Montgomery County, Maryland
Windows, Siding, Roofing & Gutters
in Montgomery County, MD
Hallmark Windows & Siding has served homeowners across Montgomery County for over 20 years — delivering energy-efficient windows and durable siding with expert installation and real manufacturer warranties.
Get Your Free EstimateTrusted Window & Siding Contractor in Montgomery County
From Rockville and Bethesda to Silver Spring and Germantown, Hallmark Windows & Siding has helped thousands of Montgomery County homeowners improve their homes with high-performance replacement windows and premium siding — all backed by transferable manufacturer warranties and our own workmanship guarantee.
We are a locally operated, fully licensed and insured Maryland home improvement contractor. Every project is led by our trained installation crews — no subcontractors — so quality is consistent from start to finish.
- ✓ Free in-home estimates with no-pressure quotes
- ✓ Energy Star certified windows — reduce heating & cooling bills
- ✓ Professional installation — our own trained crews, not subs
- ✓ Flexible financing options available
- ✓ Serving all of Montgomery County, MD
Get Your Free Estimate
No pressure. We come to you.
Replacement Windows
Window Replacement in Montgomery County, MD
We install a full range of replacement window styles — all Energy Star certified for Maryland's climate, with Low-E glass, argon fill, and lifetime limited warranties. Most installations are completed in a single day.
Double-Hung Windows
The most popular window style for Maryland homes. Both sashes tilt in for easy cleaning from inside — no ladders needed. Ideal for bedrooms, living rooms, and anywhere ventilation matters.
- Tilt-in sashes for easy interior cleaning
- Low-E glass with argon fill
- Multiple grid patterns & colors
- Energy Star certified
Casement Windows
Casement windows crank outward on a side hinge, creating a full-opening vent and an exceptionally airtight seal when closed — one of the most energy-efficient styles available.
- Full-width opening for maximum airflow
- Compression seal — no air leakage
- Multi-point locking hardware
- Energy Star certified
Bay, Bow & Picture
For larger openings, sweeping views, or architectural focal points. Bay and bow windows add dimension and interior space; picture windows maximize light with an unobstructed fixed-glass panel.
- Custom sizing for any opening
- Insulated glass throughout
- Adds curb appeal & interior volume
- Energy Star certified
Sliding Patio Doors
Replace drafty patio doors with energy-efficient sliding glass doors. Smooth rolling hardware, multi-point locking, and frame colors that coordinate with your windows.
- Low-E insulated glass
- Multi-point security lock
- Screen included
- Lifetime limited warranty
Maryland Climate
Built for Hot Summers and Cold Winters
Montgomery County homeowners deal with both sides of the climate spectrum. Our windows are selected for Mid-Atlantic conditions — keeping heat out in July and cold out in January.
Low-E Glass & Argon Fill
Reflects radiant heat in summer and retains warmth in winter. Reduces UV fading on floors and furniture year-round.
Energy Star Certified
Certified for the Northern-Central climate zone covering Maryland. Homeowners typically see 12–15% lower heating and cooling costs after replacement.
One-Day Installation
Most whole-home window replacements in Montgomery County are completed in a single day by our own trained crews — no subs, no surprises.
Lifetime Limited Warranty
Manufacturer warranty on glass and frames, plus Hallmark's own workmanship guarantee. Fully transferable if you sell your home.
Roofing
Roof Replacement in Montgomery County
A failing roof puts your entire home at risk. Hallmark's roofing crews serve Montgomery County homeowners with fast, professional roof replacements using top-rated shingle brands. Most residential roof replacements are completed in a single day.
Architectural Shingle Roofing
Dimensional shingles add depth and character to your roofline while delivering superior durability and a longer lifespan than standard shingles. Available in a wide range of colors to complement your home's exterior.
Learn More →Standard 3-Tab Shingle Roofing
A reliable, cost-effective roofing option. Standard 3-tab shingles provide solid protection and a clean, traditional look. An excellent choice when budget is the primary consideration.
