Seamless gutter installation, replacement, and gutter guards, sized to the roof and pitched to move water. This page covers Great Mills, plus Lexington Park and California: 17 ZIP codes in St. Mary's County.
New runs, a full replacement, or guards specced to the gutter profile. The choice is made from the roof, not from the city name.
New gutters and downspouts sized to the roof and pitched to move water.
The old system comes off, the fascia gets a look, then a system that matches the roof goes up.
Water in, leaves out. Specced to the gutter profile, not a universal clip-on.
Water sheets over the edge instead of reaching the downspouts.
Runs that dip or separate from the fascia stop moving water.
Stains, peeling paint, or soft fascia boards behind the gutter.
Puddles, washed-out mulch, or a damp basement near the downspouts.
ExteriorMax installs roofing, siding, windows, gutters, doors, and decks in Great Mills, Maryland under MD 142964. Maryland, Virginia, West Virginia, and Pennsylvania are authorized service areas. The business address is 6301 Ivy Ln, Suite 120, Greenbelt, MD 20770.
The ZIP codes below are the zone list that names Great Mills, along with Lexington Park and California. They are not a city-limit map of Great Mills alone.
Photos on this page are examples of ExteriorMax work and the products we install. They are not a job at a specific address.
Lexington Park, California, Great Mills. St. Mary's County. Zone MD-STMARYS-PATUXENT. ZIP codes: 20619, 20626, 20627, 20628, 20630, 20634, 20636, 20653, 20667, 20670, 20674, 20680, 20684, 20686, 20687, 20690, 20692.
From 2025-11-11 through 2026-11-11, National Weather Service severe reports for St. Mary's County include this headline: 59 mph winds recorded in St. Marys County. That is a county record. It does not mean every home in these ZIP codes experienced that weather. Wind is not how we decide a gutter is failing. Overflow, sagging runs, and water at the foundation are. Those get looked at on the house.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule. Financing details.
Yes. This page covers Great Mills, plus Lexington Park and California: 17 ZIP codes in St. Mary's County under MD 142964.
Installation, Replacement, Gutter guards. New runs, a full replacement, or guards specced to the gutter profile. The choice is made from the roof, not from the city name.
Sized to the roof, Fascia checked, Seamless runs, hidden hangers, Downspouts and walkthrough.
Permit rules differ by county. ExteriorMax handles the permit and HOA packet for the job. We do not publish a separate permit fee for Great Mills.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule.
Also in Great Mills: Roofing in Great Mills · Siding in Great Mills · Windows in Great Mills · Doors in Great Mills · Decks in Great Mills.
Company-wide gutters page · Seamless gutters, replacement, and guards · Great Mills overview
California gutters · Lexington Park gutters · Charlotte Hall gutters · Leonardtown gutters · Mechanicsville gutters
Great Mills, plus Lexington Park and California. ExteriorMax installs roofing, siding, windows, gutters, doors, and decks in Great Mills, Maryland under MD 142964. Maryland, Virginia, West Virginia, and Pennsylvania are authorized service areas. The business address is 6301 Ivy Ln, Suite 120, Greenbelt, MD 20770.