EIFS – sealant cracking/degradation at movement control joint

Cause

UV exposure

Repair

  • fully remove all sealant from the joint, insert backing rod or bond breaker tape and apply and tool off new sealant suitable for the in-use environment
  • obtain advice on correct sealant for the material and joint size
  • use a paintable sealant if the wall is to be painted
  • where it is suspected that the building may be leaking and there is a risk of consequential damage, an experience building surveyor should be engaged to report on the building

Cause

Sealant not suitable for being painted

Repair

  • fully remove all sealant from the joint, insert backing rod or bond breaker tape and apply and tool off new sealant suitable for the in-use environment
  • obtain advice on correct sealant for the material and joint size
  • use a paintable sealant if the wall is to be painted
  • where it is suspected that the building may be leaking and there is a risk of consequential damage, an experience building surveyor should be engaged to report on the building

Cause

Too much movement for the grade of sealant

Repair

  • fully remove all sealant from the joint, insert backing rod or bond breaker tape and apply and tool off new sealant suitable for the in-use environment
  • obtain advice on correct sealant for the material and joint size
  • use a paintable sealant if the wall is to be painted
  • where it is suspected that the building may be leaking and there is a risk of consequential damage, an experience building surveyor should be engaged to report on the building

Cause

Sealant not installed over a backing rod or bond breaker tape

Repair

  • fully remove all sealant from the joint, insert backing rod or bond breaker tape and apply and tool off new sealant suitable for the in-use environment
  • obtain advice on correct sealant for the material and joint size
  • use a paintable sealant if the wall is to be painted
  • where it is suspected that the building may be leaking and there is a risk of consequential damage, an experience building surveyor should be engaged to report on the building

Cause

Sealant at the end of its serviceable life

Repair

  • fully remove all sealant from the joint, insert backing rod or bond breaker tape and apply and tool off new sealant suitable for the in-use environment
  • obtain advice on correct sealant for the material and joint size
  • use a paintable sealant if the wall is to be painted
  • where it is suspected that the building may be leaking and there is a risk of consequential damage, an experience building surveyor should be engaged to report on the building