You may not hear about us on the radio or see billboards with our name on it which is because for the last 40 years we have been building a reputation and that reputation keeps us busy.  Most of our business is repeat customers and word of mouth referrals.   We love the opportunity to show you how quality asphalt can make your life easier.  A nice asphalt surface can help shoveling in the winter, not getting stuck in the mud, limiting the dust, driving in or around potholes, water drainage, and more. Contact DRS to meet with an estimator and enjoy the benefits of quality Wisconsin Asphalt Paving.

ASPHALT THICKNESS:

The necessary thickness of asphalt can vary from 1.5″ to over 6″. This all depends on a number of factors which include:

  • volume of traffic

  • weight of traffic

  • type of base under area to be paved

  • desired life span

RESIDENTIAL DRIVEWAYS:

  • typically only require one layer of asphalt measuring 2.5″ in thickness

  • it is important to consider ALL types of traffic that may be using your driveway, many people forget about the possible garbage, LP, Sewer,UPS and various other trucks that need occasional access.

COMMERCIAL PARKING LOTS:

  • typically range from 3″ to 5″ in thickness

  • These should be applied in two lifts, with each lift maintaining between 1.5″ and 2.5″ in thickness. *

This is important for two reasons:

  1. If the lift is too thin it will cause stones to be cracked and broken during the compaction process
  2. If the lift is too thick it will not allow for proper compaction and will leave unwanted air voids in the finished product.

* there are instances where the specified thickness will not fall into this range but special attention should be paid to mix design and equipment necessary to complete the job properly.

OVERLAYS:

This is a terrific option on larger parking lots where function is the main goal and cost is an issue. In most cases this option can add 10+ years to the life of a parking lot for a fraction of the cost of full replacement. The downside of this application is that “reflective cracking” will occur, meaning that if there was a crack in the surface underneath it will typically show in the new surface within a few years. The biggest limitation of this option is often drainage, so it is important to have an experienced professional examine the site to determine if an overlay will be a viable option.

  • typically range from 1.5″ to 2″

  • often require a small amount of “skim patching” in order to level out any uneven surfaces prior to application of the overlay

  • often require the removal of some of the old asphalt to allow a new layer to be added and still maintain an even transition at garage floors, sidewalks, aprons, etc…

DRS specifically recommends our Patented Rubberized Asphalt for your overlay option. The rubberized asphalt is basically a conventional asphalt mix with both ground up rubber from car tires and small polyester fibers added to the mix. This allows for greater adhesion to the layer below, increased flexibility, and added stability by binding the mix together.

GOING GREEN…Not so fast!!!

When it comes to “Going Green” in the paving industry there are a few different things to consider.  In the instance of DRS’s Patented Rubberized Asphalt it is a no brainer…we take rubber  tires that would be headed for the landfill and add them back to improve the mix by increasing the adhesion and flexibility of the asphalt.  When it comes to using recycled asphalt as base material it makes sense as well.  This not only saves new material from being used, but will have added strength due to the small amount of glue already on the stone.
Now here is where it gets tricky…lets talk about adding that old recycled asphalt and old asphalt shingles to your new asphalt mix.  One of the best properties of new asphalt is that it can be a hard surface but still maintain a small amount of flexibility.  This allows it to support heavy loads without deforming, but flex and move without cracking.  That flexibility is due to initial properties of the Asphaltic Cement (AC) used in the asphalt mix.  The problem is that over time those qualities change, and the AC that was initially soft and flexible is now hard and brittle. Now imagine truck after truck of old asphalt being dumped in a pile, then crushed, and piled up again.  It would be virtually impossible, not to mention extremely expensive, to test and verify the quality of the AC in every load that came into the plant and was about to be used in the asphalt mix. So, best case scenario, samples are taken and a baseline is established…From there the manufacturer must decide what ingredients are necessary to bring the AC back to its desired flexibility.  Keep in mind that all of the options will involve them spending money.

Originally, one of the ways to correct, or at least improve on this problem, was to add asphalt shingles to the mix as well. Asphalt shingles are produced with a softer AC so when they are added to the mix it produced a more flexible product.  Although this can still be a problem because those shingles could also be 30+ years old and may have lost most of their flexibility as well. Not to mention that the amount of man power and equipment necessary to properly process dirty shingles can be very expensive in itself.

The bottom line is that if recycled materials are used there are a lot of factors that have to be taken into account and corrected.  If done correctly their is a small margin of profit to be gained while still producing a quality asphalt mix.  If done incorrectly there is a very large margin of profit but it comes at the expense of your asphalt, and defeats the purpose of “Going Green” in the first place.  After all, what good it reusing a product if it means you will have to redo it twice as often?