Sunroom Windows for your
New or Existing Porch

PROCESS  |  COLOR  |  SIZING  |  APPLICATION  |  INSTALLATION 

Porch Window Systems for the DIY'er

Building new or remodeling your existing porch? The Sunspace process couldn't be easier. Here are five basic steps for creating the porch of your dreams with Sunspace Porch Windows. 

Step 1 – Contact Us

Request a Quote by gathering rough measurements from your existing porch, or If you have blueprints or drawings of the new porch design, send them our way to get the conversation rolling on options and pricing packages.

Step 2 – Measure for Your Windows

We want to make sure your windows are perfect. We've put together instructions on how to measure for your new windows, along with helpful tips found below. Please know, we can only ship the single window units that are up to 54" wide and 108" tall.

How to Measure Your Windows

• Measure in three locations vertically and three locations horizontally as shown in the image.
• Take the smallest of the three measurements you took vertically and the smallest of the three measurements you took horizontally.
• These two measurements will be your opening size. 
• Be sure to measure all of your window openings.

Step 3 – Selections

At this point, we can finalize product selections, colors, and other options before securing time on our production schedule.

Step 4 – Order Placement

Next, we will place the order for your custom-made products. You can expect your windows to arrive within 8-12 weeks from the order date.

Step 5 – Delivery & Self-Installation

The final step is installation, please watch this helpful video to get you started and review additional installation details below! 

Frame Colors and Vinyl Tint Options

Sunspace Porch Windows are available in five frame colors and four vinyl tint options to match your style. 

Read about Sunspace Porch Windows versus the competition >>

Window Sizing, Framing, & Trim Details

Sunspace Porch Windows have a 1” flange around the perimeter so you need to have a flat surface on the exterior that is 1” thick or greater. Double-check on the top and bottom of the framing to make sure there is something to catch the flanges and is flush with the vertical posts. If you are placing windows next to each other, there needs to be at least 2” of framing in between them. We do offer mulled units of double and triple wide windows up to 12’ wide that do not require framing inside that opening, but these are not available for shipping. We can only ship the single window units that are up to 54" wide and 108" tall.

Single Window Unit

Height: 42" to 108"
Width: 12" to 54"

Typical Application

Windows can be installed between posts with no interior or exterior trim. We measure these as tightly as possible to minimize gaps. Typical deduction is 1/4” off the rough opening resulting in a 1/8” gap around all 4 sides that can be sealed with the caulking that comes with the windows. In this case, we would install the windows with our color matched screws for a finished exterior look. 

Windows have a 2” jamb depth and 1” of frame visible inside.

Other Applications

Option 1: Windows can be installed onto rough framing or sheathing and then have interior trim applied after window install. Exterior trim can be placed over top of the window flanges. In this case we will install windows with flat head screws. 

Option 2: Windows can be installed on top of exterior trim boards and then have interior trim used.

Option 3: Windows in-set into openings for an exterior railing to be used.

Download Application Options >> 

Sunspace Porch Window Installation

Sunspace porch windows have a 1” flange and are designed to be fastened through this flange into framing structure. Silicone caulking and color matched screws are provided.

1. Remove packaging, pre-drill holes in line with window sashes, apply silicone to back of window flanges.
2. Center and square up window frame in opening. Fasten a screw into each corner.
3. Use shims if needed to maintain the same width in the middle of the window as in the top and bottom. An “hourglass” shape will result in window panels that are too loose.
4. Fasten the sides with screws at each meeting rail (see Outside view diagram below).
5. Fasten the header and sill with one screw in the middle.
6. If needed, tighten the screen by removing the spline on one vertical side, pull the screen tight, and insert the spline. Trim off excess screen being careful not to slice inside of the splines.
7. Operate the window panels and adjust frames if needed. 
8. If window panels are too loose and do not stay in place, additional tension can be gained by shimming frames closer together.

Download Installation Instructions >>