"Hugo Nebula" wrote in message


Strictly speaking, floor joists under baths should be doubled. In
practice however, unless the joists are at their maximum span and the
bath is a cast-iron affair, it's probably not necessary. If the
joists were overloaded the floor would sag in the centre before
anything else. It would have to be seriously overloaded for it to
affect the bearings, and even then it would crush the timber before
the masonry.

Most baths are fitted up against the wall thus the maximum strength of
the joist is in play. Howver it might be worth checking if the floor
joists have been messed with. And are they fitting into their housings
in the wall or in their hangers?

To find all this out, and to check you have the required joist sizes and
spacings you must take up a portion of the floor. It may sound daunting
but it will only require a cheap electric saw costing about £20, a
handful of screws to replace the board and a very patient wife C/W
dustpan & brush.


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