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Author Topic: Need advice on cedar "roof"  (Read 1121 times)

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Offline kelLOGg

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Need advice on cedar "roof"
« on: March 20, 2019, 09:01:28 AM »
I have built a little library for neighborhood kids to exchange books and am at the point of covering the roof to waterproof it. I had intended to use shingles but that will certainly change the look of it so I am asking for advice on how I could make cedar work for this purpose. The roof is now cedar boards 2" wide, 3/4" thick and 28" long and screwed close together but there is still visible gaps between them which aren't apparent in the pic. I have more thin (~0.5" thick) cedar which could be used on top as shingles if that is advisable. What to do: bite the bullet and go as planned with shingles or get creative?
 

 

 
 
Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, setter, tandem trailer, log arches, tractor, thumb tacks

Offline doc henderson

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Re: Need advice on cedar "roof"
« Reply #1 on: March 20, 2019, 09:06:43 AM »
could do thick epoxy but it will yellow and crack off eventually.  How about a sheet of thin copper sheeting on top, from a hobby/craft shop.  can get coated to keep bright or not and get green oxidized eventually.  Nice wood work and giving to the community.
timberking B 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.  2007 Chevy 3500HD dually, home built log splitter 18 horse 28 gpm with 5 inch cylinder and 32 inch split range with conveyor 12 volt tarp motor

Offline GeorgeFindlay

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Re: Need advice on cedar "roof"
« Reply #2 on: March 20, 2019, 10:04:28 AM »
Look at using a marine grade epoxy.

For an example, Google, 'West System'

From personal experience, this is a great product

Hope this helps
"Storms Never Last"

Offline alan gage

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Re: Need advice on cedar "roof"
« Reply #3 on: March 20, 2019, 10:19:53 AM »
Marine epoxy will succumb to UV radiation from the sun. All of it needs some protection from the sun. Spar urethane is what's typically used on cedar strip canoes to offer some UV protection for the epoxy. It lasts a long time but those boats aren't left out in the sun and elements all day and the spar urethane only offers moderate protection for the epoxy. In this application it seems like it would be fairly short-lived before the finish started to break down.

The best UV protection for epoxy is a solid paint.

Alan
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Online btulloh

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Re: Need advice on cedar "roof"
« Reply #4 on: March 20, 2019, 10:33:26 AM »
I vote for the copper sheet idea.  

Offline GeorgeFindlay

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Re: Need advice on cedar "roof"
« Reply #5 on: March 20, 2019, 11:40:24 AM »
As is, I've got two cedar strip canoes I made in 1988 and 1989, both covered with both the West System and spar varnish, which are still in great shape....no breakdown!

That's a lot of rough exposure!
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Offline doc henderson

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Re: Need advice on cedar "roof"
« Reply #6 on: March 20, 2019, 12:55:03 PM »
cedar strip canoes are great, but I have seen people sanding and reapplying finish, how long do you expect this to last 24/7 outside.  I assume you keep your boats inside when not in use.  also I believe that fiberglass is also laid over the wood and this would help stabilize the gaps in the wood.  I think this would work, but may require re-application every so often to look new again.   :P
timberking B 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.  2007 Chevy 3500HD dually, home built log splitter 18 horse 28 gpm with 5 inch cylinder and 32 inch split range with conveyor 12 volt tarp motor

Offline kelLOGg

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Re: Need advice on cedar "roof"
« Reply #7 on: March 20, 2019, 01:32:15 PM »
Actually, shingles are looking like the most practical option. If it starts leaking when I'm in my 80s I may not want to be the go-to guy for maintenance so a covering requiring only minimal skill may be best. Your suggestions would yield a much better looking product (which is what I asked for) but I have to think about future maintenance in a neighborhood where I don't live (this is a gift for a friend). I will talk it over with my friend.
Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, setter, tandem trailer, log arches, tractor, thumb tacks

Offline doc henderson

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Re: Need advice on cedar "roof"
« Reply #8 on: March 20, 2019, 02:59:29 PM »
hobby lobby sells pre-made craft shingles (not kraft singles lol)and I think they are cedar, do not forget your 40% off coupon.  You could spray spar urethane over them to hold the color.  good luck.
timberking B 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.  2007 Chevy 3500HD dually, home built log splitter 18 horse 28 gpm with 5 inch cylinder and 32 inch split range with conveyor 12 volt tarp motor

Offline kelLOGg

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Re: Need advice on cedar "roof"
« Reply #9 on: March 20, 2019, 04:39:16 PM »
I'll look into that. If it doesn't work I can have them with wine ;D
Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, setter, tandem trailer, log arches, tractor, thumb tacks

Offline curved-wood

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Re: Need advice on cedar "roof"
« Reply #10 on: March 21, 2019, 03:09:33 AM »
Nice looking construction, books are going to be happy. The problem with cedar shingles is that you have a part of the roof that is flat. The shingles need to have a good slope to be effective. You could put a membrane underneath. So may be the bottom with the good slope could be cedar and the flat top in another materiel. 
Well, if you want ''to get creative '' here is what I've done with a wood shed (not a very good photo ). The bottom is cedar clapboard and the top is  sheet metal left-overs, painted, tied with red electric wire, silicone between the sheets, screwed with metal roofing screws with a rubber washer.  Just playing around just to make me smile.
I have 2 other more ''serious '' building with a round ridge...not easy for a nice solution. It end up with sheet metal in roll cut to the right length. I dont know if it could be helpfull , but when I am designing something, I try to repeat some elements. In your case the only curve is in the ridge, so I will try to put some curves somewhere else for exemple rounding the 4 bottom corners, or if you put shingles do some wavy line with it; but that is a very personal point of view.
 


Offline Magicman

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Re: Need advice on cedar "roof"
« Reply #11 on: March 22, 2019, 10:46:09 AM »
I love the way you changed the flow and peaked the roof top up and added the gable.  8)
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Offline kelLOGg

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Re: Need advice on cedar "roof"
« Reply #12 on: April 04, 2019, 01:01:43 PM »
The family to whom I am giving the library gave me leftover shingles to match a studio in their back yard, so the final product is below with glass and magnetic locks installed.



 

 
Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, setter, tandem trailer, log arches, tractor, thumb tacks

Offline CaseyJ

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Re: Need advice on cedar "roof"
« Reply #13 on: April 11, 2019, 01:09:33 AM »
looks nice,  if you wanted to stick with wood roof,  google "steaming red cedar shingles"  after you apply heat and time and pressure they will bend and form.  research it.  it is very attractive.


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