Sub Floor Material Calculator

Spike's Calculators

This simple sub floor materials calculator will provide you with the lineal feet of floor joist needed, the number of sheaths to cover the floor and how much glue and how many screws it takes to attach the sheathing to the joist.

The screw count is a bit high at times but this will allow for losing some.

Glue

One tube of glue at 16 O.C. would do just over 3 sheaths.
19.2 O.C. = just over 3.5 sheaths
24" O.C = just over 4.5 sheaths

On a warm day you will be able to stretch that a bit, and on a cold day with cold glue, you will be hard pressed to get that amount of coverage out of your tube of glue.

Screws

16" O.C. = 53 screws a sheath
19.2" O.C. = 46 screws a sheath
24" O.C. = 39 screws a sheath

Floor Opening

If there is an opening in your floor enter the sq footage in the "Floor Opening" field.

It will update all the amounts needed, but it won't take into account any joist that may have to be doubled and or beams that would need to be added because of this opening.

Lengh of Floor ft
Width of Floor ft
Joist Spacing inch
Floor Opening ft²

Results:

# of Joist across Floor: #
Lineal ft of Joist: lineal ft
Lineal ft of Rimboard: lineal ft
# of Flooring sheets: #
# of Tubes of Glue: #
# of Screws: #
Framing - Sub Floor




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