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Started By
Message
Tile underlayment for cement slab?
Posted on 4/11/18 at 10:14 am
Posted on 4/11/18 at 10:14 am
Is is possible for me to use a tile underlayment such as this one found at Lumber Liquidators to go over old thinset in order to provide a smooth surface for the tile to go over? I've laid tile before but never removed old tile first so I don't have any experience in removing the old thinset. I've read that removing the thinset is difficult and extremely messy so I don't want to go down that route if I don't have to.
I can't raise my floor too much, no more than 1/8" or so.
If this won't work, are there any tips on removing thinset easily? I've read that wetting it first and letting it soak can help. Any truth to that?
I can't raise my floor too much, no more than 1/8" or so.
If this won't work, are there any tips on removing thinset easily? I've read that wetting it first and letting it soak can help. Any truth to that?
7
Posted on 4/11/18 at 10:31 am to TDsngumbo
I removed old before installing new tile. I rented an impact chisel. Was not that bad to get old up.
Posted on 4/11/18 at 10:32 am to TDsngumbo
How many square feet are we talking? If somewhat small, rent a large chipping hammer from HD and a flat blade.
Posted on 4/11/18 at 10:32 am to WPBTiger
How long did it take you to remove the old thinset and how big an area? I'm looking at around 300 sq ft.
Posted on 4/11/18 at 10:47 am to TDsngumbo
quote:
How long did it take you to remove the old thinset and how big an area? I'm looking at around 300 sq ft.
it really depends on how well the previous adhered to the sub floor. Sometimes it just starts coming off easy in big sections, then sometimes it is an absolute pain in the arse.
Posted on 4/11/18 at 10:52 am to TDsngumbo
I removed quite a bit of old tile from my house and most of the thinset broke up and came out with the tiles. I used a small sledge. Just make sure to wear eye, ear, and hand protection. I scraped the remainder off fairly easily with a floor scraper.
I'd start removing the tile and then reassess the situation.
I'd start removing the tile and then reassess the situation.
Posted on 4/11/18 at 10:52 am to NYCAuburn
quote:
Sometimes it just starts coming off easy in big sections, then sometimes it is an absolute pain in the arse.
This makes me so excited to start this project
Posted on 4/11/18 at 11:04 am to TDsngumbo
Do you have a vapor barrier under the slab?
Posted on 4/11/18 at 11:13 am to Jack Daniel
quote:
Do you have a vapor barrier under the slab?
No, can you believe the jackass who built the house didn't put one under the slab?!
Posted on 4/11/18 at 11:13 am to TDsngumbo
Oh boy......
Posted on 4/11/18 at 11:17 am to Jack Daniel
Posted on 4/11/18 at 11:44 am to TDsngumbo
It usually comes up pretty easily. Sometimes a demolition hammer with a wide blade is useful, but I've taken plenty of it up with a manual scraper.
Posted on 4/11/18 at 12:13 pm to Chris4x4gill2
I laid tile for years in high school and college. We had a large manual scraper with a 12 in blade so we could remove old thin set and scrape it clean. We also had 2-3 guys with normal hand scrapers and a box of blades each just chipping away.
There’s no easy way to do this job. Say your prayers that much of it comes off stuck to the tile.
This is literally the thing we’d dreaded the most.
There’s no easy way to do this job. Say your prayers that much of it comes off stuck to the tile.
This is literally the thing we’d dreaded the most.
Posted on 4/11/18 at 1:17 pm to FalseProphet
So what you're saying is to try to scrape the tile up as well in hopes most of the thinset comes up with it? I was just planning on using a sledge hammer to break it up then shovel the pieces up.
What's the best method here? Looks like I'm going to be renting some tools from Home Depot
What's the best method here? Looks like I'm going to be renting some tools from Home Depot
Posted on 4/11/18 at 1:54 pm to TDsngumbo
quote:
I was just planning on using a sledge hammer to break it up then shovel the pieces up.
Flatbar, hammer, eye protection, ear protection, and 27 beers should be enough for 300sf.
Posted on 4/11/18 at 2:23 pm to tenfoe
quote:
Flatbar, hammer, eye protection, ear protection, and 27 beers should be enough for 300sf.
Posted on 4/11/18 at 4:11 pm to TDsngumbo
Did 1,500 sq ft year before last and i should have burned it down first. Turn off hvac, drop sheet walls and ceiling if possible, wet thin set prior to using the hammer drill. 300 sq ft shouldn't be difficult but that shite teases ya, some will just float up and then you hit a ruff patch that will make you cuss like a preacher.
Posted on 4/11/18 at 6:14 pm to TDsngumbo
quote:
How long did it take you to remove the old thinset and how big an area? I'm looking at around 300 sq ft.
It did not take that long but my area was probably about half of what you are dealing with.
Posted on 4/11/18 at 6:47 pm to TDsngumbo
You must remove the old thinset, however do install a crack isolation membrane when installing the new tile.
Posted on 4/12/18 at 9:06 am to Capital Cajun
quote:
You must remove the old thinset, however do install a crack isolation membrane when installing the new tile.
The more I read about those the more I like them. I'll definitely use it when installing the new tile.
I'm wondering if hitting the old thinset would help to loosen it and assist in scraping it off? Any idea if that would work? I'm sorry if that's a dumb question/idea -- I've never removed thinset before so I don't know what to expect.
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