Firing line shade covers & noise reduction/reflection input

[Geno C]

Our range built one long cover for all the benches at once. It has a metal roof. Darn thing was super loud. We ended up having a contractor put spray on foam on the bottom of it, and it helped a bunch.

Spray foam isn’t cheap but it is awesome at absorbing sound! When I built a reefer box, when we spray foamed the walls and ceiling, it was extremely quiet inside before we put the inside panels on. When I build my cover for my bench area, I will be spray foaming without a doubt

 

[PatMiles]

My thoughts on firing line noise reduction was to control the amount of "noise" being reflected back towards the shooter by an overhead cover. It seems that some of the cures will not do just that.
Am I wrong in thinking that any barrier that has a solid, slick face (spray on foam, sound board and others) will not help mitigate the problem of noise reflection.
I would think that something with a porous makeup would do a better job.
Thoughts?

 

[riflewoman]

A couple of concepts.

while height is an advantage, also consider a two surface design where the front roof has a steeper pitch say 40 degrees and the rear roof is much shallower, say 20-25 degrees. The two roofs are placed to create an air gap between them. This allows the blast a way to escape. It also improves air circulation. The forward roof should overhang the rear roof enough to block sun and rain. Line the lower side with acoustic tile to dampen vibration.

 

[243winxb]

Am I wrong in thinking that any barrier that has a solid, slick face (spray on foam, sound board and others) will not help mitigate the problem of noise reflection.

At the Pa. range , there is an air space between the sheets & roof. Plus the gap in the middle of the roof.

 

[PatMiles]

At the Pa. range , there is an air space between the sheets & roof. Plus the gap in the middle of the roof.

What are the sound deadening sheets made of? Manufacturer?

 

[PatMiles]

A couple of concepts.

while height is an advantage, also consider a two surface design where the front roof has a steeper pitch say 40 degrees and the rear roof is much shallower, say 20-25 degrees. The two roofs are placed to create an air gap between them. This allows the blast a way to escape. It also improves air circulation. The forward roof should overhang the rear roof enough to block sun and rain. Line the lower side with acoustic tile to dampen vibration.

Roof of new cover is already up, so no chance to change the slope or makeup.

 

[243winxb]

What are the sound deadening sheets made of? Manufacturer?

Only the Pa game commission may know. Or the contractor they hired. I didnt see any printing or marking on the materal.

Its at game lands #43. It seems quieter than my home range, that has a plywood roof, with asphalt shingles.

Sorry, not much help.

 

[PatMiles]

Only the Pa game commission may know. Or the contractor they hired. I didnt see any printing or marking on the materal.

Its at game lands #43. It seems quieter than my home range, that has a plywood roof, with asphalt shingles.

Sorry, not much help.

Thanks anyway sir!

 

[243winxb]

Googled- PROJECT NO: PGC-043-19-01 specifications

Found the specifications http://www.emarketplace.state.pa.us...ion_0.pdf&OriginalFileName=Specifications.pdf

 

[243winxb]

Shot my 243 Win. 18" barrel at the state range yesterday to compare to my home range, that also has a covered firing point. Roof is of plywood & asphalt shingles.

The state range is quieter & has less felt concussion with the rigid foam panels overhead. Imo.

 

[PatMiles]

Shot my 243 Win. 18" barrel at the state range yesterday to compare to my home range, that also has a covered firing point. Roof is of plywood & asphalt shingles.

The state range is quieter & has less felt concussion with the rigid foam panels overhead. Imo.

I thought that might be the case. The rigid foam is listed as insulation, probably more for heat/cold control. Why that would be is anyone's guess with open sides, prolly some gubmint requirement.
The rigid foam is a solid face which I would have guessed would reflect the sound waves back down on the shooters.
I would think that it would take something with a perforated face to absorb some of the sound waves to quiet the reflected noise. I'm thinking something like the weed barrier fabric used by landscapers. Being under the roof there would be next to no deterioration of the material over time. Easy to install, just staple it in place.

 

[spife7980]

Higher roof also means more sun for longer and more rain blowing in.

Ain’t that the truth. I opted to lift mine high and now I get shade for 3 hours at mid day lol