Flat Roof Condensation Risk Analysis

This type of roof has normally been used over small extensions to dwellings using timber joists and plywood deck.

Flat roof condensation risk analysis.

A flat roof should be designed to minimise condensation and a condensation risk analysis should be undertaken taking into account positioning of insulating materials vapour control layers ventilation thermal insulation and the choice of materials. Flat roofs are among the simplest construction elements that can feature in a building. Because the waterproofing layer constitutes a vapour control layer on the cold side of the insulation there is a high risk of harmful interstitial and surface condensation on the underside of the deck or the upper surface of the. For a flat roof construction be it a cold roof a warm roof or a warm inverted roof the calculation method for year round condensation risk set out in bs en iso 13788 known as the glaser method is almost always sufficient.

The analysis will determine the dew point and you can check where the condensation is happening in the report. This is something we do for all our new roofs as well as part of our design service. A warm roof features a structural deck vapour control layer insulation and waterproofing a tried and tested solution that the industry knows works. A condensation risk analysis is unable to allow for varying standards of workmanship but a high.

Get an interstitial condensation risk analysis carried out. Flat roof refurbishment best.