plywood deck over existing
Plywood Decking: A Good Alternative? | DoItYourself.com.Most of the decks you find will be made out of individual boards and not plywood decking. This is not to say that plywood decking does not make a good alternative to individual boards. plywood decking is essentially thin sheets of wood glued together to make a thicker sheet. The plywood decking is installed on top of the decking joists in one or more large sheets instead of individual pieces. The article that follows will address the question of whether plywood decking is a good ...
The Roof Deck and Tearing Off or Roofing Over4 - American Shingles.absorption by deck panels and thereby reduces the amount of swelling and shrinking of the wood. It is this wood movement that causes much of the buckling. If the roof is over a cathedral ceil- ing, it may be necessary to add a ventilated deck over the existing deck. Consult with an expert regarding alternatives such as vapor retarders, insulating materials, and beneath-the-deck ventilation. If roof sheathing panels (plywood, OSB) will be stored at the site for a time before installation, ...
Comparison of Retrofit Systems Over Existing Metal Roofs.3 Apr 2017 ... Example of a single-ply over metal retrofit assembly. Single-Ply over Metal: Single- ply roof systems are also lightweight and utilized for retrofits over existing metal roofs [Figure 2]. Many single- ply membrane roofs rely on the existing metal roof to function as a structural deck for support and attachment of the roof system, including board insulation, as well as for support of live, snow, and wind loads, and for providing stability to the roof support members. What are the ...
Econodek Vinyl Decking FAQs for Vinyl Membrane Decking.Please consult local building codes and a building specialist in your area for further details on how to build a waterproof deck. You can also visit our page entitled Tips On Building Your deck. Can I install Econodek vinyl over a previously coated or painted plywood deck surface? No We do not recommend installing over an existing deck coating due to unknown chemical incompatibilities between the old coating and the new Econodek vinyl decking materials. There are so many ...
Value of 1x4 Lathing over Plywood Deck | Ask The Experts Forum ....We are in the process of removing the old composition shingle roof and having a clip-on standing seam roof installed. I think our installation is fairly simple and the contractor is competent, so our issues are minimal. But there are a couple of things we don't understand and need expert help on. We have a very simple gable end house with a 7/12 and 5/12 pitch roof on each side. The attic has free flowing ventilation using continuous soffit vents and a ridge vent. The deck is plywood and ...
Should You Lay Plywood Over Plank Sub Floor? - Wood and Beyond.1 Sep 2014 ... Install a layer of at least ½ or preferably 5/8 ply over the existing planks. This is particularly important if your old sub floor has lumps and bumps in it. If you don't respect this thickness of ply, then you're highly likely to see rises and falls in your new flooring. If at all possible, aim to sand your existing planks if they are showing significant signs of old glue or materials that need to be removed. When you fix the ply to the old floor, you should avoid fixing it to the joists.
How To Replace Shingles And Roofing Plywood - Roofing Calculator.18 Oct 2017 ... This post will discuss how to install shingles on a roof correctly, to avoid future problems. The most important steps in the process are to: 1. Tear off the old roofing material. 2. Repair plywood or sheathing. Unfortunately, many homeowners neglect to do this in an effort to save money, without realizing that they are running a very high risk of ending up with a bad roof.
code compliance - Can you skin over an existing roof deck that is ....It hard to say without seeing the structure but it sounds like the decking was under engineered for the weight of asphalt shingles to begin with. You could put the ... You're also leaving extra weight on the roof and if you are already feeling degradation between the rafters, you may ultimately end up with the same problem just thicker. If you are going ... I'm also a fan of tearing off, but unless the plywood is rotten (in the falling apart sense), I would probably just skin over it.
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? The keyword here is solid. It used to be standard to use shiplap, 1 boards, tongue & groove, or other boards for the roof deck. These 8 to 12-inch wide boards were nailed together tight. plywood_1 When the roof was first nailed on, of course all the nails were in solid wood. But the lumber was not usually kiln dried; as wood dries it shrinks. As shrinkage is from 5 to 10 percent, gaps of ½-inch or more are ...
How to Install New Sheathing Over Old Spaced Sheathing for Re ....14 Jul 2016 ... http://www.homebuildingandrepairs.com... Click on this link for more information about roofing repairs, home building and remodeling. This video will provide you with a few ideas and methods I used in the past for installing new roof sheathing like plywood or oriented strand board over spaced one by six roof sheathing that was originally designed for wood shingles and you're going to be installing tile or composition shingles on your new roof. Always check with your ...
Decking/Sheathing Case Study - Donan - Forensic Engineering ....1 Oct 2014 ... They also state that Roof decks must meet local codes. As stated earlier, the deck complies with the codes. The deck Requirements document does not address board widths greater than 6, which is likely an intentional oversight, since the document purports to address existing decks. According to a strict interpretation of these documents, GAF shingles cannot be used over the unmodified 1×8 decking on this house without the likelihood of voiding the warranty.
Do I need to put ply over shiplap before installing ... - This Old House.23 Apr 2016 ... Re: Do I need to put ply over shiplap before installing new composition shingles. In my area, GAF is one common shingle choice, and their instructions are very similar to Malrkey Roofing: "Use minimum 3/8" (10mm) plywood or OSB decking as recommended by APA-The Engineered Wood Assn. Wood decks must be well-seasoned and supported having a maximum 1/8" (3mm) spacing, using minimum nominal 1"(25mm) thick lumber, a maximum 6" (152mm) width ...
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