Authentic Sauna Blog

Is there a better way to seal our sauna floor?

I’ve done it every which way ’til Tuesday. Rubber mats, Red Guard, etc. etc.

But I like this method the best. The three “F’s” of skim coating:

FRUGAL: $50 all in. Durarock is relatively inexpensive, easy to cut and lay down. $8.00 – $9.00 for a 3’x5′ sheet. A bag of vinyl cement is well under $20.00.

FORGIVING: Well mixed vinyl cement is easy to trowel and works its way into cracks and mistakes like nobody’s business.

FAST: All this takes about 20 minutes (and is actually kind of fun!).

Here’s how we prep our cement:

Here’s how we prep our floor:

Here’s how we lay it down:

Here it is “Finnished.”

This has worked great for me for about 10 sauna builds. My cabin sauna is 23 years old. I found a crack in my floor and simply mixed up a little vinyl cement English milkshake consistency, poured it on, and filled the crack. And that was 7 years (and 348 saunas) ago.

Once skim coated, our floor is ready for duckboards or a suspended wood step.

All good on this Western front.

If there’s a better way to Finnish off our hot room and changing room floors, i’d like to know about it!

Stepping inside Michael’s German backyard sauna

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2 thoughts on “Is there a better way to seal our sauna floor?”

  1. Love the idea!
    I’m curious if you use water in your sauna or is it electric? Wondering how this would hold up to water being on it.

  2. I use a lot of water in both my sauna hot rooms that each have this floor solution. I’m a big fan of how it seals off and makes waterproof.

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