As an Amazon Associate I earn from qualifying purchases. Affiliate disclosure

Seal Windows: Low-Cost Solutions

Updated October 27, 2026 · 1 min read

Disclosure: This page contains affiliate links. As an Amazon Associate I earn from qualifying purchases, at no extra cost to you. Prices and availability may change, so please check them on Amazon. Learn more.

Leaky windows let heat escape. Simple materials can improve this.

The key points

  • Test tightness by closing a sheet of paper in the window.
  • Choose self-adhesive seals that match the gap width.
  • Keep surfaces clean so the seal sticks.
  • Call a professional for larger defects.

Recommended product

Bottom line

The step you will probably feel first: test tightness by closing a sheet of paper in the window. Start with one point, check the result after a few weeks, then build on your plan.

Related products

Keep reading