hi i fitted a full house of oak windows,these were treated in the factory with a micro porous clear coating from spain that looked great and was guaranteed for i think 5 years
We have a 6m opening and decided to go for bifolds with BristolBifold. We fitted them 4 years ago and never had any problems. The company recommended aluminium Easifold, more glass less frame, so we have 5 leafs (1.2m each) all opening the same way. The door itself is on the one side and can be used as a 'proper door'.
The patio outside is at the same level as the kitchen with a slight fall away from the house. The builders were a bit skeptical and worried about water ingress and damp... so we did it anyway and installed acco drains along the length of the doors to ensure no water coming into the house. Again never had problems.
They're amazing and everybody loves them... Go For it
Yep we fitted Origin Bi-folds, aluminium in Ral grey, very good quality doors and echo comments on making sure you get fitters who have done these before, also really think about what they open out onto, we decided to get a deck built at same time so there is a flow from going from inside to outside, heres some pictures to the job we did, not a massive opening but comes into it's own in summer and makes a feature of the house especially as we have a west facing garden.
[url= https://www.flickr.com/photos/nashville/albums/72157648111767047 ]Pics of deck and bi-fold[/url]
