A new roof is a significant investment, but it is also one of the most important parts of your home. It protects your home from the elements and can also impact the appeal of your home to potential buyers.
This guide will help you make an informed decision when it comes to re-roofing. You need to consider many factors, such as the cost, the type of roofing material, the climate, and the condition of the existing roof. You also need to decide whether you want to add a new layer of roofing to the existing roof or tear off and replace the old roof.

Seven Signs You Need a New Roof


The following are indicators that your roof should be re-shingled or replaced in order to maintain your home’s defense against the elements:

  • Your roof looks bad:

Eba Roofing- Your roof looks bad

The cosmetics and aesthetics of a home do matter to both homeowners and potential buyers. If your roof is worn, has algae staining that won’t clean up or is covered in patches of moss, boosting its appearance with a new layer of shingles will make a very noticeable difference.

If you don’t think any of these reasons for getting a new roof apply to you, then you can probably stop reading this now. However, if you’re not sure about your roof’s condition, it’s always better to be safe than sorry. You can hire a home inspector or roofing contractor to come and take a look at your roof as a preventative measure before any damage is done.

Can I Put Another Layer of Shingles on My Roof?

Eba Roofing- Putting Another Layer of Shingles on Roof


While universal building codes allow for up to two layers of shingles on a roof, it is sometimes advisable to tear off the existing single layer and start fresh:

Roof Deck Repair Considerations


When you do roof decking, you’ll usually find that the constant ripping and rearranging of the decking is good for getting it to dry faster, but at the same time, you want to protect it. You can seal any small holes with with roofing cement or roofing tar. You can also use roofing cement to patch any larger holes.

If you are adding a second layer of shingles instead of tearing off the previous layer, then an inspector or contractor should:

Tearing off and replacing roof decking or sheathing costs between $1.50 and $3.25 per square foot, depending on whether all or only select plywood or sheathing sheets require repair.

Roof Deck Underlayment – The Last Line of Defense


What is fastened to the roof deck before shingles are installed will affect the way the roof is able to resist moisture. There are several components that are required to be installed under the shingles for underlying roof protection: over the shingles, that is under the existing roof, and that is to be installed for retaining walls.

Look at each:

Roof underlayments: Here’s some finished rolled roofing material that is installed horizontally starting at the eaves. Each successive layer should actually overlap the last layer by 2 or 3 inches on roofs with a 4:12 pitch and steeper. There are several types and grades of roofing underlayment:

  • Synthetic: The trend in roofing is toward synthetic underlayment. It is much cheaper than asphalt products, but synthetic materials provide many advantages including superior moisture resistance as the shingles turn from new to old. Some synthetic, natural underlayments can also be made breathable. These are sometimes made from polypropylene or polyethylene, and can be made from recycled fiberglass.Popular brands include GAF DeckArmor and FeltBuster, Titanium and Owens Corning ProArmor, however, there are many other companies on the market that offers good performance here as well.

  • Moisture and Ice Barrier aka Ice and Water Shield: A large volume of water can flow through valleys where roof sections come together. It is easy to wash underneath shingles. The reason lift platforms are designed to have layers of moisture barrier is because there are a number of extremely cold winter periods that occur in most areas of the country. GAF’s WeatherWatch is a moisture barrier and Owens Corning calls its product WeatherLock.
  • Starter strip or shingles: All roofers install a row of or a starter shingle material at the eaves to provide additional protection against wind-blown moisture and ice dams. In high-wind areas, some contractors also tend to install starter shingles or strip on roof rakes, the edge of the vertical run of roof from the eave to the peak on gable sections.

Roof Ventilation is Essential to a Durable and Well-Functioning Roof


Excessive moisture and heat in the attic quickly damage your roof. Humidifier usage may have your windows and doors fogging, and it’s frustrating to find that your attic is damp from humidifier usage. If that moisture can’t get out of the attic, it will cause havoc such as mold and mildew, rotted roof deck and damaged shingle.
There are various key ventilation points in any attic, which most importantly allow most of the weather and air to be vented.

