1ST CHOICE ASPHALT REPAIR COMPANY

Commercial Pavement Construction and Maintenance
(630) 765-5885
 

Asphalt Maintenance Understanding Crack Sealing

Cracks in asphalt are inevitable. Crack will always develop. This is normal aging process due to expansion and contraction of the pavement. Tree roots, water under pavement or broken water pipe can cause cracking. Sometimes it can be from improper compaction, installation or insufficient or poor sub-base. Most of the time it is simply Mother Nature's natural aging, settling or ground movement.

Every owner/manager needs an asphalt preventive maintenance plan that includes crack sealing. Depending on the initial construction and climate conditions, a crack sealing and maintenance plan can help asphalt last 10 to 15 years before major replacement is necessary. The cost associated with such a crack sealing plan is a fraction of the replacement cost

Crack sealing is an annual maintenance procedure. It should be scheduled a minimum of every two years. Cracks should be filled as soon as possible to avoid water infiltration and expansion.

 

 

THREE CRACK SEALING OPTIONS


  1. CRACK SEALING, Rout, Blow and Fill

  2. CRACK SEALING, Blow Fill Rubberized Hot Pour Crack Sealant

  3. CRACK SEALING, Blow & Fill Rubberized Cold Crack Sealant


 

1. CRACK SEALING, Rout, Blow and Fill



Equipment: Cimline Model 230 Magma Melter & Cimline PCR-25 Router, Bander carts and or V-squeegees

Procedure: Rout existing cracks (1/4 inch or wider.) Routing equipment will have the ability to cut a flat vertical face on each side of the crack wall to a width and depth of 1/2 inch. Clean cracks of dirt, loose debris and foreign material with blowers, wire wheels and or compressed air.

 

Fill the cracks with WR Meadows #3405 rubberized Hot pour crack sealant. Filled cracks will be relieved of excess sealant by a banding machine to form a 3 �� band of crack sealant over the existing cracks.

Recommended Applications: New commercial pavements, Parking lots, Roadways, Streets and Alleys.
Asphalt pavement that has never been crack sealed before.

Advantages:

  1. Routing opens smaller cracks to provide a reservoir for the sealant.

  2. It produces clean uniform edge on the crack wall for greater sealant adhesion.

  3. It is the best way to address seam cracks in new pavements less than 6 years old.

  4. Last 5 times longer than blow and go techniques.

Disadvantages:

  1. It is extremely labor intensive and therefore very expensive.

  2. It difficult to follow meandering cracks with a routing machine and some portions of the cracks can be missed.

Not recommended for previous crack sealed pavements, or Residential driveways.
Town homes/ Condominiums personal driveways or older pavement areas where
alligator cracking is present or if cracking exceeds more than 20%.


 

2. CRACK SEALING, Blow and Fill Rubberized Hot Pour Crack Sealant



Equipment: Cimline Model 230 Magma Melter, bander carts and or V-squeegees

Procedure: Mechanically clean all cracks of vegetation, dirt, loose debris and foreign material with wire wheels, blowers and or compressed air.

 

Fill cracks 3/8 inch or wider with WR Meadows #3405 rubberized Hot pour crack sealant. Filled cracks will be relieved of excess sealant with banding machines to form a 3 �� band of crack sealant over the existing cracks.

Recommended Applications: All commercial pavements, Parking lots, Roadways, Streets and alleyways.
Best on previous crack sealed surfaces.

 

Advantages:

  1. It''s fast and therefore cost-efficient.

  2. It can be used to easily follow meandering cracks.

  3. It is best on older asphalt pavement and /or that has been previously crack sealed.

Disadvantages:

  1. It does not get into small cracks to allow for greater sealant penetration.

  2. It can have some adhesion problems.

Not recommended for Residential driveways. Town homes/ Condominiums personal driveways, or older pavement areas where alligator cracking is present or if cracking exceeds more than 20%.


 

3. CRACK SEALING, Blow and Fill Rubberized Cold Applied Crack Sealant



Equipment: Pour pots, V-squeegees

Procedure: Mechanically clean all cracks of vegetation, dirt, loose debris and foreign material with wire wheels, blowers and or compressed air.

 

Fill cracks 1/2 inch or wider with FlexMaster rubberized Cold-Applied crack sealant. Filled cracks will be relieved of excess sealant with V-squeegees that form a band of crack sealant which extents approximately 1 1/2 inches on each side of the filled crack.

Recommended Applications: Residential driveways. Town homes/ Condominiums personal driveways.


Advantages:

  1. It�s faster, safer, requires less equipment and manpower, and therefore cost-efficient.

  2. It can be used to easily follow meandering cracks.

  3. It is best on appearance. Does not stand out as much.

  4. It is the best cost-effective option, if your on an annual maintenance plan.

Disadvantages:

  1. It does not get into small cracks to allow for greater sealant penetration.

  2. It can have some adhesion problems.

  3. Does not last as long as hot applied sealants.

  4. Takes longer to set up. Therefore, it can sink into cracks and not stay flush with pavement.

Not recommended for commercial pavements, Parking lots, Roadways, Streets and Alleyways.


 

CRACK SEALING SUMMARY:

  1. Have a Preventive Crack Maintenance plan.

  2. Knowing that cracks in asphalt will always develop.

  3. Understanding what crack sealing does and does not do.

  4. Understanding equipment, procedures and crack sealing options.

  5. Know that sealing cracks regularly will extend the pavement life significantly by keeping the water out!

  6. Understanding crack sealing will defer the inevitable...The extremely expensive job of totally repaving or replacing.

  7. Knowing why Crack sealing is the most important part of asphalt maintenance.

Crack Sealing Disclaimer

 

Crack sealing does not repair asphalt. It helps prevent further water infiltration. Crack sealing does not make cracks disappear. Crack sealing will make cracks more visible. Only now cracks will be sealed.

 

Crack sealants can and do sometimes fall back into crack before the crack sealant has time to set and bond. The crack will still be sealed only sunken at the surface. Crack sealing is not always going to be flush with pavement.

 

Crack sealing is best for cracks 3/8 of an inch or wider! Cracks less than 1/2 inch wide and spider cracking do not warrant crack sealing. These cracks are too small to accept crack sealant material into the crack and therefore will not bond properly. Our crews are instructed to avoid sealing these types of cracks.

 

Edge cracking (is where asphalt pavement butts up to grass, dirt, or gravel surfaces.) or alligator cracking does not warrant crack sealing. Those areas have already failed and are in need of repair. Our crews are instructed to avoid sealing these types of cracks.

 
Areas where asphalt pavement butts up against concrete slabs, sidewalks, curbs or building are not cracks. These are joints. 1ST Choice Asphalt Repair offers joint sealing service upon request.

 

Crack sealing is a search and destroy mission. Our crew walks the asphalt pavement searching for the cracks to seal. In the process of crack sealing it is possible to miss a crack somewhere.

 

Parking Lot Maintenance, Stripping & Signage, Asphalt Repair, Sealcoating, Crack Sealing, Residential Driveways

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