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February 19, 2010, 01:06 PM
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#1
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Brand New Member
Join Date: Feb 2010
Posts: 8
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Wrong glue on hardwood floor
Installed a small section of brazillian redwood natural hardwoods with engineered flooring glue (water based) and it cupped. we stopped and switched to urethane based and the rest is fine. my question - is there any hope for the small section that is cupped to return to normal or improve somewhat? we know its not a moisture issue from the slab so we are hoping the moisture/agent from the engineered flooring glue will evaporate and the cupping will reside.
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February 19, 2010, 01:54 PM
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#2
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Tile Expert
Join Date: Mar 2008
Location: NW Arkansas
Posts: 2,369
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Re: Wrong glue on hardwood floor
I would think the chances of it returning to its original state = slim to none.
I would just replace it.
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February 19, 2010, 02:12 PM
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#3
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Brand New Member
Join Date: Feb 2010
Posts: 8
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Re: Wrong glue on hardwood floor
I guess i should qualify this a little more. I dont expect it to return to normal just didnt know if it would improve a little as the moisture from the glue evaporates. it's just a small section in my eating area that can be covered with a rug anyhow. Also, from a techical standpoint was it the water/moisture in the glue that caused the issue or something else that is in engineered wood floor glue (bruce everbond) that causes the problem with natural flooring.
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February 19, 2010, 07:08 PM
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#4
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Inspector Floors
Join Date: May 2006
Location: Minneapolis, MN.
Posts: 5,558
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Re: Wrong glue on hardwood floor
Do you mean solid when you say natural?
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February 19, 2010, 07:15 PM
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#5
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Brand New Member
Join Date: Feb 2010
Posts: 8
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Re: Wrong glue on hardwood floor
Peter Kodner said
Do you mean solid when you say natural?
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Yes, sorry. 3/8
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February 19, 2010, 07:43 PM
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#6
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a Floor Pro
Join Date: Jun 2007
Location: Ohio
Posts: 1,764
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Re: Wrong glue on hardwood floor
hoosier said
Yes, sorry. 3/8
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You said that you used engineered flooring glue, so is it a 3/8" engineered?
Tia
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February 19, 2010, 08:02 PM
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#7
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Brand New Member
Join Date: Feb 2010
Posts: 8
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Re: Wrong glue on hardwood floor
no it is a solid hardwood and a 10x10 area was put down with an engineered flooring glue
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February 19, 2010, 09:27 PM
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#8
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a Floor Pro
Join Date: Jun 2007
Location: Ohio
Posts: 1,764
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Re: Wrong glue on hardwood floor
hoosier said
no it is a solid hardwood and a 10x10 area was put down with an engineered flooring glue
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So, 3/8" solid - did you use the manufacturer specified glue? What brand is the floor? Is it only the area where you used the first glue that is affected?
To answer your original question, once something cups, there isn't usually much hope for it to return to the original state. However!! ... I lived for many years in a 100+ home when married to my ex-husband. One Friday, we were getting ready for a weekend of camping, and I filled a five-gallon jug full of water and sat it next to the wall with the other gear. We had old, solid oak baseboards about 9" high. I didn't realize that the jug had a leak, and the next morning, the water was all in the floor and mostly the baseboard. The base was curved out for about a three foot span, bowed a couple inches off the wall. I was so distressed! We went camping for the weekend, and when we came home it had dried out and went right back to normal. So, you never know!
Tia
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February 20, 2010, 07:56 AM
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#9
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Brand New Member
Join Date: Feb 2010
Posts: 8
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Re: Wrong glue on hardwood floor
FlooringGirl said
So, 3/8" solid - did you use the manufacturer specified glue? What brand is the floor? Is it only the area where you used the first glue that is affected?
To answer your original question, once something cups, there isn't usually much hope for it to return to the original state. However!! ... I lived for many years in a 100+ home when married to my ex-husband. One Friday, we were getting ready for a weekend of camping, and I filled a five-gallon jug full of water and sat it next to the wall with the other gear. We had old, solid oak baseboards about 9" high. I didn't realize that the jug had a leak, and the next morning, the water was all in the floor and mostly the baseboard. The base was curved out for about a three foot span, bowed a couple inches off the wall. I was so distressed! We went camping for the weekend, and when we came home it had dried out and went right back to normal. So, you never know!
Tia
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Not on the section that cupped. Bellawood Brazillian Redwood.
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February 20, 2010, 11:06 AM
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#10
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Inspector Floors
Join Date: May 2006
Location: Minneapolis, MN.
Posts: 5,558
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Re: Wrong glue on hardwood floor
I see a couple issues. Although 3/8 inch solid may be glued, it will react to sudden changes in MC change due to the thickness, as opposed to a 3/4 material. The moisture in the glue would certainly be sufficient to have caused the cupping you are seeing. The good news is solid will release this extra water from the adhesive and should improve in appearance. No guaranty it will ever completely disappear, but hopefully it will be okay visibly.
What cannot be determined without seeing it myself if you have encountered edge crush where the wood cells have been compressed beyond the ability to recover.
My experiences inspecting 3/8 solids is an inordinate amount of warping, namely bow, twist and crook. For this reason alone I would always recommend a nail down install of this gauge material. I honestly am of the opinion that all solids are better off nailed and would only recommend gluing an engineered product. But then again most of the folks here know I do not recommend engineered woods at all!  As an aside, I a big fan of site finishing as well. 
Hoosier, I am curious what you did to determine you have no moisture concern with the slab.
Last edited by Peter Kodner; February 20, 2010 at 02:28 PM.
Reason: typo
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February 20, 2010, 01:51 PM
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#11
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Brand New Member
Join Date: Feb 2010
Posts: 8
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Re: Wrong glue on hardwood floor
i cant say either way other than basing it off the floor i laid down 15 yrs ago without any type of barrier (engineered flooring) and it never warped or any issues. so me and a relative have been ripping it up for weeks now on the side. scraping the old glue up the old fasioned way with a hammer and a sharp putty knife. he laid down a small area with the engineered glue and immediately it started to cup. we switched glue and continued on and the pieces with the manufacturers recommended glue are flat as they should be so we know the problem is the glue. just hoping i get some flattening and it looks like it has some with the warm summer weather this weekend in atlanta.
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February 22, 2010, 01:41 PM
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#12
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a Floor Pro
Join Date: May 2009
Posts: 34
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Re: Wrong glue on hardwood floor
Didn't realize anyone was still making that thin solid...Like Peter said, it's extemely sensitive, and cups at the slightest moisture change. Bruce Natural Reflections (5/16") was around for a long time, and I know of a few manufacturers that tried to come out with a competing product, but the cupping claims were through the roof. Even when stapling-down, if you look at Bruce's installation instructions, they required a plastic vapor barrier go down first, just for this reason.
The water-based adhesive was definitely the culprit, and you might see some slight improvement, but it's been my experience that these thin floors, once cupped, tend to stay that way.
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March 7, 2010, 10:08 AM
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#13
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heritagefloorandstair .com
Join Date: Mar 2010
Posts: 8
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Re: Wrong glue on hardwood floor
It may flatten out a little but dont expect miracles. The solid hardwood absorbed the moisture in the adhesive and thats what caused the initial cupping.
Lumber liquidators has been selling 3/8" solid exotics for years now. No offense but its terrible quality and has gotten worse over the years. We will no longer install it. often times its slightly cupped coming out of the boxes!..
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