Stop Ice Dams with Adequate Attic Insulation


The right amount of insulation also prevents the hot water from freezing on the hot water heater. Insulation helps the hot water remain hot and will prevent ice dams when there is snow on the roof.

In winter, your attic should be as cold as the outside air. When you heat from your home because there is insufficient insulation (R-60 in freezing climates), snow in the roof melts. With the loss of water, the icing on the roof starts to freeze and the roofpans become a water butt. A water cap forms on the eaves, blocking the runoff that would fertilize and provide nourishment for the trees on the roof.

Attic insulation installed costs between than in most homes in this area. There are of course a few areas in which a dedicated attic insulation program can save you thousands of dollars in your home’s overall energy bill.

What are the Main Roofing Options?

Asphalt shingles dominate the current roofing market due to its durability and it ability to handle the changes in the roofing industry due to thermal and chemical changes. It is also extremely cost efficient compared to traditional shingles.


Asphalt Shingles Types and Features

Since asphalt (75% sloped roof) and metal (15% sloped roof) own such a large part of the market, we want to take a closer look at each.
Fiberglass asphalt shingles are offered in three basic grades:

3-tab shingles are available in only 60 MPH to 80 MPH wind uplift, architectural/dimensional shingles are only rated for 110 MPH wind uplift, but with enhanced installation techniques, the warranty can be boosted to 130 MPH.

The solar/heat resistant “cool” shingles, impact resistant shingles and shingles treated to resist algae staining are valuable options to consider if your climate conditions require it. Most residential roofs come as basic three-tab shingles, but there are also other basic shingles available.

Popular Asphalt Shingle Brands

GAF & CertainTeed are two famous roofing brands for their premium quality and comprehensive warranty.GAF shingles are known for their broad range of styles and their overall great value. The most popular brand of limestone shingles on the global market is GAF Timberline HDZ architectural aka dimensional shingles.
Other top brands to consider: Owens Corning, IKO, Tamko, Malarkey, and Atlas.

Metal Roofing Types and Features

Metal roofing has come a long way in the last few decades and now is a viable alternative for any home including upscale luxury homes.

Wind Mitigation Considerations in Hurricane Zones

The Gulf Coast States such as Florida, Louisiana, and Texas, and Eastern seaboard of the US experience severe winds, such as tropical storms and hurricanes. These below tips will help:

How Much Does a New Roof Cost?


There’s a wide range of costs to replacing roofs. Factors that affect cost include the type and grade of material used, the complexity of the roof including the slope and the number of valleys it has. In general, replacements and renovations of residential and nonresidential home roofs cost less in the South and more than average in the Northeast and on the West Coast.

Costs are per square (or 100 square feet of roof material area) of roofing material fully installed, excluding the materials used for the roof:

  • Asphalt shingles: $400-$850
  • Metal roofing: $850-$1,850

Hiring a Roofer

Make sure they’re licensed, bonded, and insured. This will protect you against liability, and a job not properly completed.

When you ask people who have recently replaced roofs questions such as:

Once you narrow your list, check BBB reports, Google and Yelp reviews to find out about the roofers. Finally, get estimates from at least three local roofing contractors, and negotiate together:

Don’t let low cost be the only factor you consider or be deceived by others into believing you do not need to perform exterior work for $500 a month. These and many other things are important factors when you choose a roofer.

If you want to expedite the process and get the job done quickly, then you need to make sure that you are pre-screened for the important issues that should be discussed and that you know what to expect when the estimate comes.

What a Great Roof Looks Like and Being Sure You Get One.

Several other keys to getting a new roof you enjoy now and a certain one that will serve you well in the years ahead are the following:

Ultimately, the goals are to choose the perfect roof, see who offers the best estimate and then decide which roof to get.