U Value and Condensation Risk Data Form

Name

Address

Postcode

Company name

Telephone

Mobile

email

Project Details

Project Name / Reference / Address

Internal Conditions-Building Use (please select one type only)

Construction Element (please select one type only)

Rafter width mm

Rafter depth mm

Rafter spacing mm centres

Roof pitch degrees

Construction (please enter construction layers starting with the outside)

Example materials: Tiles/slates, Built up roofing, Evalon, Asphalt, Battens, Counter battens, Renotherm, Cavity > 24mm, Cavity < 24mm, Loft void, Plyboard, Breather membrane (Tyvek), Sarking felt, Fibreglass, Rockwool, Celotex, Expanded polystyrene, Blockwork, Brickwork, Polythene (500 or 1000 Gauge), Concrete, Steel, Lead, Plasterboard, Plaster, Aluminium foil, Timber

Item Thickness (mm)

Item Thickness (mm)

Item Thickness (mm)

Item Thickness (mm)

Item Thickness (mm)

Item Thickness (mm)

Item Thickness (mm)

Condensation risk analyses are carried out using the method in BS EN ISO 13788 2002 (and BS5250 Appendix D). U-values are calculated taking into account repeating thermal bridges using the methods in ISO 6946 (walls and roofs) and ISO 13370 (ground floors) to help you demonstrate compliance with the Building Regulations and Building Standards.