UPVC French Doors - Installation Conundrum

info_addict

Going to have new UPVC French doors with a static arch over installed, to replace our existing timber ones and the installers have left us with a slight conundrum.

The existing timber frame is 90mm and the new UPVC is 70mm, therefore there is a 20mm difference.

The construction is both wall skins are aerated block, internally plastered with skirting boards and asphalt floor running up to the timber frame, externally it is rendered up to the frame. The rendering is not just normal, but is black and white with the black being made to resemble trees/ timber supports in a semi Tudor style (it looks better than it sounds and was a planning condition). I'll post a picture below

The installer at first said he would install up to the existing render as he did not want to disrupt/ repair it if possible. However this the leaves the problem of having to extend the skirting's internally, patch up 20mm of plaster (which could look awful when emulsioned) and the problem of how to fill the 20mm gap in the asphalt floor.

The other idea was then to fit the upvc frame to the plaster and cover the 20mm gap externally with UPVC trims. But I'm unsure what this would look like as one side would be white and the other black and the junction of the two could look awful. Also I'm not so certain about damp transmission behind them and bridging the cavity giving problems internally.

One thought I'd had was to possibly fit the frame to the render and fill the 20mm gap internally with a timber bead. But what about the floor - 20mm seems too narrow to make up with say a concrete mix in visqueen?

Surely this can't be a unique situation. So would be most grateful if anyone can recommend which solution is the better and how to achieve it

info_addict

Here's a link to the picture of the existing doors plus render

http://s1101.photobucket.com/albums/g426/infoaddict/French%20Doors/

info_addict

Ok, lots of views and no answers, so maybe I should make my request easier. We'll push the frame to the existing render, so the only thing I would like to know is how to make up the small gap in the asphalt floor

Anyone?

alleycat`

Unless i am misunderstanding your problem then to my mind, if you are left with a gap, around any of the frame, then the installer has measured it incorrectly.

They have not allowed for the difference in the existing product v's the new and therefore they need to order the correct sized french door.

Edit:- On another reading i suspect you mean the thickness front to back differs by 20mm and therefore there is an extra bit of exposed wall / floor that used to be covered by the old frame?

I'd personally go with this option:-

One thought I'd had was to possibly fit the frame to the render and fill the 20mm gap internally with a timber or UPVC bead.
The other alternative would be to do some sort of internal tile "entrance" ensemble for the floor.