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Question DetailsAsked on 10/29/2011

Commercial carpet glued down two days ago and it has many bubbles. Can contractor roll these out and inject more glue or is this a redo?

This is a quality commercial carpet with unitary backing. They used nontoxic glue. The building and slab are over 20 yrs old but installer said slab had a lot of moisture. It use to be a dry cleaners and had a painted floor. They had to do a lot of floor prep and didn't allow the skim coating to dry more than an hour or two. There seems to be bubbling over a lot wider an area than just where they did repair work. What would cause this and what do I need him to do to fix it?

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As a installer for over 30 years and coming across many senarios I myself would not gluedown the carpet over a painted floor! you asking for problems. Yes you could have put a sealer over the painted floor but you still have a chance of adverse effects of the conbination of floor paint , the sealer, and glue,not being compatible with each other. The paint should have been stripped. Can the carpet be pulled back in sections? it depends how well the carpet adhere to the floor! strip the fioor than reglue? test an area first see how well the carpet adhears! Iknow it sounds like a lot of work good luck! Pat

Source: Pat, All Carpet Repair

Answered 6 years ago by patsnyder

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You are asking a question that has a lot of scenarios around it with the above question.

Let's assume the paint was removed and good stable concrete was bonded too. Also let's assume that the moisture level was proper for this installation (5l/bs or 75 RH). Unitary backed carpet in general does not breathe very well. As the adhesive dries it creates gases which will create bubbling. These gas bubbles can be steamed down and rolled which typically works - sometimes injecting more glue is needed but not often. Lee's Unitary installation instructions specifically speaks to the flooring contractor coming back in two days to relieve these bubbles.

Now if you have moisture this is another issue. Your adhesive might not dry properly and if it does, could be broken down in the future due to vapor emmissions and salts coming through the concrete. Your flooring contractors duties for a professional installation is to test your concrete and address any moisture concerns PRIOR to install or they own the issue. Every installation instruction speaks to this.

You then could have a bigger problem talking about the floor used to be a cleaners. They used harsh chemicals that could have soaked into the floor which will create a bond issue. The only method of correcting that issue to installed a glue down product would be to mechanically remove a that compromised concrete by means of shotblasting or grinding the surface. However, we do have one manufacturer of carpet tiles (Interface) that does make a floating application of product along with a few floating SVT or planks that could float over an compromised floor.

Easiest fix is just typically bubbling. Moisture testing and bond tests prove other issues than you are talking about a large problem.

If you are in the VA area and need assistance you can contact Cherry Carpet and Flooring - Ross Cherry.

Source: http://www.cherrycarpet.com

Answered 7 years ago by Ross




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