The Cost of a New Roof: Calculating the Height and Pitch

The cost of a new roof.

In our previous post, we shared with you some information about the real cost of a new roof. We also helped to identify how gutters and flashing replacement affects your final budget.

In this article, we’ll show you how to calculate the height and pitch of your ceiling to determine the real cost of a new roof.

The Measurements Needed to Know the Cost of a New Roof

Measuring without climbing

Want to measure your roof? You probably think you need to hop on top of it, but it’s not necessary. It may not be as accurate as physically measuring your roof, but the results can accurately figure for an estimate.

How to do it?

  • Measure the area of your house’s footprint. Remember including eaves and other overhangs.
  • If necessary, hang a plumb-bob from the outer edge of the overhang. Then, mark where it touches the ground.
  • Measure to the exterior wall of the house. That way you’ll calculate the length of the protrusion.
  • Now use this measurement to determine its square as above by dividing the total by 100 and round up.


Finding the roof pitch

Now determine the pitch of your roof, which is the measurement of the roof angle’s steepness over a 12-inch run.

  • Measure a 12 inches distance up from the lower edge of your roof.
  • Calculate the number of inches from the suspended end of the roof’s level. Use a level for this task.
  • The result is the pitch of your roof. It is often expressed as “X in 12,” where X represents the distance to the surface.
  • Once you calculate the pitch of the roof, find out how that number impacts your other calculations. The chart below states the multiplier you’ll need:


Pitch Multiply By
2 in 12 1.102
3 in 12 1.134
4 in 12 1.159
5 in 12 1.191
6 in 12 1.230
7 in 12 1.274
8 in 12 1.322
9 in 12 1.375
10 in 12 1.432
11 in 12 1.493
12 in 12 1.554


  • Take the ground level square that you determined from dividing your square feet by 100.
  • Finally, multiply it by the multiplier from the chart above. That way you’ll calculate the total square of your roof.

Still uncomfortable with ladders and heights? You can get the same measurements from inside your attic space by using the beams and trusses as your guides.

However, consider that in low-pitched roofs, it might get uncomfortable. Great, you are one step closer to getting the measurements that will help estimate the cost of a new roof.


Calculating the roof’s height

The roof’s height is essential for both repairs and replacements. For example, extremely tall roofs generate a more dangerous workspace, as well as loose materials that can slide off more easily. Contractors who give estimates over the phone don’t guarantee that estimate until they inspect the actual roof. So, if possible, measure your roof’s height and provide your contractor with more specific information. How to do the math?

  • Calculate the height from the base to the peak of the roof.
  • Now, multiply the roof’s width, as well as the overhangs, by the pitch expressed in a fraction. For instance, 7 in 12 would be 7/12.
  • For a more straightforward calculation, convert the pitch to a decimal. Use your computer if necessary to make sure it’s accurate.

Feeling brainy? Use the top number of the fraction and divide it by the bottom number. Look at the following example:

In the case above, 7 in 12 became 7/12. Seven divided by 12 is 0.58333333333 which rounded is 0.58. If your roof’s width is 100 feet, 100 x 0.58 is 58. So, The height of the roof from base to peak is 58 feet.

Of course, a professional contractor will always want to measure the roof on site. However, by providing this information to your roofer, you can give a better idea of how much work will be involved to take care of your roof.


Removing old shingles

No matter if you’re a professional roofer or a DIYer, removing the old shingles is the hardest part of the job. The cost of a tear-off varies depending on the area. If you decide to do it as a DIY project, you’ll save about $1,000. However, for effort and safety, it’s always a smart idea to hire a pro.

