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Posted by David Jensen on September 6, 2006, 3:44 pm
I have a home that I have added a 2nd story porch to. Detailed and related
pictures can be seen at
http://www.flickr.com/photos/19579422@N00/tags/porch/. It is a wooden porch
with 3/4" plywood over 2X8 joists on 16" centers on a 6'+ span (quite
sturdy, in other words). The plywood has been carefully flashed around the
perimeter and than waterproofed with a torch-down granulated roofing system.
I am trying to figure out the best way to put 1/2" brick pavers over the
granulated torch down material. Can I use thinset and attach the tile
directly to the torch down? Would I need to glue down a backer material to
the granulated roofing first (I don't want to penetrate the roofing
material)? This is in central Florida so freeze/thaw is not an issue. Rain
is certainly an issue here and there is 1" of slope on the porch to shed the
water. Any ideas as to the best way to approach this would be appreciated
greatly.
David Jensen
Change the xyz in my email address to MJ for my real email address. Thanks.
Oh yes, if you've looked at the pictures, the pink shutters have to go, I
agree.
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Posted by Bob Morrison on September 6, 2006, 5:31 pm
In a previous post David Jensen wrote...
> I have a home that I have added a 2nd story porch to.
>
You need to elevate and separate the pavers from the roofing using
pedestals or other support mechanism. Here's a link to a typical product:
http://www.roofblok.com/accessories.htm
--
Bob Morrison, PE, SE
R L Morrison Engineering Co
Structural & Civil Engineering
Poulsbo WA
bob at rlmorrisonengr dot com
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Posted by David Jensen on September 7, 2006, 11:33 am
Bob,
Thanks for your response. Could you please help me understand why the
pavers would need to be elevated? I've seen jobs here in central florida
where tile was put down and not elevated. I don't know how long it will
last, but I know that I've seen it in some of the nicest developments in
Orlando and elsewhere (not that that means that it is OK, of couse).
Do you have any other suggestions, in the event that I can't find some good
way to elevate the floor? I have contacted roofblok and they are sending me
samples.
Thanks again,
David
> In a previous post David Jensen wrote...
>> I have a home that I have added a 2nd story porch to.
>>
>
> You need to elevate and separate the pavers from the roofing using
> pedestals or other support mechanism. Here's a link to a typical product:
>
> http://www.roofblok.com/accessories.htm
>
> --
> Bob Morrison, PE, SE
> R L Morrison Engineering Co
> Structural & Civil Engineering
> Poulsbo WA
> bob at rlmorrisonengr dot com
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Posted by Bob Morrison on September 7, 2006, 2:07 pm
In a previous post David Jensen wrote...
> Thanks for your response. Could you please help me understand why the
> pavers would need to be elevated? I've seen jobs here in central florida
> where tile was put down and not elevated. I don't know how long it will
> last, but I know that I've seen it in some of the nicest developments in
> Orlando and elsewhere (not that that means that it is OK, of couse).
>
David:
The purpose of elevating the pavers is to improve drainage and to keep as
much of the paver off the roof surface as possible. Also, elevating the
pavers allows one to put in a flat, I.e, non-sloped, walking surface while
maintaining a sloped drainage surface on the roof below.
--
Bob Morrison, PE, SE
R L Morrison Engineering Co
Structural & Civil Engineering
Poulsbo WA
bob at rlmorrisonengr dot com
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Posted by RicodJour on September 7, 2006, 5:23 pm
David Jensen wrote:
>
> Thanks for your response. Could you please help me understand why the
> pavers would need to be elevated? I've seen jobs here in central florida
> where tile was put down and not elevated. I don't know how long it will
> last, but I know that I've seen it in some of the nicest developments in
> Orlando and elsewhere (not that that means that it is OK, of couse).
http://www.compasscontracting.com/services/plaza-deck_and_garden.htm
http://www.envirospecinc.com/
http://www.westile.com/commercial.asp?img=3&cat=comm
The torch down probably makes the use of pedestals a required item.
Was the intention to go with pavers from the start or are you just
looking for a more durable walking surface?
R
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