Learn More →Gutters & Gutter Guards
Gutter Installation & Protection in Montgomery County
Clogged or failing gutters lead to water damage, foundation issues, and landscape erosion. Hallmark installs seamless gutters and LeafBlaster Pro gutter guards that keep Montgomery County homes protected year-round -- without the hassle of seasonal cleaning.
Seamless Gutters
Custom-fabricated on-site in 5" and 6" K-style profiles. Seamless gutters have no mid-section joints -- the most common source of leaks -- and are available in a full range of colors to match your home's trim and siding.
Learn More →LeafBlaster Pro Gutter Guards
The last gutter guard you'll ever need. LeafBlaster Pro uses a micro-mesh design to block leaves, pine needles, shingle grit, and debris while allowing rainwater to flow freely. Eliminates the need for dangerous ladder climbs every fall.
Learn More →Siding Replacement
Siding Installation in Montgomery County, MD
New siding dramatically improves curb appeal, weather resistance, and home value. We install two leading siding systems suited for Maryland homes.
Premium Vinyl Siding
Our vinyl siding is engineered with a thicker wall profile and UV-stable color that won't peel, rot, or need painting. It is an excellent value for homeowners looking to refresh their exterior and lower maintenance costs.
- ✓ Available in 20+ colors and profiles
- ✓ Insulated backing option for R-value
- ✓ No painting, caulking, or sealing needed
- ✓ Limited lifetime manufacturer warranty
James Hardie Fiber Cement
James Hardie is the gold standard in fiber cement siding — resistant to moisture, insects, fire, and impact. HardiePlank lap siding replicates the look of real wood with none of the upkeep, and holds its ColorPlus finish for 15+ years.
- ✓ Fire- and impact-resistant
- ✓ ColorPlus baked-on factory finish
- ✓ Pest and rot resistant
- ✓ 30-year warranty on materials
Why Choose Us
Why Homeowners Choose Hallmark
Local Maryland Contractor
We are a Maryland-based business — not a national chain. Your money stays local and you deal with the same people from quote to completion.
Our Own Install Crews
We never use subcontractors. Every installation is performed by our trained, background-checked team members — guaranteed quality and accountability.
Energy Star Certified
Our windows are Energy Star certified for the Northern climate zone, helping you reduce utility bills year-round in Montgomery County's climate.
Real Warranties
We back every project with manufacturer warranties on materials and our own workmanship guarantee. If something is wrong, we make it right.
Communities We Serve
Serving All of Montgomery County
From urban neighborhoods to suburban communities and rural townships, we serve homeowners throughout all of Montgomery County, MD.
FAQ
Common Questions from Montgomery County Homeowners
How long does window replacement take?
Most window replacement projects in Montgomery County are completed in a single day. A full-house replacement of 15–20 windows typically takes one to two days depending on the style and complexity. We protect your home during installation and clean up completely before we leave.
Do I need a permit for window or siding replacement in Montgomery County?
Permit requirements vary depending on the scope of work. In many cases, like-for-like window replacement does not require a permit, while larger alterations or siding replacement on certain structures may. We handle permit research and procurement for your project as part of our service.
What is the difference between vinyl and James Hardie siding?
Vinyl siding is lighter, lower in cost, and completely maintenance-free. James Hardie fiber cement siding is heavier and more expensive but offers superior fire resistance, impact resistance, and a more authentic wood appearance with a factory-baked ColorPlus finish. Both are excellent long-term investments for Maryland homes.
Will new windows really lower my energy bills?
Yes. Our Energy Star certified windows with Low-E glass and argon fill significantly reduce heat transfer through the glass. Most homeowners in the Montgomery County area report noticeable reductions in drafts and HVAC run time after replacing older single-pane or worn double-pane windows.
Do you offer financing?
Yes. We offer flexible financing options to make window and siding replacement accessible for most budgets. Ask about current promotional rates and monthly payment plans when you request your free estimate.
Ready to Upgrade Your Montgomery County Home?
Get a free, no-obligation in-home estimate from Hallmark Windows & Siding. We serve all of Montgomery County, MD.
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