The following are 8 things to remember when removing old shingles:

  1. Remove shingles safely. Remember to protect the surrounding landscaping as well as doors and windows from falling debris.
  2. Pry shingles up in two- to three-foot-wide sections as you work your way down to the roof. Once you get to the roof jack, return to the top and start over the next part.
  3. When walking over your roof, be wary of hazardous soft spots. If you know the location of the roof supports, stick to those paths, but exercise caution regardless.
  4. Make a plan for shingle debris. Shingles get heavy as they pile up, so, start the work on the farthest side of the debris container.
  5. Avoid damaging the flashing. When working near flashing, slow down and take a look at the flashing. If there’s no need to replace it, don’t damage it.
  6. Inspect your roof for underlying damage and nails. Remove them and clean the surface of all the small debris left behind.
  7. Protect roof sheathing and flashing with a water and ice barrier. Be sure to cover all the flashing areas and to avoid creating wrinkles in the barrier. Cover the rest of the roof with a 30-pound asphalt-saturated felt.
  8. Clean up your gutters of loose granules and nails. Try running a broom magnet over your yard as well.


Replacing your roof with a different roof type

There are no significant concerns when replacing your roof with another of the same kind. However, if you want to replace a lighter roof, such as asphalt shingles, with something heavier, like slate or clay tiles, you better make sure that your framing can support it. Before using a heavier material, ask a pro to inspect and strengthen your frame and trusses if necessary. That way you make sure they can support the weight of the new material. Obviously going for a different type will affect the cost of a new roof; keep this in mind.


Replacing a roof is an outstanding job that can lead to all kinds of unexpected complications. Perhaps there’s more damaged timber under your shingles and underlayment than you thought there was. Maybe you find that you have your roof stripped and there’s no sign of your new shingles being delivered any time soon. These unforeseen problems are enough reasons for many homeowners to hire professional roofers. Given that people always expect a roof to last from 25 years to the life of the building, calling your trusted roofing agency will be well worth it.

Want to know the real cost of a new roof? At Bay 101 we help you determine it. Request a FREE ROOF INSPECTION before it’s too late! Our certified team of roofing experts is willing to help you. Contact us!


Image credit: Pixabay


The Real Cost of a New Roof: Gutter and Flashing Replacement

Cost of a new roof

In our last blog post, we shared some information about the real cost of a new roof. We also help you learn to identify if it’s necessary to pay for a total roof replacement or a partial roof repair.

Several other elements influence the cost of a new roof. Today we’ll discover how flashing and gutters, as well as fascia and soffits, can modify the final budget of that residential repair you must not longer postpone.Continue reading

Is it Time to Call your Roofer? Check out These Roofing Tips First

Roofing tips

There are several home renovation projects that we, as homeowners, are excited to do, such as updating the kitchen or redesigning our garden. However, some home repairs generate more headaches than excitement. One of those not so encouraging tasks are the roof repairs. No matter how much we try to ignore or postpone a roofing issue, it must be repaired immediately before it becomes a bigger problem. The good news? You can delay when the first flaws begin to appear on your roof, by keeping it up to date and giving it proper care. For that, Bay 101 has created some roofing tips that are easy to follow.

Roofing Tips Before You Call Your Roofer!

Take care of your roof

The roof is one of the home’s areas that deserves some extra attention. Neglecting it could lead to high energy bills or extensive damage. In the end, doing the repairs will be costly.

To keep your roof in good standing for decades, here are four roofing tips you should know:


1. When to go pro:

Did you start paying expensive energy bills? Then, there must be something wrong on your roof. The best you can do is a visual roof inspection several times a year. Call your roofer if you see:


  • Curled or buckled shingles.
  • Moss or mold on the roof.
  • Roof areas with missing granules.
  • Rusted flashings.
  • Streaking stains on the shingles.
  • Water stains in the attic.


2. It’s all about maintenance:

Clean the dust and cobwebs from your ventilation system at least once a year. Remember to caulk with a high-grade sealant around vents and pipes as well as paint any exposed metal to prevent rust. Don’t forget to remove all the leaves and other debris from the gutters, so they don’t overflow. At Bay 101, we tell you how to do proper roofing maintenance.


