Underfloor sound deadening?

NotAgainFFS · 6 Apr 2014

I'd be grateful of some help please.

I'm running some waste pipes between joists in my bathroom and when I lifted the boards the space between is filled with this stuff - in the bucket

View media item 75600
I've put this to one side for now.

What is it called?

Is there something I can replace it with that doesn't cause so much dust?

Thanks

Norcon · 6 Apr 2014

Someone tunnelling to make an escape mebbe!

Its called soil and rubble and can be found every where in the fields of the countryside.

If you add water and seeds vegetation will grow in it. A dollop of horse dung helps also in the mix.
That's where food comes from.
You thought it was tesco's didn't you?

NotAgainFFS · 6 Apr 2014

Haha!

Doesn't appear like the usual ****e we get around here. Maybe it's an import

Lots of ash in it, I think. I'll see if I can grow something in it to recoup the cost of my renovation project

So what's the best stuff to use as sound insulation?

Norcon · 6 Apr 2014

http://www.sdg.ie/acoustic-vibration-control/acoustic-insulation/

SDG are specialists in this field. Just call them for advice.

NotAgainFFS · 6 Apr 2014

Cheers, Norcon.

OwainDIYer · 6 Apr 2014

it probably is ash/clinker and is standard in central Scotland.

You can put it in strong plastic bags if you want to reduce the dust.

ban-all-sheds · 7 Apr 2014

NotAgainFFS said:
So what's the best stuff to use as sound insulation?

Grand houses used to use crushed oyster shells.

But that was in the days when oysters were cheaper than chips, and steak & oyster pie was invented as a way to make cheaper pies.

Emeraude119 · 7 Apr 2014

Silver sand was also used between floor joists and on top of lath and plaster ceilings as an inert sound deadening material. It is heavy (possibly too heavy for the size and depth of floor joits used these days in dwellings) and added mass to the ceiling, which helps to reduce the amount of low frequency sound which can get from above / below a floor.
It is possibly worth adding that this was generally in the days before ceiling lighting points were installed, but where I have worked on listed buildings it was necessary to clear the silver sand away from the point where a new light fitting was to be installed, so that it did not come pouring through any holes made for the new light fitting.

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Underfloor sound deadening?

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