Condensation control in dwellings
Condensation in dwellings occurs when warm moist internal air comes into contact with cold inside surfaces, or with cold air or surfaces within the structure.
With improved thermal performance and air tightness in new and existing buildings, the risk of damage from condensation has increased. Most surface condensation is largely caused by the behaviour of occupants, such as breathing, cooking and bathing - all emitting moisture. However, the designer can influence these effects by specifying suitable controls (such as mechanical ventilators) and reducing thermal bridging to enable the occupant to limit the incidence of surface condensation.
This Wood Information Sheet (WIS) explains the difference between surface and interstitial condensation and describes design measures to reduce the incidence of condensation.
- Surface condensation
- Interstitial condensation
- Factors that affect condensation
- Control of condensation
- Design measures to reduce condensation
- Properties, units and definitions related to water vapour in air and in materials
Sole plates are a vital element in a timber framed building. Their installation has a direct effect on the building's service life, line, level and plumb, and contributes to the speed of construction.
This Wood Information Sheet provides advice on getting the installation of sole plates right first...
Research has demonstrated that leaving a party wall cavity clear allows it to act like a chimney, pulling warm air upwards towards a cold roof space, with colder air moving in behind it. This cycle of air movement affects the thermal performance of buildings that have party wall cavities, even...
Timber frame construction of some description is a method which has been around for millennia; however over time it has become a tremendously refined practice to the point that - as buildings of up to six storeys become widely used in England and Wales - timber frame constructions of today...