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How to Winterize Your Windows and Doors


Winter can be a beautiful and cozy season, but it also brings cold temperatures and energy bills that tend to soar. One of the primary culprits for heat loss and chilly drafts in your home is often poorly sealed or insulated windows and doors. Winterizing your windows and doors is an essential step in keeping your home warm and energy-efficient during the cold months. In this blog, we’ll explore effective strategies to winterize your windows and doors and create a snug and comfortable living space.

Check for Drafts

Before you begin any winterization efforts, it’s crucial to identify areas where drafts are entering your home. On a windy day, carefully inspect your windows and doors for any noticeable drafts. You can use a lit candle or incense stick to detect air leaks – if the flame flickers or the smoke shifts, you’ve found a draft.

Caulk and Weatherstripping

Caulking and weatherstripping are your best friends when it comes to sealing gaps and cracks around your windows and doors. Apply caulk to seal any gaps or cracks in the window frames, and install weatherstripping around the door frames. This will prevent cold air from infiltrating your home and warm air from escaping.

Insulate with Window Film

Window film is an effective way to add an extra layer of insulation to your windows. It’s easy to apply and can significantly reduce heat loss. Window film is available in various types, such as shrink film or static-cling film, which adhere to the glass and create an insulating barrier. They are practically invisible and won’t obstruct your view.

Install Draft Stoppers

Draft stoppers, also known as door snakes, can be placed along the bottom of exterior doors. These weighted fabric strips or tubes prevent cold air from sneaking in beneath the door. They are a simple and cost-effective solution to keep your home cozy.

Upgrade to Insulated Curtains

Thick, insulated curtains can act as a barrier against heat loss through your windows. When drawn closed at night, they can keep the cold air at bay and help retain warmth. Look for curtains with thermal or blackout properties for maximum insulation.

Utilize Window Insulation Kits

Window insulation kits consist of a plastic film that you apply to the interior of your window frame, creating an additional layer of insulation. These kits are easy to install and can be removed in the spring. They’re an affordable way to reduce heat loss and prevent drafts.

Maintain Your Windows and Doors

Regular maintenance is crucial for the longevity and efficiency of your windows and doors. Ensure that the weatherstripping, seals, and hardware are in good condition. Repair or replace any damaged components promptly to maintain a tight seal.

Consider Window and Door Replacement

If your windows and doors are old and no longer provide adequate insulation, it may be time to consider replacing them with more energy-efficient options. Modern windows and doors come with advanced features like double glazing and low-E coatings that can significantly reduce heat loss and improve energy efficiency.


Winterizing your windows and doors is an investment that pays off in terms of comfort, energy savings, and lower utility bills. By following these steps, you can create a warmer and more energy-efficient home during the winter months. Whether you choose simple solutions like draft stoppers and curtains or opt for more substantial upgrades, the result will be a cozy and inviting living space that shields you from the chill of winter. At MW Construction, we’re your dedicated Door and Window Contractors. We specialize in winterizing your windows and doors, ensuring a cozy and energy-efficient home during the colder months. Whether you need installations or upgrades to boost insulation and security, our expert team is here for you.

Ready to get started? Contact us for a free estimate and let us help you create a warm and secure winter haven.

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