Should I Resheet my roof?

Your New Roof

The most efficient and cost effective option is to resheet directly over the shiplap with exterior grade plywood. This is acceptable by code, as well as the roofing manufacturers. Your new composite shingle will be installed securely to the new solid surface and last for years leak free.

Is re roofing a good idea?

If you are a homeowner with minor issues or leaks, which typically occur as the roof reaches the end of its lifespan, but the roof is in overall good shape, re-roofing may be for you. If you only have one layer of asphalt shingles on your roof, you may also be a good candidate for re-roofing.

When should I Redeck my roof?

If you are having your roof changed from wooden shakes or shingles to asphalt shingles, you will need to redeck over the old decking to bring your home up to code.

Can you put new plywood over old on a roof?

As long as the new plywood itself can span the distance and carry the roof, wind, seismic and snow loads for your region, adding new ply over old is just fine. The new plywood thickness should be at least equal to the exusting plywood thickness.

Should I replace my roof sheathing?

Especially with older homes, existing roof sheathing can be dried up and damaged and a prime candidate for a fire. If you still have older sheathing on your roof, it's a good idea to replace it with the latest sheathing coated with flame retardant for an extra layer protection.

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How often should roof sheathing be replaced?

Roof plywood should last twenty years, so long as it is not exposed to water.

How do I know if my roof sheathing is bad?

If the roofline is in any way wavy, then it means your sheathing is damaged and needs to be replaced. You can also check for sagging from the inside. Go into your attic with a flashlight, and look up. If any areas of the roof appear closer to you than others, your roof is sagging, and it is time to call a professional.

Can you put plywood over rotted wood?

If you've got rotten subfloor, you will need to replace those pieces before covering with plywood. The new material needs to be the same thickness as the old, so you may need to use shims or have custom milled lumber made for the patches.

What is skip sheathing?

Skip-sheeting, or spaced sheathing, is just as it sounds: sheathing with gaps between. Traditionally, skip-sheathing consists of 1 inch by 4 inch boards nailed to the rafters with gaps between the boards. Spacing between boards is optimal for wood shakes but cannot support asphalt composite shingles.

Is it OK to put a new roof over an old one?

While a repair job can often be more convenient and somewhat more cost-efficient, placing new shingles over old ones is never a good idea. Whether repairing one section of roof, or a replacing a whole one, it's always best to pull up the old shingles before putting down the new ones.

How many times can you reroof a roof?

As mentioned above, homeowners are legally limited to two layer of roof shingles. Therefore, if you already have two layers, you'll need a full tear-off. Additionally, if your roof is severely damaged, it likely won't be able to support the weight of a reroof and will need to be torn off.

How long does a re roof last?

The 26 gauge and 29 gauge cheaper metal roofing options can last for up to 25 years if taken care of. On the high-end, the 24 gauge metal roofing option can last for up to 50 years. However, most manufacturers offer a 20-year warranty and some even a lifetime warranty which is dependent on the metal used.

Do you need roofing felt under shingles?

Answer: Roofing felt is a layer of tar paper installed beneath the shingles to provide a backup waterproof membrane in case of leakage. Felt, otherwise known as underpayment, is required when asphalt shingles are installed as a first layer of roofing or when they are applied over wood shingles or a built-up roof.

Do I need new plywood for my 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 thick is the plywood on a roof?

Most roofs will be sheathed in plywood at least 3/8 inch thick. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.

How do you seal rotted plywood?

Repairing Small Damaged Areas

Repair is accomplished through the use of epoxy penetrants and epoxy filler. Epoxy penetrants are two-part low viscosity epoxies, formulated for maximum penetration. They have a long working time, allowing them to be brushed and rolled into all the crevices of the wood.

Is OSB OK for roof sheathing?

Using OSB For Roof Sheathing

You can use an OSB body for the exterior roof sheathing on your home. The OSB material is different from plywood. But it has become increasingly popular for roofers. It's all thanks to how well the OSB material can stay strong and secure for long-term use.

What is the best sheathing for a roof?

OSB is the better option for roof sheathing. It's water-resistant and costs much less than other options.

Is OSB better than plywood?

Wood fiber is used more efficiently in osb. Osb is stronger than plywood in shear. Shear values, through its thickness, are about 2 times greater than plywood. This is one of the reasons osb is used for webs of wooden I-joists.