A lot of joists in my crawl space have an imperfection> long powdery cracks.
I assumed it was dry rot, but now I'm wondering if it is just poor timber.
The house is about 60 years old and the flooring is rimu, it could be non
durable sap wood. I think a sap wood problem isn't as bad as dry rot???
I noticed one I tapped with my knuckles had a hollowish sound. I counted
about 13 joists and bearers affected, but i think it would only be a problem
where perhaps a bearer is supporting a wall and part of the roof. The roof
is made of heavy concreter tiles... If i stay here I'd like to replace it
with long-run iron (stronger and 1/10th the wieght (I'm told))
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