- SIP wall, roof and floor panels 122mm thick (100mm insulation)
- SIP floor panels with bitumen coated underside
- Water resistant floor bearers
- Door opening and lintel sized to room from 2 metres to 2.8 metres
- All splines, timber cappings and floor and top plates
- Full fixing kit of screws and timber locks
- Expanding foam and wood glue
- D.P.C. and rain sheet
- Full instruction guide and video
- Full technical drawing, including ground screw layout (if required)
Premier Witcombe DIY Garden Room Kit
The Premier Witcombe has the look of a more traditional garden room and incorporates a stylish recessed front wall.
The second of our apex designed rooms, this elegant design offers great variety in its potential uses while achieving height requirements for permitted development if the room is located 2 metres from boundaries.
Starting at a width of 4m, the Premier Witcombe is a statement room of the highest quality.
Premier Witcombe Shell Kit Specification

Premier Witcombe Shell Kit Prices
(Prices include VAT. Prices exclude delivery and installation. Dimensions shown are internal sizes.) Find an installer.
Premier Witcombe Shell & External Kit Specification

- SIP wall, and floor panels 122mm thick with 100mm insulation
- SIP Roof Panel 122mm thick (100mm insulation)
- SIP floor panels with bitumen coated underside
- Water resistant floor bearers
- External cladding of choice + 10%
- Glazing for your size of room and lintel in UPVC Anthracite Grey (Anthracite Grey external and White internal)
- Breather membrane
- Cavity batten
- EPDM complete rubber roof kit
- Guttering and down pipe
- All splines, timber cappings and floor and top plates
- Stainless steel brad nails
- Full fixing kit of screws and timber locks
- Expanding foam and wood glue
- D.P.C. and rain sheet
- Full instruction guide and video
- Full technical drawing, including ground screw layout (if required)
Premier Witcombe Shell & External Kit Prices
(Prices include VAT. Prices exclude delivery and installation. Dimensions shown are internal sizes.) Find an installer.
Premier Witcombe Complete Kit Specification

- SIP wall, and floor panels 122mm thick with 100mm insulation
- SIP Roof Panel 122mm thick (100mm insulation)
- SIP floor panels with bitumen coated underside
- Water resistant floor bearers
- External cladding of choice + 10%
- Glazing for your size of room and lintel in UPVC Anthracite Grey (Anthracite Grey external and White internal)
- Breather membrane
- Cavity batten
- EPDM complete rubber roof kit
- Guttering and down pipe
- All splines, timber cappings and floor and top plates
- Stainless steel brad nails
- Full fixing kit of screws and timber locks
- Expanding foam and wood glue
- MDF decorative panel internal wall finish
- D.P.C. and rain sheet
- Full instruction guide and video
- Full technical drawing, including ground screw layout (if required)
Premier Witcombe Complete Kit Prices
(Prices include VAT. Prices exclude delivery and installation. Dimensions shown are internal sizes.) Find an installer.
Cladding Options
Our Shell & External and Complete Kits give you the choice of external cladding for your garden room kit. There are 3 choices: Thermowood, British Cedar and Western Red Cedar. Prices are shown for each option on our kit models pages and assume all four walls of the building are clad in one timber type.
You can vary whether all sides of your room are clad in the same timber; where external walls are not visible you may prefer to opt for the cheaper timber and we can provide a price change for this on request.
Glazing Options
Shell Kit aperture: 2800mm
Shell & External and Complete Kits: 2800mm of either sliding patio or French doors with two glazed side panels.

French Doors With Two Side Panels

Sliding Patio Door
Installation Videos

Extras & Upgrades
We offer upgrades and extras if you wish to customise your garden room kit.
We can offer bespoke sizes in the entire Premier range. Our Classic range is only available in the sizes shown.
In both Premier and Classic ranges the Shell & External Kit and Complete Kit’s cladding can be changed from side to side, e.g. 2 sides Cedar and 2 sides Thermowood.
Additional windows and doors can be added to all Premier models and glazing can be upgraded to aluminium and/or bi-fold doors if desired.
Additional costs will be quoted accordingly.
Our Premier DIY Garden Room Kits
Our Classic Range DIY Garden Room Kits

How To Order from Us
If you would like to find out more, discuss a project you’re planning or request a quote, please call us on 01452 501455 or email us at [email protected], where we are on hand to discuss the additional space you’d like to create.
We can navigate you through the options and provide helpful and technical advice.
No sales jargon, just the facts about why our garden room kits are the best product in this market.
Alternatively, please complete the enquiry form and we’ll be in touch.
If you would like to visit us, please call us on 01452 501455 to book an appointment.