There are certain paints
that are meant for special coating and therefore their
composition is such that it suits the specific
purpose. Normally such paints are used on the
exteriors. These paints are used to paint the porch,
deck, paint metals, paint boats or paint masonry.
Given below is information about paints and their
qualities that make them special paints.
For the porch and deck you can choose alkyd
paint, latex paint, polyurethane paint or rubber based paint.
As these areas of the house are made of either wood or
concrete, the area will have to be prepared before applying
paint. The range of colors is limited and these paints dry
quickly. The paint in normally poured on the floor and roller
with a long handle is used to spread the paint.
For a metal surface the surface will have to
be primed properly. Some priming agents have rust-resistant
quality as well. Paints that can be thinned, with either water
or solvent, are available in a wide range of colors. Depending
on the finish you desire use a brush, roller or spray the
paint on to the surface.
For masonry you can use latex paint, Portland
cement, rubber-based paint or alkyd paint. Cover the masonry
with a layer of transparent silicone. Latex paint is the
easiest to apply, the rest of them are rather difficult to
apply.
Marine paint is special manufactured for
painting boats. This paint gives an extra durable finish on
wood and metal. It is very expensive and has a consistency
that makes painting a difficult task.
There are certain characteristics that paints
have in different degrees. These characteristics influence the
result obtained by using the particular paint.
Time to dry and durability: Oil based and
alkyd based paints are durable but take a longer time to dry.
Using them on exterior walls will make them vulnerable to
insect damage and unforeseen rain. Latex paints dry rapidly,
are porous reduces moisture related difficulties but they peel
off if the surface that they are applied on are not properly
prepared.
Many exterior paints have a chalking quality.
This is a means of self-cleaning, dirt that has settled on the
paint, is removed as it peels off after every rain. The chalk
can get on your clothes if you brush against walls with
exteriors with this paint.
Attention must be paid to the earlier coats
applied, especially wood. If the wood has been previously
covered with water thinned paint or solvent-thinned paint, use
the same product for the next coat as the case may be. If you
are unsure use alkyd-based paint which can be applied easily
over both products.
You must be clear about what kind of finish
you want for the exterior. You can choose from flat,
semi-gloss and gloss. For exteriors the popular choice is a
flat finish. Enamel finishes means semi-gloss or gloss finish.
If you use the same color as on the walls or
a color close to it, you will spend less time painting. Use
one-coat guarantee paint, this paint is made thicker and has
resins and pigments are present in higher concentration. These
paints come with specific instructions that it should be
applied over surfaces in good condition or primed new wood.
This paint is a little expensive. So though you will spend
more money, you will spend less time on painting, which makes
it a good buy.
As a rule exterior paints are more expensive than
interior paints. They contain more resin for durability and
moisture resistance and more pigment for color.
