed by free UK mainland delivery. Be the first to leave a review at Oak & Outdoor.
Product Specifications
Specifications
- Building Type
- Insulated SIP Garden Workshop
- Roof Style
- Hi Pent
- Layout
- Door in end wall, windows along front
- Wall Panels
- 72mm SIP: LP SmartSide exterior / 50mm EPS PlusTherm / 11mm OSB3
- Roof Panels
- 122mm SIP: 100mm EPS PlusTherm insulation
- Floor Panels
- 72mm SIP: 12mm exterior plywood (EN 314-2 Class 3)
- Floor Support
- Pressure-treated timber bearers
- Roof Covering
- EPDM rubber
- Wall U-value
- 0.50 W/m²K (centre-of-panel)
- Roof U-value
- 0.27 W/m²K (centre-of-panel)
- Floor U-value
- 0.49 W/m²K (indicative)
- Door
- Steel-reinforced uPVC, multipoint locking
- Windows
- Opening uPVC (Rehau Total 70), 28mm toughened double glazing
- Frame Colour
- Anthracite Grey (RAL 7016)
- Exterior Finish
- Factory primed, ready to paint
- Electrics
- Not included
Dimensions
- Base Depth (all sizes)
- 2440mm 8ft 0in
- 8x8 Base Footprint
- 2440 x 2562mm 8ft 0in x 8ft 5in
- 8x12 Base Footprint
- 2440 x 3782mm 8ft 0in x 12ft 5in
- 8x16 Base Footprint
- 2440 x 5002mm 8ft 0in x 16ft 5in
- 8x20 Base Footprint
- 2440 x 6222mm 8ft 0in x 20ft 5in
- Overall Width incl. Roof
- 8x8 2923mm / 8x12 4149mm / 8x16 5366mm / 8x20 6600mm
- Overall Depth incl. Roof
- 2950mm 9ft 8in
- Max Height
- 2500mm 8ft 2.5in
- Eaves Height
- 2140-2290mm depending on size
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Further Information
Does this come with a guarantee?
Shire is one of the UK's leading garden building manufacturers, crafting timber sheds, summerhouses, log cabins, playhouses and workshops in Britain since 1981 from its factories in Cambridgeshire and Lincolnshire, using slow-grown timber from sustainable plantations. Every building comes with a 12-month manufacturer's warranty as standard, plus a conditional 10-year anti-rot guarantee against timber decay and insect attack. Buildings arrive pre-treated with a water-based coat for transit only; to keep the anti-rot cover valid, apply a high-quality spirit-based timber preservative shortly after installation and re-treat annually.
When will I get my order?
Shire garden buildings are made to order, so lead times vary by product and size. The estimated dispatch time for this building is shown above. As timings can change with demand, please check the product information or contact us for confirmation before ordering if you need your building by a specific date.
How much does delivery cost?
In most cases, delivery is free to UK mainland addresses. For full T&Cs, visit our delivery page.
Care & Maintenance