asphalt repair & maintenance: do it yourself vs hiring a contractor
TRANSCRIPT
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Do -It-YourselfvsHiring a Contractor
Asphalt Repair & Maintenance:
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2. Causes of Asphalt qqDamageOverview3. Asphalt Repair & qqMaintenance Tasks
4. Summary
1. Typical Pavement qqStructure
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Liquid Asphalt/Binder
Image Credit: HAPI
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Aggregate/Crushed Rock
Image Credit: State Testing
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Asphalt Plant
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Image Credit: HAPI
Asphalt Pavement aka
Asphalt Concrete
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Image Credit: HAPI
Pavement Structure
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Image Credit: HAPI
Pavement Structure
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common causes of asphalt damagehere in Hawaii.5
There are
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UV Rays1.
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UV rays break down the binder that holds the rock, sand, & aggregates together.
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Oxidation2.
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OxidationThe interaction between oxygen molecules and all the different substances they may contact.
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OxidationIn general, oxygen molecules cause asphalt molecules to bond tighter, creating a stiffer, more brittle pavement.
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OXIDIZED ASPHALT IS GRAY
NEW ASPHALT IS BLACK
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Water3.
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Image Credit: yaybiscuits123
If water is allowed to penetrate into your base
through cracks, your asphalt becomes more prone to cracks and potholes.
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Underground drainage issues can also cause damage to your
base course.
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Traffic Load4.
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Heavy vehicles like garbage trucks put enough stress on your asphalt to cause cracks.
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Poor compaction can also cause loading issues.
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Oil Stains5.
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Oil stains eat away and softens your asphalt until the pavement cannot carry traffic load.
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What to do?
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Here’s 6 asphalt repair & maintenance options
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and we’ll compare DIY options to hiring a pro.
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Sealcoating1.
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A sealcoat acts as a barrier to protect asphalt from
oxidation, UV rays, oils, water penetration, & salts.
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Before sealing your asphalt, the surface must be prepped.
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Debris must be removed from the surface.
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Vegetation must also be removed from the asphalt.
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Large areas that need prep can be a pain unless you have special equipment.
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Applying the sealcoat yourself is manageable for small areas.
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But imagine applying a
sealcoat to a large area.
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Specialized equipment can make the job easier.
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Crack Fill2.
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Filling cracks in your asphalt will prevent water penetration.
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There are two types of crack fill:
COLD & HOT.
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Image Credit: Home Depot
Cold crack fill is relatively easy to apply and requires minimal equipment.
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Image Credit: Home Depot
DIY is a possibility
depending on lineal feet.
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Hot crack fill is more pliable than cold crack fill and will penetrate the crack better.
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It also sets quicker– allowing vehicles to drive
over sooner.
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However, hot crack fill must be heated to
300°F-400°F before being applied.
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Hiring a contractor may be more convenient for larger scopes of work.
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Pothole Repair3.
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Repairing a pothole will prevent additional water from penetrating your asphalt.
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Pothole patches will “plug” the hole.
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But higher quality patches will also prevent water
penetration into the asphalt.
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Pothole patches are DIY and provide temporary relief.
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However, a pothole is a result of a base course failure.
Patches do not address the base course.
Image Credit: HAPI
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A permanent solution would require hiring a contractor.
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The contractor would melt/soften
the asphalt.
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Then dig out the asphalt.
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And replace with new asphalt.
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And finally recompact.
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Remove Oil Stains
4.
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DIY oil stain removers “suck” up the oil from
the asphalt.
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Apply, give time to dry, then scrub off.
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However, drying time can vary from
5 to 8 hours.
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And the longer oil stains go untreated, the more difficult they are to remove.
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Hiring a contractor can expedite the process.
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Using the same method as permanently repairing a pothole.
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5.Traffic Load
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DIY- Move dumpsters near your parking lot entrance to prevent garbage trucks from entering your parking lot.
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Or you can hire a contractor to install a concrete pad near your
dumpster to carry the load of garbage trucks.
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6.Striping & Marking
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Using paint brushes and rollers might be easy enough if you
were touching up old lines.
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Stencils are also useful for
DIYers.
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But if you’re starting from scratch, that’s when hiring a contractor may be helpful.
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Striping straight lines with a brush or roller can be difficult…
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Striping straight lines with a brush or roller can be difficult…
…and may not look as professional.
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Applying straight lines using a striping machine is easier than using a brush.
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Also, you need to make sure you are following ADA parking lot guidelines.
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For example, you need the appropriate amount of Accessible Parking Spaces.
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And you need the correct signage.
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In large scopes of work, hiring a contractor would be beneficial.
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In summary:
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DIY Hiring a Contractor
Sealcoating - Small driveways - Large projects
Crack Fill - Cold Crack Fill - Hot Crack Fill
Pothole Repair - Various Patches - Repair Base Course
Oil Stain Removal - Various Stain Removers - Repair Surface
Traffic Load - Move Garbage Containers - Install Concrete Pad
Striping & Marking - Touching up old lines - Restripe
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Any questions?
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Mahalo!