Deck Size and Protection Calculator

Use this calculator to estimate how many lineal feet of Imus Seal® Butyl Joist Tape your deck will need.

Example Deck 1
16' x 24' deck frame

Depth: 16 ft.
Length: 24 ft.
Joist Span: 16 in.
Deck Size: 384 sq. ft.
Protection Needed: 328 ft.

Example Deck 2
20' x 48' deck frame

Depth: 20 ft.
Length: 48 ft.
Joist Span: 16 in.
Deck Size: 960 sq. ft.
Protection Needed: 788 ft.

Note: Calculation includes deck joists and facia but does not account for girder beams, ledger, or additional blocking.