They could be beautiful, historic or even high-quality, but if your windows are letting in air, you’ve got a problem. If you’re facing this issue at your home or business, you may be wondering how to stop drafty windows. Do you have to replace them outright? Are there other effective ways to stop drafty windows? Fortunately, there’s good news. Rather than paying for all new windows to be installed at your location, you have several alternatives for drafty window repair.
Why Windows Get Drafty

Old windows weather over time and even good windows will need some maintenance over the long haul. Glazing putty can fall away, cracks can develop, caulking can degrade, and some types of windows can shrink with age. If your windows are letting in cold air or not working as well as they could, your energy bill is probably suffering for it. That’s why it’s worthwhile to look for ways to fix drafty windows and extend their usefulness.
In fact, there are several ways to breathe new life into your existing windows without shelling out big money for replacements. If you’re looking for the best solutions to fix drafty windows and improve efficiency, here are six simple methods to consider:
Repair, replace or add new weatherstripping
Get a window draft stopper
Cover cracks with nail polish
Wrap the windows with film
Reglaze the window panes
Use interior storm windows or inserts
By prioritizing these energy saving methods, you could save an average of 20% on your energy bills, which will really add up over time!

Repair, replace or add new weatherstripping
Another way to prevent a draft from windows is with plastic weatherstripping. Install it along the side sashes and instantly improve the window’s insulation from outside temperatures.

Get a window draft stopper
A draft stopper or draft snake is one of the most simple ways to block cold air from coming in through your window. Draft snakes are tubes or sleeves filled with dense materials that you place on the bottom edge of your window. They are not permanent and can be removed (or sometimes knocked down) very easily.
Cover cracks with nail polish
Very small cracks in your window can be painted with clear nail polish. Don’t try this with any windows that have coating as this can harm window coating.
Wrap the windows with film
During seasons when you know you won’t be opening your windows, you may want to apply insulating film. Held by double-sided tape and easy to mount, shrink film can create an airtight seal over your existing windows. This non-permanent fix is a great way to stop window drafts, but the adhesive often damages surfaces during removal in the spring.

Reglaze the window panes
The glazing putty that seals window panes into the frame is prone to degradation over time. Removing all the existing putty and replacing it with fresh material can improve your windows’ insulation for a few dollars and a little bit of time and effort.
Use interior storm windows or inserts
The beauty of interior storm windows is that they fit directly into your existing window frames, require minimal effort to install and significantly improve insulation. While interior storm windows give a tight seal against window drafts, they don’t change the look of your windows. You preserve their original beauty or historic charm with zero risk of damage to the frame. And they cost less than a full window replacement. They also can improve energy efficiency.

Benefits of Indow Insulated Windows
Indow inserts are a more permanent solution to insulating drafty windows without being as high-cost as replacement windows. They are a relatively easy fix — after measuring your windows, you simply press the custom-fit inserts into place inside your window frames. They provide a major improvement in efficiency, increase insulation and reduce drafts, and can also add a layer of soundproofing.
They are designed to be easy and quick to install and remove. They practically disappear once in your window. Wherever you live and whatever the size of your windows, Indow storm window inserts are a mix of all the other solutions to fixing drafty windows combined — except for repairing your windows. Indow inserts and drafty window repair go hand in hand.
To learn more about making your windows draft free with Indow window inserts, check out our drafts solutions page or fill out our form to speak with a representative.
For the past few days, my room has been very cold at night. I think the window might be the problem. I’ll have to hire a professional to help me since you mention that repairing or replacing the weatherstripping might help.
It just snowed for the first time where I live and I really didn’t expect my apartment to get as cold as it did. When walking around, it was definitely cooler by the windows. I’m going to try to fix them but if not my buddy is an HVAC contractor.
I appreciate the suggestions made in this article for how to fix drafty windows. I think that using interior storm windows or inserts is a great idea, and I like that Indow window inserts are designed to be easy and quick to install and remove.
I agree that repairing your windows is a good way to improve energy efficiency, and I believe that the Indow inserts are a good solution for drafty windows.
Thanks for the tips!
Thank you for the positive feedback on the solution we offer!
My condo has Chain Winder shortline Awning Windows.I am shivering with cold because there is cold draft coming from my bedroom window. It turns out the window’s elestic rubber like seal (gasket) is ruined thansk to the window washers using pressure washers. Since this is a shortline awning windoe that pushes outwad and upward, how does one go about replacing this sealant?
Hi Marie, You may be able to contact a window repair shop. This is a little outside of our expertise though!
My condo has Chain Winder shortline Awning Windows.I am shivering with cold because there is cold draft coming from my bedroom window. It turns out the window’s elestic rubber-like seal (gasket) is ruined thanks to the window washer using pressure washers. Since this is a shortline awning window with crank, that pushes outward and upward, how does one go about replacing this sealant? Thank you
Hi Marie, and thank you for your question. Are you talking about the gasket between two pains of glass in a double-pane window?
If our inserts could fit on the interior, we might solve your window comfort challenge.