Glossary

Perplexed by all this talk of u-values and blower door tests? Our sustainable building glossary will help you get to grips with the key terminology.

Search for glossary terms (regular expression allowed)
Term Definition
Joist

A joist is one of the horizontal construction elements, typically made of timber, that support a ceiling, roof, or a floor. Insulation materials are often installed between the joists, which run parallel to each other.