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-   -   posting tar paper (http://www.diychatroom.com/f9/posting-tar-paper-98029/)

amakarevic 03-11-2011 10:52 AM

posting tar paper
 
this sounds rudimentary but is there any specific things that are not completely intuitive about posting tar paper on a roof? it is a small shed (11x9). i was just gonna use asphalt felt 15 (as opposed to 30, is that OK?) and post rows going vertical (i.e. perpendicular to the ridge beam) and lap each row by maybe an inch or so to avoid having exposed slots. was gonna use a swing stapler and 0.5" staples. does this sound like the right approach?

thanks

12penny 03-11-2011 11:03 AM

...is there some advantage to running it vertical?

amakarevic 03-11-2011 11:42 AM

Quote:

Originally Posted by 12penny (Post 607292)
...is there some advantage to running it vertical?

i was thinking it would be better for joints between rows to run vertical to avoid possible leakage between them but then again, if you run them horizontal and lap the next row up over the one below, that might even be better.

DexterII 03-11-2011 11:50 AM

Horizontal, with minimum 4" lap, and your 1/2" staples, and you'll be fine. Just be sure to keep it flat to the sheathing as you roll it out, so that you don't have humps under your shingles. I seem to recall you asking about ice guard in an earlier post, and, again, if there is enough for your shed in a roll, you could just run that up the roof, in place of felt. If you do that though, don't staple it.

amakarevic 03-11-2011 12:04 PM

thanks, is felt #15 OK ?

waterman1971 03-11-2011 12:04 PM

We have torn them off years ago where the roofers followed the valley lines?

amakarevic 03-11-2011 12:06 PM

Quote:

Originally Posted by waterman1971 (Post 607336)
We have torn them off years ago where the roofers followed the valley lines?

huh? torn what and what valley lines?

DexterII 03-11-2011 12:09 PM

You could ask your local building authority, but, personally, I would be more inclined to use 30, simply because it is a shed, and therefore the tendancy down the road may be to extend replacement of it as long as possible. Not that 30 is necessarily going to help at lot at that point, but it might. Just an opinion.

seeyou 03-11-2011 01:11 PM

Quote:

Originally Posted by amakarevic (Post 607334)
thanks, is felt #15 OK ?

#15 is fine. Run it horizontally.

tcleve4911 03-11-2011 02:11 PM

Look at the directions on the shingle wrapping.

They always show tarpaper and they always show it run horizontally.:thumbsup:

Gary in WA 03-11-2011 04:57 PM

Be sure to use roofing felt for roofs rather than tar paper for siding. Many don't know or think there's a difference; http://www.fortifiber.com/pdf/fortif...sk_vs_felt.pdf

http://www.dickseibert.com/martin.pdf

Gary


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