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How Does Asphalt Roofing Metrical Cost Affect the Cost of Shingles?

Aug 6

How Does Asphalt Roofing Metrical Cost Impact the Price of Shingles?

There are a variety of aspects of asphalt roofing. In this article, we will look at the most important aspects that affect how well a shingle will stick to the roof. We will also go over important terms such as melting viscosity and penetrating value. You can also learn how these metrics affect the cost of shingles.

Asphalt Roofing Metrical

Penetration value

When determining the durability of roofing made of asphalt it is important to consider the penetration numbers. These are the numbers that measure the resistance of asphalt against abrasion and other forces. Generally, these values are based on the strength of asphalt which ranges between 40 and 80 percent. The higher the asphalt's hardness increases the penetration while reducing it will lower the point of softening. To calculate the penetration amount, you should examine the softening point and the penetration ratio of the various types of asphalt.

There are two primary methods for calculating the penetration values of asphalt. The first method uses an aluminum cup that is filled with asphalt , and then the cup is heated at a steady rate. The second one uses a small flame for flashing the sample. The flash point is the temperature at which instantaneous flash takes place. In the end, you can find out the maximum penetration rate of an asphalt roof by using this method. This method is very popular among engineers and architects since it helps them decide the best material for the particular building.


When selecting an asphalt shingle you need to understand the range of melting viscosities that are available. The material's ability to stretch and harden is called the melt-viscosity. The ideal range of 130 to 420 cps at 400 deg F or 204deg C. The initial melt viscosity may be any appropriate range, ranging from 425 to 500 cps at 400deg F.

NIST (National Institute of Standards and Technology) has conducted studies regarding the viscosity of asphalt. This is the property that determines how asphalt flows and sticks to strengthen the feel. According to the NIST, roofers should use between 1 and 2 kg of asphalt per square meter. Proper application techniques can ensure that the recommended interply asphalt is applied to the roofing substrate. In the case of roofing, the ideal viscosity of asphalt is 0.125 Pa.s. A 75cP (0.75 P.s.) is appropriate for spreader applications using mechanical equipment.

Rheology is a method to create an even more precise specification for asphalt-based materials. ASTM D36, D5 and D5 can be utilized to assess the properties of asphalt. They test the melt-viscosity level of asphalt materials between 25deg C and 400 degrees F. The Brookfield viscometers Model LV and RV, can determine the viscosity of asphalt-based materials. It is important to fully comprehend the flow curve to decide on a grade. Rheological data can be used to determine processing parameters.

Granules' weight

Asphalt shingles are mainly made of asphalt, and are complemented by granules to shield against UV Rays. These granules are made from natural stone. They are then crushed and screened in order to achieve different gradations. They are included in particular proportions in the blend mix in the process of manufacturing. The quantity and size of the granules determine the gradation of asphalt shingles.

The roofing's thickness will increase as asphalt roofing granules are heavier. Materials that have overlap have more weight per square foot. A granule can weigh from 30 to 40 percent less than a shingle that is brand new. But a shingle of an ageing appearance is only half that of a new one.

Cost of shingles

If you're buying new asphalt roofing shingles for your roof You may be wondering what cost it will be in the metric scale. The answer depends on the location of your home and the size of your project, and whether you need professional assistance. Asphalt shingles are one of the most affordable types of shingles available, but they also have the lowest price per square foot. Check out the prices of different kinds of asphalt shingles to figure out the cost estimate.

In metric, the price of asphalt shingles are measured in kilograms. One pound is equal to one kilogram. They are sold in increments of ten kilograms. Additionally, there are many shades of asphalt shingle. The difference between metric units and imperial units is minimal, making them a great option for shipping internationally. If you are planning to transport these units to Europe in metric units, but be aware that these units may not be available in all countries.


Asphalt shingles made in metric are extremely affordable and a great option for international shipping. Be aware that not all countries follow the system of metric. It is possible to convert prices for purchases in Europe. Thank you for taking the time to read! We hope this article was helpful.

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