Countertops

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We decided to make our own countertops out of concrete, using recycled glass for the aggregate. We found the book Concrete Countertops: Design, Form, and Finishes for the New Kitchen and Bath to be inspiring and helpful for getting started. Most of that book talks about making countertops out of conventional concrete, i.e. with cement and sand and gravel, but we like the look of glass aggregate. Here are a couple of examples from Vetrazzo that show the general ideal of what we’re aiming for:

Since our property already has some piles of old glass containers back in the woods from prior owners who thought that dumping trash in the woods was a good idea, we decided to clean up their mess and recycle the glass into countertops for the house. Here’s a photo of Liz washing the crates of mostly-broken glass jars and bottles we dug out of the woods.

Concrete Mix Recipe

Here is the final recipe that we used for our countertop mix. These quantities make approximately 1 square foot at 1.5 inches thick, with a little extra, so we multiplied this times the square footage of each countertop to get the final quantities that we mixed up:

Item Quantity
Crushed Glass 11.4 lbs (typically 7.4 lbs clear glass plus 4 lbs colored)
White silica Sand 4.8 lbs
White Portland Cement 3.6 lbs
Cheng Countertop Mix 88 grams
Polypropylene Fibers 2 grams (optional)
Water 1.3 lbs (plus more as needed to make a workable mix)

The amount of water given above yielded a fairly stiff mixture, and then a little more water was added to make a workable consistency. The Cheng Pro-Formula Countertop Mix is available in various colors and we used the base mix but the “platinum” color is similar. It contains additives that improve workability and reduce shrinkage and cracking, including some chopped polypropylene fibers. We added a bit more fibers to our mixture and they’re probably not necessary, but our local concrete supplier sold us a bag for just a few dollars and it was enough for all our countertops.


Cottage Kitchen Countertops Making countertops for the cottage kitchen.
The Sitting Counter Making the sitting counter for the main kitchen.
Main Kitchen Countertop – South Making the south segment of the main kitchen countertop.
Main Kitchen Countertop – West Making the countertop for the west side of the main kitchen.
Main Kitchen Countertop – Southwest Making the countertop that holds the main kitchen sink.
Main Kitchen Countertop – North Making the countertops for the main kitchen.
Main Kitchen Countertops Making the countertop for the main kitchen.
Main Kitchen Cabinets Cabinets in the main kitchen.
East Bath Countertop Making the countertop for the east bathroom.
Middle Bath Countertop Making the countertop for the middle bathroom.
Cottage Bath Countertop Making a countertop for the cottage bathroom.
Second & Third Countertop Tests Testing some new glass colors for the cottage bath countertop.
First Countertop Test Testing the mixture and process for making concrete countertops.
Building a Glass Crusher Converting an old clothes dryer into a glass crusher for making countertops.