Slope your hot room floor with the “Ben Square” sleeper method, and enjoy a water fight in your sauna hot room

Every once in awhile, through sauna building user engagement, I am “wow’ed” with an enhancement to the sauna building methods detailed in my ebook.

User engagement with other sauna builders has allowed me to cross pollinate different ideas and methods.  No ego, but with intent to help the next guy down the road.  And just as with the Zen and Art of Motorcycle Maintenance, we have the author drawing parallels to understanding the mechanics of his motorcycle as empirical learning towards other aspects of life, I have enjoyed discussing different approaches of the nuances of sauna building with others as crazy as I am.

Because my ebook is in Google doc. format (vs. printed), ever once in awhile we pick up on a better way to do an aspect of the sauna build.  And thanks to the non patent process of copy  & paste, I am able to share the enhancement with the next sauna builder coming down the pike.

The Ben Square Sleeper Method is a better way to slope a hot room floor.

With my ten or so sauna builds, I have always run 2x stock through my table saw to create sleepers on an angle through my table saw, sloping down to the drain, like so:

A saunatimes exclusive: firing strips to pitch floor to drain. Prep for durarock and skim coat.

But let’s check out Ben’s sleeper method:

Welcome Ben:

“Like any other engineer, I can’t help tinkering with a good design. Here is a picture of my floor slope method. I will put reinforcements at the durarock edges as well. Pieces are ripped in 1/8″ increments. Reinforcements for the edges of the durarock will also be added.”

The Ben Square Sleeper Method is a better way to slope a hot room floor.

By adjusting our table saw to rip 2x stock in decreasing widths, we create a uniform slope to the drain.

Glue and screw sleepers at decreasing widths to drain


Then cut durarock and mark sleeper locations:

Marking sleeper locations on durarock


See how an ordained engineer uses a T square to transfer marks onto durarock?:

Transferring sleeper locations with a T square (note mason jar ice water on tile saw so Engineer maintains 38% hydration through process).

And an engineer doesn’t need to scratch his head to think about how to mark sleepers for small durarock cuts:

Holding durarock vertical to get sleepers marked

Now this is a kick ass sloped floor glued and screwed and ready for the vinyl cement skim coat stage:

A perfectly sloped and supported sauna hot room floor, glued, and screwed and ready for a skim coat water seal (vinyl cement repair: sauna building secret #7).

A well built sauna hot room should be such that if kids want to have a hot room water fight, an adult need not have to say “Don’t do that!”


UPDATE: Feburary 2021:

Let’s check in with Mike from High Intensity Health. He has embraced the Ben Square Method, and here he is in action.

Mike applying the Ben Square method for his new sauna build hot room floor, sloped to drain
Mike’s cement board overlay in his sauna hot room

2 thoughts on “Slope your hot room floor with the “Ben Square” sleeper method, and enjoy a water fight in your sauna hot room”

  1. Thanks, Glenn!

    Just finished putting sleepers in (and filling empty space with concrete). Any tips on
    how to seal drain when skim coating? should I pour some of that vinyl repair cement around it
    I have it now sitting just like the last video on this page.

    Secondly any tips on finding that vinyl repair cement in Canada? Home Depot has it in small 2Gal buckets..
    can i use something else (waterproofing repair cement) ?
    Thanks, your book has been so great !!

  2. Hi Matt,

    glad my ebook has helped you along. The best way to seal the drain when skim coating is some blue tape laid down tight against the drain cap. Then, after you apply, run a wet sponge to wipe the vinyl cement around your drain. Try not to work it too much or have too much product around there… less is more in that dept.

    Vinyl Cement Repair sourcing in Canada: Well, what I would do is google those three words, hit images, and take a screen shot of the blue and yellow bag and circle around with suppliers to get that exact formulation. The 40# bag is all you’ll need to seal off your entire hot room. Run that trowel tight against your cement board (rough side out) as detailed in the book.

    And sauna on Matt!

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