Browse Forums General Discussion 1 Aug 01, 2015 9:41 pm Hello We purchased an existing house on a corner block, which I always said I would never do ! It was built in the 70s but has had renovations done. Some of the windows were original and rattled in the wind and due to the corner traffic noise, we decided to invest in doubled glazing on all windows except the laundry. This was at a fairly large expense but thought the insulation for both noise and heat/cold would be worth it. I have to say I am less than impressed. I can easily have a conversation with my daughter (5 yr old ) through the windows without needing to raise the volume of our voices and the traffic noise has barely changed. This was 18 mths ago an I am still feeling annoyed at the amount of noise coming through.....is this to be expected ? Re: Double glazed windows with poor noise insulation 2Aug 02, 2015 7:40 pm There is an optimal air space size between panes for noise reduction, and I think glass panes of different thickness also help. Did you specify glass thickness and air gap size? Do you have insulation in the walls? If not, maybe consider putting some in on the walls facing the traffic, or re plastering with sound check plaster where it faces the noise. Seal around windows and doors (you can get expandable foam) Re: Double glazed windows with poor noise insulation 3Aug 02, 2015 8:34 pm For optimal noise reduction, the glass panes should have a large separation, which is not optimal for thermal double-glazing. For noise, people will often leave the original windows on the outside, and add an extra window on the inside of the reveal, with around 100mm in between. For noise, the double glazing is really only as good as a single pane of glass with the combined thickness of the glass panels. However, even that should be considerably better than the post suggests. Things to look for: Do the windows seal well or are there any air gaps? Sliding type windows generally don't seal well, and so let the noise in, whereas awning windows should compress down in their seals, and seal up fairly well. Perhaps there is an issue somewhere around the windows. Is there brick sealing up closely to the window all around on the outside, or are there gaps or other materials involved? 5 31091 Andrea You are welcome. I know we over engineer our slabs, as we have to give a 6 year structural warranty so we think its prudent to spend a little extra up front, for… 13 13314 2 9109 |