400-404 & 406 Stewart Avenue Construction Update, 12/2017

17 12 2017

400-404 Stewart Avenue, a.k.a. the former Chapter House site, is fully framed and the brickwork is in progress. The brick veneer is Redland Brick Inc.’s Heritage SWB, and is similar in appearance to the original brick of the Chapter House, which was damaged beyond repair in an April 2015 fire. So the way this has gone is that yellow closed-cell spray foam was applied over the sheathing, probably by a subcontractor such as Goodale Spray Foam out of King Ferry. Closed-cell spray foam, made with polyurethane and applied a few inches thick, provides insulation under the brick. Brick is a tricky material in some ways – the plywood ZIP Panels are great for sealing a structure to make it air-tight, but brick absorbs moisture, so the spray foam not only serves as an insulator, it also provides a protective moisture barrier between the plywood and the brick. It’s typical to have a drainage gap underneath the brick so that they can dry out, otherwise the uninsulated brick is at risk of long-term moisture damage.

The roof looks to be covered in tar paper or similar material; this will eventually be layered over with chamfered asphalt shingles. The roof ZIP panels that make up the “awning” being built over the first floor will be covered in shingles as well, but those will be more expensive simulated slate. The trim pieces like the cornice may be cast stone or fiberglass over wood, and it looks like the window sills and heads might be cast stone. It looks like they’re using Marvin Windows for the windows themselves.

406 Stewart Avenue is still being framed with ZIP panels, now up to the third floor with just the roof trusses left. The drawings I have on file suggest the fenestration has been changed – the position and size of the second floor windows are different from the renderings, in particular the window on the far left of the front face, and one of the windows on the north side was moved further back from the street. It suggests some modest interior alterations, but the ILPC will be watching this like a hawk since these builds are under their jurisdiction (the East Hill Historic District).


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