Talk with the manufacturer. My suspicion, though, is that it will be just fine. I've done woodworking for many years and have opened cans that were sitting around for several years that were just fine after they were properly stirred. I suggest you take the cans back to where you bought them and have them mechanically re-shake the cans for you. Then try out some of the finish on a large piece of scrap wood to confirm it applies and cures normally. If your experiment works, go for it.

You may also wish to read this thread concerning the product: https://www.houzz.com/discussions/5372796/loba-compared-to-bona-traffic

Loba has a short lifespan in the can. I've heard the HIGH END Loba WS 2K will go 18 months as a 'finish', but then it must be used as an undercoat. At 24 months, it is not to be used as either a floor finish nor as an undercoat.

The lower grade product such as the Easycoat probably does NOT have the longevity of the higher end products. Water based products are not like oil. They have chemicals that keep them 'fresh' but those chemicals break down which allows the product to become stale.

At 18 months, I would be happy to see you use it as the first coat. The HIGHER END products would then be used as the 2nd and 3rd coats of finish.

Call Loba and ask. Give them the batch number...and find out. It is possible it can be used as a 'sealant' like product...but you also have a very good chance it is no longer viable and should be taken to the local recycling centre (for paints and liquids).

If, the product froze in the winter, it's no good. The freeze breaks down the chemicals. All water base products have a freeze and thaw cycle. With most product just having one cycle.

Lol, I missed the last sentence. Good catch kudzu!

It's only a year, you're fine, use it.

The OP states: "...now the Loba is a year past the expiration date on the bottles."

Loba gives 12 months from the date of manufacture as the expiration date. That means a 'year past' that expiration date means it is 24 months old. And that's where the problem is. It is probably too old to be used as an effective finish...but it *might be 'good enough' as a first coat/sealant.

If, you’re skeptical, call Loba’s chemist. They will be able to tell you whether the product is good or not.

The product did did not go through a freeze and thaw cycle. I think it will be fine.

shake some up and pour it onto a piece of plywood and spread it out, see what happens. If, the chemicals expired, you will see results. Crawling in the finish or sludge is poured out.

Information on on the label is for reference.

I think if the containers were never opened, it should be fine. But whatever you decide, please do not open the containers until you are ready to apply the product. Opening the container introduces air and moisture, and it could significantly reduce its life span.

I don't know how modern floor finishes react to air and moisture, but I remember when i was going to college I worked for a floor refinisher during the summer, and one hot, humid summer day, an apprentice opened two gallons of finish at the beginning of a job, but resealed the second one about 20 minutes later. The next day, the contents had turned into a gel-like goop.