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Posted by Michael B on February 6, 2007, 10:30 pm
What can I say? Looks like your question has been answered,
and that the consensus is that grout is a dismal product for
stopping moisture migration. Now, for those others of you that
would like to do a job you can be pleased with 10 years later,
Google my last name (baugh) along with the terms 'silicone',
and maybe the term 'arctic ice'. Completely different concept
for the home remodel job.
For those that don't want to do the search, I advocate the use
of 100% NONPAINTABLE silicone, because if you can't make
paint stick to it, it's less vulnerable to staining.
And after removing the grout from along the shower base, be sure
to be putting plenty of weight to the area being caulked. If it were
a tub being grouted, you'd fill it with water first.
>
>
> > We've just bought a new house about five months ago and I'm having
> > problems with the master bath shower grout.
>
> > All along the edges inside the shower the grout is starting to turn
> > darker and it has cracks in it. It's fairly obvious to me that water is
> > getting into the cracks and causing the grout to erode.
>
> > The problem is that the builder says this is fairly normal and not to
> > worry about it!!!!!!!!! Should I or should I not demand that he
> > re-grout around the base of the shower enclosure??
>
> > Thanks for the help.
>
> The experts I talked to were quite firm on the opinion that grout
> was not appropriate for corners and the tub edge. They recommended
> 100% silicone caulk for those locations to accomodate the inevitable
> movement which will occur over time and temperature swings.
>
> Bob
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