Windows & Replacement Windows That Boost Energy Efficiency And Curb Appeal

How Our Window Replacement Process Works

We make upgrading simple and organized from the first call to final walkthrough. Here is what to expect when you choose Grellis Construction for your project.

1. Consultation and Options: We measure, discuss goals, and review styles like double-hung, casement, slider, bay, and picture windows.
2. Clear Proposal: You receive a written scope of work with product specs and scheduling details, so there are no surprises.
3. Pre-Installation Prep: We protect floors and landscaping, confirm sizes, and stage materials for an efficient install day.
4. Removal of Old Units: Careful extraction prevents damage to interior casing and exterior trim.
5. Weather-Tight Installation: Frames are squared and shimmed, gaps are insulated with low-expansion foam, and seams are sealed.
6. Detail Finish: New interior casing and exterior trim are set flush, caulked cleanly, and hardware is adjusted for smooth operation.
7. Final Walkthrough: We test every sash, clean the work area, and review maintenance tips so your windows look and work their best.

As a trusted remodeling contractor, we coordinate schedules, maintain clear communication, and treat your home with respect from start to finish. Many homeowners pair their project with exterior upgrades such as vinyl siding or asphalt roofing to achieve an efficient, cohesive look throughout the house.

Windows & Replacement Windows Done Right

When your goal is long-term performance, the details matter. We help you select glazing packages with low-E coatings, warm-edge spacers, and gas fills that balance energy savings with clear, natural light. Our crews install to manufacturer specifications so warranties remain valid and your new units deliver the comfort and efficiency you expect.

From color-matched trim to thoughtful placement of safety glass near doors and wet areas, every decision is made to suit your home's layout and your lifestyle. This careful approach ensures your upgrade looks intentional, not pieced together.

Surfaces, Materials, And Project Types We Handle

Every home is different, so our team is trained to work with a wide range of wall systems and finishes. Whether your exterior is brick, fiber cement, stucco, or existing vinyl cladding, we integrate proper flashing and backer rod to keep water out and comfort in. Interior finishes are protected during removal, then trimmed with crisp, paint-ready profiles to match your aesthetic.

We install many window types and configurations to fit your needs. Common solutions include:

• Double-hung, casement, awning, and slider units for bedrooms, kitchens, and living spaces
• Bay, bow, and picture windows to open views and increase natural light
• Basement hoppers and egress-compliant units for safety and code considerations
• Privacy and tempered glass options for baths and near-door placements
• Durable vinyl, fiberglass, composite, or clad-wood frames tailored to maintenance preferences

Simple care goes a long way. Keep weep holes clear, wash seals with mild soap, and inspect exterior caulk annually, especially after intense weather. These small tasks help your upgrade look great and perform reliably.

Local Conditions That Affect Window Performance

Homes here experience humid summers, sudden thunderstorms, and winter cold snaps. That seasonal mix can stress seals, swell wood trim, and invite condensation on older single-pane units. Choosing insulated glazing and tight installation protects finishes and makes rooms more comfortable through quick weather swings.

For lasting results you can feel in every season, choose windows & replacement windows tailored and installed for Prince George's County.

Why Homeowners Choose Grellis Construction

We focus on fit, finish, and follow-through. Our crews arrive prepared, protect your home, and communicate clearly so your project stays on track. You get craftsmanship that aligns with the manufacturer's best practices and real-world experience earned on homes like yours.

• Clear, itemized proposals and scheduling that respects your time
• Product guidance that balances value, performance, and style
• Clean worksites and courteous installers who treat your home like their own
• Exterior integration expertise if you plan future improvements like vinyl siding or asphalt roofing

When you are ready to compare options, call 301-780-3792 for fast scheduling and helpful guidance. Our team delivers windows & replacement windows with careful attention to detail, so you get dependable comfort and a polished look that lasts.