Sealing Cracks In Concrete Roof

Fill the crack with urethane caulk similar to what you would use for driveway caulk.

Sealing cracks in concrete roof.

Types of concrete crack fillers concrete crack sealant. This is similar to regular caulk and is usually applied using a caulk gun. Use foam backer rod into the gap with your fingers. The concrete needs to be dry.

Pour your chosen vapor barrier into a paint sprayer after the primer is dry and liberally spray an even coat onto the concrete roof. The crack or expansion joint must be cleaned of all debris. Clean the concrete by removing loose dirt or debris with a broom. Apply a small bead into the crack by pushing it.

Don t forget to replace roofing felt. 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. It s latex based and. The material goes on either with.

Work systematically from one end to the other spraying in lines. Mix the epoxy sealant according to the manufacturer s directions. Step 4 slowly draw the gun along the joint forcing a bead of concrete repair caulk deep into the crack. Some low volume epoxy sealants are supplied.

Follow up with a second coat after 24 hours have passed. On heavy rain there was no problem but with a light. The fun in this problem was this. Mix the epoxy paste according to package directions.

Fill and smooth the joint. Once the primer is dry apply an elastomeric sealant to the cracks corners and damaged areas and then to the entire roof. Overlap the previous line every time you start a new one. The crack was located on a tilted roof a complicated position that require special security.

Crack repair in concrete roof step 1. For large cracks over 1 2 inch deep a backer rod should be placed in the crack before applying the sealant. 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. Concrete crack sealants are specifically made to fill up and repair thin cracks up to half an.

Lower than the surface of. Set the rod 1 4 in. Allow the vapor barrier to dry before you add a second coat. Typical concrete crack preparation for sealant with an epoxy product cleaning a concrete crack for patching and sealing.

Soak up any standing water from the area.