Q&A: Polyurethane|What type of Polyurethane should I use to clear coat a bar top?
Posted 21 February 2011 by adminWelcome to my blog,This blog is about how do you paint furniture & buy antique furniture paint.
Here you can choose to skip this, because not is Polyurethane,also not about the contents of the computer help,But ,a little bird told me, it is classic:The world makes way for the man who knows where he is going.Never put off the work till tomorrow what you can put off today.God made relatives; Thank God we can choose our friends. .Question–: What type of Polyurethane should I use to clear coat a bar top?
I’ve built a bar for the game room and I am about to clear coat the top. It is a stained wooden top and I am wondering what to use to clear coat it. I would like to make it look like a bar top at a restaurant but the epoxy way is too expensive. I’ve used Minwax polyurethane on a table I have. Should I just do like 7 coats of Minwax or is there a better way to do it? Preferably something I can get from home depot.
The answer in the following: (Hint: The answer is not necessarily.)
Answer by Hawaii sponger
your way is fine.
Recommend gloss or high gloss oil-base poly. Yeah- plenty coats…until you get sick of it.
Dont entertain the idea of less than Gloss. Further oil is more durable – so that combo will get you closest to the bar look without doing a 1/4″ of resin and all that.
Answer by livn4themin
I like the spar urethane – but still takes several coats, and is what I used on my oak butcherblock counter top. I used 4 coats, three years ago, they are still like new.
Answer by krn001
You can oil poly the finish, to achieve a resin look that equates to as many as 50 coats. The epoxy purpose is mainly to embed coins & not feel them. 4 -5 coats is more than enough.
Answer by Tom C
I agree with “livnthe” – spar urethane is waterproof. It is also referred to as marine varnish or marine poly/urethane and it is used in marine (boating) applications. It’s best to use a waterproof clear coat because the bar top will likely have lots of water on it…from spills, water rings on glasses and mugs, from wiping cloths, etc. Regular polyurethane is water resistant but it will not hold up to the kind of regular soakings that a typical bar top will encounter. Apply multiple coats, 3 or 4 initially, for best protection and re-apply regularly…at least once a year.
Answer by ozzie s
Ok, what I have found that works super good is Min Wax Helmsmen spar urethane. This stuff is used on boats,water skis etc. Just do the FIRST coat with a 60/40 mix, of 60% urethane and 40% thinner. This will seal the wood and make the next coat go even and smooth. Just lightly sand ,after the first coat with a 300 or 400 wet or dry sand paper and use it dry. Sand just enough to get any dust particles off of the finish. Now you can do a 50/50 mix or just go with straight urethane. Just sand the rest of the coats with either 400 or 600 wet or dry and use it dry. That is up to you. Depends on the dust particles that will get on the finish while it is drying. Remember to keep the sand paper clean and wipe the surface after you sand over it the first time and every time after. This seems like a lot of work ,because the urethane has to dry, but in the end it will look awesome. For a bar top 3 maybe 4 coats should do it. Then when you reach the look you want,wax the top with min wax finishing wax, and do this every once in a while after using the bar. Good luck,it will look great.
Answer by jimd52936
valspar marine polyurethane will do the trick
Know better? Leave your own answer in the comments!
Polyurethane
Hi. Long time no see,welcome,In the blog: best paint for furniture or buy antique furniture paint.
Q&A–: Can I reapply polyurethane in small spots… or do I have to strip the whole thing and start fresh?
We just moved into our new house…. We have lovely oak cabinets… unfortunately the previous owner used pledge on them for 5 years (I dont know why people refuse to read instructions). They are covered with wax build up. We used Murphy’s oil soap to clean them. It helped a great deal, but around the edges and scrolling it still has a layer of wax. If I sand the edges can i spot reapply the polyurethane or do I have to strip the whole cabinet door?
The answer in the following: (Hint: The correct answer provided by the users, does not guarantee the right.)
Answer by johncob
Rub gently in the mouldings with white spirit & toothbrush.
Answer by Wine and Window Guy
Take the opportunity to strip the doors and add some new stain. Then coat them how you want. You will have re faced your cabinets in one weekends worth of work!
That’s what I would do anyway.
Answer by Tim W
I would suggest trying an experiment on one edge. Clean it with mineral spirits or use wax and grease remover from a paint store. If the edge is grimy or soiled or if you just fell compelled to sand, rub the edge down with a fine grade of steel wool (going with the grain). I don’t recommend sanding the wood because it may end up a different color. Then put on a couple thin layers of Minwax spray polyurethane. It blends in pretty well and comes in satin, gloss and semi-gloss. Rub with super fine steel wool or 320 grit sandpaper between coats.
If this works repeat it on the other edges. Avoid both the urge to spray on a thick coat and polyurethane that needs to be brushed on.
There may be another option that’s feasible but I’m not that familiar with it. After the same preparation is done there are some oil finishes that can be rubbed on to worn areas. I’ve seen wood with several coats applied that looks lustrous and well protected.
Personally I’d go with the polyurethane since it’s a known entity and it was good wear and water resistance characteristics.
Answer by sshorekennels
You will have to remove the wax with a solvent before applying polyurethane. Poly will not stick to wax. You can apply urethane in small spots but it will probably show when dry. I would be cautious about sanding. The oak may only be a thin veneer that you do not want to sand through.
Add your own answer in the comments!
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The following not about Polyurethane,also not about the contents of the shoe blog,But ,a little bird told me, it is meaningful:Friendship is like earthenware: once broken, it can be mended; love is like a mirror: once broken, that ends it. (Josh Billings. American humorist)A friend is never known till a man has need.When two‘s company, three‘s the result!. High magnification SEM image of open cell polyurethane foam
Refinement :

Image by CORE-Materials
DoITPoMS, University of Cambridge
If a gas is injected into a liquid it forms a cellular foam structure. When a thermoset prepolymer of low viscosity is foamed, the polymer can drain from the cell walls (driven by surface tension) before it sets at the cell edges, leaving an open-celled foam. The cell edges have three concave sides, and some remnants of collapsed cell walls can be seen at the cell edges.
System
Polyurethane (PU)
Composition
Not specified
Reaction
Processing
Applications
This open celled polymer foam is a compliant space-filler, used for padding and in furniture. It may also be used as a precursor in processes such as the two-stage casting of a metal foam.
Sample preparation
The foam has been sputter-coated with gold, to give a conducting surface
Technique
Scanning electron microscopy (SEM)
Contributor
J A Curran
Organisation
Department of Materials Science and Metallurgy, University of Cambridge
View micrograph in DoITPoMS website
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Post Details
- Post Title: Q&A: Polyurethane|What type of Polyurethane should I use to clear coat a bar top?
- Date Posted: 21 February 2011
- Author: admin
- Filed As: Furniture Paint
- Tags: clear, coat, Polyurethane, Polyurethane|What, should, type
- Shortlink:
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