Sandy
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Hi all,
I'm looking at buying a new build house and have been round a few developments nearby. I'm happy with the pro's & con's of new builds vs renovation of an existing building, but one thing that I keep noticing is the seemingly "leaky" patio windows.
All of the 6 houses that I've visited have bi-fold patio doors from either the kitchen and/or dining area to the outside. All the houses are built on concrete foundations and have solid flooring to the ground floor, so I was expecting all the walls and floors to be to the highest thermal efficiency rating and draft-proof. However, on all the bi-fold doors I've noticed that at the hinged sides/joints especially at the top, the draft and air flow is quite significant. Even though it's not windy outside, there is definitely a flow of cold air (for which naturally occurs between high and low pressure environments), but more than I think I'm happy with right now.
I know that some DG units have built in trickle vents for a minimal air flow and that in some properties a certain degree of air flow is needed to prevent mould spores etc, but is it normal for these bi-fold doors to "leak" at the joints between the doors at the top, especially in a new build?
Thanks
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