Plywood cladding – staining around nail holes


Rust staining from mild steel or hot-dip galvanised nails 


  • replace with stainless steel or silicone bronze nails if old nails can be removed; alternatively punch nails in if possible
  • fill punch holes with putty or exterior grade flexible (polyester) filler; prime; paint with minimum two coats of semi-gloss or high gloss acrylic paint