Inspecting Your Homes Attic. There should be an access opening to all attic spaces that exceed 30 square feet and have a vertical height of 30 inches or more. The rough-framed opening should be at least 22 inches by 30 inches. It should be located in a hallway or other readily accessible location. An attic access that is located in a clothes closet is often inaccessible due to permanent shelving installed. There should be headroom that is a minimum of 30 inches above the attic access. In some places “attic” is used more specifically to apply to lofts which have boarded floors and ceilings, and usually windows or skylights, and then “loft” is kept to mean a dark, unboarded roof-space which lacks these features.
Knee walls are vertical walls with an attic space directly behind them. You’ll typically find them in houses with finished attic spaces and dormer windows, as with 1-story houses. There are a couple of ways that you may see a knee wall insulated. The most important areas and most overlooked areas to insulate are the open joist ends below the knee wall. Air sealing reduces heat flow from air movement, or convection. Air sealing prevents water vapor in the air from entering the wall assembly. In a 100-square-foot wall, 1 cup of water can diffuse through drywall without a vapor diffusion retarder in a single year. Fifty cups can enter through a -inch round hole. Air sealing is 10 to 100 times as important as installing a vapor diffusion retarder.
Insulation performance is measured by R-value – its ability to resist heat flow. Higher R-values mean more insulating power. Different R-values are recommended for walls, attics, basements and crawlspaces, depending on your area of the country. Insulation works best when air is not moving through or around it. So it is very important to seal air leaks before installing insulation to ensure that you get the best performance from the insulation.
If you hear noises in your attic and you are unsure as to the source, it’s relatively easy to determine if it’s squirrels – squirrels are active during the daytime. Thus, if you hear scampering and scurrying noises during the day, it’s likely squirrels. Other attic-dwelling critters, such as rats and mice, bats, flying squirrels, opossums, and raccoons, are nocturnal, so they mostly only make noise at night. Flying squirrels are also nocturnal. If the noises happen at night, there’s a strong chance of mice or rats.
The squirrel often finds bedding material by shredding roof or wall paper, and shredding vent ducts and insulation around pipes. The biggest problem is that they chew, and I’ve seen dozens of cases in which they’ve chewed electrical wires. It’s estimated that half of house fires of unknown origin are due to rodent chewing on electrical wires.
Most people will have no reaction at all when exposed to molds. Allergic reactions, similar to common pollen or animal allergies, are the most common health effects for individuals sensitive to molds. Flu-like symptoms and skin rash may occur. Molds may also aggravate asthma. Fungal infections from building-associated molds may occur in people with serious immune disease but this is very rare. Most symptoms are temporary and eliminated by correcting the mold problem in the home.
When your home is inspected by a Professional Home Inspector they are checking for proper ventilation, presence of moisture, proper insulation, mould, proper structural support and signs of rodent or animal entry. Bat feces or vermiculite insulation removal can run into ten thousand dollars or more for removal. Compared to the cost of hiring the Barrie Home Inspector for $200.00 this is a really cost effective way to protect yourself and ensure Peace of Mind on your next Real Estate purchase.
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