Seal Windows Fast When Sudden Cold Air Enters

Cost Savings

Checklist Tasks

• Run a damp hand along all window edges to locate cold air entering.
• Shine a flashlight from outside at night; check inside for visible light leaks.
• Inspect window corners and sash joints for cracks or widening gaps.
• Press on weatherstripping to see if it is brittle or shrunken.
• Check exterior caulking for gaps or crumbling after freeze-thaw cycles.
• Test that locks and latches fully close to eliminate hidden gaps.
• Look for condensation or frost on interior glass, indicating failed seals.
• Trace the window perimeter with tissue paper and note any fluttering.
• Clear window tracks of debris or ice to ensure complete closure.
• Check wooden frames for warping or swelling altering the seal.
• Apply insulating film as a temporary draft barrier until repairs are made.
• Document each window’s issues with photos and notes for repair priority.