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How to Replace a Patio Door (DIY)

A new, efficient patio door stops drafts, saves energy and eliminates leaks. Learn how to do your own sliding glass door replacement.

Introduction

If you've been putting up with a drafty patio door that sticks, fogs up or leaks during a heavy rain, it's time to consider a new, energy-efficient replacement. While a high-quality door isn't cheap, it'll cut down on drafts, require almost no maintenance, glide smoothly and latch securely. Best of all, you'll save $300-plus if you install a sliding glass door replacement yourself.

Tools Required

Materials Required

  • Flexible flashing
  • New sliding door
  • PVC cement
  • PVC sill pan
  • Silicone caulk
  • Wood shims

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Barrett Giampaolo

Update: 2024-02-23