Older homes often have character and charm, but with one inevitable challenge—drafty windows. Windows that allow air leaks can drive up heating and cooling costs and make certain rooms uncomfortable. If you’re looking for effective ways to improve insulation without disrupting the historic aesthetic of your home, here are five ways to insulate windows on older houses that are worth considering.

1. Install Weatherstripping

Weatherstripping is a simple, cost-effective way to seal gaps around your windows that allow air infiltration. You can create a tighter seal around sashes and frames by using adhesive-backed foam, rubber strips, or V-seal weatherstripping.

Measure your windows carefully before purchasing and clean the surfaces thoroughly so the materials adhere properly.

2. Apply Window Film

Window insulation film is a clear plastic sheet that adheres directly to the glass, creating a thermal barrier. It’s an ideal choice if you want to keep the look of your windows intact. These films are easy to install; most kits include double-sided tape and the film itself. Once installed, you can use a hairdryer to shrink the film, eliminating wrinkles and sealing it tightly.

3. Caulk Around Window Frames

Over time, the caulk on older window frames can crack or deteriorate, allowing drafts and moisture to seep in. Re-caulking solves this issue. Use a high-quality exterior caulk for gaps outside and a paintable interior caulk for the inside trim. Before applying, remove old caulk and clean the area thoroughly.

4. Install Wood-Clad Windows

If your old windows are beyond repair or don’t offer adequate insulation, consider replacing them with wood-clad windows. The natural wood inside adds warmth, while its classic look offers style and durability when paired with metal or vinyl exteriors.

Wood-clad windows provide excellent energy efficiency by tightly sealing air leaks while preserving your home’s vintage appeal. For the best wood-clad window installation, call a local professional instead of trying to do it yourself. Illinois homeowners can entrust their window projects to the expert team at Scientific Home Services, a premier force in manufacturing, installing, and repairing high-quality windows and doors.

With specialized knowledge of windows and doors, we craft these structures using top-notch, durable materials and install them with precise techniques. The windows we expertly, carefully install will guarantee long-term value.

5. Use Thermal Curtains

Thermal curtains insulate your windows with cozy style. These heavy, multilayered curtains trap cold air during winter months and block heat during summer. Look for curtains with insulated linings designed to reduce energy loss. For the best results, hang them close to the window and make sure they extend past the sides and bottom to create a barrier against drafts.

Stay Comfortable Without Compromising Charm

Improving window insulation in an older house doesn’t mean sacrificing style or authenticity. With these five ways to insulate windows on older houses, you have options to suit your budget and priorities. These methods boost energy efficiency and ensure your beloved home stays cozy throughout every season.