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Top 10 Most Common House Paint Problems and How to Fix Them

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Rust Discoloration
Nail Rust Through Paint

Nail Rust Through Paint

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Symptoms: Rust Discoloration
This problem is characterized by rust colored reddish-brown to black stains on the paint surface.

Potential Causes:

  • Non-corrosion resistant nails were used instead of galvanized zinc plated or stainless steel nails.
  • Steel nails became in contact with the air.
  • Steel nails popping from surface.
  • Excessive weathering or sanding has worn away galvanized coating on nail heads.
  • Tannic acid from moist wood (e.g., oak) has reacted with steel nails creating a black stain.
Possible Repairs:
  • If possible, replace steel nails with galvanized or stainless steel nails.
  • If rusted nails can't be removed then remove rust by sanding nail heads to bare metal and countersink
  • Prime with a stain blocking rust inhibiting primer
  • Caulk, fill or patch depressed nail heads and sand smooth.
  • Paint with a high quality paint.

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