External Colour Options

Every Garden building manufactured by ATT Fabrications uses an innovative composite cladding system that lifts the appearance of your garden room. In addition, this external cladding adds up to 10 years of guaranteed waterproof performance. The composite is made from a unique material that ensures its incredibly resilient yet very easy to install and maintain. Our range of composite cladding is available in six colour options.


This product has also been rigorously tested to ensure its durability. This includes fire performance testing in the UK to achieve BS EN 13501 by Exova Warringtonfire, a leading independent authority in fire testing.

Composite Garden Buildings

Technical Accreditation

  • BBA Certified
  • BS EN 13245-2:2008 PVC-UE profile for internal and external wall and ceiling finishes
  • ISO 2796 Dimensional stability
  • BS EN ISO 178 Flexural strength
  • BBA T1/05 Voids appearance and dimensional checks
  • BBA T1/04 Density
  • BS EN ISO 3451-1 Ash content
  • BBA T1/07 Fixings pull through strength
  • BS EN ISO 180 Izod impact strength
  • BBA T1/06 Hard body impact
  • BS EN ISO 2409 Cross cut test
  • BS EN 12608, clause 5.8.3 Colourfastness (resistance to UV ageing) – all primary colours for cladding boards and powder coated aluminium joints
  • BS EN 13245-2, Annex B and Annex C – Resistance to Impact after UV ageing

Composite Cladding Boards

  • Foamed composite base material with fire retardant
  • Co-extruded with a UV-stable colour cap with outstanding fade resistance
  • Minimal expansion/contraction
  • Impact tested to rigid profile standards
  • Skin – Acrylonitrile Styrene Acrylate, colour matched to RAL colour ranges
  • Highly weatherable premium embossed matt woodgrain finish
  • Dimensions: 5000mm (length) × 203mm (width) × 5mm (depth)
  • Weight: 5kg per board
  • Visible face when assembled: 167mm in height
  • A pack of 4 boards covers approx. 3.334m² (0.84m² each)
    (Coverage may differ due to the amount of apertures within the wall construction)

Fire Performance (2018)

  • Conforms to BS EN 13501-1 Fire Classification for Construction Products
  • BS EN 13245-2:2002 SBI Reaction to Fire – Single Burning Item – D-S3,d2
  • BS EN 11925-2:2010 Reaction to Fire – Single Flame Source


  • 1.5mm thick aluminium
  • 80-90 microns powder-coated + Qualicoat Seaside

Here are some examples of different colour options

Composite Garden Buildings
Composite Garden Buildings
Composite Garden Buildings
Composite Garden Buildings
Composite Garden Buildings
Composite Garden Buildings