Archives: Glossary

A wall with two leaves, usually brick or blockwork, separated by a gap or cavity.

The physical parts of a building that separate the inside from the outside, including walls, floors, roofs, windows and doors.

A general term for a break or weakness in insulation, airtightness or damp protection.

The ability of a building material or construction to allow moisture vapour to pass through it. This is especially important in older and traditional buildings.

A membrane used in walls or roofs that helps protect against water while allowing water vapour to escape.

A government grant scheme that can help with the cost of installing eligible low-carbon heating systems such as heat pumps.

A heating appliance that heats water for radiators, underfloor heating or hot water cylinders. Common types include gas, oil, LPG and electric boilers.

A heating system that burns organic material, such as wood pellets or logs, to provide space heating and hot water.

A system that stores electricity, often from solar panels, so it can be used later in the home.

A boiler flue system that takes air from outside for combustion and removes exhaust gases safely.