REPORT: MAINTAINING CONCRETE DRIVEWAYS AND SIDEWALKS
driveways are a popular type of driveway in Colorado. If properly
installed and maintained, they will often last 30-40 years or more. To
obtain the maximum serviceable life of your concrete driveway, water
should be prevented from entering the cracks to keep the soil under the
driveway as dry as possible. This will prevent freezing or swelling of
the expansive soils.
control joints, and expansion joints should be sealed to prevent
moisture entry. Self Leveling Concrete Sealants are an excellent caulk
for this purpose. They can be found at Home Depoit and Lowes. Watch YouTube video
To improve the
appearance of cracked patios, the cracks and differential settlement
can be smoothed with a floor leveling or patching cement. The patio can
then be covered with indoor/outdoor carpeting. This will cost
substantially less than replacing the concrete. There are also epoxy
aggregate coatings that can be installed over spalled and cracked
concrete by professionals specializing in this type of concrete
treatment. These coatings are very attractive and typically cost
slightly less than replacing the concrete. These aggregate coatings
should be re-coated with epoxy every 3-5 years.
surface of concrete will spall or erode away. Usually this doesn't
affect the utility of the driveway, only the aesthetics. This condition
is generally caused by either too much water added to the cement when
it was finished or the cement being poured without the recommended 6%
air entraining admixture.
is aggravated by using salt or calcium chloride to melt ice on the
driveway. If you experience ice buildups on your driveway, salt and
calcium chloride should not be used. You could try some kitty litter to
provide traction on those icy areas.
driveways are crowned from the expansive soils. If your driveway
becomes excessively crowned and replacement is indicated, you might
consider replacing it with a flexible asphalt that will accommodate any
potential future movement of the soil. The average replacement cost for
concrete driveways is $4.00 - $6.00 a square foot. Resurfacing concrete
driveways with asphalt is not recommended as the concrete cracks will
usually telegraph through the asphalt topping.
PROFESSIONAL HOME INSPECTIONS, INC. copyright 2013