FAQ

We want you to feel as comfortable about our process and work as possible. If you have a question that isn’t addressed below, please contact us to let us know.

Thomann Asphalt — Altogether thorough.

General FAQ

What sort of maintenance is required to prolong the life of my parking lot?

We recommend annual preventative maintenance, such as crack sealing when new cracks occur. Sealer should also be applied to your lot at least every two years. If you are interested in learning more, contact Thomann Asphalt. We can develop a customized plan that involves routine inspections and ongoing preventative maintenance.

Asphalt Paving FAQ

What is the difference between asphalt paving and asphalt paving sealer?

Paving is really the process of installing asphalt (blacktop) on some sort of surface. Usually the asphalt surface can be measured in inches and the number of courses. It is preferably laid on compacted stone or an old asphalt surface; however, there are applications that allow it to be laid on other types of surfaces such as dirt, clean stone, or concrete.

Asphalt pavement sealer is a surface coating that is applied over the asphalt surface to beautify and protect existing asphalt. It is associated with the process of “pavement sealing” which is usually applied every few years along with pavement marking and line striping.  Pavement Sealing – through asphalt pavement sealer – will significantly increase the life of a parking lot by reducing the effects of oxidation and water on the surface of the parking lot.

Contrary to you might believe, asphalt sealer will not reverse any effects of aging that have already occurred. Any cracking in the asphalt surface due to age or insufficient base must be corrected with a structural repair. Crack Sealing can help the situation to some degree, but should only be seen as a minor corrective measure that will only have limited success.

What is stamped asphalt and is it as good as paver blocks?

Stamped asphalt was developed as an inexpensive alternative to the labor intensive installation of paver blocks. There are a few notable differences.

First, since paver blocks are made of concrete, they are generally colored through the entire block. Stamped asphalt is normally colored by adding a colored surface coating after paving and stamping. In terms of long term wear, concrete paver blocks will hold their color much longer. Stamped asphalt however can be coated again and again.

Second, stamped asphalt is generally not as thick as concrete paver blocks, which helps it in terms of cost in a normal residential type application. Stamped asphalt however can be as thick as necessary in order to adapt to the application, which makes it useful in many commercial installations.

What is blacktop paving?

The word “blacktop” is interchangeable with the word asphalt. Thus asphalt paving and blacktop paving are one in the same.

How long should I wait before driving on a newly paved surface?

For a newly paved roadway, asphalt can be driven on as soon as the rolling is completed. However, for parking areas we recommend waiting 12 – 24 hours for the asphalt to cool completely.

Can you pave over concrete?

Yes, it is possible to pave over concrete; however, reflective cracking may occur as a result.

What are the major contributors to pavement deterioration?

The deterioration of your pavement surface may occur due to several reasons. The main cause is inadequate thickness of your pavement surface. Other factors include lack of maintenance, oil and gasoline spots from automobiles, or a weak and unstable subbase.

Why should I choose asphalt paving over other methods?

Asphalt is a petroleum-based product used for driveways, roads, cart/walking paths and any project that requires a smooth surface for foot traffic or motorized vehicles. Asphalt is flexible and gives during the harsh weather conditions experienced in our area. It is easily and inexpensively maintained and is aesthetically pleasing.

What determines the price of asphalt at any given point in time?

The price of asphalt is determined by the cost of crude oil at any given point in time.

Patching & Repair FAQ

When is the best time to perform patchwork?

 

The best time to perform asphalt patchwork is during the spring and summer months to allow the asphalt to cure over the winter and be ready for asphalt sealer the following year.

What causes potholes to form?

Possible causes of potholes include asphalt that was too thin, base failure under heavy loads or poor drainage that weakens the subgrade and base. Poor quality (segregation in the asphalt, poor compaction, or asphalt that was burnt or did not have enough oil mixed into it) may be a contributing factor.

What are the different kinds of patch repairs?

There are two main types of asphalt patch repairs procedures that will provide a suitable fix to most asphalt related issues – full-depth patching (peel and pave) and surface patching.

Full-depth patching involves the removal of the entire layer of pavement surface down to or including the subbase, depending on the condition of the stone base. New subbase is then installed, a tack coat is applied, and new asphalt pavement is backfilled into the patch area.

Surface patching is a more temporary fix and should only be considered for a surface that is in relatively good condition. This process does not involve the excavation of the existing surface or subbase. The asphalt is simply layered over the existing surface and feathered to match the in-place grade. In some cases, a rebate is milled into the surface, which eliminates the need to feather-edge the patch.

Parking Lot Maintenance and Asphalt Crack Repair FAQ

What are the benefits to parking lot repair through asphalt seal coating?

There are many benefits to applying a seal coat to your asphalt surface.

  • First and foremost, this type of parking lot maintenance is a cost effective option that will increase the life span of your property.
  • Also, pavement sealing will prevent water penetration to your subgrade and slow the effects of oxidation. It also makes your parking lot more flexible and resistant to gas and oil spills.
  • Lastly, it will beautify your property by giving the effect of a brand new parking lot.

Why should I fill in the cracks that have developed in my parking lot with asphalt crack filler?

Asphalt crack sealing should be implemented for cracks in your parking lot that are at least a quarter inch thick. Cracks should be filled in with crack filler as soon as possible to prevent the further growth of that crack and also to prevent water from seeping under your asphalt surface into the subgrade.

What is the difference between asphalt sealer and pavement resurfacing?

