FAQ1 – Envirothane 2100 & 2200

1. What is the best way to prepare a concrete floor for painting?

The important thing about a floor is that it is clean, dry, and etched. In the last 15 years, diamond grinding has become much more cost effective and therefore popular. We see this as the ideal way to prepare a floor, although grinding marks need to be minimal or they are likely to show in the finish coat. Some contractors still like to acid etch, and we are happy with a floor prepare this way so long as it is obviously etched and thoroughly rinsed. If a floor has a release agent of some sort on it, acid washing is unlikely to be adequate.

2. Is a hot, high pressure water blast suitable for the preparation of older uncoated concrete?

We see grinding as first choice then acid etching as second choice and water blasting only as a last resort. If water blasting is the only option we recommend the water droplet test to be done once the concrete has dried from water blasting. This test is where a few drops of water are placed on the concrete and if the water soaks into the concrete then the concrete should be fine for coating but if the water droplets bead on the surface of the concrete then the concrete needs to be treated further.

3. What is the main difference between E2100 and E2200?

E2100 finish is Satin and E2200 is Gloss.

4. How many coats of E2100 should be applied when Satin is required?

Normally two but on porous concrete three will give a nice finish.

5. How many coats of E2100 and E2200 should be applied when Gloss is required?

Normally one coat of E2100 and one coat of E2200.

6. Can E2200 be applied direct to the concrete?

Yes, but mostly the better system will have E2100 being applied as a primer coat. E2100 is lower solids, achieves better concrete penetration, is more economical and is very easy to use.



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