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Nunc porttitor placerat vehicula. Donec ac mauris sit amet lectus posuere maximus eu sed ante. Ut dolor tellus, tempor et erat sit amet, ornare gravida mauris. Cras ornare sed metus a gravida. Morbi mattis at purus non finibus. Nunc nec tellus laoreet, tempus tortor a, convallis tellus. Praesent congue urna vitae quam euismod ultricies. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Etiam accumsan, urna nec rutrum euismod, nulla libero imperdiet velit, quis sagittis urna leo ac dui.

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Picture Testing

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Proin sollicitudin cursus orci, ac venenatis nulla vehicula vitae. Suspendisse est ante, consequat et purus in, viverra ullamcorper ante. Vestibulum non euismod felis. Sed eget rutrum nisi, sit amet mollis odio. Sed vitae arcu ligula. Nullam tellus risus, lacinia eget eleifend et, porta eu nisl. In lectus risus, rhoncus vitae auctor faucibus, vehicula ut ante. Sed condimentum lacus non orci vulputate laoreet. Quisque aliquet pulvinar nisi non pellentesque. Suspendisse eget pellentesque turpis, ut elementum elit. Nulla vel risus congue, lacinia sem ultricies, convallis justo. Nunc nec laoreet lacus. Sed eu neque hendrerit, pharetra quam eu, commodo ipsum. Integer efficitur tincidunt sem, quis aliquam metus dignissim at.

Fusce vulputate viverra magna, at maximus nunc vehicula sed. Quisque id elementum felis. Nam dapibus, lacus et pulvinar finibus, tortor velit facilisis lorem, ac cursus tellus odio quis nulla. Nam sed leo sit amet ante efficitur posuere. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse rhoncus dictum dui, nec aliquet eros placerat id. Sed vel nibh metus. Aenean vitae risus vel quam malesuada rhoncus et non ante. Maecenas a semper urna. Sed sapien neque, commodo scelerisque feugiat eget, tempor condimentum libero. Fusce a iaculis nibh.

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Building Science-Existing Construction Improvements

This three-part series first appeared on the Green Building Advisor website and has been condensed into one post.

An unconditioned and uninsulated crawlspace, an unsealed and uninsulated forced air heating system, and an uncovered dirt floor, which by the way is has a sewage leak.  If this were your home and you wanted to make improvements, where would you start? Continue reading “Building Science-Existing Construction Improvements”

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Construction Design-Performance Metrics

Most new homes built today follow the prescriptive code path for energy efficiency.  Those requirements will depend on the code cycle of your area and your exact climate zone.  The requirement for my area are 3, 3.33, 10, 15, 20, and 49.  These are the code minimum performance numbers for different assemblies in the home.  Let’s discuss each of these numbers, and then I’ll give my opinion as to where I think they should be. I’ll start with the number three and go in the order of the list. Continue reading “Construction Design-Performance Metrics”

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Construction Design-Insects and Rodents

When I purchased my old home, the 1952 Cape in late 2018, the basement area looked good.  Someone took the time to paint all the concrete walls and floor and cleaned everything up to look nice.  Shortly after we moved in, the cat caught a mouse and then the following summer, the basement became a bug gathering place.  Ants, spiders and other bugs apparently wintered in another area and returned to my house in the spring.

Continue reading “Construction Design-Insects and Rodents”

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Construction Design-Using Fibrous Sub-Slab Insulation with In-Floor Heat

I’ve written about sub-slab insulation and heated floors several times over the past couple years, this post is about something I’ve been thinking about for a while now, using a fibrous insulation, like Rockwool’s ComfortBoard 80 or 110 under a concrete slab with hot water heat.  The questions I had about this strategy are one, will there be an issue with compression of the insulation when concrete is poured over the product?  And two, will a staple be able to hold the hot water tubing in place?

Rockwool ComfortBoard being installed below a concrete slab.  Photo by Travis Brungardt

Continue reading “Construction Design-Using Fibrous Sub-Slab Insulation with In-Floor Heat”

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Building Science-Wintertime Interior Humidity

As I write this post at the end of November, our outdoor temperature is 28°F with an outdoor humidity of 75%.  Inside my home, the temperature is 70°F with a humidity level of 21%.  Slightly uncomfortable humidity levels for my family.  During last year’s polar vortex, when the temperatures reached nearly -40°F, my indoor humidity dropped to 9%, much too dry.  Knowing what I know about building science, I will not operate a humidifier.  This post will explain why. Continue reading “Building Science-Wintertime Interior Humidity”