Meanwhile, during March and April...

Once the masonry was finished, the roofers returned to complete the metal roofing and ridge vent near the chimney and to finish up other miscellaneous roof-related tasks.

Here's Tim cutting the plumbing vent hole:

Not sure what he's thinking about here (contemplating career options?):

Mr Bean and Eileen spent an afternoon building houses with the left over pieces of firebrick left in the yard.

And the basement flooded a few times. The water did no real harm to anything, but John spent many hours pumping it out each morning.

Here's the unfinished drainage ditch which Gary dug out more to help drain the footings. Once all the site work is finished, the flooding will no longer be a problem.

Don Pittsinger, our plumber arrived. He tolerated all the commotion going on around him with ease.

He does quality work, too.

Don installed pipes for future solar hot water. Plumbing for baseboard heating is also in place for if /when it's desired. Notice that Don also got his semi-annual haircut.

Rachel came one day and painted the pre-cut boards which will become soffit vents.

When he wasn't pumping water from the basement, or digging out the drainage ditch, or collaborating with the subcontractors, John installed the HRV (heat recovery ventilation) system. An HRV system basically brings fresh outside air into the house and pumps out the stale indoor air. It takes heat from the inside air and uses it to warm the outside air. "Popular Mechanics" explains it nicely:

• "A heat-recovery ventilator (HRV) is similar to a balanced ventilation system, except it uses the heat in the outgoing stale air to warm up the fresh air. A typical unit features two fans—one to take out household air and the other to bring in fresh air. What makes an HRV unique is the heat-exchange core. The core transfers heat from the outgoing stream to the incoming stream in the same way that the radiator in your car transfers heat from the engine's coolant to the outside air. It's composed of a series of narrow alternating passages through which incoming and outgoing airstreams flow. As the streams move through, heat is transferred from the warm side of each passage to the cold, while the airstreams never mix."

This is what the HRV unit looks like:

When the panel is removed, the core can be seen:

Here is a section of ductwork running along the knee wall upstairs:

This (not quite completed) duct will bring fresh air into the dining area below:

It's a pretty amazing invention. It's also quite impressive that John researched and consulted with an expert on the installation so that he could confidently do this himself. We saved some serious lettuce by doing this work ourselves.

The next post will continue with more progress from March and April: Insulation, sheetrock and spring popped somewhere in there too.