Special Deals
Royal Denham Pent Garden Room Office under 2.5m tall
Our Denham pent comes with sliding doors and no windows. All models can fully bespoke to suit. Available with an apex roof (but would be over 2.5m)

Free Installation - Insulated - Double Glazed - Bespoke Options - Under 2.5m Tall (pent) models - Site Surveys



Check out Extra Images in our Photo Gallery
Large Range of Available Colour Options
Images of PVCu Available
Bronze Anti Sun Window Tinting
Optional Integral Blinds
Examples of Internal Finishes
View Laminate Floor Option
View UPVC Style of Building

Royal insulated garden room range

5% Off

Additionally we will throw in a free upgrade of the internal wall lining to the superior white MDF finish. Discount does not apply to building upgrades or additional services such as electrics or basework. Order online or visit us to see 4 examples of these buildings on display
Offer available on all orders received prior to 5pm on 30th November 2025

Royal Denham Garden Room

Customise Options

5% reduction on orders placed by 30th November
This will be taken off in basket before payment.
Delivery to take place within 12 weeks.

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Product Leaflet
What is LP® StrongCore™ cladding and why is it so good?
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Delivery Area Map
Delivery Costs
Free Assembly Service in Green Area
Green Areas - FREE Delivery & Assembly (MAINLAND ONLY)
Yellow Areas - Usually 7.5% extra charge but currently a special promotion. FREE Delivery & Assembly (MAINLAND ONLY)
Red Areas and London Congestion Zones- Sorry Unable to Deliver
Click Here For Delivery Time and Delivery Restrictions
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Fully Insulated Royal Garden Rooms. Fully Bespoke. Free Installation.

When we designed our Royal Range of garden rooms we sat down with a blank sheet of paper and set out to create what would truly be the Rolls Royce of our extensive range of quality garden spaces. We determined that they should fuse the finest of traditional values – gleaned from our decades in this industry – with the very latest materials to create a building which offers the very best experience to everyone who steps inside of it.
Whilst you will always need to heat and cool any building we felt it essential to minimise this ongoing expense as much as possible so we specified the building as highly as we could. All buildings boast residential quality PVCu doors and windows with 28mm double glazed sealed units for maximum performance. The building is insulated to all sides: the warm-deck roof and under floor insulation being foil-backed PIR; the walls being upgraded to benefit from the space-age properties of the latest PIR (Celotex/Kingspan) insulation. These combine to ensure a snug warm building in winter and a comfortable place to spend your time in the summer.
We have also gone all-out on reducing maintenance by offering the building in the market-leading Strongcore cladding (a resin and engineered wood composite material) as our preferred option with a pressure treated timber cladding for instances where the building needs to blend to a more traditional setting. We pride ourselves on the outstanding quality of our garden rooms and garden offices and, with thousands upon thousands of happy customers, our personal service and customer care are second to none. Why not pop in to our Sutton Green display centre to view an example building and to talk through the options. Your home may just thank you!
This Royal garden room INCLUDE full insulation and UPVC double glazing as standard ensuring the ideal conditions for all year round use.
Strongcore buildings are available in a range of colours. Pressure treated have an optional coloured stain.
Personalise your building in a range of colours. Natural features of the wood such as grain, knows and fixings may still be visible. Timber garden rooms will still be pressure treated ensuring a very long life for your new building.
Don’t Buy On Price Alone! – These buildings are exceptional value for money but no corners are cut in production. These Platinum units are NEVER made down to a price so be very wary of other products which seem especially cheap!.
Click on map to see post code areas
Double Glazed UPVC In Doors & Windows – 15mm Thick Long Lasting T&G Floor Boards. Proper Timber – Not INFERIOR OSB – Pressure Treated or Strongcore – Opening Window(s) Included As Standard – Free Assembly*
Royal Garden Rooms with Colour Paint Finish Option and make your new Royal Garden Rooms special.
Royal treatment chart available for Royal Garden Rooms - 1st Choice Leisure Buildings
Royal treatment chart available for Royal Garden Rooms - 1st Choice Leisure Buildings
Royal treatment chart available for Royal Garden Rooms - 1st Choice Leisure Buildings
Royal treatment chart available for Royal Garden Rooms - 1st Choice Leisure Buildings
Please note that all colour shown are indicative only and will vary depending upon the light on the day the photo was taken. Additionally all screens will display the image differently. If exact colour is essential then please order a sample pot.

