As you can see, humidity is a double-edged sword. Here, in southern Ontario, during spring, summer or fall the control is easy. They override the HRV system by creating negative pressure and thus drying supply air. We and our partners will store and/or access information on your device through the use of cookies and similar technologies, to display personalised ads and content, for ad and content measurement, audience insights and product development. There some models that integrate with your HRV system. Please see the "about" page for links to the official Environment and Climate Change Canada data. We suggest that you simply put up with the inconvenience of occasionally “mopping up” your windows – it’s all part of the responsibilities of home ownership. To enable Verizon Media and our partners to process your personal data select 'I agree', or select 'Manage settings' for more information and to manage your choices. The morning humidity readings are taken at 6:00 am local standard time. This level is considered a level of "great discomfort" and exertion should be avoided. Therefore, it is essential to control it in your new home. However, during the winter, there is one small snag with keeping the house at that level of humidity – moisture on your windows. The builder. What Every Homeowner Should Know About Latest Housing Market Trends, Nine Alternative Wall Systems For Your New Home, Getting the Most Out of an Open Floor Plan, Home Trends Move From Lavish to Practical, 10 Coolest Automation Products for Your Custom Home, Featured Floor-plan of the Month: The Ravenswood. North-western Ontario may have some rain as energy comes in from the Prairies. If, on the other hand, the surrounding air has more moisture than the wood, all the wooden pieces used to construct your home will expand. It is what causes doors to close improperly, floors to squeak, gaps in wood flooring, uplift on roof trusses. Radiant Floor Heating – Hydronic is The Way to Go! From CMHC: Measuring Humidity in Your Home. Therefore, it is essential to control it in your new home. As you can see, humidity is a double-edged sword. I make it a point to mention it in several occasions, especially when discussing the hardwood flooring and its warranty and again at the point of pre-delivery inspection. This natural behaviour of wood is responsible for most of the problems encountered in modern, well sealed houses. Humidex values will be approaching or at 40 Monday. "Citizen Weather Observer Program" Stations. During the winter months in Ontario, as a general rule, it is recommended the relative humidity level be maintained between 25% to 40% along with in-home temperatures between 18°C to 24°C. Between 35% and 60% will be just fine. Here, in southern Ontario, during spring, summer or fall the control is easy. I am really mad! The physics behind these problems is pretty simple. Watch your hygrometer carefully during the winter – maintain around 45% RH. The information presented is combined from multiple Environment and Climate Change Canada data sources and all effort is made to be accurate. Chart and data: Relative Humidity - Hourly data (24 hours) for Toronto for Toronto, Ontario, Canada See the humidex table from Governemnt of Canada for a guide to humidex in compaison to termperature and humidity. As the temperature outside drops to -20 C, the inside pane of glass in a window becomes cold enough to cause condensation to form on the inside pane & start running down the window. Similarly, the colder it gets outside, the worse the problem becomes. Six percent relative humidity!!! Should You Consider Bridging Finance For Your Home Construction? It creates a hot dry climate at floor level, draining the moisture out of the floor structure. It would definitely give you problems breathing. Radiant floor heating does not help. Daily humidity levels will vary daily depending on activities inside the home and the volatile temperatures outside the house. Truss Uplift Crack – RH 16%  at the time the picture was taken. ROI: Can Geothermal Boost a Home’s Value? Also: Is the Humidity level still low in the home? Don't make life or death decisions based on the information you find here. Building or Renovating – What Makes More Sense? Get an air humidifier. However, if you find something missing or incorrect please send your feedback. Chance of pop-up showers in southern Ontario as well as the heat and humidity rise. You can change your choices at any time by visiting Your Privacy Controls. The floor boards are splitting and the drywall is cracking. A better look at impacts and timing, below. The tables give the month's daily average relative humidity. In the recent month, I received 3 phone calls from my last year’s clients about their homes. Find out more about how we use your information in our Privacy Policy and Cookie Policy. Open windows will supply all the fresh air required. During the heating season, turn the dial on the HRV to the lowest setting available. Information about your device and internet connection, including your IP address, Browsing and search activity while using Verizon Media websites and apps. If, the adjoining air, has less moisture than the wood, the wood will dry out to balance to the air. :-) Yahoo is part of Verizon Media. It also helps the mould to grow. Sunday, August 9th 2020, 7:00 am - Ontario's heat and humidity are on the rise. I did not believe it. Do not turn on the fan in bathrooms while showering. After taking a bath leave bathtub water in the tub till it gets cold. It also causes kitchen cabinet doors to crack, casings and baseboards to shrink and come away from the walls, and miter joints to split. I did not even know that it could go so low. Embed the chart in your web page: . Do not constantly run bathroom and kitchens fans. Air is relatively moist, and as long as you keep your windows closed, your heat recovery ventilator should do the job. We're back at it Wednesday, high humidity with a new inbound system bringing more storm risk to southern Ontario. Is the Humidity level still low in the home? The historical weather data, forecast and current conditions graphics are courtesy of Environment and Climate Change Canada. Me! Do you know who is going to carry the blame for cracked walls and split floors? Humidity is usually taken care of by seriously cold temperatures, because they just make the water particles in the air settle as ice crystals. If you notice that the air is on dry side, cook without turning on the fan. That’s who. Putting The “Con” In Construction Projects. Why then, when we went to inspect the relative humidity from our callbacks this month, the highest number we found in those homes was 18%?. Beyond that, the heat and humidity build back in once again for the province. On the other end of the scale, we all know that the excess humidity in the house causes hardwood to swell and cup. Helping You Understand Mould During Home Building. Air is relatively moist, and as long as you keep your windows closed, your heat recovery ventilator should do the job. The afternoon humidity is for 3:00 pm local standard time. As it dries, it shrinks. The heat continues to rise Sunday and into Monday for Ontario. I usually stress the numbers: “Please keep the humidity in your house between 35% and 60%!!!”. Chance of storms for the north-west and pop-up showers for southern areas of the province. Details and timing, below. Wood is a natural material that responds to fluctuations in its environmental moisture and temperature. Keep indoor plants – they will improve air quality, especially during the winter. The normal humidity levels in January at Canada's largest cities are listed below. So, to avoid similar problems in the future, please take care of the relative humidity in your new home.