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Treehouse Roof Coating - 2/12 flat roof

10K views 18 replies 6 participants last post by  jjangell 
#1 · (Edited)
I'm building a treehouse for my son in our Backyard.

I am going to use standard 3/4 plywood for the roof and would use a suggestion as to what I might coat the roof with to assist in standing up to the rain etc...

I do not want to spend a fortune on this...Would appreciate any and all suggestions.
 
#6 ·
My uncle used to put roll roofing on his garage. It's like asphalt shingles, but in the form of a roll, like felt. You just nail it down and put roofing patch on the nail heads.

I made a dog house about a decade ago and got a piece of corrugated metal roofing and screwed it on with decking screws. It's almost totally flat, and it seem to be holding up. I put liquid nails on the screw heads and painted it all with house paint.
 
#13 ·
I can't say for sure what would bother you or someone else in your family, but I kind of doubt you'd really notice it -- it's small, and it's under a tree.

My shed has metal roofing over open purlins and I don't really hear it unless I'm standing inside it. Even then it's only a certain type of rain -- large drops with space between them, if you know what I mean... We put metal on the house and if you stop and think about it you might be able to tell that it sounds different when it's raining, but it's not the kind of thing that you actually hear (like a truck driving past, or a dog barking).
 
#8 ·
Be careful of your roof size, including overhangs: One-story detached accessory buildings used for greenhouse, tool or storage shed, playhouse or similar uses, provided:
1. The projected roof area does not exceed 120 square feet; and
2. The building is not placed on a concrete foundation other than a slab on grade.
From: http://www.seattle.gov/dpd/Permits/FAQ/the_basics/default.asp#questionone

And the side variance may be 3' to roof, check it out or an upset neighbor could report it and you tear it down or shorten the roof.
Be safe, Gary
 
#9 ·
Be careful of your roof size, including overhangs: One-story detached accessory buildings used for greenhouse, tool or storage shed, playhouse or similar uses, provided:
1. The projected roof area does not exceed 120 square feet; and
2. The building is not placed on a concrete foundation other than a slab on grade.
From: http://www.seattle.gov/dpd/Permits/FAQ/the_basics/default.asp#questionone

And the side variance may be 3' to roof, check it out or an upset neighbor could report it and you tear it down or shorten the roof.
Be safe, Gary
Gary,

Thanks for the information...You certainly know your stuff...I do appreciate it.

Do you work in construction in Seattle?
 
#10 ·
PHP:
I think you would be fine.If you used ice and water under shingles,it would never leak,but if your on a budget I would use 30#.I wouldn't do it on a house,but it is a treehouse.
JohnK- Are you saying that you wouldn't use the 30# felt and shingles on a house? What about the ice and water under shingles on a house with a 21/12 roof?
 
#12 ·
PHP:
I think you would be fine.If you used ice and water under shingles,it would never leak,but if your on a budget I would use 30#.I wouldn't do it on a house,but it is a treehouse.
JohnK- Are you saying that you wouldn't use the 30# felt and shingles on a house? What about the ice and water under shingles on a house with a 21/12 roof?
Yes I would use 30# on a house,just not on a 2/12.I'd use ice and water on that pitch,I just see no reason for that on a pitch like that.
 
#11 ·
No, I'm in Tacoma. With the home building economy as such, the City and County are looking for untapped sources of revenue......
Be safe, Gary
 
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