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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.
How many sheets of plywood do you need for a roof?
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.
Which plywood is used for roofing?
CDX is the grade of plywood most commonly used for roofing (CDX plywood means it is Construction Grade for exterior purposes).
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.
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 thickness of plywood is used for roofing?
Most Common Thickness 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. Roofs with very heavy loads may require 3/4-inch thickness.
How do you calculate roof sheets?
Roof Sheet Calculator Take Roof Sheet Measurements. Calculate Carport or Structure Total m² Area. Enter Width and Length(water flow direction) in meters eg. 5.35m = 5.35. Enter Width of Carport : m. Enter Length of Carport (Water Flow Direction): m. Total m² Area = Calculate Number of Roof Sheets Required.
How much does a plywood sheet cost?
Cabinet Grade Plywood Thickness Type Price 1/4″ Oak Plywood $25.97 1/2″ Oak Plywood $42.97 1/2″ Birch (3 ply) $41.97 3/4″ Birch (5 ply) $44.97.
What is the minimum thickness of roof sheathing?
Sheathing must be a minimum of 19/32-inch thick. Never affix roof sheathing with staples; 8d ring-shank nails need to be used instead. The normal thickness range for sheathing is 3/8 to 3/4 inch.
What is the best plywood for a flat roof?
A flat base is required to lay the roof covering on. This can be either Smartply OSB3 or good quality, structurally sound WBP plywood. A minimum thickness of 18mm must always be used.
Is plywood cheaper than wood?
Plywood goes for about $15-$30 for a 4×8 sheet. This makes it cheaper than natural wood. Thickness, quality and special treatment of the sheet are all factors in the price. High grade plywood, treated for moisture protection can easily fetch north of $60 for a 4×8 sheet.
Can you put new plywood over old?
1 Answer. If the old plywood was clean and not infested with dry rot or mold it should be OK to cover it with the new plywood. One thing to consider is that the new plywood probably wants to be the same thickness as what would be used if it was used by itself on the rafters (i.e. if the old plywood had been removed).
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. The inspection should take place when the old shingles have been removed.
Which is cheaper plywood or OSB?
OSB is less expensive than plywood. To build a typical 2,400-square foot home, OSB may cost $700 less than plywood. OSB is considered by many to be a “green” building material because it can be made from smaller-diameter trees, such as poplars, that are often farmed.
What wood is best for roofing?
Longevity. In terms of cost-savings, cedar wood is long-lasting, making it an ideal roofing material. Cedar lasts at least 10 years longer than common roofing materials, like asphalt shingles.
What grade of plywood is used for roof sheathing?
1/2 or 3/4-inch Plywood for Roof Sheathing? – Traditionally, 1/2-in CDX plywood was common choice with 24-in rafter spacing. However, heavier roof loads may require the use of 3/4-in CDX plywood for roof sheathing. Roofs with less pitch often carry heavier loads, including snow and ice accumulations in the winter.
Can you use pressure treated plywood on a roof?
The most important reason you shouldn’t use pressure treated plywood for roof repair, is that new pressure treated lumber uses copper as its inhibitor.
What should I use for roof sheathing?
Typical types of wood used for roof sheathing are oriented strand board, known as OSB, and plywood, the most popular being OSB. Sheets of 7/16-inch thick, with no edge support, can be used in an area where the snow load is 30 pounds per square foot. With edge support and the same snow load, 3/8-inch OSB can be used.
What is the standard size of a roofing sheet?
Blue MS Metal Roofing Sheet, Dimensions: 8 X 4 Feet, Thickness of Sheet: 2 to 3 mm.
How much is a long span roof?
LONG SPAN ROOF PRICE CHART COLORED LONG SPAN (RIB) ROOF PRICES (PHP) MATERIAL ORIGIN THICKNESS 0.6mm WIDTH 4 feet Standard Local LENGTH PER FOOT 97 Standard Imported 123.
How many roof panels do I need?
Divide the length of your roof by the width of the metal. In our example we will use 24-inch standing seam roofing, so we will divide 360 inches by 24, which equals 15. This is the number of metal panels needed for one side of the roof.
