How to Choose and Use Insulation | This Old House

This Old House general contractor Tom Silva explains the wide world of insulation. (See below for a shopping list and tools.)
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Shopping List for How to Choose and Use Insulation:
– notebook [https://amzn.to/2LnmzOb], pencil [https://amzn.to/2ZVftVe] and calculator, used to calculate and record insulation costs and quantities

Tools for How to Choose and Use Insulation:
– tape measure [https://amzn.to/2MXmOkN], for measuring room dimensions

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How to Choose and Use Insulation | This Old House
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  1. If you're here in 2020, it's been determined that water vapor amounts for about a quarter of a pint over the period of a year. Compare that to almost 12 quarts of water with just a 1 inch hole in your wall. Air movement > water vapor, every time.
    Also, a latex primer over your drywall is more than enough of a water vapor barrier.

  2. my neighbor had his spray foam from USA insulation….now having it removed because improper installation and now has a horrible odor. I told him burn the Fn house down

  3. I live in Ohio, can I and/or should I use Open Cell spray foam? We've gutted the lower level so it would be like applying it to new construction but the upper level will be retro fitted.

  4. No mention on the danger of improperly applied closed cell foam. Poorly trained, lazy contractors tend to spray it too thick in the hard to reach corners, believing thicker is better. In reality it does not off gas’s and cure properly when applied too thick because of heat build up and can render the home in-livable. Formaldehyde gasses build in the house. If going with closed cell insist on a contract that puts the cost responsibility on the installer or the GC if the product is installed improperly and a third party tester confirms the presence of gasses that are a byproduct of improper curing.

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