Q: I have a concrete patio in my back yard and have noticed that a pretty large crack has appeared over the last few years in the winter. I am hoping this is something I can attempt to repair myself. The crack is about two feet in length and ½” deep and ¼” wide. Can you recommend a product and method I can use to repair this?
A: First wash the area with a heavy duty cleaning formula and rinse well. The crack can be filled with a Foam Backer Rod available in 1/8, 1/4 – 3″ diameters. Cut to fit and set down into crack 1/8″ from the concrete surface.
Apply Weldbond or concrete adhesive over the foam backing rod. Allow to cure for 1-2 hours. Then apply Polyurethane caulking (gray or concrete color) into the crack crevice.
Sprinkle dry sand over caulking and brush excess off using a paint brush. Allow to cure for 12 hours before using area.
Sealing Patio Stones
Q: This summer we are having our back yard redone. We are having a company install patio stones in a fairly large area. We would like to seal the new patio stones ourselves when it is completed. What product and process do you recommend we use?
A: Before sealing, you must acid wash (muriatic acid) the surface to etch the cement to enhance penetration of the sealer. Add 1/3 acid to 2/3 water, not the other way around and always wear safety glasses & gloves for this process. Use an emulsified based concrete sealer for the initial application; 2 – 3 years down the road, an acrylic coating may be used.
Note: To apply sealers, it is best to use a low-pressure garden sprayer apparatus, or puddle on the surface and spread with a 10mm roller. Do not do this process on a bright, hot sunny day.
For more home-improvement information, contact Shell Busey’s HouseSmart Home Services. Go to www.AskShell.com.