Levelling compound for particle board subfloor

[r3nov8or]

Yeap, that's my concern too, but there is only way to find out
The leveller see to be quite flexible - i've jumped on the leveller underflooring with all my might, trying to flex them when I land, and the leveller hasn't cracked.

I'll update this thread with how it goes. Currently acclimating the wood.

Put a nail into it, leaving the head proud the board thinkness, see what happens. Then simulating minor board movement, pull it out a fraction, see what happens...

[aeroden]

Started the nail/gluedown. I'm doing full trowel glue spread + stapling every ~20cm. Both Makita 16ga brad nailer and Bostich flooring stapler happily hammer their metal both in just chipboard or chipboard+concrete leveller. Didn't have to adjust air pressure or anything when moving between just chipboard or chipboard+leveller. So far so good, no cracks observed (and glue should add extra layer of protection to hold leveller together if it ever cracks).

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[aeroden]

And it's all done!
Love the result. Very sturdy floor.

Ended up sanding everything with Bosch GET 75-150 - the room is to small to fiddle with the big drum sander and me lacking experience with the latter, I didn't want to risk it. Before sanding I cleaned all the gum veins with wire brush and filled them all with Loctite 116294114ML quick repair epoxy - it has self-mixing nozzle so is really mess-free and is ready to send within an hour. To my big surprise, all sanding took less than two hours with that wonderfull sander, and virtually dust free! First pass on turbo mode with 80grit, and another light pass with 120 on regular mode. Cubitron sand paper rocks - I only used 3 pads for the 80 grit sanding, and two 120 grit pads.

After that I cleaned it al with Rubio wood cleaner (feels, smells, and behaves like your low-odour turps but x5 the price), though I used only 1/4-1/3 of the bottle for my 9sqm room, then spread rubio using plastic epoxy spreader, worked it in with white sabco pads + applicator from bunnings and wiped-off/buffed with more white pads and paper towels. Took 7 days until the smell went down to "livable" levels. 150cc of ruio oil2c + 50cc of hardenere is all I needed with still quite a bit left.

Later one my wife lefts a couple of specs of enamel when touching up the skirting boards and it's no problem with rubio - scrape the paint of with a plastic scraper, clean between the grain with brass wire brush, quick topical hand sand with a 240grit sand paper and then just rub in a drop of rubio (no hardener needed) - next morning it's impossible to spot where the repair was.

Another bedroom is on the way!

Photos are below and the video is here: https://imgur.com/a/JQh3dB3

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