Restoration vs. Replacement
The case for restoration, and why replacement is usually the more expensive decision in the long run.
The Foundation
Most homeowners are told their only option is replacement. That's rarely true, and for a historic home it's usually the worse choice.
Source: National Trust for Historic Preservation
Pre-1940s wood windows were milled from old-growth timber: dense, tight-grained wood with a natural rot resistance modern lumber doesn't have. Properly maintained, they outlast any vinyl or composite replacement.
Source: Barron Restorations professional assessment
Every replacement fills a landfill with wood that took centuries to grow, then burns more energy manufacturing its substitute. Restoration keeps those materials in your home, doing their job.
Source: Window & Door Manufacturers Association
Modern replacement windows fail in 15–20 years. Your original windows, properly restored, can last indefinitely. Over a 50-year horizon, restoration is almost always the cheaper path.
Side by Side
Common Questions
Most draft comes from failed weatherstripping and deteriorated glazing, and a standard restoration fixes both. Add Indow interior storm inserts and restored originals match or beat the energy performance of modern replacements.
Window for window, quality restoration usually costs about the same as quality replacement, sometimes less. A restored window lasts indefinitely and a replacement fails in 15–20 years, so the long-term math isn't close.
In our experience, fewer than 10% of "hopeless" windows actually require full replacement. Most rot is surface-level and can be addressed with commercial-grade epoxy patching at a fraction of replacement cost. Get a second opinion before you replace.
Modern replacement windows are manufactured from fast-grown softwood lumber with open grain that absorbs moisture and fails within a generation. Original old-growth windows, properly maintained, have already proven they can last centuries.
Industry Resources
For independent research on historic window restoration, we recommend the Window Preservation Alliance, the national industry organization dedicated to the preservation of historic windows.
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