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Lydia is playing with some PEX piping.
Note: The red pipe is for hot water supply, and the blue pipe is for cold water supply. compared to traditional copper piping, PEX (cross-linked polyethylene) is easier to install, has minimal heat loss through conduction, is quiet, and is easier to repair.
Lydia is running down the sloped part of the back yard.
Roofing note: The hickory colored roof is made of 30-year asphalt shingles. The difference between 15-year shingles, 30-year shingles, and 50-year shingles is mainly the thickness of the roofing material.
Exterior foam insulation note:
"In a typical stick-frame [wood framed] house, lumber occupies 27 % of the wall area. . .Since the insulating value of softwood lumber (R-1.25 per inch) is less than that of fiberglass or cellulose insulation (R-3.6 per inch), each stick of wood lowers the wall's overall R-value. [Current Washington state energy codes require that exterior walls have R-21 insulation.]
Each piece of framing lumber acts as a thermal bridge, a conduit for heat to leak through the wall. Thermal bridging is more significant that many realize.
For example, you would think that a 2x6 wall insulated with R-19 fiberglass batts would have an overall R-value of R-19. But according to hot-box measurements made by researchers at the Oak Ridge National Laboratory, the whole-wall R-value of such an assembly is actually R-12.8 if the bats are installed perfectly and only R-11 if the batts are installed poorly. . .
a continuous layer of exterior foam sheathing is the most effective way to limit thermal bridging thrugh studs and headers."
(source: Martin Holladay. "Thermal Bridging", Fine Homebuilding, April / May 2010, pages 16-17.)
Lydia is carrying a remnant of a cardboard cylinder that is used for the concrete footings of the deck.
Note: After the cardboard cylinder is buried into the ground, concrete is poured into it.
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Family picture in the garage
Notes: Lining the walls of the garage (and exterior walls) is a one-inch layer of extruded polystyrene, a type of rigid foam insulation with a R-value of 5. The red lines show where the contractor tape has been placed to seal the gaps between the sheets of insulation. In addition to its insulative value, the rigid foam insulation provides a very good air barrier to reduce unwanted air infiltration into the home. In many homes, excessive air leakage results in drafts and causes the heating and cooling systems to work harder.
For our general contractor, Joe Bergevin, this is the first home that he has built which has the exterior rigid foam insulation, something that we requested for the reasons noted above.
Family picture in back yard
Note: All of these pictures were taken on February 20, 2010 at the site of our future home.
Note: All of these pictures were taken on February 20, 2010 at the site of our future home.