Archives: Glossary

An engineering analysis that tracks how heat and moisture move simultaneously through building walls, roofs, or floors

Heating that produces no emissions at the point of use, such as electric heat pumps or direct electric heating.

A term used when a building, process or activity produces no net carbon emissions. In homes, this usually involves reducing demand first, then using low-carbon heat and renewable energy.

Dividing a heating system into separate areas that can be controlled independently, improving comfort and efficiency.

Extruded polystyrene insulation. A rigid foam insulation often used where moisture resistance and compressive strength are needed.

The area around the window opening. Reveals are important because they can create thermal bridges if not insulated properly.

A staged improvement plan that considers insulation, heating, ventilation, moisture, comfort, cost and future works.

A retrofit method that considers the whole property rather than installing individual measures in isolation.

Ventilation that extracts moist air from bathrooms, shower rooms, kitchens and utility rooms.

Protecting a building from rain, wind and external moisture.