Liquid Deglosser vs. TSP


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Old 11-11-06, 08:20 AM
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Liquid Deglosser vs. TSP

I am converting my trim from oil to latex and would prefer not to hand sand all of it. I know that liquid deglosser is much less labor intensive but I am concerned about the odor. It has been suggested that I use TSP as an alternative to liquid deglosser. I am wondering if this is wise. I plan to prime and apply 2 coats of latex semi-gloss. Your opinions are greatly appreciated.

JT
 
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Old 11-11-06, 08:51 AM
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TSP is basically a very strong detergent.Although it has some deglossing abilities deglosser will be more effective.I've never heard of anyone using TSP in a situation such as yours and do not believe it would give you the bonding properties you need between latex and oil.TSP is more commonly used to clean and prepare a wall for paint not as a bonding agent.

I'm not going to say it wouldn't work out but deglosser and/or sanding is much more commonly used for this purpose.Maybe some of the painters on this board have had other experiences and can weigh in.
 
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Old 11-11-06, 12:17 PM
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Sanding and applying a coat of solvent primer would be best, but wiping it down with deglosser should provide a decent bond. Be sure to follow directions on the can, fold or replace your rags often and dispose of them properly.

Both deglosser or a solvent base primer will have a strong odor, use plenty of ventilation if possible.
 
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Old 11-11-06, 01:06 PM
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I don't like liquid deglossers for a couple of reasons. The first is that it has a strong solvent odor. The second that reason, unless you change your rags frequently, after the first couple of swipes, you are just pushing any surface oils around.

I think that you will get excellent results using Simple Green. It smells like black licorice, is non toxic and mixes with water. It will dull the finish if you use a stronger concentration, and as an added benefit IS a de-greaser/cleaner.

This should give you the results that you are looking for, without the hazards of solvent. You can then topcoat with your choice of oil or latex.

Good luck!
 
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Old 11-11-06, 06:31 PM
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Basically, it "might" be OK
Although the TSP does have s o m e de-glossing characteristics, the "might" is not enough for me to recommend it

I prefer sanding over de-glossers myself
It's not t h a t labor intensive
You don't need to sand off the finish, just scuff it up
 
 

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