Replies

1. 
   Westchester | Feb 10, 2010 06:46pm | #1

   No - leave the original finish -

   It will hold up to general wear -

   SA

2. 
   hammer1 | Feb 10, 2010 07:50pm | #2

   The same use warnings go with just about every film finish. Polyurethane wouldn't be any different and, likely, much less attractive.

3. 
   SteveSchoene | Feb 10, 2010 09:16pm | #3

   You can put an oil based varnish over the lacquer. It will add resistance to spills, and a bit of resistance to scratching. But, I wouldn't use a polyurethane varnish due to concerns about how well it will adhere. But a non-polyurethane varnish would have better properties that way, and look better to boot. You do have to first thoroughly clean the table--first with a soap solution (or TSP) to get rid of water soluble dirt. Remember with lacquer not to keep it wet for long. Then thoroughly wipe it down with naphtha or mineral spirits to remove oily dirt. Only AFTER cleaning should you sand it with 320 grit paper to give a good tooth for the varnish to grip.

   You still shouldn't place hot objects on it. That's what trivits and hot pads are for. And, consistant use of coasters would eliminate the problem to begin with.

1. 
   floormeister | Feb 11, 2010 01:23am | #4

   when in doubt about compatibility or possible contamination,i go with unwaxed shellac or 'universal sealer' by parks,after that i go with poly if i choose to.But..it is advertised as compatible with water and oil poly,you may have to call to see if alcohol reacts with lacquer.I've used it in your situation just fine,but is it ok'd by parks..thats important..hope this helps rob

4. 
   prcrlc | Jul 23, 2012 03:07pm | #5

   You can put oil-based poly over lacquer if you lightly sand first. Adhesion is okay but not great and heat might compromise adhesion.  You might consider sanding off the lacquer and using industrial strength poly. In any case, use trivets.

   I often have glass cut for side tables that see a lot of use since I find coasters a PITA.