I decided it was time, well the wife decided, it was time to reduce the noise of the miners coming from The Mine (AKA loft crawl space)

I researched a few ideas like egg boxes on the walls of the The Mine, standard packing sponge foam and the good foam they use in sound recording studios. I came across a company called The Sound Deadening Shop based in the UK that specialised in sound proofing. I messaged them and got a quick response from a chap called Colin that was informative and to the point:

Hi Daniel

Thanks for your enquiry.

MLV is a highly dense material that forms a barrier to unwanted noise. I can confirm that this material is the best choice for reducing low frequency noise intrusion.

Regards

Colin

As most of the sound was coming from the hatch to the crawl space I figured I would give this a go first and bought a roll of there MLV to go on the back of the door. The door is made of thin plywood with air cavity. Typical interior UK door

The Mine Hatch - Closed
The Mine Hatch – Closed

 

First to establish a baseline and record the sound level with the door open and closed. The sound meter never moved position through out the test.

The Mine Hatch – Noise level Open – 59.3 dB

 

The Mine Hatch - Noise level Closed - 48.3 dB
The Mine Hatch – Noise level Closed – 48.3 dB

I attached the MLV to the back of the door. I did this from inside The Mine so I could fit the MLV snug right up to the edges leaving as little air gap as possible. I should have used the correct acoustic glue but I was a bit sceptical what the results would be and didn’t want anything too permanent, so I used small picture nail. Maybe with the glue the noise will reduce further

 

Mine Hatch Open with MLV in place
Mine Hatch Open with MLV in place

 

The Mine Noise level After fitting MLV - 46 dB
The Mine Noise level After fitting MLV – 46 dB

MLV Conclusion

I was a bit sceptical this would even work but looks like we have a result. 20mins work, a reduction of 2.5dB and my wife is a little happier! that’s got to be worth £25 in anyone’s book.