Craft Gossip

Independent craft blog since 2007

Tips for Grout Issues from CMA

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This was in an email sent to members of CMA (Contemporary Mosaic Art) website…

A message to all members of CMA

CMA Member News Reporter

Submitted by Tricia Huffman

May 14, 2011

Grouting Continued..

Since this is the finishing touch to your hard work, I am expanding on the issue of grout issues from last report to address some questions that came to me as a result.
I went to the experts whom manufacture these products, with my questions about it; here is what they said. “Over mixing or adding too much water to the mix would indeed weaken the strength of the grout joint and cause pin-holes and possibly efflorescence. If mixed according to manufacture instructions, adding more dry grout would not be needed. ( Though some artists use this technique when water supplies are limited, and have claimed great success with it.)
As far as using pigment to over-colour cured, unsealed ,non-epoxy grout joints, he indicated that using dry (French) pigments mixed with a tiny amount of water would indeed be permanent, and would have the same effect as grout stains currently on the market .
The last issue to address this month would be efflorescence, which is a white, chalky haze that sometimes appears on grout after it has cured. Here is a list of some of the causes.
1. Too Much Water was used when grout was mixed.

2. Concrete substrate had not fully cured or had a moisture vapor issue prior to adhering mosaic.

3. Water used in mixing or cleaning the grout was high in chlorine or had a high mineral content.( Pond water or home water softeners and city water that is heavily chlorinated or has a high mineral content can contribute to efflorescence.)

4   Temperatures were too cold while grout was curing.

5. Grout joints were wiped excessively during initial cleanup.

6. Standing water was left in empty grout joints prior to
grouting.

7 Tile was especially dense and nonporous.

8 Grout was prematurely exposed to heavy amounts of water before it had a chance to cure.

Always consult manufacture instructions for your particular needs.

Have you read?

Learning Numbers for Preschoolers

Learning numbers actually involves a few different skills, from recognizing the shape of the number and knowing the word that goes with it to understanding one to one correspondence for counting and what order the numbers go in. 

A lot of this is learned best through play and activities that get kids counting and tracing and otherwise interacting with numbers. These activities can help. 

I specifically mentioned tracing above because of these number formation rhymes cards from Teaching Mama, which can be used in lots of ways to practice making the shapes of the numbers, including tracing, lining up items on the number shapes (and counting them!), using playdough to shape the numbers and so on. Each number has a little rhyme to help you remember how to make it, which is cute. 

And speaking of playdough, you can find lots of playdough number mats with different themes for kids to use as they learn about numbers. Preschool Play and Learn, for example, has these cute apple themed ones that also teach one to one correspondence as you learn the numbers and count to 10. 

Or use these tree-themed ones from Live Over Cs to form the numbers, count out items on a ten frame and place the correct number of items in the tree to match the number (do this with playdough, little buttons or whatever manipulatives you have on hand). Your little builders will also love these Duplo number mats from Life Over Cs, which allow you to shape the number out of blocks and count out the number of blocks that corresponds to each number.

I also love these mats from The Savvy Sparrow that include the number and the word you can trace with playdough or marker, showing how to count the number on your fingers, a tens frame and a number line.

Finger plays and counting songs are lots of fun for little ones, too, and Childhood 101 has a great collection of songs and rhymes having to do with numbers (as well as printable song cards you can use with them. 

This cardboard roll number chain form Hands On As We Grow would be a fun addition to singing number songs or to use in other play and counting games. And we all love something easy to make with stuff we already have. 

Older kids who already know the order of numbers can also use these connect the dot number printables from Fun Learning for Kids. Or use the shapes for playdough mats or to practice tracing even for kids who don’t know all the numbers in order yet.