"Mark" wrote in message
...

wrote in message

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On 7 Mar, 22:34, RubberBiker wrote:
AIUI the diamonding pattern in the timber is characteristic of
wet rot
and, as you say, the only remedial action required should be to
cut
out and replace the affected areas. So long as the source of
dampness
has been stopped, ther should be no more problems. Was that an
enclosed roof void with no ventilation?

Dear Tim
The fungus is unquestionably a brown rot but as dry rot is also a
brown rot that does not help!
The photographs have most of the characteristics of wet rot and
none
of dry rot. The white part looks to me like a sporophore of C.
puteana
(one of the wet rots).
The reasons for my opinion a
a superficial hard outer skin about 0.5 to 1.0 mm thick
the absence of obvious hypal strands
the absence of visible mycelial strands
the confined location

It was fine up to here

the characteristics of the location (in a roof timber without the
necessary lime mortar for dry rot)

But that's rubbish, the presence of lime mortar or not
has no relevance as to whether Dry Rot could form in the above
case.

-



Except indirectly - lime mortar tends to imply an older building which
may not have the advantage of modern understandings of the need for
sub floor or roof ventilation hence more suceptable to dry rot if
moisture makes its way into the structure, which the very age of the
building increases the likelyhood.

AWEM