Glazed doors

Whilst a number of sites have met the airtightness criteria whilst using sliding doors, their use needs careful consideration as the airtightness often degrades faster than a standard door due to wear and tear. This is particularly important if the door is directly next to a living space where a draft could be felt. Tilt and slide doors are inherently more airtight, and may be cheaper than parallel slide versions.

Bi-fold or folding-sliding doors are generally expensive at the level of airtightness needed for a Passivhaus. In addition, it is very difficult to get as good installation psi-values as a normal window/door because of the frame configuration.

Consider using glazed doors as these have a better energy balance than solid doors.

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