Window replacement in Mount Lebanon is one of the highest-impact projects available to pre-war homeowners, and it is one of the projects we do most frequently in this community. The original casements and double-hungs in 1920s and 1930s construction are almost invariably single-pane, and even those that were upgraded in the 1980s energy-crisis era now carry double-panes with failed seals. Replacing these windows with modern Low-E double-pane units is one of the largest single comfort improvements you can make to a pre-war South Hills home — the draft reduction and warmth in exterior rooms is immediately noticeable after the first cold week.
Why Windows Matters in Mount Lebanon
Pre-war Mount Lebanon homes were designed with large window areas relative to floor area — a deliberate architectural feature that brings light into traditional-style interiors. Those large original windows are also large original heat-loss surfaces. Modern Low-E glass with argon gas fill reduces heat transmission through those glass areas by 30 to 40 percent compared to single-pane, and up to 20 percent compared to failed double-panes. The impact on heating bills in a 1930 home with original windows is among the highest available from any single upgrade.
What's Different for Windows in Mount Lebanon
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Original casement windows in pre-war Mount Lebanon homes are single-pane — the largest single heat-loss surface in most of these houses.
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Non-standard sash proportions from 1920s and 1930s construction require field measurement of every opening; catalog sizes are not a reliable starting point.
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Modern Low-E argon-gas units reduce heat loss by 30-40% compared to single-pane in these homes, delivering a tangible comfort and utility-cost improvement.
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Windows in Mount Lebanon — FAQ
Our Mount Lebanon home has original single-pane casement windows — is replacement straightforward?
Casement replacement in pre-war homes requires custom measurement of each opening, since original window sizes rarely match modern standard dimensions. We measure every opening individually and order windows to fit precisely. The installation involves careful integration with the original plaster or plasterboard interior reveal, which our crew is experienced with.
How long does a window replacement project take?
Most replacement-window projects — covering an average home — are completed in one to two days. Larger projects with many openings or custom shapes may take longer. We confirm timing during the estimate.
What warranty do replacement windows carry?
Warranty terms depend on the product line selected. Many of our window products include limited lifetime warranties on glass and frame components. Our installation work is separately backed by Ireland Contracting's workmanship guarantee.
Free Windows Estimate in Mount Lebanon
Call Ireland Contracting at 412-492-7663 or request a quote online. No obligation — we will assess your home and give you a clear, detailed estimate.
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