26 feet
Easy way to figure it: If the roll is 3 feet by 100 feet, it would cover 300 square feet. But you have to overlap it about 6 inches at top and bottom, so once you subtract that, it would cover about 200 square feet., When figuring a job, add some for overlap at valleys, chimneys, etc. . . Hope this helps. A standard roll of 30# felt covers 216 square feet; one-half the area of a roll of 15# felt, which covers 432 square feet. Rows are overlapped 2 inches, not 6 inches.
15 lb. has 400 sq. ft. 30 lb. has 200 sq. ft.
The roll has 12.5 square feet of material.
15 lb. 400 sq. ft. 30 lb. 200 sq. ft.
26 feet
50.00/ROLL
Easy way to figure it: If the roll is 3 feet by 100 feet, it would cover 300 square feet. But you have to overlap it about 6 inches at top and bottom, so once you subtract that, it would cover about 200 square feet., When figuring a job, add some for overlap at valleys, chimneys, etc. . . Hope this helps. A standard roll of 30# felt covers 216 square feet; one-half the area of a roll of 15# felt, which covers 432 square feet. Rows are overlapped 2 inches, not 6 inches.
500
1 square = 100 square feet x 8 squares = 800 square feet. 15# felt comes in different sizes. Multiply the length of the roll x the width of the roll to find out how many square feet are in a roll. 800 divided by the square feet per roll = how many rolls you need.
15# typically covers 4 SQ 30# typically covers 2 SQ
There are approximately 86.11 square feet in a roll of felt that is 8 meters x 1 meter. To calculate this, you would first convert the dimensions to feet (8 meters = 26.25 feet and 1 meter = 3.28 feet) and then multiply them (26.25 feet x 3.28 feet = 86.11 square feet).
Roofing paper, or felt, normally comes in about 150ft rolls and are 3ft wide. Figure about 450 square feet of felt. Remember when estimating required amounts that you need to overlap the felt about 6 inches or so. With an overlap of 6 inches, 1 roll has a coverage of about 375 square feet.
The total roll weighs 525 pounds. This is calculated by dividing the total length of the paper by the amount of paper in each pound: 3150 feet / 6 feet per pound = 525 pounds.
One roll of felt is good for 4 squares. so you need 4 rolls.
15 lb. has 400 sq. ft. 30 lb. has 200 sq. ft.
Five--a roll will cover 400 square feet of area.