I’m installing new laminate on a bathroom and kitchen countertop that have existing laminate on them. My plan is to sand with 60 grit on an orbital to rough up the old surface. If there are any better ways that have been tried and tested I would be open to suggestions.
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Thats the way I've always done it with good results. Just be sure to clean the surface really well before you start inhaling that contact cement : )~
Be well
andy
True compassion arises out of the plane of consciousness where I "am" you.
http://CLIFFORDRENOVATIONS.COM
I re-did an old countertop (ca. 1950's) in my old house in exactly the manner in which you are describing. It was square at one end and had a full radius on the other i.e. it was a peninsula with one one end up against the wall and the other end was rounded. The edges were square. I did it mostly as an experiment with the intention of pitching it out if it turned out bad. I sanded it to rough it up, wiped it down with laquer thinner to remove dust and contaminants, and used a full scuba tank (it was the only heavy round thing at hand) to press roll out the top surface after spreading the adhesive and laying the new formica down. The side surfaces were done in the same manner although I used tape to keep them tightly in place while the adhesive set up. It worked fine, even around the rounded end which is where I could see the biggest potential for problems.
We sold the house a couple of years later, but the counter had not shown any signs of falling apart. for all I know, it is still in service. Be sure to wear a resperator or dust mask while doing the sanding/roughing up.
Old flooring may have asbestos in it. If sanding it, you could generate a mess of dust. Block off the rest of the house with visqueen and tape. Use a HEPA filter for breathing. I'd do a half-face air-purifying respirator (about $50) at a minimum. NOT the little paper mask (4 for $3) for spraying paint.
In commercial renovations I've has great success with sanding old laminate. I normally use a belt sander with 80 grit it takes off the material suprisingly fast. As a matter of fact, you have to move very quickly so you don't go too deep. I repair any chipped sections with Bondo and prime those areas with a light coat of contact after smoothing.
Turtleneck
the only miracles I've ever produced are waiting for me at home