Often asked: Roofing When Should I Replace Plywood?

Do I need to replace plywood on roof?

If you are getting a new roof, while you may not necessarily need to have the plywood decking replaced, you should have it carefully inspected by a qualified roofing contractor. The inspection should take place when the old shingles have been removed.

How do I know if my plywood is bad on my roof?

These common signs of damaged roof decking include:

  1. Visible holes in your roof.
  2. Signs of mold or mildew in your attic.
  3. Missing shingles.
  4. Roof sagging that’s visible from the exterior or interior.
  5. Curling and/or buckling shingles.
  6. Shingles that are wearing in a granular pattern.

How long does roof plywood last?

You can expect the wood roof sheathing of a home to last 100+ years. Although it should last for the life of the home, roof sheathing lifespan can be shortened by moisture penetrating it from both above and below.

Does roof sheathing need to be replaced?

Sheathing is an important element in supporting your home’s roof structure and subsequently, the building’s walls as well. With the old shingles removed, a contractor can inspect sheathing for damage, rot, or failing fasteners. If any of these are present, it’s best to replace the sheathing.

You might be interested:  FAQ: How Much Does Tolko Plywood Weigh?

How much is a new roof with new plywood?

Your price could vary depending on how much the roofing company charges for labor, but generally, you can expect to spend between $70 to $100 for each sheet of plywood. A 4 x 8 sheet of plywood covers about 32 square feet of roof area—and the average roof measures about 3,000 square feet.

Can you put new plywood over old on a roof?

The new plywood will have to be nailed to the rafters or roof trusses. But, with the old plywood left in place, it will be considerably more difficult to locate the rafters to ensure proper nail placement.

How much does it cost to replace rotted wood on a roof?

Most homeowners spend between $300 and $1,200 for a roof repair, or an average of $650-$850 to fix a roof related issue. Going beyond $3,500 is possible, but at that point a replacement roof could be your best bet.

Can you roof over wet plywood?

A: It is never a good idea to install a roof over wet plywood or any type of roof sheathing. Trapped water will boil when the sun heats the roof and the shingles will then have small pits where the steam finally escapes.

Is half inch plywood good for roofing?

Most Common Thickness For rafters spaced 20 or more inches apart, 1/2- or 5/8-inch plywood is recommended. The most common rafter spacing is 24 inches, and 5/8-inch plywood is recommended for that. It will support roof loads for most situations and is the standard for most roof applications.

You might be interested:  Often asked: How To Paint A Plywood Floor To Look Like Hardwood?

Does plywood need to be treated?

Treating plywood is required when you are placing it in an area that is exposed to the elements. Since the material is exposed protecting it will extend the life expectancy. The process requires only a few items purchased at your home store and can be accomplished by any homeowner. Apply the sealer to the plywood.

Do roofers replace rotted wood?

Once your professional roofers have fixed the underlying cause of the moisture, they will need to replace all the wood affected by the dry or wet rot. Here are the tools and materials they will use and a step-by-step guide on how they will complete the job.

How much does roof sheathing cost?

Divide the total roof area by 32 to get the number of sheets you will need to cover the roof. A typical 4 foot by 8 foot sheet of plywood covers 32 square feet. If your roof area is 1,600 square feet, 1,600 divided by 32 will mean you need about 50 sheets to cover the roof.

How often does roof sheathing need to be replaced?

As plywood lasts about 30 to 40 years and we run the risk of delamination and required replacement in a few years. The other two have stated that as long as the plywood is good and stays dry, it can last forever.

Leave a Reply

Your email address will not be published. Required fields are marked *