Finishes · Joint sealant

Size the joint. Count the cartridges.

Turn total joint length, installed width and depth, package volume, allowance, backer rod, and prices into a transparent material order.

← Joint length →Continuous joint run
← Joint width →↕ Sealant depthBacker rod below sealant

1 Measure the joint

2 Enter package and pricing

Results update automatically · verify the manufacturer width-to-depth ratio

Transparent calculation

Joint volume, allowance, cartridges, and backer rod.

The result calculates sealant by installed joint geometry instead of relying on an unexplained linear-foot rule.

Open the verified methodology for formula provenance, assumptions, a worked example, and limitations.