We removed a wooden dance floor that was glued to concrete with liquid nails. How do I remove the liquid nails that is all over the concrete floor? Has anyone had success with heat, mineral spirits or any other remover product?
Removing glue from any surface is a thankless task. You will not be able to return the floor to an as-built state. You're going to have to cover it with something.
You're going to have to dissolve it and scrape it. And it's going to be a heck of job.
Some expert google-fu has yielded Baby Oil as a potential solvent. Other suggestions were mineral oil.
However, I think a better solution would be to get a floor sander with a grinding pad and sand it off. Remember to wear a dust mask.
From the Liquid Nails faq:
How To Remove LIQUID NAILS Adhesive Products from Building Materials
In general, LIQUID NAILS construction adhesive and caulk products can be scraped off when they are softened either by:
- Heating above 140°F with an electric heat gun or blow dryer
- Coating the adhesive with petroleum jelly or mineral spirits for several hours to several days (NOTE: Mineral spirits are not recommended for tub surrounds, whether vinyl, plastic, painted or varnished.)
I had liquid nails all over my walls for my steps leading downstairs after I tore out the fake brick. I am more than sure that the above answers will work but I like free and I like hitting things.
sharp chisel and hammer.
Time it took me to do entire stairs:
about 1 hour.
Just keep the chisel flat so it doesn't take out any chunks of concrete, wear gloves, goggles if you want, I found swinging down worked best. I also found that giving the chisel kind of a constant tap was more productive than killing it. Also they sell scrapers that you can hook up to your compressor if you have one.
Things not needed:
chemicals, gas mask, heating elements.
Benefits of doing it this way:
- Wife won't yell at me for buying new tool
- Wife won't yell at me about the dust
- Wife won't yell at me about using chemicals in the house
- House will not smell of dust and chemicals for a day.
Negatives of doing it this way:
- Wife will yell at me because I left the scraps of liquid nails laying on the steps.
I'm sorry for the delay but wanted to provide an update. When the dance floor was removed, there was a heavy amount of liquid nails covering about 500 sq ft. We had to remove it in order to lay new tile. We tried chipping it, which worked but took a lot of time. The best approach was purchasing a bottle of adhesive remover from Home Depot-- it's stated purpose is to remove the tacky adhesive from sub floors when re-tiling (think of pulling up peel and stick tiles, you must clean the floor prior to installing new tile or it just won't stick). This stuff worked wonders on it, softened it up and it could easily be scraped away. It took two bottles and cost $20.
Thanks all for your expertise, advice and comments!
I've used Goof off professional for small areas, but its too toxic for a large area.
Diamond brush buffers will wear down the adhesive and even out the floor. They can be used wet to keep the dust cloud to a minimum.
This is available as a rental at a familiar big box store and is paired with a floor buffer. A shop vac and dust mask HIGHLY recommended.
I'm told WD40 will dissolve liquid nails.
I'm removing carpet in the basement and replacing it with laminate flooring. The carpet is held down with tack strips glued to the concrete. The adhesive appears to be Liquid Nails or PL400 or something of that nature. Yes, mineral spirits will soften it, but it's a mess and very time-consuming. Even slower than that is the use of a heat gun. Best method so far: Pry off the tack strips with a Wonder Bar, and use a brick chisel (3 inches wide) to remove the majority of the adhesive, followed up with an angle grinder to remove the remaining residue and smooth the area. The angle grinder alone does work, but sets off the smoke alarm and goes through a lot of discs. Good luck.
Another option: use a cement grinder (ex: cement grinding wheel on an angle grinder). If you don't put too much pressure on it you won't grind down "too much extra" of the cement underneath. Need to be gentle...