Mon Prof Augmenté
Heat paths in a winter house
Age 17 · Daily Life
A house loses heat through its roof, walls, windows, doors and small gaps. Adding thick layers and seals slows that loss and keeps rooms warmer.
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In the picture
- Loft floor: thick yellow fibre slows heat rising from the rooms below.
- Wall cavity: pale foam board blocks heat passing through the outer wall.
- Window: two glass panes with a narrow air gap reduce heat escaping.
- Door edge: a soft strip closes the gap around the door frame.
- Threshold: moving air curls through the remaining gap under the door.
Examples
- A loft insulated with mineral wool stays warmer on frosty nights.
- A brush strip under a front door stops cold air blowing into a hallway.
Key takeaways
- Most heat escapes through the roof, walls and windows.
- Sealing gaps and adding insulation reduce heating needs.
Quiz: Heat paths in a winter house (Age 17)
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According to the card, where does most heat escape from a winter house?
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What does the insulation in a wall cavity do?
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What does the card say sealing gaps and adding insulation do?
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