Expert Residential

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When it comes to your home, let’s start at the top. Having a solid roof over your head, expertly installed with quality materials assures that your family is safe and protected from the elements.


There’s always that house on a street that stands out because of it’s “curb appeal” – and most times that speaks to how the home is sided. 


Installing new windows is one of the best investments you can make for your home. Upgrading to energy efficient, easy to operate windows increases the value of your home and provides a clear view of property.

For nearly 25 years, RJ Grimes has been improving the value of homes throughout Maryland and Southern Pennsylvania.

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GAF Certified Roofing Contractor

CertainTeed Certified ShingleMaster™


For nearly 25 years, RJ Grimes has been improving the value of homes throughout Maryland and Southern Pennsylvania. As a locally-owned and operated home improvement contractor, RJ Grimes has a solid record of providing residential roofing, siding, window and gutter installations and repairs. Robert Grimes founded the company in 1991 and continues to oversee estimating, materials and onsite construction. Read More

We Are a GAF Certified Roofing Contractor

We are honored to be included in the roofing contractors that have earned the prestigious GAF Certified Roofing Contractor designation. To become and maintain our factory-certified status, RJ Grimes has certified that we are:

• Properly licensed in the states that we perform roofing work
• Fully insured for the protection of our customers.
• Have a proven reputation for providing quality roofing services
• Committed to Ongoing Professional Training to ensure quality installation

Choosing RJ Grimes as a GAF Certified Roofing Contractor is your assurance that you’re working with a quality, reputable, and dependable professional contractor.

We are a CertainTeed Certified ShingleMaster™

As a ShingleMaster™ Contractor, we are focused on superior workmanship and customer satisfaction. This is certified CertainTeed roofing credential, and represents the highest standards of excellence, quality and knowledge in the shingle roofing industry. The ShingleMaster credential assures:

• Employing a Master Shingle Applicator-qualified workforce
• Eligible for the SureStart PLUS extended warranty coverage
• Your ShingleMaster™ has shown extensive knowledge of shingle installation

When selecting RJ Grimes for your roofing needs you can be assured that you’re working with a company that is professional and knowledgeable.


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