Once all the new insulation and rafters are secured, the entire roof is covered with new plywood. In some cases I recommend 3/8-inch plywood, though 1/4-inch will usually suffice.
Can I use 3/8 plywood for 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. Loads will vary with the pitch of the roof; the flatter the roof, the greater the load on any one section.
What material is used for RV roofs?
Rubber TPO – Probably the most common material for an RV roof, and actually comes in two different types: an EPDM RV roof (Ethylene Propylene Diene Monomer), or a TPO RV roof (Thermal Poly Olefin).
How long does roof plywood last?
There are a few averages you can expect, but they are dependent on these factors. Plywood siding, such as T-111 should give at least a 35 year life expectancy, if finished properly; but there are many cases of it lasting over 50 years. Roof sheathing should last 30 to 40 years or to put it another way, two roofs.
Is 7/16 OSB OK for roofing?
Standard types of wood designed for roof sheathing are oriented strand board, known as OSB, and plywood, the most popular being OSB. Sheets of 7/16-inch thick, without edge support, can be used in an area where the snow load is 30 pounds per square foot.
What is better for roofing OSB or plywood?
Plywood Holds the Moisture Advantage Over OSB
When plywood gets wet, it tends to swell. … OSB takes longer than plywood to get saturated, but also takes much longer to dry out. When used as roof sheathing, this tendency to hold moisture means it will degrade faster than plywood when exposed to chronic leaks.
What type of plywood is used for RV roofs?
In some cases I recommend 3/8-inch plywood, though 1/4-inch will usually suffice. Extra care is taken to make sure the seams between the panels are very tight. There should be no screws or staples sticking up above the level of the plywood.
Does Flex Seal work on RV roofs?
So now we know that Flex Seal is good for RV roofs, but it’s not always the best option. There are other products that you may want to keep on hand specifically for roof repair, but Flex Seal products are great for many purposes! They’re tough and versatile, so it never hurts to keep some on hand.
How do I know if my RV roof is EPDM or TPO?
If possible remove a staple so you can look at both sides of the roofing material. If one side is a white or a dove color and the other side is black it is EPDM. If the roofing material is all one color, top and bottom, it is TPO.
How much does it cost to recoat an RV roof?
Professional RV shops and dealerships do provide a number of maintenance services, including resealing and reroofing. However, most places will charge well over $3,000 for the job, with larger RVs requiring an estimated $5,500 to $2,000 for a full reseal.
What can I use to seal my camper roof?
The 7 Best Roof Sealants for Your RV
- EternaBond Tape Micro Sealant. …
- Geocel ProFlexRV Flexible Sealant. …
- Dicor Rubber Roof Acrylic Coating. …
- Pro Guard Liquid Roof. …
- Liquid Rubber RV Roof Coating. …
- Dicor Self-Leveling Lap Sealant. …
- Heng’s Rubber Roof Coating. …
- Rust-Oleum LeakSeal Rubber Coating.
How much does a 4×8 sheet of roofing plywood cost?
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 plywood over plywood on 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.
Do I need to replace the plywood on 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. … When considering a contractor for your project, be sure to address the subject of plywood replacement, and what the cost per plank will be.