Can be left exposed during the restoration without absorbing moisture.
Professional body shops are able to prepare, prime and finish in a controlled environment. When working in anything other than the perfect environment, atmospheric conditions and your primer's ability to cope with them is vitally important. Easy sand body shop primers are porous and if not painted in a controlled environment within a specified period of time, will absorb moisture, this leads to corrosion.
For perfect results when restoring body work in a non-body shop environment you need the added protection of Rustbuster Custom Epoxy 421.
Non-porous pure Epoxy primer
Reduced risk of micro-blisters and corrosion
Rustbuster Custom Epoxy 421 is the perfect base for priming Steel, Aluminium or GRP.
Custom Epoxy 421 can be painted with either single pack cellulose or two pack finishes after a light sanding with a P320 abrasive.