▽ +09.00Engineering Hub · Calculator

Joint sealant calculator

Work out the sealant volume and the number of cartridges or sausages from the joint section and length, with the backer rod length.

Inputs

The values shown are an illustrative example, not product data; replace them with your project values and the approved TDS.

Joint width

The width at the time of sealing.

Sealant depth

The depth above the backer rod, from the width-to-depth ratio in the TDS.

Joint length

The total length of joints.

Cartridge size

e.g. 310 ml cartridges or 600 ml sausages.

Waste (optional)

An allowance for cuts, overlaps, details and site losses.

Cartridges55 units

Results

Result of the example values

Volume per metre: 200 ml/m
Net volume: 30.00 L
Volume with waste: 33.00 L
Cartridges: 55 units
Length per cartridge: 3.00 m
Backer rod length: 150.0 m

Estimate only — final quantities depend on the approved specification, the product TDS and a site survey. No prices are given.

Send with a quotation request

+01.00Formulas

How it is calculated

Volume per metre (ml) = width (mm) × depth (mm)
Volume (L) = volume per metre × length (m) ÷ 1000 × (1 + waste %)
Cartridges = round up [ volume (ml) ÷ cartridge size (ml) ]

QQuestions

Questions clients ask

How many sealant cartridges do I need for my joints?

Sealant volume = joint width × sealant depth × length (1 mm × 1 mm × 1 m = 1 ml), divided by the cartridge or sausage volume, plus waste. The width-to-depth ratio and the backer rod follow the product data sheet.