FAQ - Application Guidelines
Frequent Asked Questions
The following is a brief guide on some frequently asked questions...
Do I need to use Marine Clean and Metal Ready every time I use POR 15® Rust Preventive Paint?
No. It will depend on what you are doing - here are some quick guides...
Painting a rusty gate or general farm machinery - as long as it is clean just wire brush, dry and paint with POR 15® Rust Preventive Paint.
I want to do some general car repairs, around the windows, doors and sills etc.
Just prep around the rusted area, and remove as much rust as you can by hand, again if the area is clean, use some Metal Ready to remove rust and prep both new shiny metal or old rusty metal, Metal Ready will also take any weld scale off, rinse with water, allow to dry and paint with POR 15® Rust Preventive Paint.
I want to paint my floor pan / chassis / underbody areas.
These areas are normally heavily contaminated with just about everything - oils, waxes, grease, dirt etc. The use of Marine Clean is very important in these areas, because without it the whole paint system performance, can break down. Rinse well, follow with Metal Ready, rinse and dry. Then apply POR 15® Rust Preventive Paint.
I've just sandblasted some steel, do I need Marine Clean and Metal Ready?
No, just paint it with POR 15® Rust Preventive Paint - the surface is already cleaned and keyed.
When painting POR 15® Rust Preventive Paint on aluminium should you always use Metal Ready?
Yes, and generally the use of Marine Clean is also advisable.
Will POR 15® Rust Preventive Paint stick to wood or concrete?
Yes, POR 15® Rust Preventive Paint will stick to just about anything, as long as the surface is clean, and it has something to stick to, eg. the surface has some profile.
Can I recoat POR 15® Rust Preventive Paint with any paint?
Yes, POR 15® Rust Preventive Paint is compatible with all paints. Just be sure to follow the recoating directions.
How do I topcoat POR 15® Rust Preventive Paint? - the three options
1. Apply topcoat within 48 hours (12 hours for non POR 15® topcoats) of the last coat of POR 15® Rust Preventive Paint being touch dry.
2. Apply our Tie-Coat primer - at any stage from touch dry.
3. Allow surface to fully cure (96 hours) sand POR 15® Rust Preventive Paint - this is not an easy job, on such a tough surface.
We recommend option 1 or 2, as being the simplest and most cost effective.
Why do I need to "topcoat" over POR 15® Rust Preventive Paint anyway?
You don't unless the POR 15® Rust Preventive Paint will be exposed to sunlight (UV rays tend to discolour the finish) or you are after a definite colour. For example the Black POR 15® Rust Preventive Paint will go completely matt with UV exposure.