Penthouse Classic (Made to Measure)

Contact Us to find out more about a custom room on 01244 552 813 or Please click here


No problem - we can make to measure



The model shown above is just an example of a bespoke, made to measure design for a previous client.  

Please note - Our made to measure service is available for all of our design styles

Need something special?  With our bespoke Lifestyle range you can specify exactly what you want.  Granite, Slate, Stone, Brick?  Stainless Steel, Glass, Fully fitted Interiors?  Talk to us as we will be pleased to help.

PRICE ON APPLICATION - but standard Specification includes:

  • EXTERNAL SIZE - Made to Measure
  • INTERNAL SIZE - Made to Measure
  • HEIGHT - This building can comply with the 2.5m height limit for Permitted Development under current Planning Regulations, more HERE
  • WALLS - Fully Insulated & Ventilated Cavity Walls comprising: Overall thickness 213mm (approx); 19mm Cedar or Composite Cladding; 50mm Ventilated Cavity on treated Double Battens (where required); Du-Pont Tyvek or similar Foil Breather Membrane; 9mm OSB3 Exterior Grade Sheathing; 96mm x 47mm (approx) treated C16 structural grade frames; 100mm PIR foiled foam frame fill; Vapour Control Membrane; 37mm Insulated Plasterboard.
  • CLADDING - Our standard supply is a wood composite cladding material with a manufacturers 25 year guarantee offering ZERO maintenance (see FAQs for explanation).  Cedar cladding is offered as a no cost option if preferred, please tick to select your preference during the Checkout process.
  • FLOOR - Fully Insulated Floors comprising: (minimum) 125mm treated Floor Joists; Double Joist Perimeter; Adjustable Galvanised Legs; 100mm PIR Foam Insulation; Damp Control Membrane; 22mm Industrial Grade Laminated and Moisture Resistant Floor Boards
  • ROOF - Flat or Pitched to customer requirements
  • GUTTERS - Black plastic gutters and downspouts as required - connection to drainage or water butt by others (water butts supplied and connected if required at extra cost)
  • DECKING -  Made to Measure Decking comprising: (minimum) 125mm treated Floor Joists; Zero maintenance Composite non-slip Decking Boards; stainless steel fixings.
  • PATIO DOORS - Made to Measure but typically: Double Glazed twin or single doors (Sliding Doors cost option) in Grey (other colours no cost option) UPVC (aluminium available as a cost option); Multipoint security locking system; Pilkington's 'K' Glass as standard.
  • WINDOWS - Made to Measure but typically: Double Glazed in Grey (other colours no cost option) UPVC (aluminium available as a cost option).  All windows open for ventilation. Keyed security locks fitted; Pilkington's 'K' Glass as standard.
  • FIXINGS - All assembled with stainless steel exterior fixings.
  • ELECTRICAL - To Customer Specification but typically: 4 Gang PCB protected Consumer Unit; 6 Ceiling Spotlights (8-20 on larger buildings); min 4 Double Switched Sockets; interior Light Switch all fascias in brushed aluminium; 2KW Electric Convector Heater with Timer and Thermostat - connection of Garden Building to incoming supply by others or priced upon application
  • PRESSURE TREATED TIMBER - All Structural Floor and Wall Timbers pressure preservative treated for minimum 25 year life expectancy
  • FULLY ASSEMBLED - Your Garden Office will arrive with our trained installers ready for full assembly by us on our own concrete pile foundations. Please see the Base & Requirements tab for our ground condition requirements. Click HERE for a list of areas that incur additional delivery charges.


  • Purchase Options
  • Additional Info
  • Base Recommendations
  • Delivery

FULLY ASSEMBLED OPTION - Your Garden Building will arrive at your chosen address with our trained installers. We will provide specialist pile foundations and will fully assemble your building, including internal plaster skim and electrical wiring to our RCD electrical consumer unit. Please note, we will not provide any interior painting nor an external electrical supply from your house to your new Garden Building unless contracted to do so separately. Click HERE for a list of areas which incur extra delivery charges.


In order to ensure that your RUBICON™Garden Building is installed in the correct manner it is important that the following Requirements are understood:

1) Ground conditions must be suitable for the installation of concrete pile foundations or cast in-situ concrete pads unless a suitable existing concrete slab is already in place. We can advise on this during our FREE site survey

2) Our quoted price for your RUBICON™Garden Room assumes that the area where the Building is to be fitted is reasonably flat. Although the feet of the building are adjustable by up to 18" there are limits which can incur additional costs. We will identify if this is the case during our FREE Site Survey.

3) From a Planning Permission perspective, most of our buildings can be fitted right up against your neighbouring walls or fences. However, we normally require a minimum of 600mm (2') clearance to three sides (unless you have permission from your neighbour for us to access via their land) and usually 2m to the front elevation of the building to facilitate access for assembly, and to allow us to take the necessary Health and Safety precautions on behalf of our fitting teams.

4) Some components of our buildings are very large and heavy, such as the panel assemblies which can be up to 10' x 4' and 200mm thick weighing in excess of 60 kilos. Consequently, it is important that access to site is unencumbered and free of obstruction. Please note: Access to site via an internal route through an existing building is not usually practical or permissible - check with us first.

5) Vehicular access to the front of the property at which the Garden Room is to be installed needs to be suitable for a large delivery vehicle, with adequate space for unloading large quantities of material. Talk to us if you think this may be a problem - we can usually find a solution...!

6) The area where your Garden Room is to be assembled should not be overgrown by hedges, trees, vegitation or other material obstructions or debris such that would impede our installation team, cause them potential physical harm (hawthorn hedges etc), or undue delays in having to clear the site and surrounding area prior to starting work.

7) You will need to ensure that there are no overhead or underground services such as electricity, water, telephone, gas or drainage which will impair our ability to install your Garden Room on the proposed site. Again, we can help to confirm this during our FREE Site Survey visit.

8) We will require access to a suitable 240v 50Hz mains electricity supply and mains running water for our staff during normal working hours, typically from 8:00am to 6:00pm each working day.

We now only supply/install within approx 60miles radius of our Deeside base (CH5)

Delivery is FREE within this area

Specifically, we NO LONGER supply to the following areas due to the distances and logistics involved:

All areas outside of the UK mainland


Greater London

South & SE beyond London 

South beyond Stoke on Trent


North beyond Preston and Manchester

Hastings, Dover etc


Norfolk Broads

Wiltshire & SW




Scotland & Isles

The Borders beyond Shrewsbury

mid Wales beyond Welshpool

South Wales

Northern Ireland