Hello! We are building a noise barrier. Planning to insulate against 2 by 3 studs. I had planned to use stone wool for insulation and then a steel mesh as protection against birds. Many steel meshes are expensive, but I have found one at Byggmax in Aluminum that will cost 4000 for 90 square meters. The plank is 35 m long and 1.5 m high. There are galvanized meshes that cost a little over 100:-/square meter as an alternative.
I will have horizontal 2 by 2 with a 2-inch gap as facade material.
Is this a construction you believe in?
I have also looked at träullit, but it will cost much more.
Best regards, Patrik
I will have horizontal 2 by 2 with a 2-inch gap as facade material.
Is this a construction you believe in?
I have also looked at träullit, but it will cost much more.
Best regards, Patrik
I don't quite understand where the birds and the mesh come into the picture.P patrikz said:
Shouldn't the mineral wool be covered with wood on both sides?
By the way, do you have a building permit for the fence?
The fence is far too low, assuming that not everyone in the family is shorter than 150 cm.
I am going to try to get planning permission for a noise-reducing fence and my plan is to use some form of plastic mesh or wind net on the open side. Found, among others, https://allox.se/tradgard/tradgardsnat/ but haven't ordered a sample yet. Also found https://www.svenskaplastprodukter.se/produkter/byggprodukter/byggnat where they have a mesh specifically for noise protection.
See the close-up on this page for how they use plastic mesh over the stone wool.
https://www.stangselbutiken.se/sv/moduler-Bullerskydd/noistop-green-noistopgreen-450x1000x110-mm.php
See the close-up on this page for how they use plastic mesh over the stone wool.
https://www.stangselbutiken.se/sv/moduler-Bullerskydd/noistop-green-noistopgreen-450x1000x110-mm.php
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Check out this net I have on the roof of my chicken coop:
https://www.jula.se/catalog/tradgard/utemiljo/stangsel-och-staket/nat-och-stangsel/stangselnat-738004/#tab02
Pretty low price!
https://www.jula.se/catalog/tradgard/utemiljo/stangsel-och-staket/nat-och-stangsel/stangselnat-738004/#tab02
Pretty low price!
Know-It-All
· Västra Götaland
· 12 303 posts
Remember that the dense side (facing you?) Should be completely sealed.
If you imagine that the net should protect against birds pecking away the insulation to build nests with it, it must be very fine-meshed. A mesh size like chicken wire probably won't help.
No, but in that case, it's better if you don't build any protection at all. 150cm is completely wasted money.P patrikz said:
I have to agree with ricebridge here. I've set up a 2 m high noise barrier against traffic myself, but it needs to be up to 3 meters to limit the sound enough for me to notice a difference. All sound travels in a "circular form" and the sound that escapes over the fence will be heard. The same applies if you have an opening at the bottom, even just a centimeter or more, the sound will get through. Imagine a bag of water. If you poke a hole in the bag, the water will flow out. The same goes for sound. The slightest gap, and the sound will get in. Another example, we have soundproof windows with triple glazing. If I open the window just half a centimeter, sound comes in. You should at least have a 2.5-meter high noise barrier. Search online, there's a lot of information out there.
For those potentially interested.
I have studied noise barriers made with stone wool.
So far, I have seen that stone wool with two different densities is used to absorb traffic noise.
It is 80 kg per m3 and 100 kg per m3. Quite dense in other words.
Several companies use these along highways, including one I have seen near Lund City in Skåne.
They are built with galvanized angle iron and plastic mesh.
Each unit becomes quite costly, but if you are handy, you might be able to build it yourself.
The companies say an absorbing noise wall reduces noise by up to 24dB and should be better than a reflective noise wall. A reflective one bounces sound over the road to the other side. It can also hit and reflect larger vehicles like buses and trucks, and then a small part returns to the noise wall again.
The optimal setup is two layers, first an absorbing mat, then a reflective wall/barrier on the inside.
What potentially passes through the absorbing part hits the hard inside and is returned into the absorbing mat.
The advantage is that you can avoid making a large and costly foundation if building a noise wall with cement blocks/masonry blocks.
Then it's sufficient with just posts. But don't forget the height, minimum 2.5 m, preferably 3 meters. Slightly lower if a house is lower than the road if the barrier can be mounted close to the road.
I have studied noise barriers made with stone wool.
So far, I have seen that stone wool with two different densities is used to absorb traffic noise.
It is 80 kg per m3 and 100 kg per m3. Quite dense in other words.
Several companies use these along highways, including one I have seen near Lund City in Skåne.
They are built with galvanized angle iron and plastic mesh.
Each unit becomes quite costly, but if you are handy, you might be able to build it yourself.
The companies say an absorbing noise wall reduces noise by up to 24dB and should be better than a reflective noise wall. A reflective one bounces sound over the road to the other side. It can also hit and reflect larger vehicles like buses and trucks, and then a small part returns to the noise wall again.
The optimal setup is two layers, first an absorbing mat, then a reflective wall/barrier on the inside.
What potentially passes through the absorbing part hits the hard inside and is returned into the absorbing mat.
The advantage is that you can avoid making a large and costly foundation if building a noise wall with cement blocks/masonry blocks.
Then it's sufficient with just posts. But don't forget the height, minimum 2.5 m, preferably 3 meters. Slightly lower if a house is lower than the road if the barrier can be mounted close to the road.