Brief Specifications

✅ Width: 8ft – 20ft (other sizes possible)
✅ Depth: 6ft to 12ft (other sizes possible)
✅ Installation: Free Assembly Included.
✅ Wall Material: Pressure Treated or Strongcore
✅ Cladding: Horizontal T&G Option or Strongcore Composite
✅ Internal Lining: 12mm Horizontal or Vertical T&G or White MDF Lining (Vertical)
✅ Roof Height: Pent Models Under 2.5m tall
✅ Walls Height: Varies. Please Check.
✅ Door: Sliding Patio Doors Double Glazed. 6ft wide or 8ft wide depending upon the building width
✅ Roof Type: Normally Flat but Option for Apex Roof
✅ Overhang: Varies.
✅ Windows: UPVc Double Glazed With Openers on Side Windows. Many Options Available to Suit
✅ Treatment: Painted Strongcore or Pressure Treated
✅ Floor: Heavy Duty 20mm. Laminate Floor Option
✅ On Display: Surrey Show Room

WALLS
A sturdy joinery-grade framework with a total finished dimension of 85mm x 34mm provides the strong skeletal structure at the heart of the wall structure. This is screwed together and the exterior protected against the elements by way of a VPL vapour barrier and an external cladding of your choice:
• LP Strongcore resin and engineered wood composite cladding (painted externally in a colour from the Tikkurila Opaque paint system range)
• 19mm (15mm finished) Pressure treated T&G Shiplap
• 22mm (20mm finished) Pressure treated T&G Loglap
We sandwich PIR (Celotex/Kingspan) insulation between the wall framing to create an insulation barrier with superior performance before cladding the interior with 16mm (12mm finished) thick horizontal T&G pine matchboarding for a warm soft appearance. We can clad vertically upon request for a small additional sum.
FLOOR
19mm (15mm finished) pressure treated T&G floor boards set on a 70mm x 34mm enclosed floor frame and joists. For insulation purposes we insulate between the floor joists with Celotex/Kingpan foil-backed PIR insulation. There is an option to specify 22mm (20mm finished) T&G floor boards in lieu and you can even specify laminate flooring in a selection of colours from the Howdens Professional V Groove range if desired (see colour options below).
ROOF
All roofs are constructed using the principles of a ‘warm deck’ roof system to maximise space within the building using Celotex/Kingspan foil-backed PIR insulation laid atop the roof deck. Pent roof buildings benefit from being covered with the market leading Firestone RubberCover EPDM rubber roof membrane which is glued to the roof deck with a special adhesive. The roof covering is designed to last the entire lifespan of the building. Apex roof buildings come with long-lasting decorative felt tiles (in a choice of green, red or black) specified as standard with an option for Onduvilla (a traditional clay-tile effect), Tapco (a classic slate effect roof tile) or a warm natural cedar shingle roof

GUTTERING
Black PVC gutters and downpipes are fitted as standard in order to harvest the rainwater run-off whilst protecting the building.

HEIGHTS
Our standard design would see a very generous clear internal height. Please note that all dimensions quoted are indicative/nominal and that these may vary depending upon building design and roof covering:

Pent models:
Low wall height: Internally 2.12m (7’) Externally 2.21m (7’ 3”)
High wall height: Internally 2.25m (7’ 5”) Externally (to top of roof canopy) 2.49m (8’ 2”).

Apex models:
These buildings are made to order but a typical configuration might see the following dimensions used:
Low wall height: Internally 2.12m (7’) Externally 2.21m (7’ 3”)
Ridge height: Internally 2.25m (7’ 5”) Externally 2.80m (9’ 2”)

DOORS & WINDOWS
We fit all buildings with high specification PVCu doors and windows as standard. These are similar to those fitted in modern residential properties and features include multi chamber frame profiles, draught excluders and a high standard of ironmongery. All glass within the doors and windows are 28mm sealed units and there is a wide range of colours available (see below) at no extra cost.

ALL YEAR ROUND USE
With the highest specification throughout this is truly a year-round building which will be every bit as comfortable as your home itself. The double glazed windows and the high grade insulation throughout the building ensure that your investment is warm in winter and cool in the summer.

