triple glazed patio doors

ytfcmad

David_Aston wrote: »

Thanks all!
E.exile, thanks for the details. I have found an online company called Kat, which claims to do them. No reply to my email as yet.
Ytfcmad, best combination of security, insulation and noise reduction?
I did quite like the idea of bifold, aperture too small, apparently. I do assume a heavy door is best off supporting it,s own weight as per a slider rather than hinged.

In that case then triple glazing is probably not the best option, an acoustic laminate will give you better security and noise reduction, coupled with 6mm toughened.
May well be cheaper and a lot lighter (will be better for the door in the long run) and as far as insulation goes you'd need a lab at NASA to show you the difference.

David_Aston

Thanks for your comments ytfc,
I have received two quotes from local suppliers. Similar amounts. Nine Grand-ish. Bifold doors take the first quote to ten grand.
I don't think either are quoting for a triple glazed patio door, of any sort! I did bring away a triple glazing pamphlet from one. Platinum NRG being the manufacturer. On it, they show a graph of various window types. Single glazed with a U value of 6. At the other extreme, their own triple glazed to Passivhaus standards, and rated at 0.8! Not much worse than an insulated wall, apparently. The small print stated that this value requires Krypton gas, (can't help thinking of Superman,) glazing flipper and thermal dam. Also, a six chamber profile. Pretty techie eh!
Could I ask, how could I ensure your recommendations of acoustic laminate, and toughened 6mm in a double glazed patio window were fitted please? A particular brand to ask for or something?

leveller2911

I will leave ytfcmad to answer you question but with regards to thermal properties of the triple glazing you referred to being 0.8 this is not great. In fact a decent double glazed unit can have a U value of around 1.1 so the sabing of 0.3 will save you pennies each year from your heating bill. A DG unit consisting of 4 mm Softcoat Low E glass, 12mm spacer, then 4mm flaot glass filled with Argon gas will give a U value of 1.2 so plenty of scope with Double glazing to reduce the U value if required.

My view is its not worth the extra cost nor weight ,especially with patio doors. Triple glazing is a great idea for colder climates such as Scandinavia but not in the UK .

David_Aston

Thanks for your comments leveller.
Indeed, this nrg company leaflet shows their own standard triple glazed window to have a value close to your quoted 1.2, so no gain there for triple glazing.
Presumably, I would simply ask for the window build, specified in your last post, and see what my two potential suppliers have to say!

jamesperrett

ic wrote: »

I opted for triple for all our windows and doors in order to reduce road noise as we live on a main road.

Triple glazing is actually less effective at reducing noise transmission than double glazing with a wider air gap.

EssexExile

jamesperrett wrote: »

Triple glazing is actually less effective at reducing noise transmission than double glazing with a wider air gap.

The theory may say that but in practice I've found the triple glazing much better than double at reducing noise.

ytfcmad

David_Aston wrote: »

Thanks for your comments ytfc,
I have received two quotes from local suppliers. Similar amounts. Nine Grand-ish. Bifold doors take the first quote to ten grand.
I don't think either are quoting for a triple glazed patio door, of any sort! I did bring away a triple glazing pamphlet from one. Platinum NRG being the manufacturer. On it, they show a graph of various window types. Single glazed with a U value of 6. At the other extreme, their own triple glazed to Passivhaus standards, and rated at 0.8! Not much worse than an insulated wall, apparently. The small print stated that this value requires Krypton gas, (can't help thinking of Superman,) glazing flipper and thermal dam. Also, a six chamber profile. Pretty techie eh!
Could I ask, how could I ensure your recommendations of acoustic laminate, and toughened 6mm in a double glazed patio window were fitted please? A particular brand to ask for or something?

Whoever you purchase your patio or bifold from will have a glass supplier. Ask them to talk to their glass supplier and get you a price for an acoustic double glazed unit or the additional cost of an acoustic DGU versus a standard unit. Google Stadip Silence to get an idea of the sort of product i'm talking about.

If you really wanted to do it properly you need to know the DB rating of what you want to keep out. The frame supplier may well have test results for DB ratings of various glass make up's with their system so worth asking.

docmatt

EssexExile wrote: »

The theory may say that but in practice I've found the triple glazing much better than double at reducing noise.

Agreed, a 4/4/4 triple won't do !!!!!!. I've got 6.4mm outer lam, 4mm middle and 6mm inner and it's pretty good.

Essex, not sure how far from Birmingham you are but the guys who did mine are very good.

David_Aston

docmatt
I've just had a chat with our preferred fitting firm. I had failed to write down all of the good input from you guys. I did remember to ask about acoustic laminate, and he said that they had tended to fit it in secondary glazing. He said that the nrg platinum triple glazing was 4mm, 12mm gap, 4mm, 12mm gap, and another 4mm. Also, that the passivhaus version would be very expensive.
The state of play is that he will come round, measure up, at which point, I can mention your further input re heavier glass in double glazing etc. I suppose I should also get the dead local guy, ie, just across the road to do the same. However, I have only spoken to him on the phone, and he did sound a bit pushy for my liking.
I hadn't mentioned earlier in this thread, that three high windows are currently awkward to clean. Fitting firms suggestion was that current casement windows have a slider which allows the hinged side to move towards the middle allowing an arm to reach through for cleaning. Apparently tilt and turn allows the whole window to be pulled into the room to allow cleaning. He didn't have any to demonstrate this effect in the showroom. Don't know if you guys may have an opinion on this option?

ytfcmad

David_Aston wrote: »

docmatt
I've just had a chat with our preferred fitting firm. I had failed to write down all of the good input from you guys. I did remember to ask about acoustic laminate, and he said that they had tended to fit it in secondary glazing. He said that the nrg platinum triple glazing was 4mm, 12mm gap, 4mm, 12mm gap, and another 4mm. Also, that the passivhaus version would be very expensive.
The state of play is that he will come round, measure up, at which point, I can mention your further input re heavier glass in double glazing etc. I suppose I should also get the dead local guy, ie, just across the road to do the same. However, I have only spoken to him on the phone, and he did sound a bit pushy for my liking.
I hadn't mentioned earlier in this thread, that three high windows are currently awkward to clean. Fitting firms suggestion was that current casement windows have a slider which allows the hinged side to move towards the middle allowing an arm to reach through for cleaning. Apparently tilt and turn allows the whole window to be pulled into the room to allow cleaning. He didn't have any to demonstrate this effect in the showroom. Don't know if you guys may have an opinion on this option?

Your man is talking out of his backside, that triple glazed unit will be a total waste of money.