[Greenbuilding] Decking a Boathouse Roof

[Lynelle Hamilton]

Hi Jason,

Thank you! I'm a Canuck, so hoping that they're also here.  Any brand 
names you can think if?

Lynelle


On 8/25/2016 9:54 AM, Jason Holstine wrote:
>
> There are any number of composites made with recycled plastics and/or 
> wood pulp; very long-lasting, no/low maintenance, and lacking PVC.  
> Look for hollow-core versions for lighter weight.
>
> *From: *Greenbuilding <greenbuilding-bounces at lists.bioenergylists.org> 
> on behalf of Lynelle Hamilton <lynelle at lahamilton.com>
> *Reply-To: *Green Building <greenbuilding at lists.bioenergylists.org>
> *Date: *Thursday, August 25, 2016 at 8:24 AM
> *To: *Green Building <greenbuilding at lists.bioenergylists.org>
> *Subject: *Re: [Greenbuilding] Decking a Boathouse Roof
>
> Thanks, John.
>
> 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.
>
> Lynelle
>
> On 2016-08-25 12:58 AM, John Salmen wrote:
>
>     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.
>
>     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
>
>     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.
>
>     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.
>
>     *From:*Greenbuilding
>     [mailto:greenbuilding-bounces at lists.bioenergylists.org] *On Behalf
>     Of *Lynelle Hamilton
>     *Sent:* August-24-16 9:28 PM
>     *To:* Green Building
>     *Subject:* [Greenbuilding] Decking a Boathouse Roof
>
>     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?
>
>     Many thanks in advance.
>
>     Lynelle
>
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