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Old 08-13-2014, 09:40 PM   #1
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fix this roof/garage


Hi, Please see the pic I attached. I hope this can bring you a giggle....

You are looking at a roof of a garage (30'X40'). (ya, not kidding) The interior actually was used for some other unknown purposes as there are small separate stalls of maybe 10'X10', with rough 2X4 frames and rotten chipboard walls.

Over the years, it has been neglected. Then I guess the roof starts to leak, then some genius decided to throw 4X8 chipboards on top of the roof, literally, to fix the leaking. Then more and more chipboards got thrown on top of each other, literally...

Thus the picture you see now.

I am the one who is going to clean it out now , yearh..... OK, question: how do I go about it.

I of course need to deal with the roof first. Problem: The roof has leaks probably in different areas, and the whole roof may be soft. How can I get on the roof and take off the chipboards one by one w/o falling into a broken section of the roof?
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Old 08-13-2014, 09:57 PM   #2
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stand on what you know is a good surface, take up what you can reach from there.
get 2 sheets of 3/4 plywood. put 1 on the cleaned up area. pick up what you can reach from there. when you can fit the other sheet, put it down. there move the sheets as you clean. also make sure the rafters are good.
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Old 08-13-2014, 10:26 PM   #3
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Need to add:

Restriction: I can't knock the whole thing down and rebuild. The city has a rule: If the old garage is knocked down more than 60%, one can not have the garage anymore. So, I need to keep the garage mostly there, to fix it, and also, I need to keep the garage mostly there, to redo the foundation of it, which will be in another thread.
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Old 08-20-2014, 04:22 PM   #4
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Quote:
Originally Posted by Fix'n it View Post
stand on what you know is a good surface, take up what you can reach from there.
get 2 sheets of 3/4 plywood. put 1 on the cleaned up area. pick up what you can reach from there. when you can fit the other sheet, put it down. there move the sheets as you clean. also make sure the rafters are good.
What if I can feel that some rafters are not good?
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Old 08-20-2014, 05:34 PM   #5
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Is the inside of the garage open so you can see the rafters?

You must be careful,that chip board is rotten---you might want to demo the sheeting from inside the garage-----and not spend time on the roof itself--
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Old 08-20-2014, 11:07 PM   #6
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Ask the local fire department if they will burn it down for you and leave the rest of the structure.

Maybe they could use the practice.


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Old 08-21-2014, 11:11 AM   #7
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if the rafters have been compromised why not remove the roof and rebuild. this would be a repair not a tear down.
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Old 08-21-2014, 11:22 AM   #8
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Start at the edge and remove what you can reach. Strip it down to the rafters. Then move the ladder inside and work between the rafters, never having to climb on the roof. Then you can reroof, either sheeting and flat roof materials or metal roofing. That roof is too flat for shingles.
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Old 10-10-2014, 11:34 AM   #9
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It may be hard to see , but the roof as is is rather wavy. Does that mean the Chipboards are pretty much rotten? So definitely work from the edge and from inside?
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Old 10-10-2014, 12:37 PM   #10
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wavy or rippled roofs usually indicate the sheathing has excessive deflection in between the rafters. This is usually caused by either failure of the sheathing, or too thin sheathing used.

I never specify anything less than 5/8" APA Performance Rated Sheathing
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Old 10-11-2014, 04:15 AM   #11
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If they are rotten then you need to replace or repair these and fix that problem
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