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Roof Shingle Calculator Tips

Roof shingle calculator tips will help you take advantage of these simple scripts to make reasonably accurate estimations of the cost of repairing an old roof or replacing your roof. Be sure to take the time and effort to learn how to use a roof shingle calculator in order to get the highest value from it. You will not need to do a lot of complex calculations, just type some numbers into the boxes and click a button.

But the output of a roof shingle calculator depends upon the quality of the data you put into it. So take the time to measure the roof area carefully and think about the variables that will impact your roofing cost. Roof calculators will factor in things like shingles, felt paper, flashing, nails and ridge caps into their algorithm, and draw from average national and local rates to arrive at your estimate.

Based on the figure you derive from your roofing calculator, you will be able to plan out your repair or replacement budget and order the right amount of material such as bundles of roofing shingles. There are other ways in which a roof shingle calculator will be of value, so be sure to read this article about other tips to getting the most out of one.

Looking for a quick and easy roof shingle calculator to get an estimate? Try this one below (It’s free!)


Roof Shingle Calculator Use To Order Roofing Shingles

A roof shingle calculator can help home owners by serving as a quick and easy ready-reckoner for estimations over roofing shingle quantities needed for constructing a building. Roof shingles are sold in bundles, or based on the number of shingles needed to roof a square (100 square feet).

When delivered by the manufacturer, shingles are wrapped in paper or in plastic. The bundles are organized so that they can be easily carried by workers and lifted up onto roofs, even with higher buildings. For this reason, a bundle of lighter shingles will have more pieces, and can cover a larger area of roof than a comparable bundle of heavy roofing shingles.

This becomes important while ordering roofing shingles for your home. With heavy shingles, you will need to order more bundles to cover similar areas of roof.

As a broad rule of thumb, it takes 3 bundles of shingles to roof a square. 3 tab roofing shingles which are the most popularly used types follow this rule closely. But because they are purely functional and rather ugly looking, modern homes do not feature plain and simple 3 tab shingles but instead sport more attractive architectural shingles.

When you use a roof shingle calculator to estimate shingle counts, keep in mind that heavier shingles will require more bundles in order to cover the same area. It may take 4 to 5 bundles of heavier shingles to roof one square. For more information about roof shingle calculator use in estimating shingle count read this special report – click here


Roof Shingle Calculator Errors

Read the rest of this article on roof shingle calculator here.

2. Overhang

The basic area is not good enough for the calculation of overall roof coverage area. You will also need to add on an extra measure for the overhang of the roof that goes beyond the edge of the house. If you do not include this figure in your reckoning, you will be short on materials when you go to do the roof. It is best to include this roof replacement cost in the beginning rather than pay more for it later.

3. Pitch

The basic square footage and overhang are measurements of the roof if it were level. Assuming you are not replacing a flat roof, you will need to consider the slope or pitch of the roof in your calculations for roof replacement cost.

Pitch is described as the number of feet the roof rises for every 12 feet of distance. For example, a low pitch might be 3:12, a medium pitch might be 6:12, and a steep pitch might be higher than 9:12. These categories are important in determining the number of shingles needed.

By Shawn Michael Hickman

Article Source: http://EzineArticles.com/?expert=Shawn_Michael_Hickman



Roof Shingle Calculator – An Estimate Of Shingles Needed For A Job

Roof shingle calculator is a sort of a ready reckoner to help estimate the roofing shingle needs for a home. The shingles needed for a roofing job are sold in either bundles or squares. A square as you might know is a roofing term used to denote hundred square feet of roof. Shingles are sold wrapped in plastic or paper and the bundles weigh light enough so a person can lift them comfortably and transport it up to the roof. So, if you compare a light-weight shingle bundle and a heavier roof shingle bundle you will find the light-weight shingles will cover more area than the heavier ones. So, you will have to buy more of the heavier shingles bundles to cover the same area.

As a general packaging rule, 3 bundles of roofing shingles cover one roofing square. This rule applies to the low-cost 3-tab strip shingles. But, today most homes no longer use these shingles as they are not as long-lasting or aesthetically attractive. So, when using roof shingle calculator remember that the heavier shingles need more bundles to cover the same area. 4-5 bundles of heavier or laminated shingles will cover the area of one square.

From the above discussion you will have an idea that you need to know the roofing area to be able to accurately place an order for the roofing shingles. If you input the area into the roof shingle calculator you will be able to arrive at the number of bundles to buy. When buying roofing shingles you also have to keep in mind the fact that roofing needs a lot of overlap not only on the plain surfaces but at the ridges, valleys, around chimneys, at the edges and as starter shingles. All these have to be factored into our ordering quantity.

There are a mainly two methods used to find the area of a roof. One is the direct measurement method where the roof is physically measured and in the other is the sheet count which is a much simpler and easier method of finding the roofing area even if it is less accurate than the measurement method. In finding the roofing area we are not bothered about getting very accurate answers. If it is as close to the actual area as possible than that is quite sufficient.

