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<p><font face="Helvetica, Arial, sans-serif">Thanks, John.<br>
</font></p>
<p><font face="Helvetica, Arial, sans-serif">I appreciate your
perspective. I had a rooftop deck at my last house and used it
a lot, so am pretty certain that this one will get used. I too,
hate the thought of vinyl, but it seems that it's the simplest
(and probably the least resource intensive) response and will
address the pressing issue...the leaking roof. Just wish there
was an alternative to vinyl for the decking that would be as
waterproof and durable.</font></p>
<p><font face="Helvetica, Arial, sans-serif">Lynelle</font><br>
</p>
<br>
<div class="moz-cite-prefix">On 2016-08-25 12:58 AM, John Salmen
wrote:<br>
</div>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">The
simplest roof assembly is structure (roof joists/sheathing
of some sort), insulation (type 1 eps) roof board (typically
fiberglass/ashphalt ½” thing – mechanically fastened), two
part roof system on top of that (screw fastened base sheet/
adhered top sheet). Every roof supply company has the same
basic system – can look at soprema. Will run about 5 to 8
can per square foot in cost depending on local contractors
and size of roof/ details etc. That is a current flat roof –
not a vinyl deck – vinyl deck will be comparable and
probably simpler.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">The
roofing weight is minimal in itself as most roofs would
carry at least 10llbs per foot for dead load (sheathing,
ceiling drywall, roofing) – a wood deck added on top would
add about 15lbs per sq. ft. dead load extra so you would
need to look at the framing and see if it meets current
environmental load requirements (things have changed) and if
that could be added. Carpenters love to make decks as they
get to rebuild them 10 years later<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Sheathing
the deck in plywood and then putting a vinyl deck surface is
crappy but would keep the weight load down and use less
materials so environmentally is probably a better solution –
fewer trees used. They tend not to leak except at odd
upright seams and will outlast wood finishes and replacement
is better than replacing a wood deck.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">I
hate giving this type of advice as I know environmentally
the vinyl deck solution is actually less destructive but is
a horrible solution. As a designer I would ask if anyone
would ever use the deck.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US"> Greenbuilding
[<a class="moz-txt-link-freetext" href="mailto:greenbuilding-bounces@lists.bioenergylists.org">mailto:greenbuilding-bounces@lists.bioenergylists.org</a>]
<b>On Behalf Of </b>Lynelle Hamilton<br>
<b>Sent:</b> August-24-16 9:28 PM<br>
<b>To:</b> Green Building<br>
<b>Subject:</b> [Greenbuilding] Decking a Boathouse Roof<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p><span
style="font-family:"Helvetica","sans-serif"">I
have a boathouse on my property with a flat roof that,
surprisingly. leaks. I would like to put a deck on the
roof, as the structure is strong enough to support it.
However, I am stumped as to the best material to use to get
a durable and waterproof surface that is walkable. My
carpenter suggests rubber membrane, the styrofoam, then a
wood deck, but I have concerns about the weight, plus the
weight of folks on it. As well, maintenance might be an
issue. Duradeck, etc are seem hardly to be green
alternatives. Any ideas, folks?</span><o:p></o:p></p>
<p><span
style="font-family:"Helvetica","sans-serif"">Many
thanks in advance.</span><o:p></o:p></p>
<p><span
style="font-family:"Helvetica","sans-serif"">Lynelle</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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