Quieting a metal roof

[aeopav]

I'm looking into a new metal building and the placement of it would be near the property line next to my neighbors house. My neighbor on the other side of me just put up a metal building to house their new motor home. It is at least 200 ft away from my house and there is a very noticeable din coming from it as soon as it starts raining. I find it rather annoying. How do you quiet a metal roof? Does spray foam insulation help deaden the sound? Some type of underlayment? I did a quick search of previous posts and did not really find anything definitive. I did see a lot of recommendations on OSB or plywood under a metal roof, but what I read into it was recommendations based on longevity/structural integrity concerns. Nothing was real specific in regards to sound deadening.

Mark

 

[Chaz]

This is curiously funny....
I put a metal roof on my place cause I LOVE the sound of the rain on it..... Different strokes for different folks, I guess.

 

[Kaizen]

I have metal on garage 20 feet from house. Used 5/8 zip panels on roof. Not a sound on exterior like you describe. On the inside as I don’t have it closed off or insulated I do hear it but not deafening like you describe. Neighbor most likely just has metal.


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[aeopav]

There is no accounting for tastes....right?

The noise is not deafening, far from it. I just know I've spent a lot of time on my back porch over the years, enjoying the peace & quiet. Even rain storms from time to time. Now, when it rains this white noise type of hiss starts to rise from the East and, for me at least, it is not as enjoyable as it used to be.

 

[brownbagg]

i love that sound, reason why i put a metal roof on, that some mighty fine sleeping weather. when i hear a storm a coming, Im running to the bed

 

[kaymccampbell]

OSB as the decking, with a half lapped layer of the eggcrate vinyl "tarpaper". Takes the edge off the tinny drumming. I've also seen Grace ice n water shield used sticky side up, applied to the underside of the tin sheets.

 

[PugetDude]

OSB as the decking, with a half lapped layer of the eggcrate vinyl "tarpaper". Takes the edge off the tinny drumming. I've also seen Grace ice n water shield used sticky side up, applied to the underside of the tin sheets.

+1
It depends on the substrate and/or the insulation. An uninsulated metal roof installed over purlins is going to be a lot noisier than the same roof installed over plywood/osb. Insulation is going to further dampen the noise.

 

[Solarlurker]

Are you trying to block the sound on the inside of the building or when your outside?

I have learned from sound proofing my podcast recording room it's really hard and expensive. If you really hate the sound of rain on metal roof its probably best to use a shingle roof.

 

[aeopav]

The Grace ice & water shield makes sense. It goes on a lot like the damping materials, like Dynamat (sp), that is used for cars.

 

[aeopav]

I'm looking to attenuate the noise both inside and outside.

 

[readhead]

As PD mentioned metal over purlins only is like a drum. A layer of blanket insulation will tone it down a lot both inside and out.

 

[MushCreek]

My house and barn have tin over 5/8 OSB. Neither is excessively noisy. My little shed is just tin over purlins, and it's loud inside when it rains. The most effective sound deadener would probably be a layer of spray foam on the inside of the tin.

 

[Leaflessshadetree]

One of my buildings has a heavier gauge material with a coating to manage "condensation". It in noticeably quieter (inside and outside) than the other 4 buildings nearby.
The 2 with thin "modern" steel are louder/more "ping" sound than the old buildings with heavier steel in the old corrugated pattern.

 

[Diesel Dan]

All my barn builds have been with trusses 2' OC and sheeted with OSB, first was shingled las two were metal. Noise is not an issue, IMO. A older shop I refurbished a corner of (30x100) was all metal over purlins and was LOUD inside.

 

[Sevenhills1952]

I'm looking into a new metal building and the placement of it would be near the property line next to my neighbors house. My neighbor on the other side of me just put up a metal building to house their new motor home. It is at least 200 ft away from my house and there is a very noticeable din coming from it as soon as it starts raining. I find it rather annoying. How do you quiet a metal roof? Does spray foam insulation help deaden the sound? Some type of underlayment? I did a quick search of previous posts and did not really find anything definitive. I did see a lot of recommendations on OSB or plywood under a metal roof, but what I read into it was recommendations based on longevity/structural integrity concerns. Nothing was real specific in regards to sound deadening.

