18×10 Apex Workshop – Double Door, Windowed

£2,775.00

18 others have LOOKED at this in the last few hours.

Featuring an EXTRA higher doors and apex roofline, this workshop is made of thick tongue and grooved wood that’s durable and weather-resistant. A wooden floor, roofing felt, and fixings are included.

Easy to adapt: You can place the windows either side during assembly!

Enhanced by a HAZELNUT GOLD preservative, this will extend its longevity and provide additional protection.


Estimated Delivery 8-12 Weeks

Subject to delivery postcode. We’ll contact you before your order is delivered to confirm the details.

Guarantee

You get a free 15 year timber GUARANTEE with every FORTRESS garden building you purchase from us..

Reviews

5.0
5.0 out of 5 stars (based on 74 reviews)

Home Assembly

DIY not your thing? We'll assemble it for you. VIEW PRICES

Flexible, interest-free payments available with  and

Why buy the RAINBOW Apex Workshop?

Generous Headroom

In all of our sheds, the doors are higher and the ridges are higher, which makes accessing and exiting the building easier and more comfortable.

Wall Cladding

In addition to the tongue and groove construction, sheds are clad in a unique shiplap cladding constructed of 12mm thick tongue-and-groove timber.

Premium Felt

Standard on all sheds is high performance polyester mineral felt. This type of barrier provides reliable weatherproof protection with less wear and tear.

Durable Framework

The slow-grown European timber we use is 34 x 44mm thick, providing you with the greatest support your shed needs. All four corners are rounded for a smoother finish.

Wood Preservative

Our sheds are prepared for preservation with our unique 365-day Rainbow-Skin. A 48-hour drying period is followed by applying this pre-treatment to the wood.

Easy Assembly

With the help of the instructions provided, sheds are one of the easiest to assemble. The foundation must be firm & level before construction can begin!

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Dimensions Metric (mm) Imperial (inches)
Width (excluding roof) 3019mm 118.85″
Depth (excluding roof) 5435mm 213.97″
Width (including roof) 3129mm 123.18″
Depth (including roof) 5503mm 216.65″
Eaves Height (inc floor) 2091mm 82.32″
Eaves Height (internal) 2024mm 79.68″
Ridge Height (internal) 2551mm 100.43″
Ridge Height (inc floor) 2661mm 104.76″
Door Opening Size (w x h) 1569mm x 1884mm 61.77″ x 74.17″
Door Height 1930mm 75.98″
Door Width 1593mm 62.71″
Width (internal) 2909mm 114.52″
Depth (internal) 5325mm 209.64″
Minimum Base Width 2995mm 117.91″
Minimum Base Depth 5413mm 213.11″
Specifications     Metric Imperial
Cladding Material Shiplap Cladding Thickness 12mm 0.47″
Framing Style Standard Framing Size 34mm x 44mm 1.33″ x 1.73″
Roof Material Tongue & Groove Board Roof Thickness 12mm 0.47″
Floor Material Tongue & Groove Board Floor Thickness 12mm 0.47″
Door Style Double Door Z Braced Door Material Tongue & Groove Board  
Window Style All Fixed x 9 Window Size 457mm x 610mm 17.99″ x 24.02″
Glazing Material Toughened Glass Glazing Thickness 3mm 0.12″
Roof Covering Polyester Mineral Felt Treatment Hazelnut Gold (Water Based)  
Locking System Lock and Key + 2 Tower Bolts Material European Softwoods  

ZONE 1 POSTCODES FREE (Mainland only)
AL, B, BA, BB, BD, BH, BL, BN, BR, BS, CA, CB, CF, CH, CM, CO, CR, CV, CW, DA, DE, DG, DH, DL, DN, DT, DY, E, EC, EH, EN, FY, G, GL, GU, HA, HD, HG, HP, HR, HU, HX, IG, IP, KA, KT, L, LD, LE, LL, LN, LS, LU, M, N, NE, NG, NN, NP, NR, NW, OL, OX, PE, PO*, PR, RG, RH, RM, S, SE, SG, SK, SL, SM, SN, SO, SP, SR, SS, ST, SW, SY, TA, TD, TF, TN, TS, TW, UB, W, WA, WC, WD, WF, WN, WR, WS, WV, YO.

ZONE 2 POSTCODES £75.00 (Mainland only)
CT, EX, FK, KY PA, SA

ZONE 3 POSTCODES £125.00 (Mainland only)
AB, DD, PH, PL, TR, TQ

NO DELIVERIES
IV, KW, PO (ISLE OF WIGHT)

If your postcode is not currently listed within the above delivery zone but you are interested in finding out the availability and / or price of a delivery of one of our garden buildings to your home please contact our customer service department on 0333 577 3308 for information.

 

HOW DOES DELIVERY WORK?

Before your order is ready to be dispatched, we will contact you on the phone number/email you provided and arrange a suitable delivery date with you closer to estimated delivery times.

As your order will arrive in panels, we are required to use HGV transport. Please advise ASAP if your property is not suitable for delivery by a heavy goods vehicle as we will need to inform the delivery company and make special arrangements for a smaller vehicle.

All deliveries are made to the kerbside only, unless otherwise agreed. In order for the driver to deliver to you, you will need to provide an appropriate area as close as possible to your kerbside.

It is not the driver's responsibility to unload the pallet of panels.

It is the customer's responsibility to move delivered goods beyond the kerbside.

Well made

July 2, 2026

Lovely well made shed … all as described

Avatar for Mark
Mark

Really impressed

April 4, 2026

Just had my shed delivered and I’m really impressed. Everything arrived on time and well packaged. I built it myself and had no issues at all — the instructions were clear and all the parts fitted together properly. The quality of the materials is excellent and it feels very solid and well made. You can tell it’s built to last. Overall, very happy with the purchase and would definitely recommend.

Avatar for Amanda Clarkson
Amanda Clarkson

Arrived on time

November 4, 2025

Our new shed arrived on time and was put together in quick efficiency. Would well recommend this company

Avatar for Chrissy and Alan
Chrissy and Alan

Good price

October 3, 2025

Great service – ordering simple, good price, delivery spot on, fitting perfect! Top quality shed, modular design really good, as could specify exactly where door/windows would be.

Avatar for Clive Duerden
Clive Duerden

Love it

September 25, 2025

Wonderful dog kennel, Marley loves it.

Avatar for Fran. B
Fran. B

Write a Review

Rainbow's 15-year guarantee covers general timber rot and decay - it does not cover timber splits or warping which may occur naturally over time.

To maintain the validity of this guarantee the product must be assembled strictly in compliance with the instructions supplied, treated annually with an appropriate high-quality preservative and all glazing units must be sealed with silicone or another watertight sealant, inside and outside.

More information
18x10 Apex Workshop - Double Door, Windowed
18×10 Apex Workshop – Double Door, Windowed