Condensation Risk Analysis

Bespoke Condensation Risk Modelling & Analysis

We can provide condensation risk analysis to BR443 for both Surface and Interstitial condensation. These are usually required where their is a perceived risk based on the proposed construction specification.

Risks are usual associated where breaks in the continuity of insulation (cold spots / thermal bridges) occur, complex material relationships, poor detailing and specialist sheet and rainscreen cladding systems.

What is Surface Condensation?

Surface condensation usually occurs when insulation is reduced or lacking in part of a building fabric element such as a wall, floor or roof. This cold spot within the construction can allow for the rapid change in temperature of usually a highly conductive material such as a steel beam which come into contact with warm air. This leads to the production of moisture vapour condensing which forms as water droplets known as condensation on a cold surface.

Common areas include:-

Steel framed buildings
Timber framed buildings
Warm roofs
Flat roofs
Basements walls

What is Interstitial Condensation?

Interstitial condensation usually occurs when water vapour builds up in a building fabric element usually via design has no prevention or ability to self evaporate. This leads to the production of moisture vapour condensing which forms as water droplets known as condensation on a cold surface.

Common areas include:-

Steel framed buildings
Timber framed buildings
Warm roofs
Flat roofs
Basements walls

Don't forget! Use our New Build Pack service to save money and hassle by combining your SAP, EPC, Air Permeability Testing, Extract Ventilation Testing, Water Efficiency Calculation and Acoustic Testing (if applicable) all together.