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Windows Sweat and Condensation - What Should You Do?

Discovering water droplets forming on your window panes isn’t uncommon, especially for Canadian enduring such harsh winter climates. The extreme low temperatures cool the glass, which in turn cools the air that comes into contact with it, creating condensation. The fogged glass caused by these water droplets looks unappealing, and can induce the formation of harmful moulds. Take care of sweating windows as soon as possible, to avoid an uncomfortable, unhealthy home.

Ventilation is Key

Poor ventilation in your home can make condensation worse, and the formation of mould escalate quicker. Opening your windows from time to time can help move stale air out, and bring fresh air into your home. However, in doing this you waste heat and money. If your windows have gaps or leaks, chances are they are providing a source of ventilation by allowing the free passage of air from outside to inside.It is wise to seal these leaks, and seek ventilation elsewhere, in order to retain heat in your home and save you money.

Heat recovery ventilation systems (HRVs) are a great condensation-combating solution in cold Canadian climates. They reduce moisture build up by transferring stale air out of your house, and bringing fresh air into your house. Furthermore, HRV stake the heat from the stale, indoor air, and transfers it to the fresh, outdoor air. This helps in regulating the temperatures in your home, keeping it warm and comfortable in the wintertime.

Dealing With Mould

Water droplets on your windows will fester along the edges, and could lead to the formation of harmful moulds. This is not only an unsightly mess, but also a prominent health risk for your family. Mould should be cleaned as soon as it is discovered, and measures should be taken to prevent its formation in the future. To avoid future outbreaks, take care of your mould problem with a fungicide, and keep your windows dry.

Dry windows and increased ventilation will keep window-sweat under control,and ensure a healthy home for you and your family.


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Google Rating
Sanjay Tamang
3 months ago
Love our new windows and doors. We had all our windows replaced on the main floor, side door and front door, as well as the storm doors. The installation team was great. They removed the existing awning and were really great at cleaning up after the work. There were a couple of issues after the install, but the after sales service team of Alex and Walter were able to resolve it promptly. Great advice from Walter about keeping the humidity inside the house to maintain the windows, and also how to operate them properly. And thanks very much Alex and team for buying the doorbell and installing it for us, as well as fixing the bottom part of the door frames to cover holes on the flooring. Appreciate all your hard work and for going the extra mile. Will definitely recommend your company to friends, neighbors and family.
Thomas Carlyle
a month ago
NorthShield did an excellent job with our house. They were the lowest price our of 4 companies I contacted for quotes. The windows look beautiful, and the molding is very well done. The installation was very quick, they replaced all of the windows in our house in about 4 hours. They cleaned up everything completely afterwards inside and outside, you can't even tell they were here! Very professional, very high quality installation, materials and work. I would highkly recommend them.
Courtney Schappert
3 months ago
Likely a good company for windows, installers seemed competent. However for doors they seemed to have much less experience. My salesman left the company midway through the process and I wasn't informed, and turns out some miscommunication between him and I led to a product I didn't want. The door is nice, just not what I had thought I ordered, and it took about 4 months to get, so I accepted it. The paint also chipped after they left, which leaves a bad feeling (even though that's more of a manufacturer issue than NorthShield issue). I'm not saying these guys are going to be bad for you, but I'm not thrilled with my result. REPLY December 5, 2018: I had called about the paint chip and wrong door options already at the time and was told there was no recourse for me. The paint chip was there when I came home from work after the door was installed, but you provided a picture the installers took before the paint was chipped, so at that time I was told there was no recourse. The wrong options I was told was due to a salesman who took my order having left the company, and there was no paperwork showing my chosen option (no door handle hole to be cut). I will call again tomorrow and update this with the results of that conversation.
Carl To
5 months ago
Alex and the team at north shield were amazing. Great customer service, along with a great team of installers. North shield replaced my 2 front living room windows in 1 day. They even took away my awning! Highly recommended
4 months ago
Very professional workers that despite finding, no vapor barrier and wood rot on our deck, fixed it right and continued to install our very beautiful door and side light without complaint. I would highly recommend Northshield to any friends, neighbors or anyone else. I am a very Happy, Happy Gal with my beautiful new door!
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