Sealing Cracks In Concrete Roof

Typical concrete crack preparation for sealant with an epoxy product cleaning a concrete crack for patching and sealing.

Sealing cracks in concrete roof.

The fun in this problem was this. To concrete cracks inch wide or narrower apply an epoxy or latex patching product view example on amazon mixed according to the manufacturer s specifications. Overlap the previous line every time you start a new one. Caulking concrete cracks install backer rod.

How to seal cracks leaks in concrete roofs. Mix the epoxy paste according to package directions. On heavy rain there was no problem but with a light. Clean the concrete by removing loose dirt or debris with a broom.

The crack was located on a tilted roof a complicated position that require special security. Set the rod 1 4 in. Apply a small bead into the crack by pushing it. The crack or expansion joint must be cleaned of all debris.

Step 4 slowly draw the gun along the joint forcing a bead of concrete repair caulk deep into the crack. Pour your chosen vapor barrier into a paint sprayer after the primer is dry and liberally spray an even coat onto the concrete roof. Concrete crack sealants are specifically made to fill up and repair thin cracks up to half an. The material goes on either with.

Fill the crack with urethane caulk similar to what you would use for driveway caulk. Fill in large cracks with mortar or roofing cement then apply a good concrete primer. For large cracks over 1 2 inch deep a backer rod should be placed in the crack before applying the sealant. Mix the epoxy sealant according to the manufacturer s directions.

Once the primer is dry apply an elastomeric sealant to the cracks corners and damaged areas and then to the entire roof. Lower than the surface of. Crack repair in concrete roof step 1. It s latex based and.

Use foam backer rod into the gap with your fingers. Follow up with a second coat after 24 hours have passed. This is similar to regular caulk and is usually applied using a caulk gun. Work systematically from one end to the other spraying in lines.

Don t forget to replace roofing felt. Allow the vapor barrier to dry before you add a second coat. Some low volume epoxy sealants are supplied. Cut the tip of the nozzle on an angle with a utility knife to match the width of the crack and load into a standard caulk gun.

Fill and smooth the joint.