Dennis & Sons Roofing

Roofing, Siding, & Windows in Bucks and Montgomery County

Roof Estimation

A roof is one of a home’s most important features because it protects building materials and interior contents, affects property values, and impacts curb appeal. But, it is essential that roofing remains sound. When a roof has reached the end of life or is too damaged to repair, Dennis & Sons Roofing can efficiently install a replacement that meets any homeowner’s needs. We have been serving Bucks County and Montgomery County residents since 1909 and are committed to 100% customer satisfaction.

Technicians provide custom estimates, so no two roofing projects cost the same. Many factors determine each project’s pricing, including the type of materials chosen, roof size, the number of stories, and the labor involved. Estimates are entirely transparent, and roofers are happy to discuss details of assessments with clients and explain the pricing.

Re-roofing or Repairs?

Experienced technicians inspect roofs carefully to determine whether they need to be replaced. Common indicators include:

  • Bald spots with missing granules
  • Shingles with curled edges or cupped tabs
  • A roof that is 20 or more years old
  • Cracked shingles
  • Dark streaks caused by airborne algae
  • Roofing that looks old and unsightly

When a replacement roof is recommended but is not in a homeowner’s budget, technicians can sometimes make repairs to extend roofing life until customers can afford a new roof.

If repairs are not possible, contractors can offer various re-roofing options. They highlight choices that are the best values, which may not be the least expensive. A new roof is a significant, long-term investment, so it is essential to consider total costs, including the price of ownership. Choosing high-quality materials means roofs last longer, offer maximum protection, and cost less to own.

A Roof’s Condition Impacts an Estimate

The condition of an existing roof influences the cost of a replacement. When installers are merely adding new materials to a sound structure, there are relatively few added charges. However, if they need to make repairs, the final price can increase. 

For example, when a roof has one or more holes, technicians need to repair the underlying structure before installing new materials. There may be extensive water damage that has to be fixed. Repairs mean extra time, materials, and labor. Minor repairs may not add much to an estimate, but significant damage can get pricey.

Material Choices Affect Roofing Costs

The type of roofing materials used for a project plays a part in costs. In some cases, HOA rules or a home’s geographic location may limit customer choices, so they might not have much flexibility with material costs.

Also, not every material can be used on every home. For instance, a roof with a low slope or a flat roof could require a different surface from a steep pitch. Dennis and Sons technicians will suggest the best choice for each client.

Roofing shingles vary widely in cost, and the least expensive are not always the best financial investment. Other factors determine the overall value. Materials’ longevity, energy efficiency, durability, and sustainability are also important.

Following are some of the most common roofing materials, ranked from least to most expensive:


Affordable asphalt shingles are found on homes everywhere in North America. They are sold in a range of colors and are energy efficient. Asphalt is a popular choice but may not be suitable for every climate and can warp or crack.

Fiberglass Shingles

Lightweight, fire-resistant, and UV-resistant, fiberglass shingles are a more economical option than many other roofing materials. Shingles are durable and typically include extended warranties.

Tile Shingles

Stylish and adaptable, tile shingles are often found on Mediterranean and Spanish style homes. Although more costly than some other options, they can last 80 years and add an interesting architectural element to homes.

Wooden Shakes and Shingles

Priced midway between asphalt and tile, wooden shingles can last as long as 50 years. They are eco-friendly, durable, and energy-efficient. I

Installation may be more complicated than with other roofing. Wood is less fire-resistant than other choices and redwood, and cedar shingles are susceptible to termites and mold growth.

Metal Roofing

Metal roofs are attractive, sold in various colors and styles, and commonly last 30-50 years. Components are made with copper, steel, aluminum, tin, or zinc alloy. Metal roofing is more expensive than asphalt or wood but is also more durable.

Metal roofs are low-maintenance, impact-resistant, and very energy-efficient. Roofs also act as a natural insulator.


