PRODUCTS CLAIM TO STOP RUST; SOME ARE PAINTS, SOME ARE CONVERSION
PRODUCTS, SOME ARE RUST TREATMENTS. NONE SEEM TO REALLY STOP RUST
PERMANENTLY. WHY IS POR-15 DIFFERENT, AND WHY SHOULD I BELIEVE IT WILL
WORK ANY BETTER?
Rust is caused by moisture coming in contact with metal, which causes a
chemical action called oxidation. All paints provide a measure of
protection for a while, but since they are eventually softened and
weakened by moisture, it is only a matter of time before moisture
penetrates the painted surface and attacks the metal below. All of the
so-called rust preventive paints on the market (except POR-15)
are weakened by exposure to moisture. POR-15
is strengthened by exposure to moisture. Notice the hardness of the POR-15
coating. It doesn't chip, crack, or peel like ordinary paints do, and
its hardness will resist the wear and tear of every day life.
Rust conversion products claim to
change the chemical nature of rust and convert it to a more stable
element that won't rust again. History of the failure of these products
is well documented; most simply don't work for more than a few months
at best, and they are subject to the same chipping and cracking that
occurs with ordinary rust coatings.
works because it chemically bonds to rusted metal and forms a rock-
hard, non-porous coating that won't crack, chip, or peel. It keeps
moisture away from metal with a coating that is strengthened by
continued exposure to moisture.
IT BETTER TO BRUSH OR SPRAY POR-15?
Most people brush it on, but many spray also. Proper
equipment and organic vapor particulate respirators for solvents are
essential for spraying.
HOW DO I THIN
POR-15 IF I WANT TO SPRAY IT?
You should use only POR-15 Solvent for
thinning. Keep lacquer thinner handy for clean-up. Do not thin POR-15
more than 5%.
CAN I PAINT
OVER POR-15 WITH OTHER PAINTS?
Absolutely. POR-15 will
accept all paints, including lacquer-based paints. POR-15
Tie-Coat Primer is the best prime coat to use before topcoating POR-15.
Be sure to read thoroughly our directions and tip sheets regarding
topcoating before using POR-15.
CAN I USE
BODY FILLER OR PUTTY WITH POR-15?
Yes. First paint both sides of the rusted area with POR-15;
then use body filler or putty as soon as the POR-15
is dry to the touch.
HOW LONG DOES
IT TAKE POR-15 TO DRY?
That depends on the ambient humidity (surrounding area). The more humid
the area, the faster the dry time, which usually varies from 3 to 6
DANGEROUS TO GET POR-15 ON MY HANDS?
No, but if you do, remove it at once with solvent or lacquer thinner.
If POR-15 dries on your skin, nothing
will take it off, and you will 'wear' it for 3 or 4 days until natural
oils and flaking skin remove it.
POR-15 VAPORS DANGEROUS TO MY HEALTH?
Yes. That's why you must always paint in a well-ventilated area and
keep your nose away from the paint container. POR-15
is not dangerous if you follow our simple directions.
WHAT IS THE
BEST SURFACE ON WHICH TO PAINT POR-15?
POR-15 likes rusted surfaces best.
Seasoned metal and sandblasted metal are also good. POR-15
does not adhere well to smooth, shiny surfaces, but will adhere well to
those surfaces with the proper preparation.
WHAT IS THE
We make a product called 'Prep & Ready' aka 'Metal-Ready'. It's a rust remover that leaves
a zinc phosphate coating on base metal, the perfect preprimer for POR-15.
NOTE: New steel is coated with a protective oil finish at the mill.
This finish must be removed before using POR-15
or Metal-Ready. Clean metal first with POR-15
Marine-Clean, then rinse with water and dry. Surfaces treated with Metal Ready should be be rinsed with water prior to coating.
(BLACK, SILVER, GRAY, CLEAR) SHOULD I USE?
Silver contains metal filler and should be used in badly rusted, pitted
areas. It will fill in holes better than black or clear. Black is
generally used on frames, underside of fenders, etc. because that's the
usual color there. Clear renders the smoothest finish and is often used
as a preprimer on exterior surfaces; Gray is great on concrete floors,
bilges, storage areas, as well as steel.
MUST I PAINT
OVER POR-15 TO MAKE IT LAST?
No, but POR-15 has an
ultra-violet sensitivity and must be topcoated if continually exposed
to sunlight. Once topcoated, POR-15 will
remain effective for many years.
WILL THE SUN
DESTROY MY POR-15 COATING IF I DON'T TOPCOAT IT?
If the surface is exposed to the sun for an extended amount of time,
the UV rays will eventually break down the POR-15
and cause it to fail. That’s why we recommend you topcoat it.
CAN I APPLY
POR-15 OVER OTHER PAINTS?
Yes, but you will lose the important benefits of POR-15.
You must remember that ordinary paints are weakened by exposure to
moisture. POR-15 can't stop rust if it
isn't in direct contact with the base metal.
CAN POR-15 BE
USED WITH FIBERGLASS?
Absolutely. POR-15 is
fully compatible with fiberglass and can be used to repair cracks in
gelcoat. It will adhere better than polyester resin and has greater
strength. Use also with fiberglass cloth to make super-strong surfaces
in rusted-out areas. But be aware that POR-15
doesn't contain styrene and thus cannot melt fiberglass cloth like
polyester resin does.