Re: Common house design
From: R Philip Dowds (
Date: Sat, 23 May 2015 11:17:16 -0700 (PDT)
We have a Tectum ceiling.  It doesn’t do the job.  It’s unlikely that any 
single surface will do the job by itself.  Designing a “dead” (non-reverberant) 
room requires multiple strategies and materials.

R Philip Dowds / Cornerstone Cohousing
175 Harvey Street, Unit 5
Cambridge, MA 02140

land:     617.354.6094
mobile: 617.460.4549
email:   rpdowds [at] <mailto:rpdowds [at]>

> On May 23, 2015, at 1:56 PM, Sharon Villines <sharon [at]> 
> wrote:
>> Acoustics are not a
>> problem because Chuck designed full accoustic (tectum) paneling on ceiling
>> of the great room. Yes, this costs moneyŠabout $12K if I remember rightly.
>> But given thousands of hours of use our common house gets, it was very
>> well worth it.
> How high is your ceiling?
> I also wanted Tectum but we ended up with (boring) acoustical panels. I’m 
> constantly warning people about protecting them — don’t lean ladders against 
> them, don’t poke pins in them to hang decorations, don’t lean decorative 
> baskets against them, etc.
> For those who don’t know Tectum is a like wood shavings compressed into a 
> block like tile. It can be painted and cleaned. Balls bouncing off it don’t 
> make dents, except maybe in the ball.

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