Please use these links for other sites of relevance to economically sustainable building systems and products.
- AECB (The Association For Environmentally Conscious Builders)
- Apollo (Energy Research)
- Aim Lower (Excel Warmcel Initiative)
- BBA (British Board Of Agrément)
- BRE (British Research Establishment)
- Byggma Masonite Beams UK (Engineered Timber I-Joists)
- Byggma Sweden Downloads (Technical PDFs)
- Cullen (Timber Connections)
- Excel Industries Ltd. (Warmcel and Soundcel Products)
- Excel Fibre Downloads (Building Solution PDFs)
- Glidevale (Vapour Control Membrane Products)
- PassivHaus UK (PassivHaus Principles)
- Planning Portal (UK Gov. Building Regulation Resource)
- Proctor Group (Frameshield and Roofshield Products)