<!doctype html public "-//W3C//DTD W3 HTML//EN">
<html><head><style type="text/css"><!--
blockquote, dl, ul, ol, li { padding-top: 0 ; padding-bottom: 0 }
--></style><title>Re: [Greenbuilding] fireproof light
deck</title></head><body>
<div>Dear David and Gennaro,</div>
<div><br></div>
<div>Brooklyn Bridge Forest is not necessarily any longer looking at
greenheart. As well, it is unlikely that there will be any
"sustainable" source of greenheart, ever. At least, not
greenheart that would at all be durable, since, as I may have
mentioned before, other than teak, almost all the tropical hardwoods
imported into the US that are popular because of their durability get
that durability from the fact that the wood is from trees that are 250
- 1000 years old. That is, they are extremely dense as a result of
their age. Teak, on the other hand, has an inherent oiliness that
gives it extreme durability. This inherent durability can come about
even in much younger tress. The same is true of a few other species (I
have mentioned, ad nauseam, black locust) that have inherent
durability when even young. However, all domestic hardwoods have a
Class B or C fire rating and thus do not solve Gennaro's
problem.</div>
<div><br></div>
<div>As far as recycled plastic lumber, I believe that Axion can add a
spray-on fire retardant to their material. However, Axion recycled
structural composites are not necessarily lighter than tropical
hardwoods, so I don't know if that makes them too heavy for Gennaro's
situation.</div>
<div><br></div>
<div>I would be happy to contact Axion folks to find out if the
flame-retarding coating is currently available and details about it
(including the weight of the material).</div>
<div><br></div>
<div>Of course, one would have to assess load-bearing capacities vs.
profiles, since this would be different than wood, and then factor
that into weight calculations.</div>
<div><br></div>
<div>tim keating</div>
<div><br></div>
<div>At 12:13 AM -0400 4/4/11, David Bergman wrote:</div>
<blockquote type="cite" cite>Gennaro,<br>
<br>
Add "eco material" to that description and it becomes an old
quest of mine. Are you talking about something to sit directly on the
"real" roof? About the best I could come up with when I last
tackled the question was lightweight concrete roof pavers -- not all
that eco though maybe there are some made with flyash.<br>
<br>
In terms of wood, NYC used to accept Ipe, but I heard a rumor they
stopped when the fire rating claims didn't prove out. And, of course,
there was the rainforest sourcing issue.<br>
<br>
I've looked for fire-rated recycled plastic lumber from time to time,
but have not yet found any. (Tim V-K: any updates you've heard
of?)<br>
<br>
There is a group called Brooklyn Bridge Forest (
http://www.brooklynbridgeforest.com/) that is trying to set up a
sustainable source for greenheart for maintaining the Brooklyn Bridge.
I'm not sure what kind of fire rating greenheart does or doesn't have.
(According to one site I just googled, it carries a "high/medium"
rating.)<br>
<br>
David<br>
David Bergman RA LEED AP<br>
<font size="-1" color="#808080"><b>DAVID BERGMAN</b> ARCHITECT /<b>
FIRE & WATER</b> LIGHTING + FURNITURE<br>
</font><font color="#808080">architecture . interiors .</font><font
color="#008080"> ecodesign</font><font color="#808080"> . lighting .
furniture<br>
<font size="-1">bergman@cyberg.com <u>
www.cyberg.com</u></font><br>
<font size="-1">241 Eldridge Street #3R, New York, NY 10002<br>
</font>t<font size="-1"> 212 475 3106 f 212 677
7291</font><br>
</font>At 08:01 PM 4/3/2011, Gennaro Brooks-Church wrote:<br>
<blockquote type="cite" cite>Hello,<br>
Can anyone suggest a lightweight non-combustible deck material for a
roof deck?<br>
In New York a brownstone has an average flat roof of 700sq.ft. The law
only allows 20% of it to be covered with combustible decking, which
isn't much of a deck. Yet the non-combustible decking is too heavy for
the old roofs.<br>
Suggestion?<br>
<br>
Gennaro Brooks-Church<br>
<br>
Cell: 1 347 244 3016 USA<br>
<a href="http://www.EcoBrooklyn.com">www.EcoBrooklyn.com</a><br>
22 2nd St; Brooklyn, NY 11231<br>
<br>
_______________________________________________<br>
Greenbuilding mailing list<br>
to Send a Message to the list, use the email address<br>
Greenbuilding@bioenergylists.org<br>
<br>
to UNSUBSCRIBE or Change your List Settings use the web page<br>
http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_<span
></span>lists.bioenergylists.org<br>
</blockquote>
</blockquote>
<blockquote type="cite" cite><br>
_______________________________________________<br>
Greenbuilding mailing list<br>
to Send a Message to the list, use the email address<br>
Greenbuilding@bioenergylists.org<br>
<br>
to UNSUBSCRIBE or Change your List Settings use the web
page</blockquote>
<blockquote type="cite"
cite
>http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists<span
></span>.bioenergylists.org</blockquote>
<div><br></div>
<div><br></div>
<x-sigsep><pre>--
</pre></x-sigsep>
<div align="center"><font face="Skia" size="-1"
color="#000000"><br></font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"><br></font></div>
<div align="center"><font face="Skia" size="-1" color="#000000">"The
Earth and myself are of one mind. The measure of the land and
the</font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000">measure of our bodies are the same..."</font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"> <x-tab>
</x-tab
> <span
></span
> <span
></span> - Hinmaton
Yalatkit, Nez Perce chief</font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"><b>____________________________________________</b></font
></div>
<div align="center"><font face="Skia" size="+1"
color="#000000"><b><br></b></font></div>
<div align="center"><font face="Skia" size="+1"
color="#000000"><b>R A I N
F O R E S
T R E
L I E F</b></font></div>
<div align="center"><font face="Skia" size="+1"
color="#000000"><b><br></b></font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"><i>Sparing the World's
Rainforests from Consumption</i></font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"><b><br></b></font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000">Rainforest Relief works to protect the world's
remaining tropical</font></div>
<div align="center"><font face="Skia" size="-1" color="#000000">and
temperate rainforests by reducing the demand for the
products</font></div>
<div align="center"><font face="Skia" size="-1" color="#000000">and
materials of rainforest destruction such as timber and
paper,</font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000">industrial agricultural products such as bananas,
beef, coffee,</font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000">chocolate and cut flowers, and mining
products</font></div>
<div align="center"><font face="Skia" size="-1" color="#000000">such
as oil, gold and aluminum.</font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"><b><br></b></font></div>
<div align="center"><font face="Skia" size="-1" color="#000000"><b>New
York, NY: (917) 543-4064</b></font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"><b>Portland, OR: (503) 236-3031</b></font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"><b>http://www.rainforestrelief.org</b></font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"><b>info@rainforestrelief.org</b></font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"><b>Church Street Station * PO Box 298 * NY, NY
10008-0298</b></font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"><b><br></b></font></div>
<div align="center"><font face="Skia" size="-1"
color="#000000"><b
>><><><><><><><><><span
></span
><><><><><><><><><<span
></span>><><><><><><</b></font></div
>
</body>
</html>