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Mike's Home Inspector Blog

InterNACHI Certified Professional Inspector
Halifax, Nova Scotia

Subtle Defects

11/14/2021

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There is no such thing as a perfect home, and yes that includes my own house. Here are 3 subtle defects I found after moving in (and before I became a home inspector). Can you spot the issues? 
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This is what appears to be plain, ordinary insulation in the basement. The problem doesn’t lie with the installation or the R (insulating) value, nor is there a problem with mould or cold air infiltration and there is nothing wrong with using the red sheathing tape. The problem lies in the fact that this type of insulation is known as extruded polystyrene, which like all plastics is derived from petroleum by-products. As such, while it can be hard to ignite, once a fire has started it burns very rapidly with highly toxic smoke. As it is located in the basement, it would be nearly impossible to detect before the fire got out of control. 
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Solution: this type of insulation needs to be covered by a fire barrier, such as I have done here with drywall. This simple action can greatly reduce the spread of fire, allowing for precious minutes to take action. 
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This is a door frame that was walled over. How do I know this was added later and is not part of the original construction? Not only is the wood slightly different, but the plastic vapor barrier is missing over the former doorframe. This barrier is designed to keep wood and concrete from making direct contact, and having moisture travel up from the concrete into the wood by capillary action, which will reduce the wood's lifespan by promoting rot and mould growth. Below is proof that moisture is travelling up: you can see a moisture content of 10% compared to 6% to a nearby section of the wall with a proper moisture barrier. Generally, we start worrying when the moisture content hits 20% as that is conducive to rot and mould growth.   
Solution: given how the moisture content isn't in the "danger zone" it is easier (and cheaper!) to just leave this alone, especially since this is not a new home. If this wood needs to be replaced in the future a plastic barrier such as polyethylene will be installed first.
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This is from our basement where the washing machine is connected. All electrical receptacles within 5-6 feet of any water source need to have ground fault circuit interrupter (GFCI) protection as water and electricity do not mix.
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Solution: I replaced this receptacle with the proper GFCI unit and while you may have noticed it was installed “upside down” it is 100% acceptable to install them upright, upside down or even sideways. I have inspected houses that appeared on the surface to be perfect, only to discover similar issues that aren't always apparent. This is just one of many examples of why I love being a home inspector! 
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Inside Edge Home Inspections Ltd. 
Halifax, NS
902-209-9921
[email protected]
Proudly Serving the HRM & Central Nova Scotia
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