Painting Tips
Alligatoring  Blistering  Blocking  Burnishing  Cracking/Flaking 
Efforescence  Exterior Fade  Frosting  Mildew  Nail Head Rusting 
Peeling  Picture Framing  Poor Hiding  Poor Sheen Uniformity 
Roller Marks/Excessive Stipple  Surfactant Leaching  Vinyl Siding Warp  Wrinkling  

NAIL HEAD RUSTING
Description:
Reddish-brown stains on the paint surface

Cause(s):
Non-galvanized iron nails have begun to rust, causing bleed-through to the top coat
Non-galvanized iron nails have not been countersunk and filled over
Galvanized nail heads have begun to rust after sanding or excessive weathering

Solution(s):
Countersink nail heads and prime with a rust inhibitive primer
Caulk them with a top quality, water-based all-acrylic or siliconized acrylic caulk prior to priming and painting
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