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Calculation Tools and Links to Useful Websites

U Value Calculators and Water Efficiency Calculator and  links

Thermal Insulation Guidance

Approved Documents

Windows and Glazing (Thermal and Fire Glazing)

Loft Conversion Project Guide 2010

Lead Sheet Details

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

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