Maryland Exterior Home Renovations.  Roofing, Siding, and Replacement Windows Contractor. Quality replacement at affordable prices!


   (240) 687-4556



Maryland Roofing Contractor

Maryland Roofing Contractor

Your home’s roof is the first line of defense from all the elements Mother Nature has to offer. Exterior Renovations has the experience to replace your roof quickly and affordably with a team that has worked together for over 12 years.

There are several materials available when considering a new roof. From asphalt shingles to cedar and slate, Exterior Renovations has  experienced roofing experts for asphalt shingle, cedar, and slate replacement.

Call us for a free consultation. We will examine your roof inside and out.


Do you have a leaky roof?

Leakage in your attic is an obvious warning sign, left without repairing; your decking can rot adding to the replacement cost of your roof.  We warranty labor and materials on all roofing jobs so there is no need to worry after the job is complete. We work with all the major manufacturers, GAF, CertainTeed, Tamko and Owens Corning.

For most of us the roof is an afterthought — at least until it starts to leak. In addition to keeping the house dry, the roof contributes greatly to the look of the house, so when building a new house, adding on, or re-roofing, it may pay to consider the options. When it comes to roof replacement, there are a number of areas homeowners need to be aware of—from selecting a contractor to the actual start of work of the roof replacement.

CertainTeed Landmark Lifetime shingle installed by Exterior Renovations LLC


Contact Exterior Renovations for a free estimate.   Use the form provided below or give us a call!

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Choosing the Right Shingle

There are several areas to look at when choosing a roofing shingle. To begin, you need to measure your roof. Shingles are priced per square; a square is defined as 100 square feet. Asphalt shingles, which consumers use the most, can cost from $70 to $200 per square. Keep in mind that these costs don’t include the expense of removing the old roof or the labor involved in a professional installation.

The manufacturer’s warranty can range from 20 years to lifetime. The length of the warranty is an indicator of performance and value. The contractors’ guarantee is usually for one to five years on the average. It is also important to determine the contractor’s intent to stand behind his workmanship and to service a valid complaint in a reasonable time period.

Some roof slopes can limit the choice of shingles that can be used. The slope of the roof is measured by the rise versus the run, or the number of inches vertically by the number of feet horizontally. Your roofing contractor will determine your roof slope and guide you to what type of shingle will be best for your roof.



Understanding the Process

Although you will be hiring a professional roofing contractor to replace your roof, you should familiarize yourself with certain aspects of the roofing process. There are various conditions about your roof that may limit your product choices or affect the cost of your roofing job. Here’s a list of questions and answers that are relevant to the roofing process.

1. Do I need to obtain a permit to install a new replacement roof on my home?

PERMITS ARE NOT REQUIRED IN THE GREATER DC METRO AREA!Some local ordinances require permits be obtained prior to the start of roofing work in both new and some replacement roofing jobs, depending on the locale. If a permit is required, discuss with your contractor who will obtain it and how it will be obtained.

2. Is it always necessary to tear off existing shingles before replacing a roof?

If they are torn off, who is responsible for the disposal of the old shingles?There are two options available for replacement installations. One would be to tear off the old roof before applying the new one (tear off). The second would be to lay new shingles over the existing roof (layover). While the second choice is the less expensive of the two options, it is not necessarily always the best choice.

There are advantages to tearing off the old roof before installing a new one. For example:

  • If there are any defects in the roof deck, they will be revealed when the roof is torn off. These defects should be repaired before applying the new roof.
  • If condensation problems exist in the attic, they too will be revealed when the roof is torn off. Properly designed attic ventilation can then be installed in order to help eliminate such problems.

When the old roof is torn off, waterproofing shingle underlayment can be installed before applying the new roof. This will help protect against leaks created by cyclical ice damage and wind-driven rain.

Tearing off the old roof and starting with a clean deck before installing the new roof may result in a smoother finished roof system.

Although there is added cost to these advantages, each lessens the likelihood that the validity of the manufacturer’s shingle warranty will be impaired. If the old roof is torn off, your contractor should be responsible for the cleanup and disposal of the old shingles, but make sure your contract states this clearly.

3. Why is it said that a roof should breathe? How can you determine if the roof is properly ventilated?

When contractors say a roof should breathe, they are usually referring to the ventilation system beneath the roof deck. Most shingle warranties require ventilation. An effective ventilation system will help:

  • Reduce attic heat buildup
  • Reduce attic moisture and condensation
  • Prevent weather infiltration, i.e., drifting snow, wind-driven rain
  • Prevent ice dam build-up

4. What function does shingle underlayment serve?

Some local building codes and UL standards require that a shingle underlayment (also known as roofing felt) be installed. Also, some manufacturers offer a special water proofing underlayment product (such as ICE AND WATER SHIELD which prevents leaks caused by water backup from ice dams—a common condition in many winter snow areas. Protection against ice dams can be obtained by using a waterproofing shingle underlayment at the eaves or lower edges of the roof, in addition to installing adequate ventilation and proper insulation in the attic floor.


Warranties extend from 25 years for what is commonly called a 3 Tab shingle, to a lifetime shingle, which offers an architecturally stylish look, yet is affordably priced!

Contact us today for your free roofing estimate from a trusted and reliable roofing contractor. We also handle storm damage estimates and repairs, working with all insurance companies!

CALL US TODAY! (301) 956-7303


Customer service is our focus.  We are committed to providing superior external home renovation services.  Our professionals have years of experience in home renovation projects We pride ourselves on the quality of our work and we are dedicated to completing each project on time, within budget and in a professional manner.