U-value and condensation prediction software

DEWPOINT version 2.00
U-value calculation and condensation prediction software for walls, roofs and floors - using the Combined Method required by Parts L1 and L2.

Ł100.00

Download free demo version

This easy-to-use U-value program calculates the rate of heat loss through the construction in accordance with BS EN ISO 6946:1997 and the BRE Conventions for U-value calculations. It tests to see if condensation is likely to occur and if so, at which interfaces. The program now calculates the minimum mass of walls as required by the proposed new Part E - Resistance to the passage of sound. Solid floor and suspended floor calculations are in accordance with BS EN ISO 13370:1998 and the BRE Conventions

U-Value calculation uses the combined method for homogeneous and non-homogeneous layers as proposed for the latest revisions to Part L of the Building Regulations.
Condensation Calculation as BS 5250 1989
Easy to do the corrections for air-gaps and fastenings
Easy to calculate warm roofs
Easy to calculate basement walls
Easy to calculate air space resistances for high or low emissivity surfaces.
Easy to calculate under-floor resistance for suspended or solid floors as BS EN ISO 13370.
User can vary external and internal temperatures and humidity levels.
Includes database of commonly used materials and allows for user defined materials
Shows graph of vapour pressure
Shows amount of condensation over 60 day period
Shows details of vapour pressure calculation
Displays and prints complete calculations for U-value and condensation and prints condensation graph.

With the proposed improvement in insulation levels, it becomes more and more important for designers to be aware if their chosen form of construction is likely to have a condensation problem at some times of the year. Designers can not afford to ignore the risks associated with interstitial condensation.

Click here to request a U-value calculation (cost Ł20.00).

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