peekay Posted February 22 Share Posted February 22 Hi. Our timber frame building supplier is also providing a green oak framed structure for the front and rear of the house to support a veranda and a double height oak frames porch structure. We think that we have selected the windows and doors for all of the traditional openings in the house, Aluclad Timber with a sub 1.0 U Value. The rest of the house will be very well insulated. I haven't quite figured out how we are going to deal with the amount of glazing in the oak structure. Keeping it well sealed, airtight, with the right U value for the glazing whilst minimising heat transmition through the oak frame itself between the glazed panels which will be in effect uninsulated. Does anyone have any thoughts, or glazing suppliers that might be worth speaking to? There are several oak frame companies who look to also do glazing, but the ones that I've spoken to so far are not interested in working within someone else's oak frame Thanks Link to comment Share on other sites More sharing options...
Alan Ambrose Posted February 22 Share Posted February 22 No, I think you'll have to sort out the detail yourself. If I remember rightly, for that kind of detail, an Oakwrights frame I saw had the glazing unites mounted on the outside of the frame and then some full width oak 'trim' pieces mounted over that. Unless you looked very carefully, the effect was as though the glass was mounted in the 'frame'. I think the trim was held by counter-bored A4 SS screws but with little oak dowels over, so the whole thing looked through-dowelled. Having said that, I'm not sure why you couldn't mount the glazing units within the frame, allowing plenty of room for the frame to move, and then mount trim pieces inside and out over the units. Maybe you can mount one big triangle somehow in the apex to avoid dealing with the curved braces. Actually it's not clear which parts you're planning to glaze and which parts not. Link to comment Share on other sites More sharing options...
markc Posted February 22 Share Posted February 22 +1 to mounted on the outside, the oak frame will shrink and move so any glazing or frames in between need to allow for a fair amount of movement. i once saw glass sat in deep channels in an oak frame with gaskets that allowed movement but it looked bulky and ugly Link to comment Share on other sites More sharing options...
peekay Posted February 23 Author Share Posted February 23 Thanks. Keen to avoid any movement impacting sealing. I'm almost considering creating a glazed curtain wall behind the oak frame, to remove the oak from any windows. Link to comment Share on other sites More sharing options...
Alan Ambrose Posted February 23 Share Posted February 23 Ah yes, I saw an image - actually with glazing on the outside and it looked great - you just reminded me. 2 Link to comment Share on other sites More sharing options...
Temp Posted February 23 Share Posted February 23 Our Architect designed windows to sit on the inside the oak fame. They work, just, but I wouldn't do it again. Link to comment Share on other sites More sharing options...
Gus Potter Posted February 24 Share Posted February 24 On 22/02/2024 at 16:52, markc said: +1 to mounted on the outside, the oak frame will shrink and move so any glazing or frames in between need to allow for a fair amount of movement. i once saw glass sat in deep channels in an oak frame with gaskets that allowed movement but it looked bulky and ugly Oak shinks less than soft wood. Thus if you have an oak frame it is not "scary" ! All you need to do is identify where the shrinkage will take place and detail for that. Link to comment Share on other sites More sharing options...
BadgerBadger Posted February 24 Share Posted February 24 We're doing something very similar at the moment with oak direct glazing an entrance. We had some quotes and it was very expensive, but in principle it's quite straightforward, so I think a lot of the expense is the "risk factor" of call backs, poor installation etc. We dug into the details of how to do it and have essentially shouldered the risk ourselves with some help/advice from a local oak framer. We have tightened up the airtightness etc where we can and going for triple glazed units, but also accepting this may not be the most efficient part of build. Hopefully it will absolutely fine but it's not in yet... Link to comment Share on other sites More sharing options...
Rishard Posted February 24 Share Posted February 24 +1 to external glazing. I’ve built several oak frames this way. It’s a bit of a hybrid as the cover boards which sandwich the glass to the oak frame are separate pieces of oak which on a traditional ‘oak frame’ is a bit false but I’ve not seen a better system out there. If the cover boards are rough sawn then it looks best. We use expanding foam tapes to seal the frame to the glass and glass to the cover boards. These are weatherproof and adjust with the shrinkage of the oak. Oak frames are harder to airtightness seal and have some fairly substantial thermal bridges but it can be done. Oakwrights system is good. Link to comment Share on other sites More sharing options...
GaryChaplin Posted February 26 Share Posted February 26 The system to use is called "direct glazing", "applied glazing", "face glazing" or "curtain walling". Pick one! https://sessile-oak.co.uk/oakFrames/glazing Link to comment Share on other sites More sharing options...
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