Free tool · 07 92 00 / 32 13 73
Joint sealant calculator
How much sealant and backer rod will your joints take, and how urgent is the work? Enter your joints, check what you see, and get a planning estimate. You can send it to our team on WhatsApp.
Joint section · not to scale beyond 1″Parking lot / truck court
- Sealant
- 3.6 gal
- 20 oz sausages
- 23
- 10.1 oz tubes
- 46
- Backer rod
- 550 ft
Plan resealingThe sealant is wearing out. Plan joint work this season, before the next freeze-thaw and heavy-rain cycle.
Includes a 10% waste allowance. Depth uses the half-of-width rule of thumb (1/4″ minimum, 1/2″ maximum). The rod is sized about 25% wider than the joint. The sealant manufacturer's data sheet sets the final numbers. WhatsApp opens with your results, and nothing is sent until you press Send.
Questions
Frequently asked questions
- How accurate is the joint sealant calculator?
- It's a planning estimate based on joint length, width and a typical depth. Actual quantities depend on the product, joint condition and backer rod depth. The manufacturer's data sheet and a site measurement set the final numbers.
- Why is the sealant depth about half the joint width?
- That's a common rule of thumb for movement joints. A sealant shallower than it is wide stretches more easily without tearing. Each manufacturer publishes its own limits, and those govern.
- What happens when I send my results on WhatsApp?
- WhatsApp opens with your numbers and the condition check written out. Nothing is sent until you press Send, and then our team replies with next steps.