Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Roofing/Siding

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 06-07-2012, 03:02 PM   #1
Newbie
 
Join Date: Jun 2012
Posts: 2
Share |
Default

Add plywood to older house first?


In southern CA, older 1957 valley home with 1 x 6 slats and 3 layers of shingles on pitched roof. Is it important for me to replace or add plywood before adding new roof shingles? Two roofers said no, but some homeowners say yes. why? What's the reasoning for and against?

sll6568 is offline   Reply With Quote
Old 06-07-2012, 03:18 PM   #2
Member
 
Join Date: Jan 2011
Location: Illinois, Chicago area
Posts: 305
Default

Add plywood to older house first?


That will be way too much weight. You need to remove those 3 layers of shingles.

packer_rich is offline   Reply With Quote
Old 06-07-2012, 04:13 PM   #3
Newbie
 
Join Date: Jun 2012
Posts: 2
Default

Add plywood to older house first?


Sorry, I wasn't clear. I'll be removing all shingles, so before I put on the new layer, do you recommend ripping off exisiting 1 x 6 slats and replaceing with plywood? Or laying plywood over the 1 x 6 wood slats? Or is it not worth the time and expense. I'm not sure why some think this should be done. So any insight you could offer....
sll6568 is offline   Reply With Quote
Old 06-07-2012, 05:41 PM   #4
Member
 
Gymschu's Avatar
 
Join Date: Dec 2010
Location: Eastern Ohio (heart of Appalachia)
Posts: 2,821
Default

Add plywood to older house first?


I can see why they would want to replace those 1 X 6 slats. I have the same thing on my house and those slats were dried out, nails were popping up, much of the wood was cracked leaving some gaping holes.........I would guess that installing new plywood gives a sound surface for nailing. I would do it. In my case I tried to patch the bad areas and I would have been farther ahead to have just replaced ALL the roofing slats with plywood.........
Gymschu is offline   Reply With Quote
Old 06-07-2012, 05:57 PM   #5
Framing Contractor
 
Join Date: Feb 2009
Location: NE Ohio
Posts: 1,094
Default

Add plywood to older house first?


Probably don't have to remove the 1x6. We generally go over that with plywood, making sure to use longer nails so they penetrate into the framing. I would only remove the boards if they are rotted. Usually some near the eaves and sometimes near the chimneys will be rotted.
sixeightten is offline   Reply With Quote
Old 06-07-2012, 07:39 PM   #6
Member
 
Join Date: Jan 2011
Location: Illinois, Chicago area
Posts: 305
Default

Add plywood to older house first?


Quote:
Originally Posted by sixeightten View Post
Probably don't have to remove the 1x6. We generally go over that with plywood, making sure to use longer nails so they penetrate into the framing. I would only remove the boards if they are rotted. Usually some near the eaves and sometimes near the chimneys will be rotted.
DUDE check your post count!!!
packer_rich is offline   Reply With Quote
Old 06-07-2012, 11:37 PM   #7
Residential Designer
 
AndyGump's Avatar
 
Join Date: Sep 2010
Location: Orange County CA.
Posts: 1,287
Send a message via Skype™ to AndyGump
Default

Add plywood to older house first?


Quote:
Originally Posted by packer_rich View Post
DUDE check your post count!!!
Ha ha, here it is for posterity.



On another note, I have always left the skip sheathing (that's the 1 x 6 slats, spaced about 4" apart) on and sheeted over them. You have the option of removing them and applying a radiant barrier sheathing on as well.
Radiant barrier is not a requirement usually for residential in California but it doesn't cost much more to get the sheathing with the radiant barrier coating on it than for the standard stuff.

Andy.
Attached Images
 
__________________
Residential Drafter/Designer
www.draftinginoc.com
AndyGump is online now   Reply With Quote
Old 06-24-2012, 02:13 AM   #8
Newbie
 
Join Date: May 2012
Posts: 8
Default

Add plywood to older house first?


I just did this on my detached garage roof. It added extra time and cost, but I'm glad I did it.

What was recommended to me, was to add 3/8" ply over the plank roofing. As mentioned by Sixeightten, use longer nails to hold the ply through the planks and to roof joists. Spotting the joists between the decking gaps is pretty easy. After a while, I started marking the joist locations at the edges of the ply at it was going down. This made adding the nails really easy with no "extra" holes.

Here's what I can tell you after doing this...
I wish it was done earlier. Tearing off the original shingles and felt made a mess of the inside of my garage. Lots of granuales from thE original shingles fell between the boards and into the garage. I'M STILL CLEANING UP THE MESS IT MADE. That won't happen if it needs a new roof in the future.

Another advantage is that it makes for a nice flat surface to install your new felt and shingles on.

Good luck to you. Hope this helps.
nil8r is offline   Reply With Quote
Old 06-24-2012, 07:44 AM   #9
Doing This Way Too Long
 
Join Date: Jun 2008
Location: North Idaho
Posts: 1,140
Default

Add plywood to older house first?


As long as your existing deck is sound and there are no gaps between the existing decking there is absolutely no reason you need to resheet it.

OldNBroken is online now   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Investigating grounding for an older house highdeserthome Electrical 16 01-11-2012 05:16 PM
older female plumbing an old house from the 40's Fern Senti Plumbing 1 04-19-2011 12:41 AM
Help installing dimmer switch!! older house catpace Electrical 1 04-18-2011 03:05 PM
Rewiring older house WillK Electrical 12 10-13-2010 01:49 PM
Attic Fan AND Whole House Fan PapaGnome HVAC 6 02-15-2009 02:28 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.