- +1 (888) 333-9313
- johndoctor@gmail.com
- 838 Ritchie Hwy Unit 6, Severna Park, MD 21146, United States
- Mon - Sat: 9:00am - 9:00pm
Window Doctor delivers custom manufactured double-hung windows backed by a lifetime transferable warranty that covers both product and installation. We handle complete replacement projects, never quick fixes or repair jobs. Our factory certified teams measure each opening to exact specifications, preventing the gaps and drafts that come from forcing stock sizes into openings that don’t match. Every window operates smoothly, seals properly, and adds documented value if you sell your home.
Double-hung window replacement is about accuracy and results that last. Each opening is measured to exact specifications so your new windows fit properly, operate smoothly, and deliver the insulation your home needs. Factory certified installation means every sash, jamb, and seal is handled with care, backed by a transferable lifetime warranty that protects your investment for as long as you own your home.
Precise measurement of each rough opening establishes exact dimensions for custom manufacturing specifications.
Custom double-hung units are manufactured to exact measurements and delivered ready for professional installation.
Factory certified installers fit each window, seal the frame, and verify smooth sash operation.
Our recommendations are built on one principle: tell you exactly what your home needs and why it matters. Every decision is explained in clear, practical terms so you understand the value behind each choice. We never pressure you toward upgrades that don’t make sense for your situation, and we stand behind our work with a lifetime warranty that covers both the product and the installation, transferable if you sell.
Properly installed windows seal tight against the frame, blocking cold air leaks year-round.
Double-pane Low-E glass reduces heat loss in winter and heat gain in summer.
Custom-fitted sashes open and close easily without sticking or jamming.
Fresh frames and clean glass lines instantly improve your home's exterior appearance.
Thick insulated glass blocks outside noise, creating a calmer living space inside.
New windows backed by a transferable lifetime warranty attract buyers when you sell.
Factory certified installation follows precise measurement, flashing, and sealing protocols that protect thermal performance. Each double-hung window is squared, shimmed, and secured according to manufacturer standards to prevent air leaks and operational failure. Proper installation protects your lifetime warranty and ensures smooth sash operation for decades.
Every window opening is measured to exact specifications, preventing gaps and draft problems before manufacturing begins.
Installers meet strict manufacturer standards, ensuring proper technique and direct warranty support without finger-pointing.
Windows built to fit measured openings, not standard sizes forced into place.
Product and installation covered for life, adding documented value if you sell your home.
Most single-window replacements finish in a few hours. Full-home projects typically take one to three days, depending on the number of openings and any trim work required.
We supply and install custom manufactured windows measured for your openings. We do not install windows you’ve already purchased, and we don’t offer repair-only or glass-only services.
We remove and replace damaged framing as part of the installation. Rotted sills, jambs, or trim are addressed before your new windows go in, so everything is structurally sound.
Insert installation fits a new sash inside your existing frame. Full-frame removes everything down to the rough opening, allowing us to inspect and replace any damaged wood or flashing.
Yes. The lifetime warranty covers both product and installation, and it transfers to the next owner if you sell. That documented coverage adds measurable value during a home sale.
Reach out to Window Doctor for precise measurements, factory certified installation, and double-hung windows built to last in Severna Park homes.
