U Value Calculators and Water Efficiency Calculator and links
water efficiency calculator tool (Excel Spreadsheet, 0.71 Mb) Excel spreadsheet that allows calculation to demonstrate water efficiency in relation to Approved Document G 2009.
Area Weighted U Value Calculator 2010 (Excel Spreadsheet, 0.11 Mb) Excel spreadsheet that allows calculations to demonstrate a more flexible design particularly useful for extension with excessive glazing.
Concrete Block Association has a simple to use calculator for masonry walls.
Celotex U have an easy to use value calculator for various construction types.
Thermal Insulation Guidance
- PROCTOR insulation product details and installation guides
- ECOTHERM insulation product details and installation guides
- XTRATHERM insulation product details and installation guides
- CELOTEX insulation product details and installation guides
- QUINN insulation product details and installation guides
- JABLITE insulation product details and installation guides
- KNAUF insulation product details and installation guides
- ROCKWOOL insulation product details and installation guides
- WEB DYNAMICS multi foil insulation
- YBS INSULATION multi foil insulation
- RECTICEL insulation boards
- Download the approved documents from the planning portal free of charge
Accredited construction details for Approved Document Land thermal bridges are also available from the Planning Portal.
Windows and Glazing (Thermal and Fire Glazing)
- For details of windows rated from A-G and details of the companies who provide them visit the website of the British Federation Rating Council (BFRC) - the UK's national system for rating Energy Efficient Windows.
- The Glass and Glazing Federation (GGF) has produced a useful guide to Fire Resistant Glazing
Loft Conversion Project Guide 2010
- The Construction Products Association has produced a Loft Conversion Project Guide. A very comprehensive and easy to use document which can be download as a free PDF copy or purchased in hard copy.
Lead Sheet Details
- A Technical Information Form is available from the Lead Development Association website.
Sewers and Building Work (Build Over Agreements)
- Visit Severn Trent Water for a guide to building over sewers includes a download area of application forms and guidance.
Legal Contracts for Domestic Extensions
- The Joint Contracts Tribunal (JCT) provides ready-made building contracts for homeowners which can be downloaded or filled in online and printed off at home.
- Download FREE Federation of Master Builders FMB Plain English Contracts.
Last updated: Thu 20th August, 2015 @ 10:36