Expert repair and restoration of single-pane windows for historic and vintage homes across the DMV. We match original glass, restore glazing, and install storm windows to improve efficiency while preserving character.
Single-pane windows use a single sheet of glass set into a wood or metal sash with glazing compound. Here is how they are constructed and how storm windows improve their performance.
Traditional single-pane window with wood frame, glazing compound, and divided light muntins.
Adding a storm window creates an insulating air gap, dramatically improving thermal performance.
We specialize in glass repair for the historic homes and neighborhoods that give the DMV its unique architectural character.
Federal and Victorian row houses with original single-pane glass dating to the late 1700s and early 1800s.
One of Virginia's oldest communities with colonial and Federal architecture. Many homes have original six-over-six and nine-over-nine single-pane windows.
The largest historic residential neighborhood in DC, with row houses spanning the mid-1800s to early 1900s.
A historic Maryland suburb with a mix of Victorian, Queen Anne, and craftsman homes. Many feature original single-pane windows with distinctive character.
Historic downtown Leesburg features colonial and Federal buildings with period-appropriate single-pane glass.
Known as "Azalea City," Takoma Park has a large inventory of Victorian and craftsman homes with original single-pane wood windows requiring specialized maintenance.
We replace broken or cracked single-pane glass with matching glass in the same thickness, texture, and visual character. For historic homes,
Failed or missing glazing compound (the putty that holds the glass in the sash) is one of the most common issues with single-pane windows.
We repair wooden sash components including stiles, rails, and muntins. For rotted or damaged wood,
Interior and exterior storm windows create a secondary air barrier that significantly improves the insulation of single-pane windows — approaching double-pan...
New weatherstripping around the sash reduces air infiltration and improves comfort without altering the window appearance. We use zinc, bronze,
Many older single-pane windows use a sash weight and cord system for operation. We repair and replace broken cords, stuck pulleys, and missing weights to restore smooth window operation.
The right choice depends on your home, your budget, and whether your property is in a historic district.
When replacing or upgrading single-pane glass, selecting the right glass type improves comfort, efficiency, and longevity.
Low-emissivity coatings reflect infrared heat while allowing visible light through.
When preservation guidelines allow, upgrading from single-pane to an insulated glass unit with argon gas fill delivers the best thermal performance.
Tempered glass is four to five times stronger than standard glass and breaks into small, rounded fragments instead of sharp shards.
Use our free Window Style Finder tool to identify your window type and get personalized repair recommendations for your home.
Open Window Style FinderIGU repair, seal replacement, and energy-efficient upgrades
Learn MoreCrank-out window glass repair and mechanism service
Learn MoreTop-hinged window glass and hardware repair
Learn MoreMulti-panel specialty window repair and replacement
Learn MoreLarge fixed-frame window glass replacement
Learn MoreComplete guide to preserving historic window glass
Learn MoreSchedule a free assessment for your single-pane windows. We will recommend the best repair or upgrade option for your home.
Expert Glass Repair -- Fully Insured -- Serving DC, MD & VA