joeboy

Thank you, a friend speaks well of them. I have just agreed a contract with another local firm. Thank you though. I am going upvc as I'm at the less maintenance is better end of my life. Wondering what folk use to create a thermal break between the building concrete cill and the upvc cill that the 3g unit and frame will rest on? Thanks

Hi all, I have a decent quote at a good Uw value with a few more quotes to come in. The installers are willing to work with me so that I can do remedial works as they work through the property then circle back and complete internal finish. With this in mind I have noted from the forum Illbruck FM310 low expansion foam for external sealing of window and Siga Corvum 12/48 tape for the sealing off of internal frame edge pre finish. The house is not airtight to any standard beyond my own works across the years but i'd like to maximise the thermal impact + of retro fitting these 3g units and zero 90 frames. Have any of you did any works to thermally isolate the frames externally from the building opening (beyond low expansion foam)? Is it worth specifying a specific UPVC cill or isolating it in some way? Any particular brand of thermal reveal for the internal finish? Any advice much appreciated, apologies if I mismatch terms.

Thanks, so far we've been.offered 1.2u falling to 0.6u spec depending. I think Ug but I've learned now to ask for Uw. It's only the first quote in so far. I have about 6 lines in the water at the moment. Interested to see who is most forthcoming with detail in reply without request. It's been a weird few days dealing with the glazing folk. Some good, some bad. Tbh, they don't seem to have changed much since the 80's. Slightly better tech patter. I do like the idea of humidity reactive gear. Could have a trickle vent in kitchen, then humidstat fan in each of ensuite & main bathroom. Thanks again for that

That is a very good point on the dehumidifiers. I didn't know there were humidity sensing trickle vents and fans. That's a bit of an eye opener. A good one though. Did you run without these units at all and see a difference when added? You are the third person in two days to say about the thermal efficiency of high thermal efficiency 2g. Food for thought. Thank you.

Thank you both. Pertinent points emerge from the mist of my confusion. Ug good Uw better Frame spec matters as does the x sectional build to maximise air pockets. (The x seciton I have seen was a complex beastie with lots going on. How are the windows mounted? How are the windows internally and externally sealed? Hinges matter as does the size of opener, less is better but escape path is critical? Window builder through to installer is the preferred route to avoid any "he said, she said". (That would be horrible). Is there a spec to look for in Uw & Ug for thermal efficiency? No point my paying for 0.5 Uw if the house can't keep up? Wondering on opinions/experience on South facing v's North? Does it affect the 3g unit build? Is there a way to let more heat through on South side and block more exiting on the North in the glazing unit build? Ventilation is critical. We have not fitted MHVR but do run dehumidifiers in Winter and we do ventilate. No mould or health issues. Thank you very much for your replies, a hit list begins to form!

First enquiry post. We are new to triple glazing and are surprised at the complexity of choice. We have been on a renewable energy journey for a number of years with much gap sealing and a lot of insulation added to the home. In no way though would I claim any sort of air tightness value but it is significantly better than we started with. We are looking to replace our 2g (which was the cheap stuff we could afford then) with 3g and would like any advice on how high to aim. Bearing in mind it's a mid 80's Barrett bungalow. My understanding is that all the windows should be taped internally and gaps filled externally with low expansion foam to reduce thermal bridging and airflow? Anything else to look out for or request during installation? Advice much appreciated. Windows are to be upvc 3g argon filled with toughened glass. Quote process begins this afternoon. Thanks.

Good morning, Long time reader of the forum across the years. Time to contribute! We are in the NE of Scotland in a multiple times extended bungalow. Continuing on an RE path with home improvements. We already have a large solar array (15kW).and battery store (40kW). Looking to add triple glazing and an ashp to the existing CH wet system. Cheers!