27 Apr '13, 11am

Insulation brick from the exterior #green

I am renovating an end-of-group brick rowhome in Maryland. The home was built in 1914 and has 8" masonry load bearing walls. The owner is interested in exposing the old masonry walls on all (3) exterior sides of the building. To do this I will have to insulate from the exterior and install new cladding. I am not confident in installing 4" or so of rigid insulation on the old masonry, mostly due to cost/ performance of fasteners that long into the old masonry. The rainscreen and new cladding will also be relying on the same type of fastener. Question #1: Is there a good way to fasten all of the new exterior layers to old brick? I am ready to ditch this option for the one below: Option 2: I am thinking about pouring a small footer and framing a new 2x6 wall outside of the existing brick exterior. The wall would be held off the wall 2 inches and tied in at 4' intervals. I cou...

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