Products Part 1

FOUNDATION The Lafarge cement mix used in the foundation replaces 30% to 50% of the Portland cement with fly ash and slag. The foundation is waterproofed with EPro EcoBase, a flexible membrane that is VOC-compliant and nontoxic while still providing a seamless bond. EcoBase II was used as a capillary break between the footings and the concrete wall to reduce the chance of moisture traveling from below the footing up the wall.

FRAMING The house was framed in a matter of days thanks to pre-engineered wall sections and floor and roof trusses from Foremost Industries. Electronically engineered using the house plans, the panels were shipped to the site and installed with a crane.

Huber’s ZIP System wall sheathing boasts an integrated water barrier, eliminating the need for a separate housewrap and thereby speeding installation. Seams are sealed with ZIP System Tape. ZIP System roof sheathing also is available.

AdvanTech floor sheathing, also from Huber, features an advanced resin technology the company says provides for the lowest water absorption in the industry and prevents against warping; it comes with a 300-day no-sand guarantee. Bethesda Bungalows used SFI-certified wood.

TJI 210 I-joists from iLevel by Weyerhaeuser carry SFI certification. The 2 1/16-inch-wde joists come in four depths.

The insulation contractors began with Demilec Agribalance open-cell spray-foam insulation (white); closed-cell BASF ComfortFoam spray-foam (green) was used to finish the job after the first product ran out. Agribalance is made with more than 10% renewable, agriculture-based products, and carries USDA BioPreferred certification. It provides an R-value of 4.45 per inch. ComfortFoam, a medium-density foam, provides an R-value of 6.7 per inch and is certified by Energy Star and Greenguard.

The Premium SiteLine EX casement aluminum-clad wood windows from Jeld-Wen feature low-E glass and argon fill. The units have a U-factor of 0.34, an SHGC of 0.24, and a visible light transmittance of 0.43. They are available with SFI-certified wood. Exteriors come in 21 color options; interiors come in 10 options.

HardiePlank Lap Siding from James Hardie is available primed or with ColorPlus pre-finishing. Under its HardieZone system, the manufacturer engineers its fiber-cement siding for optimum performance under varying climate conditions to further ensure durability. Bethesda Bungalows used HZ5 siding, which is formulated to withstand freezing temperatures, snow, ice, and moisture. It also includes a beveled top and drip edge to improve water management.

Bryant’s Plus 95s gas furnace is Energy Star rated and offers up to 95% AFUE. Features include PerfectSense, a modulating heat system the company says provides 73% tighter temperature control versus single-stage furnaces; a humidity management system; pilot-free PerfectLight ignition; and a sealed combustion system. It works with the Evolution seven-day programmable thermostat.

A.O. Smith’s 80-gallon Voltex electric heat-pump water heater pulls heat from the surrounding air and transfers it to water in the tank, offering an Energy Factor of 2.3 and using half the energy of a standard tank-type heater, according to the firm. The Energy Star-rated unit has three operating modes to accommodate varying levels of demand.

Designed for the Mid-Atlantic climate, the Lifebreath Total Recovery Ventilator helps improve indoor air quality while maximizing energy efficiency. The unit exchanges stale indoor air for fresh outdoor air while transferring heat in the winter and humidity in the summer; during the summer, the unit transfers humidity in the incoming air by moving water molecules to the exhaust air stream via a non-cellulose membrane. It features five speeds and four operating modes.

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