Insulation trade jargon
- Cavity wall
Wall made up to two parallel masonry skins, with an air space between them to aid ventilation.
- External wall insulation (EWI)
A layer of insulation affixed to an external wall, covered with reinforcement then finished with a special form of render.
- Full-fill cavity
A wall cavity that has been completely filled with insulation.
- Glass wool insulation
Insulation made from layers of glass fibre, compressed together.
A material which helps prevent the transfer of heat from one object to another.
- Internal wall insulation (IWI)
A form of insulation where insulating boards are added to the interior of a wall.
Insulation around pipes to help regulate their temperature.
- Mineral wool insulation
A term for fibrous insulation made of materials such as stone or glass.
- Multifoil insulation
Insulation constructed from multiple layers of aluminium covered in plastic foil.
- Partial-fill cavity
A wall cavity that has not been entirely filled with insulation.
- Sheep wool insulation
Insulation made from sheep’s wool, which can be formed into different shapes depending on usage.
- Solid wall insulation (SWI)
Typically found in older houses built before the 1930s, homes with solid wall insulation lose more heat than those with cavity wall insulation.
- Stone wool insulation
Similar to glass wool insulation, but made of volcanic stone and able to withstand higher temperatures.
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