Mark

If your neighbor's metal roof is annoying, how can you fix that problem? Even if you soundproof yours you would still hear theirs, unless you offer to pay to soundproof theirs, right?

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[yeldogt]

Traditional standing seam metal roof installed over wood decking is flat to the deck and held fast -- they don't make much noise. It's the voids and flex in other types -- that's why they are noisy. Some of the seam caps are very noisy.

The really old style of galvanized steel corrugated was really not that bad -- it was so firm. The new thin stuff sings -- can really hear it outside.

I had to do a full mat type underlayment for my new Zinc DLSS roof -- really quiet. My guess is ice shield would make many quieter.

I know from others experience that foam sheet insulation under a roof actually make the roof louder.

 

[LXCam]

You don’t have to install a 100% barrier underneath the roof. A few well placed squares of sound deadening material will dampen it.

 

[TTMotorsports]

Some squares of dynamat or the like should help for sure.

 

[mtwaterguy]

+1
It depends on the substrate and/or the insulation. An uninsulated metal roof installed over purlins is going to be a lot noisier than the same roof installed over plywood/osb. Insulation is going to further dampen the noise.

My neighbor in Oregon realized this, after he removed his new metal roof and added the OSB.

 

[Rc_Guy]

Our house is a pole barn house and when they built it they put osb on the roof and the house party of it before they put the steel on it. We hardly know it is raining out unless it is pouring.

 

[rsanter]

Any foam insulation or rubberized coating that is ATTACHED to the underside of to metal,roof will dampen the sound

 

[yeldogt]

Any foam insulation or rubberized coating that is ATTACHED to the underside of to metal,roof will dampen the sound

Actually -- that is not correct.

 

[Chuckster in NJ]

All you need and need to know: www.sounddeadenershowdown.com
CLD tiles are excellent for dulling vibrations without breaking the bank.

BTW! Don is now retired and there is plenty of info on his website..... It appears you can still purchase materials.

 

[aeopav]

Thanks for all the replies folks. Obviously, I can't really do anything about my East side neighbors building making noise, but I'm going to do what I can so that my building does not sound like theirs. I'll probably be insulating, but I really like the idea of the Grace. I know from experience that stuff if pretty pricey though, and a real bear to put down well.

Again, many thanks.

Mark

 

[Monza Harry]

One caution I might add is that foam and steel aren't usually friends long term, condensation/rust will set in, check out anything you are considering, carefully. This would be expensive on a building scale but have you considered "Lizard Skin" or some bed liber type materials, something to maybe research? Even regular undercoating did some noise abatement inside my full size cargo van years ago. Harry http://m.lizardskin.com/sound-control-insulation.html and a few to look into here: https://ca.search.yahoo.com/search;...ed+liner+spray&fr2=sa-gp-search&fr=yfp-t&fp=1

 

[kaymccampbell]

Thanks for all the replies folks. Obviously, I can't really do anything about my East side neighbors building making noise, but I'm going to do what I can so that my building does not sound like theirs. I'll probably be insulating, but I really like the idea of the Grace. I know from experience that stuff if pretty pricey though, and a real bear to put down well.

Again, many thanks.

Mark

Make sure you get your panels rolled from real galvalume stock. Preferably painted on the underside. It costs a bit more, but you'll realize a savings in not having to replace your roof prematurely.

 

[PugetDude]

You don’t have to install a 100% barrier underneath the roof. A few well placed squares of sound deadening material will dampen it.

Some squares of dynamat or the like should help for sure.

Here is a low-cost alternative to Dynamat...

https://www.lowes.com/pd/TITE-SEAL-...3-ft-Rubberized-Asphalt-Roll-Flashing/1007825

 

[Kaizen]

I installed my own 20 something foot panels. Can’t image how much heavier it would be with a sticky piece of rubber to it


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[kj_mustang]

Metal over purlins roof with 2" closed cell spray foam applied directly and then about 6" open cell spray foam over that. I lived in mine for almost 2 years. Hard down pours were no louder than my house with shingled roof. It deaded the sound quite well. Building was quiet in hard winds.