Roof 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

...ventilation. How to vent a roof properly Do you need to ventilate a roof in warm climates? Along with preventing frost build up in a cold climate, roof ventilation also prevents roofs from overheating in the summer, which prevents premature aging . Unventilated attics or insufficiently vented attics in warm c...

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

What causes ice dams and how to fix them

...roofs, letting water penetrate and cause damage to the interior of walls and roofs. When snow melts on a roof it runs down until it meets the unheated bottom edge of a roof and then freezes. This chunk of ice is called an ice dam, and it can cause water to backup beneath shingles and Ice dams cause damage to walls and ...

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?

...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 . Proper...

Metal roof with solar panels
Roof coverings

How to choose roofing materials

...roofs- intensive and extensive: Green roof © Ecohome An intensive green roof, also known as a ‘rooftop garden’ refers to planting areas that have a depth of 6 inches and up. Deeper soil supports a greater variety of plants such as vegetables, shrubs and even small trees. Extensive roofs are designed primarily...

Lockeport Beach House
Real estate

Lockeport Beach House wins Canadian Green Building award

...roof provides shade in the summer, and allows the low winter sun to warm the concrete floors in the cold season. Other complementary strategies include a continuously insulated building envelope, with high performance low-e double-glazing and heat recovery ventilation to minimize heat losses; and Energy Star appliances...

The LEED Platinum infill house in Toronto
Real estate

Farnham Avenue House

...ventilation and natural daylight shafts, dynamic cross ventilation, passive solar shading, and super insulation. Other features have been around for a long time, but are not that common on a confined city lot, such as geothermal heating and cooling. There are major elements that are reclaimed such as the exterior bri...

Beautiful LEED home in Mulmur, Ontario.
LEED Homes

A beautiful lakeside LEED Platinum home

...roof, heat-mirror triple glazing, solar shading, passive ventilation and daylighting, and a geothermal system are just some of the features of this LEED Gold-targeted project. LEED home in Mulmur, Ontario.© Shai Gil Photography LEED home in Mulmur, Ontario. © Shai Gil Photography...

How to Choose between an HRV and ERV system
HRV and ERV

Choosing between an HRV and an ERV

...Ventilation) and an ERV (Energy Recovery Ventilation.) Both HRVs and ERVs are somewhat new to mainstream home construction, and can often be confused. In an effort to clear that up, we will first explore why ventilation is so crucial, then explain the options and their best applications. Up until the last few decad...

7 Principles of a super abundant, solar, year round greenhouse
Greenhouses and Sunrooms / Solariums

7 key principles for an abundant greenhouse

...Ventilation Greenhouses need ventilation year-round, even in the winter. You can provide this energy-efficiently by using well-placed vents: intake vents lower and exhaust vents higher to take advantage of the fact that warmer air will rise. See more on ventilation strategies on our blog here . We recommend insta...

Greenhouse Construction for Cold Climates
Greenhouses and Sunrooms / Solariums

How to build a greenhouse in a cold climate

...roof. The north roof is metal. Rigid insulation was used below the floor and on the north wall. Glazing is a mix of polyethene, patio doors and reclaimed windows. For Greenhouse's in Kit form online with delivery, or Greenhouse construction materials, see here Ventilation: At this moment, two small fans p...

PSI

Case Study: Kenogami House, Saguenay, Quebec

...roof and fascia, electrically controlled exterior shutters, stone and red spruce siding. Heat recovered ventilation is provided by a Zhender air exchanger rated at 93% efficiency and along with interior appliances is powered by a 5.4 watt photovoltaic solar panel system. The ceiling is insulated to R151; walls have...