Concept

The entry door of a house is a very strong selling point and, like windows, strongly influences how a homeowner feels about his or her house. However, the entrance is also an extremely weak point in the envelope of highly insulated buildings. A conventional door can lose as much heat as 20 m2 of a well-insulated wall. Furthermore, given the importance of the air tightness of the envelope, the door is a major leakage source since gaskets and weather-stripping are subject to extensive wear.

This heat loss and leakage by the entry can be minimized, first, by where it is located. A good entry solution is a vestibule or air lock. Finally, high-performance certified doors are now on the market.

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