Sealant cracking because joint moves/stressed

Sealant cracking usually means the joint is moving, stressed, dirty, or unsupported. Fix the cause before resealing.

Stop if

• This sealant is cracking because the joint looks stressed. Do you want the support/fit fixed before resealing?

Watch out

• Do not keep adding sealant to a joint that is still moving.

Check

• Check whether the joint is pulling apart or unsupported.
• Look for hanger/elevation stress.
• Tighten or repair the mechanical connection if approved.
• Clean out loose failed sealant.
• Reseal only after the joint is stable.

Steps

• Check whether the joint is pulling apart or unsupported.
• Look for hanger/elevation stress.
• Tighten or repair the mechanical connection if approved.
• Clean out loose failed sealant.
• Reseal only after the joint is stable.

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