[Greenbuilding] fireproof light deck

[RT]

On Fri, 08 Apr 2011 10:32:16 -0400, Gennaro Brooks-Church  
<info at ecobrooklyn.com> wrote:

> I found some rock wool board that could be covered with a thin layer
> of colored concrete.
> Lots of high embodied energy...but would last.

>
> On Fri, Apr 8, 2011 at 10:20 AM, JOHN SALMEN <terrain at shaw.ca> wrote:

>> thinset mortared to rockwool boards



Not sure about the durability of pavers made in such a fashion

(ie I sort of doubt that thinset has much resistance to frost destruction  
due to the extremely small particle size of the fine sand aggregate that  
is typically used ... maybe instead of thinset mortar you go to the  
hardware store where people take their left-over exterior-grade latex  
paint for safe disposal and use that with some coarse sand (ie "concrete  
sand" -- particle size up to 3 mm) and cement ( ie replace the mixing  
water with the recycled latex paint) to make a synthetic mortar ? How  
fire-resistant is latex paint ? Dunno. )

but just a ran-dumb thought:

If locally-sourced, rigid rockwool boards (as opposed to the stuff Gennaro  
mentioned, which comes from the other side of the planet and as such, how  
Green would it be ?) aren't available, I wonder if salvaged fibreglass  
ceiling tiles might be suitable for the cores of the stressed-skin  
panels/pavers ?

I'm thinking of the ancient-era (1960's ?) stuff that was used in hung  
ceilings -- a crunchy, yellow rigid glass fibre (makes me itchy just  
thinking about the %@^#*@stuff) with a thin plastic (?) film-type skin on  
the finished side.

Probably qualifies as being "fire resistant" but I don't know if the  
material has any drainage capacity.

The "tiles" were probably only about 0.5 inches thick so you'd have to  
stack maybe 4 or so together to get the desired thickness.

Maybe one wraps the schmozzle of tiles in something like the mesh that  
onion bags are made of (or maybe the "official" mesh that is used for EIFS  
stucco finishes) for the tensile reinforcement ?

-- 
=== * ===
Rob Tom
Kanata, Ontario, Canada
< A r c h i L o g i c  at  Y a h o o  dot  c a >
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