Hallway On the second-floor landing, just outside Liv’s bedroom, is the family’s “mushroom wall,” comprised of a blend of cypress and hemlock repurposed from the bedding bins of a mushroom-growing facility. During the mushroom growth cycle, enzymes digest and erode the soft wood grain, producing an organic, sculpted effect. ECOS chalkboard paint—zero VOC and non-toxic, natch—appears under the stairs.  Photo 4 of 12 in Sustainability Guided Every Decision at this Town House Remodel in Harlem