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Code 4's Eco Timberframe Superstructure- an award winning CSH & PassivHaus construction 


Code 4's Eco Superstructure Is a high quality, engineered construction system. Our wall, floor and room in roof solutions have been installed in buildings achieving Code for Sustainable Homes level 3, 4 and 5 as well as  PassivHaus Standards and PassivHaus Certification. Code 4 believe the 'Fabric First' approach is the right and responsible way forward.


Co ode 4 EcSuperstructure consist of the following:

I-Frame wall structure - Consists of i-beam Panels, pre-sized PIR Insulation and Reflective Breather vapour control layer Membranes

Floor Cassettes- Consists of i-beam Joists, WeatherDek Flooring, pre-drilled M&E option 

Roof Cassettes - Consist of i-beamed Rafter Cassettes, Glulam Purlins, upper warm roof storage area, IFrame Spandrels, PIR Insulation, Reflective vapour control layer.


We can provide our clients with SAP ratings, Airtightness testing & acoustic tests  - to find out more please click on the images below.


If you would like Code 4 to provide a free competitive quote for your development, please forward drawings/sketches to:

Contact Details:

Tel - 01905 457386

Mob - 07590894716


Email -