One of the oldest roofing materials, slate is also one of the most expensive. A slate roof can last 75-150 years, making it the most durable option. Roofing stands up to the harshest weather and is fireproof. Since roofs can last over 100 years, slate is also considered a sustainable material.

Other Factors That Influence Roof Costs

When professionals estimate the costs for installing a new roof, they look at a wide range of factors that can impact expenses. Technicians evaluate the current roof condition and decide whether the supporting structure needs repairs. Stripping off old materials adds to overall costs.

Home design also makes a difference. Simple roofs without chimneys, dormers, or vent pipes are less expensive than more complex styles. Homes with elements like intersecting rooflines, chimneys, skylights, and turrets cost much more. 

Other factors that impact roofing costs include:


A roof’s size plays a big part in replacement costs. Bigger spaces need more materials, including underlayment, OSB/plywood, and shingles.

Square Footage

The square footage of a roof is not the same as a home’s square footage. The home’s square footage is typically listed during an appraisal and represents the sum of gross living areas. The figure includes all levels but usually not basements, garages, and interior walls.

To determine a roof’s square footage, experts measure covered living areas as well as walkways, lanais, overhangs, garages, and front entryways. To get a rough idea of how large a roof is in square feet, they multiply the length in feet by the width in feet of all flat planes and add them all together.


A general rule is that the steeper a home roof, the more expensive the project, primarily because of safety issues. Home roofs might have low slopes, steep slopes, or a combination of both. Roofers often need to use special equipment to work on very steep roofs, which is an extra expense.

Roof Design and Shape

The architectural style and design of a roof can influence the price of re-roofing. For instance, a roof might have several dormers, a steep A-frame, or multiple valleys and gables. 

A technician considers architectural design as they work up an estimate. When they talk about a roof being “cut-up,” it means the roof has a complex construction.

Waste Factor

In the roofing industry, waste factor accounts for material that is overlapped in hips and valleys. It also describes the cutoff material around penetrations, flashings, and gable ends. 

Contractors usually add approximately 10-15% to roof square footage to account for the waste factor. However, the calculation varies, depending on roof style and materials.

Roofing Squares

Contractors use the term “squares” during estimates because roof surfaces are measured in squares. A roofing square is 100 square feet, covering a 10′ x 10′ area.

Estimators determine the number of squares they need by dividing the total roof area by 100. For example, if a roof covers a 2200 square foot area, they divide 2200 by 100. The project requires 22 squares of shingles.

An online calculator can provide homeowners with a rough estimate of new roofing costs. They can input measurements, and the calculator does the math.

Licenses and Permits

Most Bucks County and Montgomery County communities require permits before roofs can be installed. Permits must be obtained from local authorities, and their costs are factored into estimates.


Contractors might need to replace or install underlayment before adding a new roof, which adds to final costs. Underlayment prices can vary based on factors like material, performance, design, and warranties. For instance, synthetic underlayment usually costs more than felt because it is of better quality, and a roll covers more area.


If technicians find that a roof doesn’t have adequate ventilation, they will need to install new vents. That impacts costs and the project’s timeline.

Contractor Fees

Roofing costs can vary widely from one company to another, and established companies typically provide an all-in-one square foot price that includes labor and materials.

Disposal Fees

When contractors need to strip off existing materials and dispose of them, they must add disposal charges to estimates. In some cases, that also includes the price of dumpster rental.

Professional Installation Makes a Difference

A roofing estimate includes the cost of installation, and it is worth it to pay for the best. Even the highest-quality roofing materials will not provide maximum performance unless they are expertly installed according to manufacturers’ instructions.

During installation, experienced technicians prepare the job site, remove existing materials, inspect the deck, and make repairs. They install the new roof and pay close attention to details such as flashing.

Technicians clean up sites, and contractors perform a final inspection. Customers can walk through with them or request a formal copy of the inspection results.

Dennis and Sons Roofers understand that replacing a home roof is a significant investment, and many factors determine the total cost. Our technicians can help customers make the best choices and provide them with accurate time and materials estimates. Contact one of our representatives today and request a quote.