Grout Shrinkage


Postby breshe » Sat Oct 04, 2008 8:51 am

When grouting I always have to do a second grout as small holes appear in the first coat as it shrinks down.

Is this normal?

Is there a way to apply the grout to ensure it requires one application only?
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Postby plumbbob » Sat Oct 04, 2008 4:05 pm

Several possibilities:- You are using a poor quality grout, the gaps are too wide for the type of grout (check the instructions - it should say), or you are mixing it too thin so when the water evaporates, it shrinks and the gaps appear.
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Postby breshe » Sun Oct 05, 2008 8:26 am

I am using Wickes ready mixed grout/adhesive. Is this poor quality?

Tks
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Postby plumbbob » Sun Oct 05, 2008 10:32 pm

Very probably. Personally I would never use a ready mixed grout or a DIY product. My favourite is Bal which comes as a powder you mix with water. They do a whole range of products suitable for all types of tiles and widths of joint. Stick to a trade professional product.
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Postby chris_on_tour2002 » Wed Oct 08, 2008 7:27 pm

i'd put money on it that the only thing that you've done wrong is to buy an inferior product.

absolutely agree with plumbob - get yourself a decent quality grout in powder form that you mix up yourself. never never never buy ready mixed grout.

never buy this kind of building material from DIY stores - the pros don't shop there for this kind of stuff. go to the places where they go, ie trade tile shops. they will give you the right gear. and BAL is generally the brand of choice, and for good reason, its good stuff.
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Postby chris_on_tour2002 » Wed Oct 08, 2008 7:28 pm

one other thing:

[quote]"I am using Wickes ready mixed grout/adhesive. Is this poor quality?"[/quote]

YES!!
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Postby breshe » Wed Oct 08, 2008 7:29 pm

Will do and thanks for the advice
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