Convert your existing space to a year round Haven!

If you have a covered front or back porch why not have Seaway design a Custom Enclosure and take advantage of your existing foundation and roof!  The possibilities are limitless with either a 4-Season or 3-Season Enclosure system.  Windows, Doors, Knee-walls, or Transoms your Vacation Paradise or Extra room is sitting right on your foundation.

Why Seaway Enclosure?

Custom size any window or door combination to enclose your porch to increase the square footage of your living space.

  • Fully wired for electric for year-round functionality
  • Seaway’s exclusive thermally improved extrusions with an external element barrier and foam filled insulation for maximized energy efficiency
  • GrandView sunrooms utilize Seaway’s InsulGlaze 400 high performance glass package for superior energy efficiency
  • Unique contoured exterior design to add traditional styling to your sunroom
  • GrandView sunrooms offer a maximized glass viewing area
  • Rest assured that you will have a safe, sound structure for years to come
  • Guaranteed for life


Our transferable, lifetime limited warranty is our added seal of quality. It’s complete coverage backed by years of experience and a customer service staff that supports you from our office, in the showroom, and in your home. 

Click here to view and download our warranty.

“Seaway Window gets my Five (5) Star Rating. High quality work, fair prices and so glad the owners of Seaway have invested in the City of Erie and Erie County. Thanks Seaway for making greater Erie more beautiful your quality windows.”

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“We have used Seaway on four projects over a period of 12 years. Let our ongoing use of this supplier be a testament to our satisfaction with the end result.”

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2240 E 33rd Street
Erie, PA 16510
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