Model 400 All Season Thermal Sunrooms (4 Season Sunrooms)


Building on the three season sunroom, the Model 400 Thermal Sunroom by Sunspace takes you to a new level in comfort. As the name suggests, this is a 4 season sunroom. By offering 3″ extruded insulated aluminum pillars and double glazed windows, this Thermal Sunroom allows you to extend your seasons enjoyment. With a Sunspace 4 Season Thermal Sunroom you will adding a new high quality, customized and comfortable living space to your home or cottage. Every region of the country has their fair share of good and bad weather. Don’t let nature lock you inside, rather enjoy the seasons from the comfort of your new Sunspace 4 Season Sunroom.

– Double glazed high efficiency, Low E-Argon gas Glass Windows and extrusions with commercial grade thermal breaks combine with the Sunspace Thermal Roof System to provide strong support for wind and snow load while reducing condensation and heat loss. Eliminate costly foundation work with Therma-Deck! The finished surface is perfect for carpet, tile or almost any type of flooring while providing 25% better insulated rating than conventional flooring construction.

– Take your comfort through the natural ups and downs of North American seasonal weather by adding a new, high quality, customized and comfortable living space to your home or cottage. Don’t let nature keep you inside, enjoy watching the seasons change from the comfort of your new Sunspace by Relaxed Living Sunrooms!

  • Choose from 3″, 4″ or 6″ thicknesses
  • Roof projection, snow load & R-Value are always considered in the customization of your roof system
  • All systems constructed of high density foam core
  • Laminated with aluminum skins on both sides
  • OSB exterior option to accomodate standard shingles
  • Integrated gutter system
  • Worry Free heavy duty extruded aluminum gutters and fascia
  • Optional prep for wood paneling

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