the.com/dry rot
the fungus that eats your house from the inside while looking suspiciously calm outside
means A destructive fungal decay of timber that breaks down wood from within, leaving it cracked, crumbling, and structurally useless even when the surface looks deceptively intact.
from A plain compound of "dry" and "rot," the name is a bit of a misnomer that has survived for centuries. The wood ends up dry, brittle, and crumbling — hence "dry" — but the fungus itself actually needs moisture to take hold, drawing water through its own thread-like strands to colonise even drier timber nearby. "Rot" descends from Old English "rotian," to decay or putrefy, with cousins across the Germanic languages. So the term captures what you see — dry, friable wreckage — rather than the damp conditions that quietly started it all.
- misleading name
- It actually needs moisture to start spreading
- long reach
- Tendrils travel meters through brick to find fresh wood
- its diet
- Devours cellulose, leaving wood cracked into dry cubes
- survival mode
- Can lie dormant for years awaiting damp
- silent species
- Serpula lacrymans literally means weeping fungus
serpula lacrymans — fungus that destroyed much of london's medieval timber buildings, still major cause of structural damage in uk homes
rose theater london — shakespeare-era playhouse excavated in 1989, timbers severely compromised by dry rot despite preservation efforts