Apex Specification

Apex Duo offers a wonderful sense of light and space

Our Apex Duo range of garden buildings are based on the same specification as our luxurious Optima range but the apex roofline and extra windows create an incredibly light and airy space – ideal for a garden office, garden art studio, music room or even an alternative to a traditional conservatory.

Avoid planning constraints with our clever design

Garden Spaces has designed the Apex Duo range so as to avoid the need for an expensive and time-consuming planning application. Our dual pitched buildings are all below 4m tall and do not exceed an eaves height of 2.5m. This allows you to position them 2m from your garden boundary without needing planning permission.

The Apex Duo range offers:

Find out more information on Apex Duo prices or read what satisfied customers have to say about Garden Spaces.

Our Apex garden buildings have the following ‘luxury’ specification, as standard;

FOUNDATIONS: Galvanised steel pile foundations 865, 1000 or 1200mm depth depending on ground conditions.

MAIN STRUCTURE: Floor, wall and ceiling are built using precision engineered SIPs (structural insulated panels). Each panel consists of an insulating layer of rigid polyurethane between two layers of oriented strand board (OSB), with flanges that slot into the neighbouring panel, ensuring speedy construction with no cold bridging. SIPs provide immense structural rigidity, effectively combining several components of conventional building, such as joists, insulation, vapour barrier and air barrier. SIPs are exceptionally thermally efficient commanding very low u values.

DOORS, WINDOWS and SCREENS: An Apex studio will consist of a combination of the following: French doors (1.8m wide x 2.05m), fixed glazed screens (0.9m wide x 2.05m), top hung opening window (1.2m wide x 0.48m), all in powder coated aluminium (RAL7021ST) with high security locking to doors, key operated locks to windows and high performance double glazing (Argon gas filled, heat reflective, thermal insulating, UV protective & easy clean) with toughened glass.

ROOF CONSTRUCTION: SIPS dual pitched roof, covered in breathable waterproof membrane, battened and covered with metro tiles. Finished with a matching ridge and wooden soffit & barge boards (coated in Tikkurila ultra paint, to exactly match the aluminium frames). Hidden black plastic rainwater guttering to both sides.

EXTERNAL CLADDING: Western Red Cedar (low maintenance) external timber cladding with secret fixing.


Walls: Fully plastered finish & decorated interior (matt white) with 4″ painted skirting boards.

Floor: Solid engineered wooden flooring in a variety of finishes (30 year residential warranty), or with round stud rubber tile flooring (various colours).

FIXTURES & FITTINGS: 1 double dimmer light switch (brushed metal), 6-10 double power sockets (brushed metal), internal track lighting, 2 external lights with top and bottom outputs (brushed stainless or anthracite) and consumer unit with RCD.

Extras for your Apex building

Choose from our range of extras