Around 15% of the total heat produced is lost through drafts. This represents an enormous amount of heat loss in a well-insulated home.
In a well-insulated build, air leakage can also condensate causing moisture within the walls during the winter.
Air leakage is driven by differing air pressures across the build’s envelope. This pressure builds from the combined effects of stack, external wind and mechanical ventilation systems.
Our Closed Panel timber frame system offers a continuous thermal envelope, sealing at:
- Overlaps
- Joints
- Penetrations
We also overlap and tape all window and door joints as part of our package.
An airtight build limits the mixing of indoor and outdoor air, reducing energy bills associated with heating and cooling.
- Dramatically Lower Energy Bills
- Improved Building Comfort
- Improved Energy Efficiency for Heat Recovery Ventilation Systems
- Improved Whole Building Energy-Efficiency
- Reduced Moisture Infiltration Levels

The Wooly Jumper Analogy