This product requires a minimum of 24 hours to cure before grouting or light traffic, depending upon temperature and humidity. Polyblend®Grout is recommended after drying. I hope this helps.

Hi Wcarey,
There is an "unmodified" thin set available through our stores, the name of them would be either CustomBlend or MasterBlend made by Custom Building Products. I hope this helps.

The square footage for the Flexbond Fortified Thin Set Mortar is as follows depending on the size of the trowel which depends on the size of tiles:
Trowel Size__________________ Coverage
1/4" x 1/4" x 1/4" Square-Notch ___ 90 - 100 sq. ft.
1/4" x 3/8" x 1/4" Square-Notch ___ 63 - 70 sq. ft.
1/2" x 1/2" x 1/2" Square-Notch ___ 45 - 50 sq. ft.
3⁄4" x 9⁄16" x 3⁄8" U-Notch _______ 36 - 40 sq. ft.
So if you use a 1/4" x 1/4" x 1/4" Square-Notch then you would need about 5 bags. I hope this helps.

Unfortunately only epoxy bonds to epoxy, so you will need to either get rid of the epoxy finish or use a different product. Sorry for the inconvenience.

Unfortunately, there isn't a product made by Custom Building Products that is pre-mixed o fill in the mortar lines on my brick fireplace. Sorry for the inconvenience.

all thin set motars- some give better performance than others - never use a pre-mixed mortar exterrior

Yes, this product is compatible with electrical floor installations. I hope this helps.

The cure time before it is grouted is about 24 hours. I hope this helps.

The approximate ratio is 3:1, making sure that you come to a peanut butter consistency. I hope this helps.

It is recommended to use a white colour of the Flexbond Fortified Thin Set Mortar if your marble is white; if the marble is green or black it is recommended to sue epoxy. I hope this helps.