The seal coating process is a preventative parking lot maintenance process that is sprayed onto your lot in a liquid form after applying asphalt crack filler. Resurfacing is the actual process of applying a whole new layer of asphalt pavement over your old surface for a more complete parking lot repair.

Does the asphalt sealer fill in the pavement cracks?

No, sealer will not fill in a pavement crack completely. The recommended method to asphalt crack repair is to apply a hot, rubberized asphalt crack filler product into the crack itself. This is the only way to solve your problem as it will slow the formation of new cracks. Some lots, due to a lack of parking lot maintenance, have deteriorated beyond the point of asphalt crack repair as a beneficial alternative. In these cases, your parking lot will need patch work and/or resurfacing.

How long should I wait before driving on a newly sealed surface?

The recommended wait time to allow traffic back onto your lot after asphalt crack sealing and pavement sealing is 24 hours. This allows enough time for the asphalt sealer product cure and will help prevent tracking and will also reduce power steering marks from appearing after the parking lot repair.

Should a newly paved lot be seal coated right away?

No, it is recommended that a newly paved parking lot be left to cure for at least one year before the first asphalt seal coat is applied.

When is the best time for a parking lot to be sealed?

The best time is during the months of May through September when the temperature is at least 50 degrees Fahrenheit.

Concrete Repair and Services FAQ

What sort of concrete services do you provide?

 

We specialize in curbs, curb repair, and flatwork. If we can’t do it with our own forces, we know the concrete repair contractors who can and we will be with them every step of the way to assure you their work will meet our high standards.

Is there a difference between cement and concrete?

Yes, there is a difference. Cement, or portland cement, is a finely ground powder made from limestone and other raw materials. The materials are blended together and fired in a kiln at extreme temperatures. The resulting stone sized pieces, called clinker, are then ground into a fine powder called “portland cement.” Portland cement is the active ingredient in concrete.

Concrete is the product used in buildings, bridges, road paving, sidewalks, patios, etc. Concrete is a mixture of portland cement, water, aggregate (sand and stone), and miscellaneous chemical admixtures. Concrete is mixed at a concrete plant facility and delivered to customers in revolving drum truck mixers, also referred to as concrete trucks or mixer trucks. Concrete is sometimes generically referred to as ready-mix because it is ready to use or already mixed upon arrival at the project location and ready to be put to use for whatever concrete services are necessary.

Can concrete be placed in extremely hot or cold weather?

Concrete services can be performed at various temperatures if precautionary measures are taken. In extremely cold weather, concrete should not be allowed to freeze until it has gained sufficient strength to withstand the damaging effects of freezing. Concrete will lose its workability and set up considerably faster in hot weather.

What causes concrete to crack?

There are different types of concrete cracks. The most common of these is related to the natural shrinkage of concrete as it cures and dries. Shrinkage concrete cracking can be controlled or hidden by following proper jointing techniques. Different factors and conditions can contribute to each type of concrete cracks. It is important to understand these potential causes and take appropriate action to prevent cracking and the subsequent need concrete crack filler or concrete crack repair.

Why does some concrete develop surface deterioration?

Concrete surface deterioration is usually referred to as scaling. Scaling is a local flaking or peeling of the finished, hardened concrete surface, resulting primarily from multiple freeze-thaw cycles. The condition can be aggravated by the presence of de-icing materials such as salt. Any product that is intended to melt ice and snow can contribute to concrete scaling. Even products labeled Safe for Concrete can contribute to scaling. The probability that scaling may occur can be reduced or eliminated by using a durable concrete mix and following recommended concrete placing, finishing and curing/sealing practices performed by an experienced concrete contractor.

What causes discoloration of concrete?

There are different types and causes of concrete discoloration. Dark, shadowy areas may appear if the fresh concrete was placed over alternating wet and dry areas of the subgrade. Darker areas are typically located where the subgrade was too wet or actually muddy. Temporarily covering concrete with poly sheeting or construction blankets can also cause the hardened concrete to be darker in appearance. Another possible cause of dark, mottled areas is the uneven application of curing/sealing products. Curing/sealing products should be applied as uniformly as possible with a nozzle that will produce a fine spray or mist. There can also be differences in coloration between concrete slabs placed on different days. This is usually due to slight variations in temperature and weather conditions from day to day.

How soon can new concrete be put into use?

During periods of moderate to warm weather, new concrete could be opened for pedestrian traffic in 12 to 24 hours, or when the surface becomes scuff resistant. A general guideline is that new concrete should not be opened for vehicular traffic for a minimum of seven days. This seven-day period can be significantly reduced by using a faster setting, stronger concrete mix. Please note that concrete gains strength more slowly in colder weather so more time may be needed before putting your new concrete into use.

Asphalt Milling, Grinding and Pulverization FAQ

What is cold milling?

Cold milling is the automatically controlled removal of pavement to a desired depth with specially designed equipment, and restoration of the surface to a specified grade or slope, free of humps, ruts, and other imperfections. The resulting textured pavement can be used immediately as a driving surface, or it can be overlaid with a minimum of material.

What is grinding?

Grinding is just another term for cold milling. Generally the term is use with rebating. Rebating is grinding along edges where concrete curb or sidewalk meets an asphalt edge. Grinding or rebating is done to ensure there is no lip between surfaces, which can be a trip hazard or unsightly.

What is pulverization?

Pulverization is a process of grinding (or milling) the existing asphalt surface and mixing it with the underlying stone base. This process serves to strengthen the existing base and form a better foundation to build on.

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