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WINDOW-TO-PATIO DOOR CONVERSION: THE CHALLENGE IN WISCONSIN HOMES

Converting two double-hung windows into a single patio door is not a standard remodel. This project required careful planning, precise masonry work, and professional installation to avoid compromising the home’s structure. Common issues like brick removal, framing modification, and weatherproof sealing made this job far more complex than a standard window replacement.

OUR PROVEN PATIO DOOR INSTALLATION PROCESS

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Window Removal

Our team began by carefully removing the existing windows:

  • Interior trim and casing were removed to expose the frame.
  • Caulk and nails securing the windows were cut.
  • Each sash and frame was detached without damaging the surrounding brick or drywall.
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Brickwork Preparation

To create the proper rough opening for the new patio door:

  • The exterior brick was scored along precise cut lines.
  • An angle grinder with a masonry blade was used to create smooth edges.
  • Brick was carefully removed and cleaned for a professional finish.
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Framing Modifications

Structural adjustments were made to ensure the opening could support the new door:

  • Old window framing was removed.
  • A new rough opening was framed with a header, king studs, and trimmer studs for stability.
  • The opening was leveled, squared, and reinforced to handle the weight of the patio door.
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Patio Door Installation

With the space prepared, the new patio door was set in place:

  • Flashing and sill tape were applied for moisture protection.
  • The door was dry-fit, shimmed, and secured to manufacturer specifications.
  • A final check confirmed perfect alignment, level, and square.
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Insulation & Sealing

To maximize energy efficiency:

  • Low-expansion spray foam was applied around the frame.
  • Gaps were sealed with caulk inside and out.
  • Flashing and a drip cap were installed to divert rainwater away.
step 6 icon

Interior Finishing

Finally, the interior was completed with:

  • New trim and casing.
  • Clean finishing for a polished look.

OUR PROVEN PATIO DOOR INSTALLATION PROCESS

step 1 icon

Window Removal

Our team began by carefully removing the existing windows:

  • Interior trim and casing were removed to expose the frame.
  • Caulk and nails securing the windows were cut.
  • Each sash and frame was detached without damaging the surrounding brick or drywall.
step 2 icon

Brickwork Preparation

To create the proper rough opening for the new patio door:

  • The exterior brick was scored along precise cut lines.
  • An angle grinder with a masonry blade was used to create smooth edges.
  • Brick was carefully removed and cleaned for a professional finish.
step 3 icon

Framing Modifications

Structural adjustments were made to ensure the opening could support the new door:

  • Old window framing was removed.
  • A new rough opening was framed with a header, king studs, and trimmer studs for stability.
  • The opening was leveled, squared, and reinforced to handle the weight of the patio door.
step 4 icon

Patio Door Installation

With the space prepared, the new patio door was set in place:

  • Flashing and sill tape were applied for moisture protection.
  • The door was dry-fit, shimmed, and secured to manufacturer specifications.
  • A final check confirmed perfect alignment, level, and square.
step 5 icon

Insulation & Sealing

To maximize energy efficiency:

  • Low-expansion spray foam was applied around the frame.
  • Gaps were sealed with caulk inside and out.
  • Flashing and a drip cap were installed to divert rainwater away.
step 6 icon

Interior Finishing

Finally, the interior was completed with:

  • New trim and casing.
  • Clean finishing for a polished look.

Results & Client Review

The Hendersons were thrilled with the transformation

Why This Matters for Wisconsin Homes

Homes in Johnson Creek and across Jefferson County face unique weather challenges from heavy rainfall to snowy winters and clay-based soils that can shift with moisture changes. A well-sealed patio door is critical to:

  • Prevent drafts and water infiltration.
  • Protect structural framing from rot and soil-related shifting.
  • Improve indoor comfort year-round.

By combining precise installation with energy-efficient materials, SiDEX ensures that Wisconsin homeowners enjoy doors and windows built to handle our region’s toughest conditions.

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Frequently Asked Questions (FAQ)

Why replace windows with a patio door?
It creates easier access to outdoor living spaces, increases natural light, and can add significant resale value to your home.
Will a patio door be energy-efficient in Wisconsin weather?
Yes. Modern patio doors are insulated, weather-sealed, and designed to prevent drafts even in extreme cold or humid summer heat.
How long does a conversion like this take?
Most window-to-door conversions take 1–2 days, depending on brickwork, framing needs, and finishing details.
What maintenance is required for patio doors?
Minimal. Occasional cleaning, lubricating hinges or tracks, and checking seals annually is usually all that’s needed.
Can this type of remodel affect my home’s foundation?
When professionally installed, no. In fact, proper sealing and flashing help protect against moisture intrusion that could otherwise damage framing or contribute to foundation issues.
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PATIO DOOR REPLACEMENT IN WISCONSIN: LASTING COMFORT AND VALUE

The Henderson family’s project shows how the right remodeling choice can completely change the comfort and value of a Wisconsin home.

By converting old windows into a modern patio door, they gained energy efficiency, style, and functionality built to last through Johnson Creek’s toughest weather.

Ready to upgrade your home? Contact SiDEX today for a free consultation on patio door installation, window replacement, or full exterior remodeling in Southeast Wisconsin.

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READY TO UPGRADE YOUR BATHROOM?

Contact SiDEX today for a free consultation on shower replacement, tub-to-shower conversions, or full bathroom remodeling in Southeast Wisconsin.