shufflebeat wrote:I've been toying with fettling some 45kg/m³ Knauf ecose into some mobile panels but the limp nature of it is making framing/finishing into more effort than I can contemplate, coupled with the expense of trial and error design.
I noticed in a certain well known DIY shop the other day some workshop floor tiles made from hard wearing foam sponge and coincidentally two of these would fit a R/W panel and 6 high Hz foam tiles just about perfectly.
At the risk of ridicule... It seems logical that two of those tiles with as many holes as I can manage to allow air passage as a rear panel, a R/W panel in front of that, cheesecloth lightly PVAd and wrapped around that, some foam tiles in front and possible some PVC trim round the edge for the ladies is feasible.
Have I broken anything?
blinddrew wrote:Critical thing is whether it's open or closed cell foam. You need the former for the air to pass through it and any absorbance to take place.
shufflebeat wrote:I reckon I could cut almost 1/2 the material out of the (closed cell) foam tiles with a hole cutter without compromising the structural benefits. Not worth considering?
blinddrew wrote:The energy is absorbed by the movement of air though the foam. Closed cell = no air movement = no absorption.
Thanks for that D and I understand what you're saying but I think there's a point you may have missed.
The closed foam backing would be mostly hole as I would be drilling as many 2" holes in it as I can get away with without collapsing the structure.
Maybe I'll give it a go in the interest of pseudoscience.