Latest Discussions : Roofing & Siding


09:27PM | 10/22/14
I have a 1959 house which has no plywood over existing wood so i can see tar paper in some spots do i need to add plywood before getting new shingles or do i just replace existing bad wood and put new shingles over or do i need plywood. Brian


06:15AM | 10/23/14


11:50AM | 10/25/14
Yes my roof sorry

David, Moderator

11:15PM | 10/26/14
Member Since: 11/15/13
264 lifetime posts
Many of the roof structures constructed around this time were covered using sheeting boards. Normally these were random sizes such as 1x4, 1x8, and 1x12.
The normal procedure when replacing shingles is to replace only boards in bad condition.
If the area is small, this would be done using sheeting boards. Larger areas are usually repaired using plywood.
Having all the sheeting boards removed and replaced with plywood would be very expensive.
Hope this helps
Thanks for stopping by


11:55AM | 10/27/14
Actually they want to add plywood over exsisting tongue and groove


07:16PM | 10/27/14
Yes that's what they did to my house. All new plywood over the existing wood(all the old layers of roofing and paper,everything was stripped off)tar paper, ice shield three feet up all around,new flashing everywhere needed,then all new shingles. $$$


07:20PM | 10/27/14
Also you'll probably find they aren't tongue and groove but deck boards that are spaced apart. That's why you need all new plywood.

Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply choose button


Post new button or Login button