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Dean Lumber Roofing


Dean Lumber & Supply, Inc. has been working with customers in Southern Maryland for over 90 years and one thing we know for sure: Education is important for the homeowner especially when it comes to your roofing needs.

Because it protects everything inside your home, roofing is one of your largest investments. So, don’t just hire anyone to replace your roof. Know what questions to ask, what material you should use to get the look and the wear you want.


FAQ Rating Guide Types of Shingles Home Styles
  Protection Ventilation Contact Us

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What you will get from Dean Lumber & Supply:

  • Variety of styles and materials in many different colors to go with any home style
  • Knowledgeable consultants and experienced subcontractors to provide installation
  • Rooftop delivery of your roofing supplies


Q? How do I know I need a new roof?

A: You see leaks on the inside of your home or in the attic, discolorations and edges of your roofing that curl.

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Look for stains inside your home around ceiling and curls in the photo below
Q? What things cause a roof to wear faster?

A: Environment effects, intense heat and lack of ventilation in your attic. See ventilation options.

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Look for Decay of shingles,
sheathing or siding
Q? How often do I need get new roofing?

A: It depends on the environment and the area you live in. If you live in an area where you get a lot of precipitation you may have more wear. Also, higher temperatures can make your shingles wear faster.



Q? We replaced our roof 15 years ago with a roof rated 25 years and we will have to replace it soon. Why does the rating say 25 years if it won’t last that long?

A: Years ago when the rating was done, it was based on pounds. The shingles were thicker and heavier. So, they lasted longer. You can use this as a guide:

Rating Expect it to last
50 years 35 years
40 years 30 years
30 years 20 years
25 years 15 years

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Types of Shingles

Wood - Cedar Shake, Slate, Asphalt, Metal and Ceramic Tile (found in many southwestern themes)

First, consider your style of home. Second, consider the material you want to use. Third, consider the wear you want to get (how many years you want your roof to protect your home). Ask our consultants to help you with this.


Home Styles

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Colonial homes look great with slate shingles
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Country homes look great with metal or asphalt
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Use cedar or metal on a farm house
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This home looks beautiful with a combination of metal on the turret and and asphalt on the rest
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Log homes look great with cedar shake
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Victorian homes look beautiful with metal on the turret and asphalt on the rest




Felt, Watershield and Flashing - Prevents leaks and shingle damage from ice and heat. Choose 15 pound or 30 pound.

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Choose a quality leak barrier to protect the areas where ice and snow will accumulate while melting.
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Allows heat to escape and prevents damage to your shingles. This will give you an idea of ventilation. Our knowledgeable consultants will help you choose your best option and our installers will take care of the rest.

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Located in the heart of Southern Maryland, Dean Lumber offers an almost endless supply of your home building or remodeling needs. Whether it is garage doors or cabinets, millwork, insulation, spray foam, shower doors, mirrors, locksets, surrounds, countertops, vanities, siding or more, Dean Lumber has you covered.

Not only does Dean Lumber carry all these fine products for your home remodeling projects, these products are from the top manufacturers, companies like: Anderson, Fiberon, Therma Tru, Simonton, Formica, Corian, Heatilator, Kraftmaid, GAF, Trex, Azek, Hurd, Amarr, Raynor, Certainteed, Hardi, and many more.

Dean Lumber understands what folks in Southern Maryland are looking for, whether a Kitchen & Bath project, or if you're looking for replacement windows, need new shingles, cabinets, lumber, or any other building products, we have it.

Dean Lumber has been serving Southern Maryland since 1920, that is 90 years of working with you and your neighbors in St. Mary's, Charles, Calvert, Anne Arundel, Prince Georges, King George, Hollywood, Lexington Park, California, Leonardtown, Great Mills, Mechanicsville, Hughesville, Charlotte Hall, Waldorf, Solomon's, Lusby, St. Leonard, Prince Fredrick, Dunkirk, Annapolis, Edgewater, White Plains, La Plata, Dahlgren, and neighboring Virginia.