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DIY Concrete Countertop Questions
What is the difference between the Z Liqui-Crete add mix and the Z Counter-Pack add mix?
The difference between the two is the consistency of the mix. The Liqui-Crete is designed to use slightly more water, giving you a more flowable mix that will flow throughout the fiberglass mesh reinforcement. If you are using a more traditional reinforcement such as welded wire mesh, you will be better off with Counter-Pack. Both will achieve about 7500psi @ 28 days.
I ordered a Sink Form but I don't see it in my shipment. Does that ship seperately?
The Sink Form will come in the same package as the Countertop Edge Forms.
Which sealer should I use?
Z SiAcryl 14: Easy to apply penetrating sealer. Satin finish. Will not alter color of concrete or leave residue on concrete surface. Z Countershine Polish can be added to increase gloss. Only sealer recommended for outdoor countertops.Z Aqua-Poxy: 2 part, easy to apply epoxy sealer. Semi gloss finish. Will slightly enhance coloring of countertop without darkening. Put on mulptiple coats to build up thick epoxy look. Z-Poxy: 2 part traditional epoxy sealer. Not recommended for first time users. High gloss finish, will significantly darken countertop. Will give you thick wet epoxy look.All sealers are 100% food safe.
When can I snap off the forms?
The forms may be removed as soon as 24 - 48 hours after the pour. Waiting longer is also fine.
When can I start staining my countertops?
In most cases, you can begin staining as soon as 3 - 4 days after the pour.
When can I begin sanding?
In most cases, the countertop should be hard enough to sand 2 days after the pour.
When can I seal my countertops?
f you are using the SiAcryl 14, you can usually seal 4-5 days after pouring. If you are using an epoxy sealer you must make sure the concrete is 100% moisture free. On a slab this thick, you will usually be safe after 10 days.
Are Z Counterforms re-usable?
No, because the tab under the concrete top stays in place when you snap off the Z-Counterform.
Can I do an overhang?
You can do up to a 12” overhang without any additional support or reinforcement. You will need to temporarily support the cement board so it does not flex or crack under the weight of the wet concrete. To do this, we will usually just use some 2x4 legs. They should stay in for 2-3 days while the concrete sets up.
Do you sell forms indivually?
Unfortunately, all of our forms are packaged in the manufacturing line and they are packed very well to help prevent damage in shipping so we do not break apart kits.

Z Liqui-Crete Calculator

Enter the square footage of countertop space (Length x Width). This is for standard Z Counterforms only (not Commercial or Pre-cast)

sq. ft.