Oct 11, 2007

Putty & Fillers

DAP CRACKSHOT mixed with blue food coloring provides easy-to-see patches when it comes time to sand. This allows smooth feathering of edges while at the same time helps prevent missing areas that need sanded. This TIP may or may not require a primer to lock in the food coloring. Test a sample area first.

With countless methods and products available to prepare new trim for paint who’s to know which method produces the best finishes. We take a close look into various products for filling nail holes and repairing imperfections on the surface of trim to achieve a nice smooth finish. Painters all have their preference when in comes to filling nail holes on new trim. A few popular methods for filling nail holes are, nail putty, window glazing, wood filler, drywall mud, shrink-free spackling, sawdust and glue, whiting powder and oil based paint, even caulk to name a few.

The method of attack is solely based on the type of finish you desire. For every method mentioned previously, there are countless products available. For example nail putty in our area is sold by MinWax, DAP, Sherwin Williams, Color Putty brand, Crawfords to name a few but all perform differently. Nail putty is sold in oil-based and water-based formulas. It’s important to know which to use under various finish paint products. For example, you might think using a oil-based putty for oil-based paints is best, not true.

In fact, it’s the opposite. When an oil-based putty is used under oil-based paints, the nail putty leaves a shiny wet spot in the surface of the paint and takes months to dry out.

Paint contractors can not afford to wait the recommended drying period of up to 21 days for oil-based nail putty to cure prior to painting so we turn to other methods that allow us to produce quick turn around on finishes without much delay. There are many work-around methods to use oil-based putty under oil finishes. Some include using whiting powder or drywall dust to dry-out the oils in the putty with the idea of making the putty as dry as possible and still workable to fill holes with. While this method can work the putty still needs to skin over and overnight is best before applying the finish paint. Another method used in the field is filling with an oil-based putty and priming with an acrylic primer prior to applying an oil finish.

See also: Stainable Wood Fillers

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