FREE Assembly Service in Green Area
Green Areas - FREE Delivery & Assembly (MAINLAND ONLY)
Yellow Areas - Usually 7.5% extra charge but currently a special promotion FREE Delivery & Assembly (MAINLAND ONLY)
Red Areas and London Congestion Zones- Sorry Unable to Deliver
Supplier Current Delivery Times Delivery Areas
Diamond Timber Garden Buildings Approximately 4-6 weeks Diamond Delivery Area
Sapphire Timber Garden Buildings Approximately 4-8 weeks Sapphire Delivery Area
Platinum Timber Garden Buildings Approximately 4-8 weeks or approximately 6-10 weeks if PVCu upgrade specified) Platinum Delivery Area
Royal Garden Rooms Approximately 6-10 weeks Royal Delivery Area
Regent Garden Rooms Approximately 6-10 weeks Regent Delivery Area
Humber Log Cabins Approximately 8-10 weeks for self build or approximately 10-12 weeks if installation specified Humber Delivery Area
Trentan Log Cabins Approximately 4-6 weeks for self build or approximately 6-8 weeks if installation specified. Note: add 2-4 weeks if the building is a special order item or made from 70mm logs Trentan Delivery Area
Lidget Concrete Garages Approximately 4 weeks Lidget Delivery Area
Capital Steel Buildings 10-12 weeks or + 2 weeks if delivery required on a smaller lorry Capital Delivery Area
SafeStore Gold Standard Secure Sheds Approximately 8 weeks SafeStore Delivery Area
Concrete Base Construction Approximately 6-8 weeks  
Timber Base Construction Approximately 2-4 weeks  
Concrete/Asbestos Building Removal Approximately 6-8 weeks  
Timber Building Removal Approximately 2-4 weeks  
Log Cabin Painting Approximately 3-4 weeks (subject to weather)  
Electrical Works Approximately 3-4 weeks  
These are estimated delivery times and presume that your base is in situ and all required admin has been completed (site survey forms returned, etc.) The quoted times cannot be guaranteed and may vary depending upon your exact location as well as the availability of staff and raw materials. The times quoted do not make allowance for any Christmas closedowns. Please check at time of ordering if timing is crucial. Please also be aware - if requesting additional services such as base construction or building removal - that these may be longer than the quoted delivery time for the building itself and this may impact the overall timeframe.
The price for the building includes free delivery and installation within the areas shown but this is dependant upon a suitable level and accessible base being available. If access is through the property or if there are height restrictions or tight corners which demand the panels be made in smaller sections then there will be an extra cost of £180. Likewise a charge of £180 is applicable if there is no direct parking outside the property eg if a third person has to be sent to move the vehicle to another location and sit with it whilst installation works are underway. Red route deliveries may not be possible so please inquire with office with photos etc. Royal Garden Rooms Due to the size of the components no deliveries will be possible where clear access is unavailable eg through house or under arch under 2.4m height.


Full Price List


Product Leaflet

FAQs for Garden Rooms

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  • What about planning permission?
    Unveiling Planning Permission: A Complete Guide for Garden Room Owners

    In the UK, a garden room can normally be up to 50% of the total land area surrounding the original property without requiring planning permission.

    However, planning permission is often a concern in the United Kingdom, as many people are unsure about the regulations for building a garden structure.

    In most cases, recent legislative changes mean that garden rooms do not require planning approval. You can view our full range of garden rooms for more options.

    Our online guide explains the process for obtaining planning permission for garden buildings. By the end, you will know whether you need planning clearance for your new project.

    A garden room provides valuable storage for gardening tools and equipment and offers a dedicated area to relax.

Why Choose Us

UK Manufactured


Choose garden buildings crafted with quality and care; Our Diamond, Platinum, Royal, Humber, and Sapphire buildings are proudly manufactured in the UK.

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Family Business
Since 1979

Close to five decades of experience and dedicated service from our family-run business, established in 1979.

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Fully Bespoke
Options

Get the exact garden building you envision with our fully bespoke options: Our Diamond, Platinum, Royal, Humber and Sapphire buildings can be tailored to your specific needs and style.

We are a family business Known for Quality - Loved for Design. Our ethos is 'NEVER make down to a price'. View our customer reviews on Trustpilot ★ (176) & WhiteSpark ★ (1,371) Google. VIEW at our showroom, near Guildford, Woking and Ripley in Surrey. (NEVER just rely on a brochure or website.)

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