do i need plywood over tongue and groove roof decking

Roofing: Why do we need plywood over our old solid sheathing

We are often asked, why do we need plywood over our old solid sheathing? ... to use shiplap, 1″ boards, tongue & groove, or other boards for the roof deck.

Roof Diaphragm - Sheathing over T&G decking - Wood design and

The IBC doesn't recognize 2x tongue and groove decking (we have ... that placing Structural I plywood or OSB over the top of the decking can...

What You Need to Know about Roof Sheathing - The Plan Collection

22 Nov 2016 ... Tongue-and-groove boards were used for decades prior to the widespread adoption of ... T&G roof decking, however, looks classy and rich. ... It can be installed over plywood or OSB sheathing, but the most common use is on...

Roof Sheathing - Forum - Bob Vila

5 Jul 2004 ... The new plywood thickness should be at least equal to the exusting plywood thickness ... You have two reasons for replacing the plywood. ... When you put tongue and groove on, what happens when the sheathing expands ... of decking) has wood changed over the years or does it still expand abd contract...

roof - InterNACHI Inspection Forum

Or they could place OSB or plywood over current planking. ... would not need to breathe like you would have on Wood Shingles. .... The picture looks to me like a tongue and groove roof deck typical of 50s construction.

5 Steps to Proper Roof Sheathing Installation | Pro Builder

Plywood and OSB are ideal materials for roof sheathing systems ranging ... Trusses or rafters should be shimmed as necessary to provide a level nailing surface. ... Stand on the panel over the framing near the fastener location to ensure ... roof sheathing panels, panel edge clips, or panels with tongue-and-groove edges. 7.

Roof Sheathing Materials | Roof Decking Guide - ImproveNet

Sheathing is made of roofing plywood & other materials. ... Tongue and Groove ... Step sheathing can then be applied over the solid sheathing as needed.

roofing - Is it normal to see nails coming through the roof decking

8 Jan 2013 ... The plywood can and is expected to take a bit of damage over time and .... Many older ranch style homes have tongue and groove decking that...

Roof Sheathing - Free-Ed.Net

Manufactured wood fiber roof decking is also adaptable to exposed ceiling ... When tongue-and-groove boards are used, joints may be made between rafters. In no case, however, should the joints of adjoining boards be made over the same ... Finally, you have to consider allowable dead and live roof loads established by...

Plywood Design and Application Guide - PFS·TECO

commercial construction for well over 50 years and has developed a reputation as a ... similar information for plywood used as wall and roof sheathing. Section 4 provides .... Group 1 have the highest mechanical properties, whereas species in Group 5 ..... Panel edges should be tongue-and-groove edged or supported on...

Slate Roof: 3/4" plywood deck vs. 3/4" solid tongue and groove pine

4 Jul 2013 ... Chris Verrone, a slate roofing expert, discusses the difference between a 3/4" plywood deck vs.

Deck Preparation | Dayus Roofing

“Can you build over-the-top of my existing roof or does it need to be removed? ... This type of decking is made from wood strands and a waterproof resin which allows ... roofs often feature the 1X6 boards, which meet in tongue-in-groove joints.

Plywood vs. OSB - Green Building Advisor

wood species can be used for OSB, not just softwoods, as is the case ... Despite the strong opinions, contractors and homeowners have been adopting OSB...

Metal Roof Installation Manual - Metal Construction Association

Chapter 6: Roof Deck Substructures .... installed over one, if desired. Solid deck ... All roof deck plywood should be ... boards often have a tongue and groove.

How to Clean Mold on Building Framing Lumber or Plywood

... plywood sheathing, tongue and groove subfloor or roof decking Guide to Cleaning ... the mistake of re-using the same moldy rag over and over on all surfaces. .... How Much Mold Must Be Removed - How Clean Do Surfaces Need to Be?

How to Install a Subfloor on Joists | Ana White Woodworking Projects

13 Oct 2011 ... ... and I thought the very next day I'd be getting a sun tan on a roof top deck. ... For subflooring, you use tongue and groove plywood. ... But to start off, we will need to remove the tongue so the plywood is ... My rooftop sun deck fantasy would not come true on this day. ... BROWSE OVER 1000 FREE PLANS.

It All Starts with the Roof Deck - Buildings

While reflective single-ply roof membranes and high-thermal roof insulations seem ... and critical information about the structure and roof may have been lost over time. ... If the roof needs to be patched, can sections of the deck be safely removed ... At one time, the use of heavy timber tongue-in-groove decking was common.

The Long and Short of Wood Roof Systems - WoodWorks

30 Sep 2014 ... Participants will be familiar with the variety of roof ... systems can be built from all wood and hybrid wood structural ... Tongue and Groove Roof Decking ..... Buildings required to have surrounding public ways and/or yards. ... Often 7/16” sheathing may be applied over 2x deck to increase diaphragm strength...

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