Redbeard Posted Monday at 13:53 Posted Monday at 13:53 OK, I have only used their all-wood offerings but I really rate Green Building Store (21 Degrees) windows. Their in-house fitters were really good too, though come 2021/22 they could only offer fitting in certain areas. I gather they have more sub-contract fitters now. Yes, according to the dictionary definition they are not specialists, but they have a specialist window section. I do not regard them as any less 'specialist' than those who concentrate on windows only.
Alan Ambrose Posted Monday at 14:13 Posted Monday at 14:13 I guess they're all just middlemen for a small number of factories. I wonder to what extent they add some design value and/or which have their own aluminium profiles. @craig - any thoughts?
craig Posted Monday at 14:16 Posted Monday at 14:16 We’re all middlemen for the main manufacturer, it boils down to how much the manufacturer supports the supplier or how much the supplier is interested in supporting the installers/end client. 1
Alan Ambrose Posted Monday at 14:24 Posted Monday at 14:24 Thanks, do, say, the companies that supply frames with dual weather seals have their own aluminium profile or are they just selecting a 'higher quality' profile from the factory? Are the middlemen adding their own window handles etc? Presumably there are at least a couple of factories, no?
marmic Posted Monday at 14:42 Posted Monday at 14:42 we're not as yet in contract but we will almost certainly be using Nordica - who use Viking and Slowinscy. We have decided on the latter. Transparency with regard to the manufacturter / actual product* They will be providing a deeper base to window to ensure adequate fall on extended sill. Extract from their proposals: 1* Frame packer 30x105mm (A30*105_40_M) Length 700 mm, color: Lacquer Regarding fall on sill there's nothing in building regs! Which are supposedly there to protect us - there is lots of good stuff in there, don't get me wrong, but there is lots of daft stuff (some ridiculous) in there too as we all know. But there are simple things missing too which is just as daft! Whilst talking to numerous people/companies i discovered not unusual for extended sills to end up flat / almost flat. Which in theory complies with regs - because there isn't one! Wouldn't suprise me if some end up running backwards perhaps!! * many UK suppliers rebrand and have found resistance by some in providing info and insist they are the manufacturer when they clearly aren't, but why I have no idea as this is not a problem! (I come accross this regularly in my day job, on the other side of the fence, with competitors doing the same and buying whatever they feel like to suit their margins!). With regard to who 21deg use I have no idea as didn't get very far - they didn't want to talk and didn't even bother to respond, and IMHO no point chasing people like that as my assumption is it's not going to get any better! Assume supply only too? Their other departments were somewhat mixed, some ok, but needless to say we won't be buying anything from them! Originally thought it could be a one stop shop and they'd be super keen with potentially one point of contact to reduce my stress levels! But alas not... ASHP/MVHR/PV we're procuring through heating engineer. Compac foam easier through UK distributor! 1
zzPaulzz Posted Monday at 21:36 Posted Monday at 21:36 7 hours ago, Alan Ambrose said: re: 21 degrees - any one a bit put off by the fact that they don't look like window specialists? That is, they do heat pumps, PV, MVHR etc. Impressed that they supply PHPP numbers though. 21degrees have been buying up smaller companies and putting them under one roof. I’d say they are struggling to integrate them into a true one stop shop. I am using them for windows and doors (Aluclad wood) and MVHR.
marmic Posted Tuesday at 10:48 Posted Tuesday at 10:48 moving on from the supply chain does anyone have a detail please for the reveals externally? We have flat boards with windows set back midspan of insulation and doors futher back on the structural stud with compacfoam at base. Battens and timber cladding to outside. Windows and doors fixed back to internal 140mm structural studs and sealed direct to boards - or am i missing something here? should they be lined first with membrane??? I don't think so but seems to a detail thats top secret! Timber frame company leaving openings covered by membrane to avoid ingress of rain whilst waiting for windows, so this won't be opened up until window fitters ready. Windows and doors will be fully sealed with air tight and precompressed tape etc. But doing some serious head scratching here how the connection is made at the outside to avoid moisture ingress into boards. Or am I overthinking it? Timber frame company / window installer all saying 'by others' - need to get this right! Also now thinking is there any risk of condensation under extended sills? extract of drawing and image example of intent herewith.............. any thoughts appreciated please.............kr ....mextract ref pro passiv to reveals.pdf
marmic Posted Tuesday at 11:39 Posted Tuesday at 11:39 and how membrane is cut /folded etc? need extra? drip detail at head behind membrane? + intumescent between battens.
Alan Ambrose Posted Tuesday at 18:21 Posted Tuesday at 18:21 I'm planning to have some custom sills made, probably powder coated stainless.
zzPaulzz Posted Tuesday at 19:37 Posted Tuesday at 19:37 I'm going to need some of that too. Do you have a supplier in mind?
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