Attic ventilation / Guides

How to Vent Roofs - the Methods, Vent Types, Fans
Walls and Roofs

Why Roofs need to be ventilated and how to ventilate a roof properly

...attic space, IRC 2012 limits the net free ventilation reduction from 1:150 to 1:300. US NRCA guidelines For attic ventilation, NRCA recommends providing at least 1 square foot of NFVA for every 150 square feet of attic space (1:150 ventilation ratio) measured at the attic floor or ceiling level. For large-volume at...

Frost in Attics: What causes Attic Ice? How to Fix it?
Roof assemblies - renovation

Why is there frost in my attic? Is ice in roofs a problem & How do I stop it?

...Attic ventilation: Attic ventilation is essential to prevent ice in roofs, be certain that your roof ventilation is able to do its job. Next, roof ventilation - make sure your attic is properly ventilated. Check the attic to make sure that insulation isn't jammed down on the edges and blocking soffit vents . ...

Ice dams on roofs & how to fix them
Roof assemblies - renovation

What causes ice dams and how to fix them

...attic and causes that same melting to occur. Ventilation equipment such as furnaces, duct work and air conditioning are rarely seen in attics anymore, but if you have such equipment up there it is likely contributing to ice damming. In addition to that, you are probably adding 25% to your operational costs by having ...

Top Tips for Getting a House Ready for Winter
Wall assemblies - renovation

Winter preparation for your home - are you ready for the cold?

...attic to see if it is properly vented and if there is enough insulation. Add attic vents if to remove moisture , and additional insulation. This can be done by hauling batts up there yourself, or blowing loose cellulose insulation over the entire surface of an attic , taking care not to block your venting. Below are a ...

The Best 10 Energy Saving Tips for Green Homes - EcoHome
Wall assemblies - renovation

Green home improvements: an energy-saving pyramid scheme that actually works!

...attic insulation is a great way to save money, but be sure to maintain eaves ventilation © Ecohome Attic insulation: The most crucial place to ensure proper insulation for energy saving and money saving is your roof. Older homes may have insufficient insulation and a lot have none. For some homes, blowing a seaml...

Air and vapour barriers

Aerobarrier home and attic air-sealing spray

We cannot overstate the importance of airtightness in homes and attic rooms. A proper air barrier reduces heat loss in winter, overheating in summer, and prevents moisture build up in walls which can lead to mould and rot. We recently had a chance to try out a product that at first sounds too good to be true, but on...

Non-toxic building materials can improve home air quality
Healthy indoor air quality

Maintaining healthy indoor air quality

...attic, be sure they aren't leaking, or more importantly that they aren't simply vented into the attic space, which does happen. Basement mold & mildew prevention That musty smell in basements that is all too familiar is due to either poorly installed insulation , or having no insulation at all. Building below grade...

What is Interstitial Condensation? (And how to stop it!)
Walls and Roofs

What is Interstitial Condensation in Walls or Roofs? (And how to stop it!)

...ventilation and so on. Ventilation can be humidity activated by using a hygrostat, and is best controlled by a careful choice of HRV or ERV . The internal temperature of the building should be kept as even as possible - if the external envelope is well insulated and maximum use made of passive solar heating by design...

Future proof your home by preparing and building to for climate change
Planning and Design

Homes built for Climate Disruptions: A Primer for Home Owners and Buyers

...attic is properly ventilated . Heat can migrate from a hot attic into the top floor of your home. Next, protect your house with overhangs. I’m mystified by these new house designs with no eaves. In addition to protection from rain, an extended roof with large soffits will help with ventilation and keep high summer sun ...

Kitchen and Bathroom design tips

Design ideas for durable kitchens and bathrooms

...attic. Range hood over gas stove © Ecohome Home ventilation and contaminant removal: Ensure proper ventilation of both kitchens and bathrooms to remove moisture , and that means venting to the outside . Stove hoods that are filtered and vented back into your house really don't do much except remove a cert...

Correctly installed Triple pane south facing windows on Ecohome's Demo House
Windows and doors

Installing doors & windows for the best performance in high efficiency homes, LEED & Passive House

...ventilation . You can read more about Air Permeability of homes here , but to put it simply let's quote from the US Department of Energy when they state " the average home has the equivalent of a 2ft square hole in it ." The next time someone in your home complains of feeling a draught or if your utility bill is burnin...