Anyone know why my paint won't stick to my sign. The sign is sanblasted cedar. The primer is working but nothing else. The sign feels warm. Colour we painted it was black. Any suggestions befor I have a bonfire.
------------------
Posted by Si Allen (Member # 420) on :
Might help if you told us what primer and paint you used on the sign!
------------------ Si Allen #562 La Mirada, CA. USA (714) 521-4810 ICQ # 330407 "SignPainters do It with Longer Strokes!"
Brushasaurus on Chat
Gladly supporting this BB !
Posted by VICTORGEORGIOU (Member # 474) on :
My guess without the facts would be that you are using an oil paint over a latex primer or the other way around. Funny things happen when paint and primer do not match.
If this is the case, you can figure it out by reading all that stuff on the labels of both cans. Someplace on there will be the info you need. Vic G
------------------ Victor Georgiou Bob Loves Signs Inc Danville, CA email blssigns@verio.com
I just went through the same thing. we made a beautiful sandblasted cedar sign, 1 month later the customer called and said the paint was bubbled up in the sun so I took the sign down and brought it to the shop, took the heat gun to it and sure enough blub blub blub the paint came right off! but the area where we varnished it were fine?! so I sanded the primer offthe rest of the sign and varnished it, then repainted over the varnish, seems the primer didn't penatrate the hardwood and just dried on the surface.
------------------ -------------------------------------------------- "A wise man once said that, or was it a wise guy?"
Ken McTague The Witch city Salem, MA
Posted by captain ken (Member # 742) on :
I just went through the same thing. we made a beautiful sandblasted cedar sign, 1 month later the customer called and said the paint was bubbled up in the sun so I took the sign down and brought it to the shop, took the heat gun to it and sure enough blub blub blub the paint came right off! but the area where we varnished it were fine?! so I sanded the primer offthe rest of the sign and varnished it, then repainted over the varnish, seems the primer didn't penatrate the hardwood and just dried on the surface.
------------------ -------------------------------------------------- "A wise man once said that, or was it a wise guy?"
Ken McTague The Witch city Salem, MA
Posted by Bob Rochon (Member # 30) on :
A couple of years ago we had a similar problem, we were using a fast dry oil based primer. It seems it was not compatible with the paint we were using. The primer was drying too quick and not penentrating the wood.
Without knowing what brand or kind of primer & paint you are using I would bet they are not compatible.
We went back to the chromatic brand primers and background enamels, & have never had a problem since.
Also I sand between each coat, did you sand the primer?
Bob
------------------ Bob Rochon Creative Signworks Millbury, MA bob@creativesignworks.com
