Replacing a roof is a big project and knowing how much it will cost can help you plan better. If you're thinking about getting a free roof estimate, you're already on the right path. An accurate estimate gives you a clear idea of what to expect, from material costs to labour and extra fees.

Let’s break down everything you need to know—step by step—so you can budget smartly for your new roof.

1. Measure Your Roof Correctly

The first step in estimating the cost is figuring out the size of your roof. This is called the roof area. To get this number, measure the length and width of each section of your roof. Then multiply them.

Roof Area = Length × Width

For example, if your roof is 40 feet long and 25 feet wide, the total area is:

40 x 25 = 1,000 square feet

Always measure carefully. If your roof has slopes, valleys, or complex shapes, be sure to include those in your total area. Many roofing professionals add about 10-15% extra to account for waste from cuts and overlaps.

2. Understand the Cost of Materials

The type of material you choose will greatly affect your budget. Here are some common options:

3-tab shingles – Affordable, basic, lasts 15-20 years
Architectural shingles – Stronger, lasts 20-30 years
Metal roofs – Durable, energy-efficient, lasts up to 50 years
Designer shingles – Most attractive and long-lasting, but also the most expensive

To find the material cost, multiply your total roof area by the cost per square foot of the material you’ve chosen.

Material Cost = Roof Area × Cost per Square Foot

If you choose architectural shingles that cost $4 per square foot and your roof is 1,000 square feet:

$4 x 1,000 = $4,000

3. Add the Labor Charges

Labor makes up a big part of the final bill. Skilled workers are needed to remove the old roof, prepare the surface, and install the new one properly. Labor costs depend on your location, the slope of your roof, and the complexity of the project.

Labor Cost = Roof Area × Labor Rate

If labour is $2.50 per square foot and your roof area is 1,000 square feet:

$2.50 x 1,000 = $2,500

Steeper roofs or those with many angles may take longer and cost more.

4. Don’t Forget Additional Costs

There are a few other charges that might show up on your roof replacement estimate:

Permit fees from your local government
Disposal costs for old roofing materials
Equipment rentals for steep or high roofs
Protective gear and scaffolding for worker safety

These extra costs can range from a few hundred to a few thousand dollars, depending on your project’s size and location. In our example, if these costs total $500, your final total would be:

$4,000 (materials) + $2,500 (labour) + $500 (extras) = $7,000

5. Get a Roof Repair or Installation Estimate When Needed

Sometimes, you don’t need a full replacement. A roof repair estimate will usually be lower, but it depends on the damage. If only a small area needs fixing, the cost will be based on the affected square footage and the materials needed.

On the other hand, a roof installation estimate applies to new homes or new roof structures. The process is like replacements, but labour and material needs may differ slightly.

6. Why Work with Local Roofing Contractors

Getting an estimate from local roofing contractors offers several benefits:

They understand your area’s weather and building codes
They can visit your home quickly and provide fast service
Their reputation in the community means they care about doing quality work

Always ask for multiple estimates and compare not just prices, but also materials, warranties, and timelines.

Plan Smart with the Best Roof Cost Estimate

Getting a free roof repair or roof replacement estimate helps you avoid surprises and budget wisely. Whether it’s a simple repair or a full replacement, having a detailed plan puts you in control. Look for clear breakdowns of material, labour, and other costs.

If you're ready to take the next step, consider contacting Get Roofing Estimates. They connect homeowners with trusted local professionals who provide fast, accurate quotes for any roofing job.

Free Roof Estimate: Know the Real Cost Before You Start