Use Roadware MatchCrete™ Clear, quartz sand, and portland cement to repair cracks in exterior concrete sidewalks and decks with a broom finish. MatchCrete™ Clear is a non-yellowing polyurethane bland that sets fast, bonds very well and can accommodate exterior conditions.
Last week I posed two new videos on the Roadware YouTube Channel showing Roadware MatchCrete™ Clear in action repairing cracks in an exposed aggregate concrete sidewalk and patio. I also posed a video on how to repair a hairline crack in a driveway or sidewalk.How to repair a crack in an exposed aggregate concrete patio using Roadware MatchCrete™ Clear in a 600ml cartridge.
How to repair an exposed aggregate concrete sidewalk using Roadware MatchCrete™ Clear in the 50 ml cartridge.
How to repair a hairline crack in a driveway, sidewalk, patio, or pool deck with Roadware MatchCrete™ Clear.
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| Exposed Aggregate Repairs with MatchCrete™ Clear |
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| Driveway Repairs with MatchCrete™ Clear |
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| Hairline Crack Repair with MatchCrete™ Clear |
Roadware Flexible Cement II™ is semi-ridged polyurethane for creating flexible bonds between concrete surfaces and other materials. This versatile material may also be used to protect contraction joints from traffic deterioration.
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| The passenger tram at this airport gilds on pillows of air. Flexible Cement II is used to prevent the expansion joints from damaging the air pillows. |
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| One of the 12 air pillows that support each car. Flexible Cement II™ prevents metal expansion joints from lifting up and cutting the air pillow as the car passes. |
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| Flexible Cement II™ is used to protect the interface between the metal expansion joint and the concrete. This allows for a smooth surface for the air lift cars to glide over.
Use Flexible Cement II™ to repair sawn contraction joints and cracks
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| Roadware Flexible Cement II™ 91050 10-Gallon Kit 91020 2-Gallon Kit (not shown) |
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| Roadware Flexible Cement II™ 91105 50-ml Kit |
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| Roadware Flexible Cement II™ 91300 600-ml Kit |
One of the most common calls we get is asking how to repair a crack in a driveway or patio. We designed Roadware MatchCrete™ Clear with this in mind. Roadware MatchCrete™ Clear is a UV stable clear polyurethane hybrid that makes effective repairs to most exterior concrete surfaces. By simply leaving the repair clear, the color of the surrounding concrete shows throughout the repair.
The first step to a good looking crack repair is to rout-out or cut the repair open with a diamond blade grinder. You only have to go about 1/4″ x 1/4″. This will create a recess for the material to rest as it soaks down further into the crack. Skipping this step will allow the material to flow uncontrollably on the surface and will create a messy looking repair.
Apply cartridge mixed MatchCrete™ Clear directly to the crack. Small amounts of silica or quartz sand can be added to keep the material from flowing out the bottom of the slab. If necessary, matching colored sand can be used to match colored concrete areas. Fill the crack to slightly below grade to prevent material from flowing on to the surface of the concrete.
After a year of service, the repair above still looks good. Please note, MatchCrete™ Clear is not a soft expansion joint material and should not be used in joints that are designed to move. Always give careful consideration as to why the concrete cracked in the first place and what the concrete is expected to do in the future before making repairs of this nature.
UPDATE:
September, 2013
We have a new video for driveway hairline crack repair:
