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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
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Housing - New Build: Folding Sliding Doors - drafty or what?

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  1.  
    • CommentAuthorStuartB
    • CommentTimeNov 1st 2007
     
    I would like to incorporate wooden folding sliding doors into a new build property to open up the kitchen/dining area into the garden during summer months. However I am a bit concerned that in the winter there will be a lot of heat loss from this style of door. Does anyone have experience of how these will perform in an exposed rural site? And of any suppliers in Scotland?

    Cheers
  2.  
    Have just installed some in an extension. I haven't noticed them being drafty or been told that they are by the occupant (my mother). They did seem to be well draft stripped. The ones we got were at the budget end of the market (£1500 ish for 8ft width) from Magnet (Wickes also sell them). They are just standard double glazed and were available in douglas fir or laminated oak with a 3mm veneer. I'm sure there are much better ones out there for bigger budgets. They are a very appealing way of connecting the house and the garden. I'm hoping to claw some of the heat losses back with some passive solar gain in the winter as they are facing due south in this instance.
    • CommentAuthorStuartB
    • CommentTimeNov 1st 2007
     
    Thanks Chris,

    Would you say the heat loss from this type of door is greater than standard french doors?
    • CommentAuthortony
    • CommentTimeNov 1st 2007
     
    About the same for the exact same area of glass

    Lots of glass area means lots of heat loss, simple as that
  5.  
    I don't see why the heat loss due to drafts should be any worse for a folding set of doors than for normal french doors. They seem very well draft proofed to me.
    •  
      CommentAuthorfostertom
    • CommentTimeNov 2nd 2007
     
    Sunflex/I-D, Solaflex are the (German) market leaders - only 2G tho'
    • CommentAuthorBluemoon
    • CommentTimeNov 4th 2007
     
    As part of my proposed log home, I am am thinking of folding sliding doors for internal partition to divide the Great Room into two parts, as well as for the balcony. There are some in a chapel near me, about 12' high and 25' between walls.(But they're still using them)
    • CommentAuthorvflatman
    • CommentTimeFeb 18th 2015
     
    Can I add this into the conversation about bi-fold doors....

    I am the UK agent for Lacuna bi-fold doors, which are manufactured in Denmark. They are relatively new on the UK market and they have following specs:

    - Danish design / German engineering

    - Made to measure

    - 56mm per door frame giving a maximum frame to frame width of 117mm

    - Top hung design uses no guide rail and makes threshold cleaning easy

    - Low u-values; 1.1 - 0.7 W/m²K

    - Air permeability EN 12207 - Class 4 at +/-600 Pa

    - Watertightness EN 12208 - Class E1200

    - Heat treated beech (German)- with durability equal to teak - Class 1

    - No need for repainting for 25-50 years in normal conditions

    - Ironmongery of the highest marine grade acid proof stainless steel (316-A4).

    - Lead time usually between 6-7 weeks


    Happy to provide further information as required.
    • CommentAuthordb8000
    • CommentTimeFeb 19th 2015
     
    Blimey. You're inserting something into the conversation from over 7 years ago! I think that's called thread necromancy.

    And the "something" (given it's identical to another of your posts yesterday) looks rather like advertising now.

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