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COASTAL PAVING & LANDSCAPING

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Hot Top Information & FAQ's

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Do's & Don'ts - Hot Top


DON'T - Place sharp or pointed objects on your driveway. Indentations will result. This will certainly be true for the first year of its life and perhaps longer (such as on a hot summer day when the mercury reaches 80°F or above). Stay off the new driveway 2-3 days after installation and longer if temperatures are hot.

Principal offenders are high heels, bicycle kickstands, ladders, porch chairs, etc.

REASON - The pounds per square inch on the above subjects is so great. This means that while small in area and light in weight, the weight involved is too great for the area concerned being all concentrated in one small spot. Also, asphalt is not a hard, tight material, but a soft, porous one.

DON'T - Drive near or off the edges of your driveway. If you do, you may fracture the asphalt and crack the whole edge.

REASON - Asphalt contains no structural strength of its own; it is merely a wearing surface. The strength lies in the stone or gravel base. Therefore, if great weight is placed unevenly on the unsupported edge, it must crack.

CURE - Your driveway is constructed slightly above grade, so proper drainage will result. Otherwise, water will collect alongside the driveway and eventually undermine it.

This means, of course, that the edge is exposed. To prevent possible damage, it should be backfilled or supported. This is why a road or highway has a shoulder or curbing.

NOTE - When installing new asphalt driveways it is necessary to excavate the site of the driveway slightly larger than the width of the finished driveway. For re-surfaces the grade of the driveway will be raised.  If your lawn meets the edge of your driveway there will be some lawn damage that will need to be repaired.  This means that in most cases it is necessary to install materials such as loam and grass seed along the finished edge of the driveway in order to protect the edges from cracking, as well as covering the edges of the driveway for the best visual appearance. In areas where erosion may be an issue we recommend using crushed stone. Where appearances are not an issue stone base material (gravel) is the best material to use, and offers the most strength.

As driveway edges are not intended to remain exposed, and due to the nature of the material, there will always be minor variations that can cause the edge of the driveway to appear wavy. Material installation will give the edges a straighter appearance. Coastal asphalt will always do its best to utilize any access material available on site along the edges of driveway. Any additional material that may be needed along driveway edges is NOT INCLUDED in your contract unless mentioned specifically. In many cases it is difficult to estimate the amount of loam, gravel or crushed stone needed until the driveway is fully installed. Coastal Paving provides these services and will price upon request.

DON'T - Turn the car wheels sharply on the pavement. Also, don't turn the wheels while standing still- MAKE SURE THE CAR IS IN MOTION. Otherwise, power steering gouges will result. These are bruises or lacerations to the surface, caused by the kneading, grinding action of the tires moving on the bias against the asphalt and will create areas that are "cupped out" on the pavement.

This problem is most often encountered in L -shape driveways, where the garage sits at right angles to the driveway. The consequent backing, cutting, turning etc. creates this condition. Even cars without power steering or lightweight sports or compacts will cause these marks. Greater care should be exercised in hot weather, since the asphalt is softer and more susceptible to marking.

REASON - Asphalt contains certain oils or volatiles to make it more workable or malleable. Until they evaporate, the blacktop will remain soft. This aging or curing process may take as long as a year, depending upon blacktop thickness, weather, etc.

"But my blacktop never did this!" Quite possible. ..older mixes were coarser and therefore more stable. Today's mixes are much finer in response to an increasing public demand for a "smooth" driveway. While pleasing in appearance, the finer mixes have a greater tendency to displacement under strain.

CURE - Time is the only answer. Gradual oxidation will eliminate the problem. Again, MAKE SURE THE CAR IS IN MOTION before the wheels are turned.

NOTE - Sealer applied too soon will only aggravate the condition; since it tends to trap the soil prevents and retards the drying process. After the driveway "sets up" then sealer should be applied. We advise that sealer not be applied in the same year the driveway is installed.

DON'T - Park the car or camper in the same spot all the time. This is particularly true in the case of a digout where the base is fresh. No matter how thick the material, deep the base or heavy the compaction, depressions or "wheel dishes" may result, if care is not exercised.

REASON - To place a ton and a half or two tons in the same spot day in and day out over a long period of time can only produce adverse results.

CURE - Move the car around slightly. Don't give all or most of the wear to one small area. Distribute the usage over the entire driveway.

DON'T - Allow overweight vehicles on the driveway. Your driveway is constructed for automobile traffic only. Heavy trucks (garbage, cement, delivery, fuel, etc.) will break up the pavement, since the base is insufficient to take the weight.

Driveways can be constructed to accommodate these larger loads. Of course the cost is somewhat higher, and in most cases the additional expenditure is unnecessary.

DON'T - Feel that the driveway should be completely puddle-free. I n areas completed by hand or where close drainage tolerances are encountered, this may sometimes occur.

In addition, subtle shiftings of the sub-base may cause some puddling. Any spot holding water 1/4" or less deep is almost impossible to eliminate. Many of these small water spots work themselves out with eventual use.

The oils present in the new asphalt tend to hold the water on the driveway. However, as these oils gradually evaporate, the water should disappear.

Some garages are constructed lower than the driveway elevations. The minimum drainage tolerance is 2 inches every 10 foot length of paving. The driveway may be constructed lower than the road or surrounding elevations. Areas such as these are always difficult to achieve 100% drainage.

DON'T - Allow weeds or other vegetation to crowd the edges of the driveway. If so, you will find these hardy pests burrowing through the stone base and up through the asphalt topping. They will evidence themselves prior to blooming as bumps or minor eruptions in the driveway. Often these air-borne particles are brought in with the stone base or dust binder when it is laid in place. The heat from the blacktop then hastens the germination process.

The strength of some of these species, such as creeping morning glory and dandelions is phenomenal. Instances of their penetrating even concrete are common.

Their appearance in no way should be considered a reflection upon the thickness of the material. Application of weed killer (Triox or Roundup) or simple table salt mixed with water will eliminate the problem most of the time. However at times, multiple applications may be required.

DON'T - Allow a driveway snowplow on your blacktop without a warning to the operator to raise the blade slightly. Otherwise, the plow blade may gouge or scratch the asphalt.


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 FAQ’s

How often should the driveway be sealed?

With "bargain" sealers, yearly application is practically mandatory. Assuming, however, that a highgrade, coal tar base, water-emulsion type sealer has been used, it is not necessary to seal every year. Each driveway, of course, is different, but it is not unreasonable to expect a 3-year lifetime. Some will last even longer.

Why Do You Want Hot-Mix Asphalt Paving?

It's more flexible than concrete and thus less prone to cracking.
Cheaper than concrete.
Less prone to damage by rock salt and ice melt.
Sets faster than concrete because it hardens by cooling rather than drying.

What is Hot-Mix Asphalt Paving Not?

It is not driveway sealant. It is not crack sealant. Both of these are fixes, not solutions.

Why Do You Want Hot-Mix Asphalt Paving?

It's more flexible than concrete and thus less prone to cracking.
Cheaper than concrete.
Less prone to damage by rock salt and ice melt.
Sets faster than concrete because it hardens by cooling rather than drying.

What is Hot-Mix Asphalt Paving Not?

It is not driveway sealant. It is not crack sealant. Both of these are fixes, not solutions.