Windows (I01)

Windows are critical for energy efficiency, comfort, and home value – but Utah’s temperature extremes and high altitude UV demand quality products and expert installation.

This BidScope guides you through window types: double-hung (upper and lower sash both operable, most common, easy cleaning), casement (crank-out, best air seal, modern look), sliding (economical, horizontal operation), awning (top-hinged, ventilation during rain), picture (fixed, maximum glass area and views).

Learn frame materials: vinyl (low maintenance, good insulation, most popular), wood (traditional, paintable, requires maintenance, excellent insulation), aluminum (slim profiles, commercial look, poor insulation without thermal break), fiberglass (most durable, stable, expensive, paintable), and composite (wood-like appearance, low maintenance).

Understand glazing: double-pane minimum for Utah (U-factor 0.30 or better), triple-pane for maximum efficiency (U-factor 0.20 or better), low-E coatings to reduce heat transfer, argon or krypton gas fills between panes, warm-edge spacers reduce condensation.

Master energy ratings: U-factor measures heat loss (lower is better, 0.20-0.30 range for Utah), Solar Heat Gain Coefficient (SHGC – lower blocks more heat, 0.25-0.35 good for Utah’s sunny climate), air leakage rating (lower is better).

Navigate installation quality: proper shimming and leveling, insulation around rough opening (spray foam common), interior and exterior trim work, flashing for water management, sealant at siding interface.

Learn replacement options: full-frame replacement (remove old frame, best for rotted frames or siding updates), insert/retrofit (new window in existing frame, faster and cheaper but smaller glass area), new construction windows for additions.

Understand special considerations: egress requirements for bedrooms (minimum size and height from floor), tempered glass requirements (near doors, bathrooms, hazardous locations), high-altitude UV in Utah (quality glass and frames resist degradation).

Know when to replace: condensation between panes (seal failure), drafts and high energy bills, difficulty operating, rot or damage to frames, single-pane windows.

Calculate energy savings from upgrades.

Budget realistically: vinyl double-hung $300-800 per window installed, wood windows $500-1,200, casement windows $400-900, full-house replacement $8,000-25,000+ depending on size and quantity.

This tool ensures your window investment delivers comfort, efficiency, and lasting value.

What’s Included:

• Window types (double-hung, casement, sliding, awning, picture, bay/bow)
• Double-hung windows (both sashes operable, tilt-in cleaning, most common)
• Casement windows (crank-out, best air seal, modern)
• Sliding windows (horizontal operation, economical)
• Awning windows (top-hinged, rain ventilation)
• Picture windows (fixed, maximum glass, views)
• Bay and bow windows (project outward, seating or display)
• Frame material options (vinyl, wood, aluminum, fiberglass, composite)
• Vinyl windows (low maintenance, good insulation, most popular, color-through)
• Wood windows (traditional, paintable, insulation, maintenance required)
• Aluminum windows (slim, commercial, poor insulation without thermal break)
• Aluminum-clad wood (wood interior, aluminum exterior)
• Fiberglass windows (most durable, stable, expensive, paintable)
• Composite frames (wood-like, low maintenance)
• Glazing options (double-pane, triple-pane, coatings, gas fills)
• Double-pane minimum for Utah (U-factor 0.30 or better)
• Triple-pane maximum efficiency (U-factor 0.20 or better)
• Low-E coatings (reduce heat transfer, UV protection)
• Low-E2 vs Low-E3 vs Low-E4 coatings
• Argon gas fill between panes
• Krypton gas fill (better than argon, expensive)
• Warm-edge spacers (reduce condensation at glass edge)
• Energy ratings (U-factor, SHGC, air leakage)
• U-factor (heat loss – lower is better, 0.20-0.30 for Utah)
• Solar Heat Gain Coefficient (SHGC – lower blocks heat, 0.25-0.35 for Utah)
• Air leakage rating (lower is better)
• ENERGY STAR certification for climate zone
• Installation quality factors
• Full-frame vs insert/retrofit replacement
• Full-frame (remove old frame, best for rot or siding updates)
• Insert/retrofit (new in existing frame, faster, smaller glass)
• Proper shimming and leveling
• Insulation around rough opening (spray foam)
• Flashing for water management
• Interior and exterior trim
• Sealant at siding interface
• Operating hardware and locks
• Special code requirements
• Egress windows for bedrooms (minimum 5.7 sq ft, 24-inch height, 20-inch width)
• Egress window well requirements
• Tempered glass locations (near doors, bathrooms, hazards)
• High-altitude UV considerations in Utah
• Window replacement decisions (seal failure, drafts, efficiency, operation, rot)
• Energy savings from window upgrades
• Cost factors ($300-800 vinyl double-hung, $500-1,200 wood, $400-900 casement, $8,000-25,000+ full house)
• Finding qualified window installers
• Manufacturer certifications
• Warranty (glass, frame, installation)