How To Remove Old Glue From Concrete Slab? - Flooring - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Flooring

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 12-15-2011, 05:40 PM   #1
Newbie
 
Join Date: Dec 2011
Posts: 4
Rewards Points: 10
Question

How to remove old glue from concrete slab?


My friend's hot water heater sprung a leak and he is having to replace the flooring because the water sitting on the hardwood caused mold.

We aren't sure why a pan was never placed under it.

He got the hardwood up but now we are trying to figure out how to get the glue off the concrete (to be sure all the mold is 100% removed since there is mold on/in the glue as well).

Does anyone have any tried and true means of removing old glue from the concrete so we can put down new flooring?



Thanks

Advertisement

bulldogrsp61 is offline   Reply With Quote
Old 12-15-2011, 06:17 PM   #2
Pro Flooring Installer
 
rusty baker's Avatar
 
Join Date: Feb 2009
Location: SW Missouri
Posts: 4,011
Rewards Points: 2,292
Default

How to remove old glue from concrete slab?


Scrape it.

Advertisement

__________________
The ads in my post are there without my permission. I do not endorse any of the products.
Semi-Retired Installer
Installing since 1973
rusty baker is offline   Reply With Quote
Old 12-15-2011, 06:18 PM   #3
Tileguy
 
Bud Cline's Avatar
 
Join Date: Mar 2006
Posts: 10,464
Rewards Points: 2,576
Default

How to remove old glue from concrete slab?


Try a 3-4 inch razorblade scraper. Sometimes called a wallpaper scraper. They have a long (18") handle good for "more power".
__________________
XXX
Bud Cline is offline   Reply With Quote
Old 12-15-2011, 06:24 PM   #4
Newbie
 
Join Date: Dec 2011
Posts: 4
Rewards Points: 10
Default

How to remove old glue from concrete slab?


Thanks for the quick replies ...

Are elbow grease and muscle the only way to do it?

Is there any kind of solvent or something I might try to at least soften it up a bit?

Someone suggested paint thinner in a Google search. Anyone have any experience with that?
bulldogrsp61 is offline   Reply With Quote
Old 12-15-2011, 06:38 PM   #5
Tileguy
 
Bud Cline's Avatar
 
Join Date: Mar 2006
Posts: 10,464
Rewards Points: 2,576
Default

How to remove old glue from concrete slab?


Quote:
Is there any kind of solvent or something I might try to at least soften it up a bit?
Nope, no chemicals for the most part especially oily paint thinner.

The use of chemicals in most cases will leave a residue that can compromise the effect of future adhesives. The chemical would have to be somehow neutralized and that isn't always possible. Paint thinner won't cut that adhesive all that well anyway.
__________________
XXX
Bud Cline is offline   Reply With Quote
Old 12-15-2011, 06:45 PM   #6
Newbie
 
Join Date: Dec 2011
Posts: 4
Rewards Points: 10
Default

How to remove old glue from concrete slab?


Quote:
Originally Posted by Bud Cline View Post
Nope, no chemicals for the most part especially oily paint thinner.

The use of chemicals in most cases will leave a residue that can compromise the effect of future adhesives. The chemical would have to be somehow neutralized and that isn't always possible. Paint thinner won't cut that adhesive all that well anyway.
I was afraid you were going to say that.

What about like a heat gun or something? Would that help?
bulldogrsp61 is offline   Reply With Quote
Old 12-15-2011, 06:52 PM   #7
Tileguy
 
Bud Cline's Avatar
 
Join Date: Mar 2006
Posts: 10,464
Rewards Points: 2,576
Default

How to remove old glue from concrete slab?


Quote:
What about like a heat gun or something? Would that help?
All heat will do is make things gummy and make things even worse.

How bad is this glue anyway?

Scrape it, that's all there is to it, scrape it. It isn't a big deal, you are spending more effort trying to get out scraping it than it would take to just do it.






Kids.
__________________
XXX
Bud Cline is offline   Reply With Quote
Old 12-15-2011, 07:00 PM   #8
Newbie
 
Join Date: Dec 2011
Posts: 4
Rewards Points: 10
Default

How to remove old glue from concrete slab?


Quote:
Originally Posted by Bud Cline View Post
All heat will do is make things gummy and make things even worse.

How bad is this glue anyway?

Scrape it, that's all there is to it, scrape it. It isn't a big deal, you are spending more effort trying to get out scraping it than it would take to just do it.






Kids.

Sure seems like it .. but we're not working on it until tomorrow or the weekend .. so I've got some time to try to work smarter instead of harder.

We figured it would be elbow grease but if there IS a way to make it easier, no effort, energy or time is wasted asking
bulldogrsp61 is offline   Reply With Quote
Old 12-15-2011, 07:05 PM   #9
Tileguy
 
Bud Cline's Avatar
 
Join Date: Mar 2006
Posts: 10,464
Rewards Points: 2,576
Default

How to remove old glue from concrete slab?


Yow well take it from a guy that has been scraping those damned floors for thirty-five years. Trust me my friend I have already blazed that trail and settled on elbow grease as the most efficient and intelligent means of removing the crap. And even then you aren't going to remove all of it.

How about a picture of this Great Wall of China.

Rusty has more time at it than I do and he has already said the same thing.

Scrape it and move on.
__________________
XXX
Bud Cline is offline   Reply With Quote
Old 01-01-2012, 10:34 PM   #10
Newbie
 
Join Date: Jan 2012
Posts: 1
Rewards Points: 10
Default

How to remove old glue from concrete slab?


The glue from 12 year old double-sided carpet tape stood up to every solvent we tried, and handscraping was pointless. Our solution was an oscillating multi tool (bought a demo Rockwell, but Dremel and others make nice ones too) with a scraper blade. It was like shearing sheep. (Gummy, sticky sheep, but it worked well, fast, and easy).
Bruce G is offline   Reply With Quote
Old 01-01-2012, 11:32 PM   #11
Pro Flooring Installer
 
rusty baker's Avatar
 
Join Date: Feb 2009
Location: SW Missouri
Posts: 4,011
Rewards Points: 2,292
Default

How to remove old glue from concrete slab?


If you sprinkle cornstarch on it, it makes it easier to scrape.

Advertisement

__________________
The ads in my post are there without my permission. I do not endorse any of the products.
Semi-Retired Installer
Installing since 1973
rusty baker is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tiling over VAT on concrete slab ajackson716 Tiling, ceramics, marble 5 09-22-2011 08:06 AM
Removing basement tile and pouring concrete slab tondar Building & Construction 12 11-05-2010 12:28 PM
How to cut a hole in a concrete floor slab tomseeley General DIY Discussions 7 06-10-2009 03:32 PM
Remodel over sloped concrete slab PSL_Hokie Building & Construction 11 07-11-2007 06:14 PM
cracks in concrete slab causing home sale to fall though! help! bp13 Building & Construction 14 07-04-2007 01:32 AM




Top of Page | View New Posts