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JTNY113 04-14-2011 08:52 PM

Installing a new roof/rafers for my detached 2-car garage
 
Hi all,


The roof on my 2 car garage is coming apart due to a termite infestation. The rafters and woodplanks are being eaten and has caused water to leak through.

I have contacted a few contractors to estimate the job but I have questions regarding what type of rafers I should use and what type of roofing material would be ideal for a garage in NYC.

Specs: 20x24 flat roofed detached garage.

Can anyone advise one:

1) Whats the ideal roofing material? Modified Bitumen/Rubber?

2) I have 14 rafters/joists that need to be removed. They are about 4x10x24. I am concerned about termites and would like to know what type of wood would be "termite proof". I have looked into Parallam Plus, which is a LVL wood but am not sure if it is overkill. Most contractors offered to use Doug-fir wood which I believe is untreated.

Any tips/suggestions would be appreciated.

THanks in advance!

1985gt 04-14-2011 09:54 PM

Quote:

Originally Posted by JTNY113 (Post 629667)
Hi all,


The roof on my 2 car garage is coming apart due to a termite infestation. The rafters and woodplanks are being eaten and has caused water to leak through.

I have contacted a few contractors to estimate the job but I have questions regarding what type of rafers I should use and what type of roofing material would be ideal for a garage in NYC.

Specs: 20x24 flat roofed detached garage.

Can anyone advise one:

1) Whats the ideal roofing material? Modified Bitumen/Rubber?

Depends. If there is no slope at all I would use a tapered insulation to give it some slope. IMO hot moped roofs are the best and would be the most expensive. Torch downs are good. For single ply roofs EPDM is good, TPO is better, and PVC is the best. For an unconditiond garage Id us a tapered ISO system with EPDM. You will spend more for the insulation and the EPDM will be cheaper then the rest. Mostly just try and find the best roofing contractor you can. Install on any of the products is as important as the material its self.

2) I have 14 rafters/joists that need to be removed. They are about 4x10x24. I am concerned about termites and would like to know what type of wood would be "termite proof". I have looked into Parallam Plus, which is a LVL wood but am not sure if it is overkill. Most contractors offered to use Doug-fir wood which I believe is untreated.

Im not sure if your just replacing a few of them if termite proof is that important since the rest of the garage will be wood anyway.

Any tips/suggestions would be appreciated.

THanks in advance!

I would just use what ever will span that distance.


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