The first seven rowhouses on Eager Street have now been reduced to piles of bricks and mortar. Our job for the past week or so has been to take these piles and organize them into neatly stacked pallets of beautiful Baltimore brick. Before we began pulling bricks from the piles, we separated any wood matter so that it could be recycled.
With our operator Reds’ help, we then transformed our massive pile of bricks into several slightly less massive piles of bricks. Reds scooped up shovelfuls of brick and deposited them in three processing areas.
We then began the laborious (but very Zen) process of sorting through tens of thousands of bricks and identifying the ones we can salvage. On our site, brick processing follows a three part rhythm: pick, clean, stack.
During the first step, picking, there are a couple basic things we’re looking for:
1. Complete bricks: no partial bricks allowed.
2. There must be a clean face with minimal to no chipping.
Once these very basic standards have been met, we begin the process of cleaning the bricks. The idea here is to remove any mortar left clinging to the brick. The bricks from Eager Street were laid with lime-based mortar, which makes our job infinitely easier than if we had to remove Portland cement-based mortar. Portland cement became popular during the late 19th century, and by the 1930s it had supplanted lime as the primary binding agent in mortar. Portland cement mortar sets quicker and harder than lime mortar, which has made it a preferred construction material. For folks involved in deconstruction, it’s something of an arch nemesis; it’s just not practical to chip it away, tiny piece by tiny piece. Lime-based mortar, on the other hand, flakes away relatively easily and can be removed without too much trouble.
The photo below shows some of the tools we use. From the left, they are: a) a wire brush for removing bits of weakly adhered mortar, b) a brick hammer (sometimes called a mason’s hammer) that can be used to knock off chunks of mortar,with either the traditional hammer end used against a separately held chisel, or the chisel end used directly against the mortar, c) a mason’s chisel that can be used to break away chunks of mortar or as a beefy scraper, d) a 5-in-1 scraper tool to remove any stubborn bits of mortar from the brick’s surface, e) a smaller “beater” chisel that’s good for removing large chunks of mortar when placed just so, and f) a wire welding brush with slightly tougher bristles.
Once the bricks are cleaned, they’re tossed to a stacker who arranges them on pallets in a basket-weave pattern. We stack our pallets 13 courses high with 40 bricks per course for a total of 520 bricks per pallet. We then shrink wrap them and, voila!, a pile of century-old rubble turns into a gorgeous arrangement of reclaimed bricks, ranging in color from pomegranate (thanks to crew-member Reggie for the naming suggestion) to cherry red to a dark salmon hue.