Once you get the roof area and key it into the roof shingle calculator remember that you have to also order extra bundles to cover for any shingles that are damaged or torn during their laying, the extra shingles for the starters, the shingles for overlapping, the shingles for ridges and valleys. You will an extra 4-5 bundles of shingles depending on how much of a careful roofer you are.

In the sheet count method we count the number of plywood sheets covering the whole roof. Add up the sheet areas and we get the roofing area. If you have any half sheet, quarter sheets on the roof just add them up to get full sheets. Now, enter the details in your roof shingle calculator and get the number of bundles to order and prices.


Roof Shingle Calculator – Estimating The Requirement Of Shingles

A roof shingle calculator will be of invaluable help to homeowners to make a correct estimate about the number of roofing shingles needed for a job or a re-roofing project. Give yourself lot of time to assess and making the required math to know the number and quantity of shingles, the felt paper, under-layment, flashing, nails, vents, turbines, ridge caps and other materials needed to complete a roofing project.

When you do a thorough job and make your calculations as accurate as possible you will be able to order all the materials before starting the roofing project. You don’t have to wait around for materials after you start laying the shingles. A roof shingle calculator gives you an accurate amount of shingles to order. Based on this figure you can order all other related items. When you prepare well in advance you job will move along smoothly and with out interruption. You also can finish it on time which gives more satisfaction than anything else.

A roof shingle calculator needs some preliminary data that is used to arrive at the number of shingles to order. Here we will explore two methods of calculating roofing shingles quantity to order. You also have to factor in extra roof shingles for wastage, overlapping and starter shingles.

There are certain roofing terms that you need to know when using the roof shingle calculator.

Square- This is a roofing term that refers to an area equal to 100 square feet in real terms. So, if you are buying a square of roofing shingles it means that it will cover 100 square feet of roof area.

Bundle – Shingles are wrapped in paper or plastic and sold in bundles. These bundles are light enough to be carried by any person. So, when buying heavier shingles you will need to order more bundles than when buying light-weight shingles. Usually the standard asphalt 3-tab shingles cover 3 square per bundle. There are about 29 shingles in bundle of size 12 inches by 36 inches. Heavier laminated and architectural shingles need 4-5 bundles to cover the same area.

So, now you know the basic terms used in roof shingle calculator. Next, most important step is to go measure your roof. You need to the area of your roof to order roof shingles. To measure the roof you can either measure it or use the sheet count method.


Get up on the roof measure each plane of the roof, get its length and width and calculate the area by multiplying the lenght and width of each of plane and adding them all up to arrive at the square footage of the roof to be used in the roof shingle calculator. If you have steep slopes then measuring the area is a little more complex. First measure the length of the building at the ground level and make provisions for any roof overhangs. Now, walk up a ladder and using a stiff measuring tape, measure the length of the slope from the eaves to the edge of the ridge.

Sheet Count Method:

In the other using the sheet count method to use in the roof shingle calculator, you just count the number of sheets needed to cover the whole area. It’s fast method and can be done from the ground. This can be only done with the sheathing is exposed and panels are of 4 feet by 8 feet are used as structural panels. Count the full panels and make a estimate about the ripped and crosscut sheets at the edges and make it up to a full sheet. If sheets are diagonally cut then assign them a size of say or half or quarter depending on the cut. As each sheet measures 32 feet area you can arrive at the square footage by adding up all the sheets you have counted.

How Much To Order?

If the roof shingles you are ordering are of the kind that cover 3 bundles to a square then it is easy to order one bundle for every sheet of roof sheathing you counted. If you are buying the heavier or lighter kind of bundles then just divdide the number of sheets of sheathing by 3. This gives you the total number of squares of sheet needed to cover the roof. The calculations are fairly simple and you can work it out yourself that three sheets of sheathing cover roughtly 100 square feet or one square in roofing terms.

All these measurements may seem very simplistic but you don’t have to be really that exact considering that there will be wastage of shingles and at the edges and corners you have to allow for good margin, you have to calculate for the overlapping and so on. If your roof shingles calculator allows for healthy margin for extra shingles then that might be quite enough. Else, you need to order more.

Take Into Account Wastage

Remember that you will need to order more than the just square foot area of the roof. Starter courses along the eaves and at rakes, extra shingles for ridges, hips and valleys all need more shingles than the area they cover. Also, in order to stagger the joints you have to cut the shingles by half a tab length for every row, this again will generate its own waste, against the walls and around chimneys and other vents, shingles will need to be cut to fit correctly. Some wastage is inevitable due to breakage, wrong cutting, improper nailing or tearing. So, add about 3 bundles of extra shingles to the value arrived at by your roof shingles calculator. If you are inexperienced you may need more than that.