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Ventgrid Provides Ventilation and Airspace for Air and Water to Escape

Ventgrid acts as a thermal barrier between the floor finish and the concrete slab by creating a gap between the two, which eliminates conductive heat transfer. Similarly, when Ventgrid12™ is installed behind the wall cladding, it enhances ventilation and keeps the sheathing free from moisture damage. 


  • This Is the Reason Your House Has a Cold Basement Floor
    Answer: Most houses built with basements in the last few years will have an insulated floor slab, which helps a lot in creating a warmer feeling floor. However, if your home was built before 2005, there's a good chance the slab is resting on gravel, which is in direct contact with the soil having a constant temperature of 50°F (10℃). As a result, the floor will feel "cold" (the proper phrase is "less warm") because it is a lower temperature than your body. This is the reason why your house has a cold basement floor in Canada. To understand why that is significant, let's think about fundamental physics concerning heat transfer. It is a fact that heat naturally moves from warm to less warm, and there are only three types of heat transfer: Convective (warm air rises. Think of a warm air balloon) Radiant (think of the heat from a fire) Conductive (think of touching a hot element on the stove) So, comparatively, the slab, being at a lower temperature than your feet, draws the heat from your feet which your brain senses and identifies as uncomfortable or "cold." The longer you stand on the floor, the more the heat will transfer from you to the slab and make you feel less and less warm and more and more uncomfortable. Our bodies generate heat, and just like any other heat source, we radiate heat energy as it gets absorbed by anything lower in temperature than our body, such as the air, furnishings, wall surfaces, and unheated floors. There is no practical way to eliminate this type of heat transfer, but it can be reduced significantly by raising the surface temperature of the biggest "heat magnet" in the room, which is the floor, and that's where Ventgrid12™ can help. Ventgrid12™ provides a thermal break between the floor finish and the less warm concrete slab by creating an air space between the two surfaces. Ventgrid12™ practically eliminates conductive heat transfer, much like a double pane thermal window reduces heat loss versus a single pain. So, the longer you continue to stand on the floor barefoot, the more you'll feel "cold" because the heat is being transferred out of your body right through your feet.
  • How Does “R-Value” Play a Role in Keeping My Floor Warmer?
    Answer: The term R-value as it relates to insulation is often misunderstood. The definition of R-value is – The measured resistance of a material to transfer heat energy. If we think about the three types of heat transfer, which ones affect a floor's temperature? Well, it's not convective, so radiant heat loss is a factor as is conductive, but conductive is the one we feel the most. Again, to use an analogy, think of the hot element on the stove. What would lead to a painful burn faster, holding your hand close to the component or on it? The answer is painfully apparent. When it comes to insulating a floor from conductive heat transfer, all that is needed is to create a gap, or in technical terms, a "thermal break," to stop the flow of heat from your feet to the slab beneath. Still not convinced? Well, try this little experiment: Save up a bunch (dozen or so) water bottle caps. Place them together side by side on the floor flat side up, covering an area roughly the same size as your foot. Then stand on top of them and feel the difference from standing flat on the concrete. No insulation in a bottle cap, but the difference is noticeable. Why? Because a thermal break was created between the concrete and your foot, almost eliminating the heat transfer. Why do people think we have to put rigid foam insulation on top of our floor to make it feel warm? Because they don't understand heat transfer, and some companies like to sell rigid insulation. But now you know that Ventgrid12™ will work as a perfect insulator from conductive heat loss, the only actual heat loss that makes us feel cold standing on our basement floor.


It is a common misperception that exterior siding such as vinyl, wood, aluminum, brick, stone, fibre cement, and others are intended to keep all water out. Wind and solar-driven rain will penetrate all exterior wall cladding systems, which is perfectly normal. The only possible exception might be “face sealed” systems such as EIFS (Exterior Insulation Finishing System). Still, these assemblies only effectively keep water out if the sealant around openings such as windows and doors is adequately maintained, which is rarely the case.


So, where does the water go once it passes through the face of the wall cladding? Well, that all depends on how the wall was constructed. Suppose the siding material is affixed directly to the wall sheathing with no airspace provided. In that case, the water will be trapped between the back of the siding and the WRB (Water Resistant Barrier) or sheathing paper. Water can build up over time, and it may never completely go away in more humid climates. If that happens, building materials in contact with the water can deteriorate. Many materials used in construction, such as wood, insulation, fibre cement, brick, gypsum board, etc., are highly absorbent and therefore also susceptible to rot.


The solution is to apply Ventgrid12™ behind the cladding to provide a ventilated and drained airspace, allowing water to escape and air to flow through and dry out the wall assembly materials. Ventgrid12™ is strong, rigid, easy to use, and affordable.


Consider the high cost of replacing the siding on your home or worse, repairing damage caused by rot in the wall assembly and Ventgrid easily becomes an essential and affordable investment in preserving the beauty of your home.

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