Browse Forums Windows & Doors 1 Nov 15, 2011 7:25 am Hi, looking for some advice. My re-build is located under the 'sharp' end of the incoming flight plan, so I am looking to minimise noise as well as thermal comfort. My idea was double glazing - my builder has suggested 6mm Vlam hush glazing with thicker gyprock in the ceiling and special sealing around windows and doors instead. I have already minimised window size on the eastern side (orientation is the right hand back corner is north, so the living spaces are east/north), and already costed up external blinds for windows, and a diy trellis/arbour for the laundry sliding door (also on the east/north side). the two sliding door window walls are both under the alfresco, so they should remain out of summer sum. Will my builders suggestion work better than double glazing? Thanks, Christine. Re: hush glass vs double glazing 2Nov 15, 2011 7:43 am I would think that double glazing woudl provide both better noise isolation and thermal insulation. Vlam is just laminated glass with a "special" inner resin. Sure it performs better than laminated glass, but how does it perform compared to double glazing. Of course, you could always do both and have Vlam double glazing. Remeber, if you are doing double glazing, for best sound isolation, the glass on each side has to be different thicknesses. Someone like Ed from EcoClassic can provide much more expertise than my passing knowledge. Demolition August 2009, Construction Started September 2009, Completed December 2010 Re: hush glass vs double glazing 3Nov 15, 2011 8:26 am I am in exactly the same situation as you. I am currently building near an airport and absolutely hate noise pollution. While I have not yet finished I spent a lot of time looking for a suitable product. In the end I went with eco classic for a combination of price, quality and good customer support. Even though I live in Adelaide I made the effort to go to Melbourne for a proper look and have had to organise my own delivery. Still looking at the best way to seal the gap between the window reveal and frame. In my bedrooms I went with a acoustic window that has 4/9/8.38 glass setup. The rest are all standard double glazed. My home will be built using hebal panels with bradford soundcheck wall insulation ( still chasing a good price ) and will be doubling up the on standard insulation in the roof. I will also have a insulation blanket sarking under a colourbond roof, however maybe look into tiles as they are a lot thicker and may be better at reducing noise ( maybe someone who knows could chime in ) If you find any other info please come back and share with us. Re: hush glass vs double glazing 4Nov 15, 2011 9:23 am Moved my reply to this thread... Hi Christine, The difference really depends on your supplier's acoustic window performance. I can tell you in terms of our windows... Viridian Vlam Hush is a laminated glass with the equivalent of 2 PVB interlayers and it has a total sound attenuation (stopping power) value of Rw 36 (roughly, it stops 36dB) - that's not taking into account the quality and design of the window which will reduce that. Our EcoTech double glazed window with standard laminated glass has an Rw of 39, and with standard clear float it is 34.5. Although the Rw measure is logarithmic, your ears can only discern a change of 10dB as a significant difference, so either way is fine acoustically in the same window system. But Vlam Hush will not give any benefit in energy efficiency. If you decide to go with Vlam Hush, stay away from the "performance glasses" as they will give you problems by way of potential cracking in a single glazed situation. Ask your window supplier for their tested values... if they differ greatly from ours be careful as they may not be window values. Ed "ECOECO" At 'EcoEco', we design windows, we design the best windows, we do it for you, so that when you’re happy we are happy. Tel. 1800 326 326 Re: hush glass vs double glazing 5Nov 15, 2011 7:53 pm Thank you for your info Ed. If I was on the East Coast, this would be so much easier! Perth is a very funny city when it comes to double glazing and the like. Aza0, what I have found out today (yes, I was supposed to be working, but oh well): - solid core external doors - really good sealing around windows and doors and between external walls and roof - have 'quiet' rooms on the opposite side to where the planes are (in my case, they come straight over the top) - where possible, have vents (ie bathrooms, toilets etc) venting to the other side of the house (ie, planes coming past on the left, put vents on the right side) -for double glazing to deal with aircraft noise etc - the more space between the two glass panes the better - they all suggest starting from 10 cm and going larger. Interestingly, standard double glazing is great at absorbing voices and road traffic, just not for planes. - best results - laminate, 100mm gap, laminate (anyone know how thick double brick walls are in WA?) - for walls, the more mass the better (so its good I am getting a double brick house) - attic type roofs (ie,like most of ours) are better than flat roofs because of the larger space for still air - lots of insulation - but porous insulation. Non porous like styrofoam does not do anything for noise control although its great for thermal control. - thicker glass is always going to absorb more sound than thinner. - something about that layer of 'stuff' 'vibrates' and attenuates a little more