Welcome to our practical guide on window installation and maintenance! In this article, we’ll walk you through the essential steps for installing windows to ensure long-term durability and performance, and share expert tips on maintaining them to keep your home looking great year-round.

Installing Windows: Step-by-Step for Success 

Proper window installation is key to energy efficiency, weather resistance, and smooth operation. Whether you're replacing old windows or installing new ones, following best practices can make all the difference.

Preparation: Start with a Solid Foundation

Before installation begins, preparation is crucial:

• Measure Precisely: Measure the width and height of the window opening in three places—top, middle, and bottom—and use the smallest measurement for accuracy.
• Inspect the Opening: Check for signs of rot, mold, or structural damage. Repair any issues before proceeding.

Removal: Out with the Old

• Carefully remove interior stops and sashes.
• Cut through any caulk or paint sealing the window.
• Gently pry out the old window, avoiding damage to the surrounding wall or trim.

Installation: Fit, Flash, and Fasten

Dry Fit

• Place the new window in the opening to ensure a proper fit before sealing.

Flashing and Waterproofing

• Install a sill pan or slope the sill to direct water away.
• Apply flashing tape to the sill, sides, and top of the rough opening.
• Use flexible flashing for corners and integrate with the weather-resistant barrier (WRB).

Setting the Window

• Apply caulk to the back of the nailing flange or around the frame.
• Insert the window and use shims to level and square it.
• Secure the window with screws through the flange or frame.

Sealing and Insulating

• Fill gaps with low-expansion spray foam or fiberglass insulation—avoid overfilling to prevent warping.
• Apply sealant around the exterior perimeter to block air and water infiltration.

Finishing Touches

• Reinstall or replace interior trim and stops.
• Paint or stain as needed.
• Clean the window and check for smooth operation.

Pro Tips for Installation

• Follow the manufacturer’s instructions closely.
• Ensure compliance with local building codes.
• Consider hiring a professional for upper-story or complex installations.
• Regular inspections help catch issues early and extend window life.

Maintaining Windows: Keep Them Looking and Working Like New

Routine maintenance not only preserves your windows’ appearance but also enhances their performance and longevity.

Regular Cleaning: Clear Views, Inside and Out

• Glass: Clean both sides with a mild soap solution or vinegar-based cleaner and a microfiber cloth for a streak-free finish.
• Frames: Wipe down vinyl, wood, or aluminum frames with a soft cloth and non-abrasive cleaner.
• Tracks & Sashes: Remove dirt and debris using a vacuum or brush, then clean with soapy water.
• Screens: Remove and gently scrub with soapy water. Rinse and dry before reinstalling.

Routine Inspections: Spot Issues Early

• Visual Checks: Look for cracks, warping, or fogging between panes.
• Seals & Caulking: Inspect and replace deteriorated weather stripping or caulking.
• Hardware: Test locks, handles, and hinges. Lubricate moving parts with a silicone-based lubricant.

Preventive Maintenance: Protect Your Investment

• Clear Weep Holes: Ensure drainage holes at the bottom of the frame are unobstructed.
• Repaint or Reseal: Especially for wood windows, to guard against moisture and UV damage.
• Avoid Condensation: Use dehumidifiers or improve ventilation to reduce interior moisture.

Seasonal Care: Stay Ahead of the Weather

• Spring & Fall: Deep clean and inspect for damage after seasonal extremes (Fall Maintenance Checklist).   
• Winter Prep: Check seals and weather stripping to maintain energy efficiency and prevent drafts.

Professional Support: Expert Eyes Make a Difference

Schedule an annual inspection by a window professional to catch potential issues early and ensure optimal performance.

Helpful Resources

Window Installation Instructions – JELD-WEN
Window Cleaning Tips – JELD-WEN Blog

By following these installation and maintenance tips, you’ll enjoy beautiful, efficient, and long-lasting windows that enhance your home’s comfort and value. Whether you're a DIY enthusiast or prefer professional help, a little care goes a long way.