I've used them on top of tile without anything under them and it's fine. They usually have a backing on them that's supposed to prevent them sliding but they still slide. As long as they have rubber backing you could probably use a construction adhesive on them. Over all they have served their purpose for me.

An underlay is a good idea. It will help with floor temperature and sound. It will help to protect the subfloor from spills and damage.

You as far as fixing them, I wouldn't unless they're moving around. You could use carpet tape to help tiles stay in place.

The construction adhesive isn't hard to remove. The tiles will probably peel up and then use a floor scraper to remove any residual.

Ah, I hadn't thought of tape! (what a bonehead!)

That sounds like a great idea. Any tips on type of underlay? Standard carpet stuff or could I use some of the wood floor underlay tiles that I have left over in my shed?

All good advice. Appreciate it.

I'd use the underlay made for tile carpets. There is a specific kind.

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I recommend carpet tiles from flor.com, I used them to carpet a basement bedroom. They are not dirt cheap, but you can find good deals in sale. They are very durable, come with a built in underlay that is waterproof and has grip. When you’re done with them in your temporary space you could use them in a different part of your house. They cut really easily and install with stickers that link tiles together.

I'm doing a patch of carpet squares in my basement office. Decided to start with duct tape to connect them since I had it on hand. I have to go pick up more squares, but so far they are staying together and not sliding on the concrete.

I appreciate the recommendation.

I'm picking up a pack 5ms (ample) for £25 from some facebook person. That'll do for now. Will likely be going full wood floor (like the adjoining room) when time and money allow.

Yeah I've got duct tape but I'm grabbing some double sided carpet tape (similar stuff it seems) and will secure the corners.

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If you use construction adhesive you're gonna hate yourself when it comes time to remove them

Use pressure sensitive carpet tile adhesive. Roll it on, let it get tacky, then lay your carpet. You'll be able to peel them off later instead of spending hours with the floor chisel

You don't need underlayment unless the boards are all fucked up, if you do use Luan or tri ply

The best part about these is when they get dirty, you can take squares out and wash them off with a garden hose. Great if you have pets or kids. I love them.

I do have kids.

Tbh I might just take the kids out and wash them with the garden hose 😁

You wouldn’t use underlay, they are insulated and slightly soft. If you lay tiles on the underlay, there’s too much ‘give’ and the tiles will be forever popping up and uneven at the seams

This is what I was worried about. Will I've ordered the underlay now and have the tiles, so I guess this will be a learning experience.

I will be sure to share it with your all

You can do the kids and carpet squares at the same time!

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