This Easy Window Trick Keeps Heat Inside All Winter, by Robert Construction on YouTube. 12 min 4 s.
- Video length
- 12 min 4 s
- Time to do it
- 2 hours
- Difficulty
- Easy
- Steps
- 9
What you need
Steps
On a cold, windy day, run your hand slowly around the window frame, sash edges and sill. Feel for moving air to find the worst drafts first.
Check the glass itself. Single-pane windows lose heat fastest, so they benefit most from film or a second layer.
Clean and dry the frame, then apply double-sided tape around the glass edge. Press window film tight and smooth out wrinkles.
Shrink the film with a hair dryer on low, working from the centre outward until it is tight and clear.
Stick foam or V-strip weatherstripping into the frame where the sash closes. Fill the gap so the window still latches.
Seal small cracks and gaps around the frame with caulk. Let it cure fully before closing the window.
Hang thermal curtains close to the window and let them reach the floor or sill. Open them on sunny days to let warmth in.
Place a draft stopper or rolled towel along the bottom gap of doors and sliding windows.
Run through the checklist: film tight, seals closed, gaps caulked, curtains hung and no trapped damp.
Tips and common mistakes
Never seal a window completely tight in a damp room; leave a little ventilation so moisture can escape.
Wipe condensation off the glass daily and fix leaks before adding film, or mould can grow behind it.
Weatherstripping must not stop the window from latching, so test the fit before pressing it down.
Film works best on a clean, dry frame; dust or grease makes the tape peel off.
Questions
Will window film stop condensation?
It can reduce it by keeping the inner glass warmer, but it will not fix damp air. Ventilate the room and wipe up moisture regularly.
Can I use these fixes in a rented home?
Yes. Film, weatherstripping and draft stoppers are removable and do not damage the frame if you clean up the tape afterwards.
Do I need to replace single-pane windows?
Not always. Cheap film, seals and thermal curtains can cut drafts and make the room feel warmer first.
This guide was drafted from the video's details and general task knowledge. It has not been checked against the full video. Check the video and relevant product instructions before following a procedure. Report a correction.