aircraft sound, apparently. - laminated glass works even better when conditions are warm. (no mention of how much better, though. Probabley a fraction of a percent) So it looks like my builder is right, with my budget (very tight) going for Vlam hush, thicker gyprock and sealing of windows and doors will give a better result than standard double glazing for reducing aircraft noise. Won't do much for thermal control, and I may have to revisit that another day (when the bank balance regrows or I win lotto). I don't think my budget will withstand the laminated double glazing price, unfortunately, although that would have been the very best option. Ed, I will be asking the builder's sales guy for the tested window values (although I may have already downloaded them as I know Dowell are suppying windows, but I don't know which exact windows I'm getting) - since I came prepared with lots of research he has had a pretty easy time of it, and I should probably spread the pain a little. From the looks of the internet, you could spend a lifetime doing research on aircraft noise attenuation. Christine. Re: hush glass vs double glazing 6Nov 03, 2015 11:47 am ChristineX Thank you for your info Ed. If I was on the East Coast, this would be so much easier! Perth is a very funny city when it comes to double glazing and the like. Aza0, what I have found out today (yes, I was supposed to be working, but oh well): - solid core external doors - really good sealing around windows and doors and between external walls and roof - have 'quiet' rooms on the opposite side to where the planes are (in my case, they come straight over the top) - where possible, have vents (ie bathrooms, toilets etc) venting to the other side of the house (ie, planes coming past on the left, put vents on the right side) -for double glazing to deal with aircraft noise etc - the more space between the two glass panes the better - they all suggest starting from 10 cm and going larger. Interestingly, standard double glazing is great at absorbing voices and road traffic, just not for planes. - best results - laminate, 100mm gap, laminate (anyone know how thick double brick walls are in WA?) - for walls, the more mass the better (so its good I am getting a double brick house) - attic type roofs (ie,like most of ours) are better than flat roofs because of the larger space for still air - lots of insulation - but porous insulation. Non porous like styrofoam does not do anything for noise control although its great for thermal control. - thicker glass is always going to absorb more sound than thinner. - something about that layer of 'stuff' 'vibrates' and attenuates a little more aircraft sound, apparently. - laminated glass works even better when conditions are warm. (no mention of how much better, though. Probabley a fraction of a percent) So it looks like my builder is right, with my budget (very tight) going for Vlam hush, thicker gyprock and sealing of windows and doors will give a better result than standard double glazing for reducing aircraft noise. Won't do much for thermal control, and I may have to revisit that another day (when the bank balance regrows or I win lotto). I don't think my budget will withstand the laminated double glazing price, unfortunately, although that would have been the very best option. Ed, I will be asking the builder's sales guy for the tested window values (although I may have already downloaded them as I know Dowell are suppying windows, but I don't know which exact windows I'm getting) - since I came prepared with lots of research he has had a pretty easy time of it, and I should probably spread the pain a little. From the looks of the internet, you could spend a lifetime doing research on aircraft noise attenuation. Christine. Hi, Just wanted to know how you going with Hush glass. As I am in the same situations. Thanks Re: hush glass vs double glazing 7Nov 11, 2015 12:02 pm janicejgilliam Hi, using thicker glass can provide some insulation. Double glazing offers the best shield against external noises. Double glazing window, especially when acoustic glass is used, helps to insulate against the nuisance caused by outside noise. Laminated acoustic double glazing window can reduce noise levels up to 35 decibels. Anyway consider all the opinions and go on with the right choice. (mod edit - spam removed) Sorry, that's incorrect. Thicker glass helps noise, not thermal. Double glazing is good for noise if it uses different thicknesses for each pane. Laminated is useful acoustically, but you wouldn't be able to discern the difference. Ed "ECOECO" At 'EcoEco', we design windows, we design the best windows, we do it for you, so that when you’re happy we are happy. Tel. 1800 326 326 Re: hush glass vs double glazing 8Nov 12, 2015 5:43 pm Have you visited the viridian display centre? They have some good info. Also there is Jason Windows and a few other wondow manufacturers that can offer advice in Perth. Also with the bricks they do an acoustic double brick for internals as well as different roof ties. I would also investigate anticon, this could assist in noise as well as climate control. This is one of the reasons I decided to go overseas for my double glazed windows. As the builder indicated, he's worked on many upmarket builds, these were the most well… 13 19245 For your reference Performance Labels: Window assemblies in housing, except timber windows, must be labelled so the label can be seen when it is in situ. For timber… 6 7718 |