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National Rule 4:1 High Build Primer

National Rule 4:1 High Build Primer

SYSTEM 20


Multipurpose primer offering the functionality of ‘3 products in 1’. Mix 4:1 for a primer filler, 4:1:1 for a primer surfacer or 4:1:2 for a primer sealer.

  • Use for spot repair and large panels
  • Excellent build and surface leveling properties
  • Easy to sand wet or dry
  • Can be applied direct to metal, over most plastics and over unsanded E-coat, aluminum* and galvanized*
  • Tintable with up to 10% with urethane mixing base

*Requires an acid etch primer, like ACID#8™

Substrates: Bare metal, properly prepared aluminum and galvanized, GRP, SMC, fiberglass, polyester filler, OEM surfaces



Code Size/Pack Color Ctn View technical
data sheet
View health &
safety sheet
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