M&J Exteriors in Baltimore: Residential Roofing with Licensed, Insured Work

M&J Exteriors is a licensed and insured roofing contractor serving Baltimore homeowners with asphalt shingle, metal, and flat roof replacement and repair. The company operates as a full-service residential firm, handling inspections, estimates, and installation without subcontracting labor, which distinguishes it from larger regional chains that may route work to third-party crews.

Materials and Warranty Coverage

M&J Exteriors installs architectural asphalt shingles (25–30-year manufacturer warranty), standing-seam metal roofing (lifetime material warranty, 25-year labor), and TPO flat roofing systems (10–20-year warranty depending on product grade). Shingle roofs typically cost between $8,500 and $15,000 for a 2,000-square-foot pitched roof in Baltimore, with metal roofing running 40 to 60 percent higher due to material and labor complexity. Flat roof replacement averages $6,000 to $12,000 depending on square footage and existing condition. The company backs its own workmanship with a 10-year labor warranty on all installations, meaning repairs to faulty installation are covered for a decade regardless of manufacturer terms.

Inspection and Estimate Process

M&J Exteriors conducts in-person roof inspections before issuing a written estimate. Inspectors photograph damaged or worn areas, check flashing, gutters, and attic ventilation, and identify code violations or structural issues that affect pricing. Estimates include a line-item breakdown of materials, labor, and disposal. The company operates by appointment only; there is no walk-in service. Turnaround from inspection to signed estimate is typically 3 to 5 business days. Emergency roof repairs (storm damage, active leaks) receive same-day or next-day assessment for an additional $150 emergency fee, waived if the customer signs a replacement contract within 30 days.

Licensing, Insurance, and Permit Requirements

M&J Exteriors holds a current Baltimore City roofing license and carries $2 million general liability plus workers' compensation insurance. The company obtains all required roofing permits before work begins; permit costs (typically $200–$500 for Baltimore residential roofing) are itemized separately on the estimate. Roofers must comply with Baltimore Code Article 13 (residential roofing standards) and are subject to city inspections upon completion. The company files for inspections and coordinates with the city inspector at no additional charge.

How M&J Compares to Other Baltimore Roofers

M&J Exteriors differs from national chains like Asphalt Roofing Contractors (which uses subcontracted crews and charges $12,000–$18,000 for standard shingle roofs in Baltimore with a 5-year labor warranty) by maintaining in-house labor, resulting in tighter quality control and faster turnaround. It also undercuts premium local firms like Roof Crafters Baltimore, which specializes in high-end metal and slate roofing and targets homes in Roland Park and Canton, starting at $20,000 for architectural work. For homeowners in outer neighborhoods (Dundalk, Catonsville, Woodstock) seeking affordable shingle replacement with a licensed local contractor, M&J is a practical choice. For historic homes requiring preservation-grade materials or complex flashing, or for owners prioritizing the largest brand name, Roof Crafters or specialized slate contractors are better matches.

Who It Suits and Who It Does Not

M&J Exteriors suits Baltimore homeowners with pitched or flat roofs needing straightforward replacement or repair, those who value working directly with the contractor and crew, and budget-conscious owners in middle-income neighborhoods. It does not suit owners of historic homes requiring special materials certification, those seeking emergency call-outs on Sundays (the company operates Monday–Friday only), or properties with steep, high-pitched roofs that require specialized rigging (M&J does not handle roofs over 12:12 pitch). Owners in flood-prone areas needing elevated ventilation or attic access modifications should confirm scope before signing.

First Visit and Timeline

A homeowner calls M&J Exteriors to schedule an inspection. A crew member arrives at the assigned time, spends 30 to 45 minutes on site, takes photos, and discusses findings. A written estimate arrives by email or mail within 5 business days. If the homeowner approves, M&J schedules the job; turnaround from approval to roof completion is 1 to 3 weeks depending on weather and crew availability. Installation typically takes 1 to 2 days for shingle roofs, 2 to 4 days for metal. The crew removes old material, inspects and repairs decking, installs new underlayment and roofing, and hauls away debris. A final city inspection follows before the job is signed off.

Hours and Contact

M&J Exteriors operates Monday through Friday, 7:00 a.m. to 4:00 p.m. Calls and estimates are booked through the phone line or online form; email responses may take up to 2 business days. No emergency Sunday service is available. Street parking is available at the office; the company does not maintain a showroom with physical samples on display.

M&J Exteriors fills the gap between big-box roofing franchises and high-end specialty contractors, offering licensed, permitted work and in-house crews at mid-market pricing for Baltimore homeowners who prioritize reliability and local accountability.