3. One choice can make the difference:

Choosing high-quality materials could make your roof last forever (almost). Asphalt shingle roofs, for example, tend to last approximately twenty years. However, some low budget materials could also continue for decades if the installation is done correctly.


4. People do notice:

Did you know that your roofing material enhances your home’s curb appeal? Roof replacements are some of the home improvement projects that buyers value the most when looking for the dream home.


The roof is one of the most critical parts of your house. Not because you are not aware of its presence means that you should ignore its care and maintenance. Your roof protects your home, don’t forget to give back the favor.

We hope these roofing tips have helped you or will help you in the future.

Don’t know if it’s time to replace your roof? At Bay 101 we help you determine it. Request a FREE ROOF INSPECTION before it’s too late! Our certified team of roofing experts is willing to help you. Contact us!


Image credits: Pixabay

Top 7 roofing tips to deal with those annoying leaks

Top 7 roofing tips to deal with those annoying leaks - Bay 101 Roofing

Leaks are the most common homeowner’s nightmare. Those little holes that cause big problems can become a real headache. Ignoring them is not an option. That’s why the Bay 101 team wants to share these 10 roofing tips so you can face the unwanted leaks and win the battle. Learn about roof leak locations and how to fix them safely.  Are you ready?

The Roofing Tips You Need to Say Goodbye to those Leaks

1. Safety’s first

There is no quick-fix when talking about leaking. Inspecting your roof while it’s covered with ice and snow, or even worse when it’s raining is not a safe way to find that disturbing leak.  Not mentioning that trying to fix the leak temporarily could put you in the hospital. Take a deep breath, be patient and wait for Mother Nature to give you the green light. There’s no need to rush.

Working on a roof involves putting the body in uncomfortable or nonsafe positions. So, prevent slipping by wearing rubber sole shoes. For extra safety, you can use a harness and share the work with a friend or neighbor.

2. Spray the Roof

Take your garden hose and spray in different roof locations to find the leak. Try not to do this on wintertime. It’s not safe to run water on the roof when it’s freezing out.

3. Take a look at the gutters

Do you know what the best place for leaks to appear is? Gutters. Clogged-uncleaned gutters cause the water to build up during rainy seasons.

4. Avoid Dry Rot

Lack of ventilation is the main reason for dry rot. To prevent dry rot to appear it is necessary to install ridge and soffit vents. That way, fresh air comes in and pushes the hot air out through the top of your roof. Problem solved!

5. Prevent Ice Buildup

Ice loves building up under your roof structure. That’s a fact! Shingles and gutters seem to be the perfect place for ice to accumulate. Later, it starts melting and creates an interior drip. Getting rain and ice shields as well as having proper ventilation will help prevent this common roofing problem.

6. Inspect Materials

Faulty shingles are propense to crack quickly once they’re nailed down. Besides, the way shingles are installed play also a big part in leaks. Before installing any element on your roof, check first the merchandise. Remember that you get what you pay for. Pay for high quality.

7. Check Valleys

A ridge or valley is the intersection where two roofs meet. Valleys are also common places for leaks to appear because they receive all the water from the roof.


Did you find your first leak? Do not get discouraged!

Getting rid of leaks is simple if you detect the problem from the beginning. Start by following the roofing tips we just gave you. Have more questions, do not hesitate to call us.

Take care of your roof before it’s late.  Ask for a FREE ROOF INSPECTION and let our Bay 101 Roofing Team do the work for you. Contact us!


Image Credits: Unsplash

Roofing Tips from Professional Roofing Contractors

Roofing tips from professional roofing contractors - Bay 101 Roofing

The moment you feared so much has come. Your roofing contractor is right there in front of you. And, while he’s talking about replacing your roof, two questions are running through your head… “How long it will take? and… How much it will cost?. So, you freeze. But, don’t stress out! At Bay 101, we give you some roofing tips to feel more secure while talking with your roofing contractor.

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