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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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    • CommentAuthorAMG
    • CommentTimeMay 3rd 2014
    Afternoon everyone,

    I'm struggling to work out what to do with our new build. It's open plan and has two large openings either end of the house measuring 2.56 by 2.56m and 2.6 by 2.56m. I thought about inserting 2 sets of bifold doors. I have not been able to find sliding doors with a height of 2.56m
    We are also having MVHR and I think from reading posts that bifold doors will leak air. How much of a problem would this? We have EWI on the walls (160 EPS).

    Can anyone suggest a good set of bifold doors or sliding doors. Sunflex have been recommended.
    FOr the windows of the house we were thinking of going or alu clad velfac windows.

    Appreciate your thoughts.
    • CommentAuthorjamesingram
    • CommentTimeMay 3rd 2014 edited
    Someone will make them if your pockets are deep enough. ( try http://www.northoltglass.co.uk/projects.asp they did the monster one on grand designs ) 2.6 isn't very big.
    Schuco , aliplast etc. lots of alli profiles out there that can be made to suit.
    Same with wood options . Have you tried Greensteps.co.uk
    • CommentAuthorwoodgnome
    • CommentTimeMay 3rd 2014
    James. Have you used Greensteps before as im thinking of using them for my doors and windows as they gave me a good quote.
    • CommentAuthorGotanewlife
    • CommentTimeMay 3rd 2014 edited
    • CommentAuthorowlman
    • CommentTimeMay 3rd 2014
    Posted By: woodgnomeJames. Have you used Greensteps before as im thinking of using them for my doors and windows as they gave me a good quote.

    No . Had a few quotes. Others here have and I believe they were happy
    I'm having the same issue atm, limited by the fact that there's only a few available in Scotland to look at. I am *probably* going for Solarlux SL81 (all ali) or SL97 (timber/alu). I had heard that Sunflex were comparable, but there's no retailer up here, unfortunately.
    • CommentAuthordaserra
    • CommentTimeMay 7th 2014
    I had fitted 2 sets of Sunflex this year. Awful sealing around the edges, actually let rain in.
    daserra, that's worrying.

    Have you seen any that you would recommend? Or did I misunderstand your post and you had them fitted into your own house?
    • CommentAuthordaserra
    • CommentTimeMay 7th 2014
    They were in 2 different clients places, the worst was the non-double glazed frameless type (8mm shop glass). The double glazed ones weren't as bad but I won't be fitting them again. What we've been doing since is using normal sliding patio windows with a frame much larger than the opening. The frame is fixed to the inside against the wall and then we build another stud partiton in front of it, so in effect you have patio doors that slide into the reveal. Worked very nice.
    • CommentAuthorArchmoco
    • CommentTimeJun 3rd 2014

    Have you looked at Internorm they will do a sliding door either timber aluclad or upvc aluclad. I've the upvc aluclad with triple glazing, my opening is 4.2m wide with a 'door' of 2.1 m and very impressed with the system,
    • CommentAuthorAMG
    • CommentTimeJun 3rd 2014
    Hi Archmoco and everyone else,

    Thank you for your responses. I was really keen for bifolds but after a fair amount if consideration I opted for velfac sliding doors. There maximum height is 2450 so I am short by about 7cm. I'm not too worried as I'll fill the void with insulation. The external is cedar cladding so it should be fairly straightforward to make the opening smaller.

    The main factors that swayed me were as follows
    1 cost - the bifolds were more than double the price
    2.the sliding doors are easier to fit
    4.better seals esp with regards air permeability
    5.we have a step down into the garden so are not able to have a flush threshold.
    3.simpler visual appearance given size of opening.

    I'm hoping I have made the right decision. If the opening was bigger like yours, then opening the whole reveal would certainly be dramatic.
    Now need to figure out the specifics of filling the reveal gap to ensure it's air tight.
    Archmodo - I have been round the houses with this problem and have come back to Internorm lift and slides.

    The rest of our windows are from them - would you mind sharing (or whispering) roughly how much yours were? I'm dreading going back to my local Internorm dealer, they are persistent to say the least and I don't want to go there if they are going to be way out of budget. Is it the H330 you have?

    • CommentAuthorArchmoco
    • CommentTimeJun 6th 2014 edited

    I think Mine was around £6.5k, it was a fixed price for all the windows (15k), but very happy with the windows and doors and they seem to be airtight, certainly during the blower test there was no indication of air leakage. The guys are back next week to do the flashings and cills (and remove the tape)
    • CommentAuthorArchmoco
    • CommentTimeJun 6th 2014
    The guys have also to change the handle
    Archmoco, is that house on the Belfast side of Saintfield by any chance? If so it always catches my eye as I'm driving past:-)
    • CommentAuthorArchmoco
    • CommentTimeJun 7th 2014

    Yes, we had been in since Christmas but still a lot to do!
    Archmodo, thanks very much for your photos and pricing info regarding the Internorm. I went back to the dealer today and was very impressed by the engineering and general handling of the doors.

    How tall are your doors? We are looking at an oversize (height-wise) slider but can't work out if it is an indulgence or actually a practical option.
    • CommentAuthorArchmoco
    • CommentTimeJun 13th 2014
    Underside of concrete heads/lintels for all the windows and doors was set at the standard 2100mm. There would be some weight in our door, I don't know if I would want to go any bigger. The rule of thumb is to keep glazing size to 2x2m anything larger and you start paying big money.
    • CommentAuthorMikeRumney
    • CommentTimeJun 14th 2014
    Small practical note ...
    The design of what you chosse might deal with this but:
    if either of your two walls with the openings take a strong hit from wind, consider putting the opening section on the outside. I've had to retrofit a vertical sealing strip where the two sections meet in the middle when the slider is closed.
    For both practical and aesthetic reasons we have our slider on the inside.
    When the gale blows it pushes the moving section away from the fixed section.
    It's only 2mm maybe but thats enough to let the gale/cold in!
    (BTW its "lift & Slide" 3G wood 2700mm by 2100mm and was £3000 from Albo)
    • CommentAuthorwoodgnome
    • CommentTimeJun 14th 2014
    Mike did you get any joy from Albo regarding the draught problem?
    • CommentAuthorMikeRumney
    • CommentTimeJun 14th 2014
    <blockquote><cite>Posted By: woodgnome</cite>Mike did you get any joy from Albo regarding the draught problem?</blockquote>

    No, but I probably didn't try that hard as,

    a) I saw it as poor design on my part as opposed to a fault with the door.
    b) because I was distracted by the fall-out associated with breaking my wrist.
    c) it was potentially going to take up a lot of time I didn't have.
    d) I thought of a way to fix it ...

    They're the single most pricey item on the whole build.
    I could have done with a more local, and therefore more accessible, solution (not least to keep the fuel-miles down) but at the time I couldn't find one that wasn't even pricier.
    Going by a couple of threads I expect if I looked around now there would be one.
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