You can purchase an adhesive solvent that will break down the glue making it easier for you to remove.
Chemical removing vinyl flooring adhesive from wood.
The best adhesive removers use citric acid.
If you remove vinyl flooring but the glue remains lodged on the subfloor try this.
Either lift vinyl with a floor scraper or cut manageable pieces to remove as much vinyl flooring as possible.
Cutting in narrow strips makes the task more manageable.
I would try working on small areas at a time by pouring boiling water on the adhesive and letting it sit for about ten minutes.
Then you can scrape it off.
To remove adhesive from a hardwood floor bring a pot of water to a boil.
Ways to get glue off of hardwood floors solvents using chemicals people recommend lots of different ones to soften or eat away at the glue making it easy to mop up.
Next move about 12 inches to the right or left and cut a strip parallel to the first.
Get rid of the glue.
Once the adhesive is loose use a floor scraper to remove as much of it as you can.
When it comes to getting glue and adhesive off of your hardwood floors there are three major fields of thought.
For stubborn vinyl and glue that is stuck to the floor use a heat gun to soften the plastic flooring and adhesive.
In fact they re similar to paint removers.
Apply the solvent and let it rest for an hour before attempting to remove the glue once more.
Gently use a floor scraper to remove the rest of it.
Soften the remaining adhesive a small section at a time with a heat gun or clothes iron.
Hold the heat gun or clothes iron a few inches away from each section until the adhesive softens.
Use the utility knife to cut straight down the middle of your vinyl floor.
There are chemical adhesive solvents on the market but my concern is that they would soak into the hardwood.
Adhesive removers soak into the vinyl flooring glue and turn it back into its original paste of liquid state.
Typically vinyl flooring is perimeter installed meaning there s no glue or adhesive in the middle of the floor.
There are specific products geared to removing vinyl flooring adhesive.
Remember that the solvent is filled with various chemicals so make sure that the area in which you need to apply it is well ventilated.
The off gassing of vinyl flooring chemicals will be a painstakingly slow process that can progress for some time after the installation the duration of time will depend on a variety of factors such as the number of chemicals released into the air the ventilation in the space and the size of the environment that is impacted by the off gassing.
Soak some old towels in the water and then place them on the adhesive.