The Living House
Material Reaction Lab
Compare how building materials record water, heat, airflow, movement and drainage failures—and what their surface cannot prove.
layer by layer
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Cast-iron Drain · PlumbingCast-iron drain corrosion
Internal scale and thinning alter flow, hold debris and can eventually seep or split.
Visible fingerprintrust flakes, slow drains, odor and damp joints
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Copper Pipe · PlumbingCopper pipe pinhole corrosion
Localized corrosion can create a tiny pressurized leak that sprays or mists nearby cavities.
Visible fingerprintblue-green staining, tiny jets and repeated wet spots
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Copper Pipe · PlumbingCopper pipe sweating in humid air
Cold water cools the metal below dew point and droplets wet supports and finishes.
Visible fingerprintuniform droplets, green deposits and wet insulation
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PEX Pipe · PlumbingPEX pipe rubbing against framing
Thermal movement at an unprotected penetration can wear the pipe over time.
Visible fingerprintclicking, polished contact points and eventual leakage
Open reaction →