Four & Three Season Sunroom
Comparison Chart For Madison WI

Items
Four Season Sunroom Three Season Sunroom
Months Used Year Round March-November
% Built 95% 5%
Floor R-25 Plastic Wrapped Insulated Uninsulated (optional R-19, R-25)
Walls
  • Thermally Improved Aluminum Structure
  • Insulated Vinyl Sashes & Frames
  • Aluminum Structure
  • Aluminum Sashes & Frames
Windows
  • Non-directional - Slide Either Direction
  • Full Screen - Pops out (easy cleaning/max air flow)
  • 7/8” Double-pane Glass - Argon Gas Filled
  • Low-e Coating - Reduces 75% Ultraviolet Light
  • Protects Fixtures & Fabric from Sun Damage
  • Tempered Safety Glass
  • Intercept Warm Edge Spacer
  • Energy StarTM Rated Windows
  • EnviroTherm Injected Foam Filled Frames
  • Added Strength & Insulation
  • Directional – Left Only or Right Only
  • Half Screen - Slides
  • Single-pane Glass - No Gas
  • No low-e Coating for Ultraviolet Light
  • Sun Damage to Fixtures & Fabrics
  • Tempered Safety Glass

Other Options in the 3-Season Marketplace:

  • Four Track or Sliding Plastic Windows
  • Double-Pane Glass (aluminum sash/frame)
Roof
  • R-26 or R-40 (optional R-13)
  • Styles – Gable/A-Frame or Studio/Slanted
  • Up to an 8/12 pitch (3/12 min for shingles)
  • R-13 (optional R-26, R-40)
  • Styles – Gable/A-Frame or Studio/Slanted
  • Up to an 8/12 pitch (3/12 min for shingles)
Climate Control Heating/Cooling/Heat Pump Unit or Any Option Portable Space Heaters
Cost Difference
  • Labor (approx equal to 3-Season)
  • Materials about 15% more
  • Heating & Cooling Cost
  • Labor (approx equal to All-Season)
  • Materials about 15% less
  • Portable Space Heater Cost