How long your exterior paint will last depends on choosing the right type of paint for the job - and finding the best exterior house paint means considering the surface you're working with. Confused?
It's important when painting or re-painting your home to consider the type of exterior paint best suited to the job. Generally, follow these rules:
Wooden home exteriors - Acrylic latex paint (with a stain blocker included) is a good choice for wooden exteriors. It is generally thinned with water, dries very rapidly, is easy to apply and is durable. Before using this type of paint on your home's exterior, you'll need to apply a primer to the wooden surface.
Vinyl-clad exteriors - For vinyl-clad exteriors, the best type of paint is a 100% acrylic latex paint. And the good news is that dealing with a vinyl exterior is very straightforward - no primer is needed. Just apply the paint directly to the cladding.
Steel-clad exteriors - Alkyd is a synthetic exterior paint that is diluted with solvent. It works well on steel-clad exteriors and can also be used over old oil-based paint. Steel is often coated with grease to protect it during transport, so if your cladding is new, clean it first with mineral turpentine. Apply a metal primer then one or two coats of the alkyd paint.
Aluminium exteriors - 100% acrylic latex paint or alkyd paint can be used on aluminium cladding. No primer is needed if using alkyd paint; if you're using acrylic latex, it's a good idea to use a high-quality acrylic latex metal primer first. The key with aluminium cladding is to wash it thoroughly (and let it dry properly) before painting.
Concrete, stucco or masonry exteriors - Elastomeric exterior house paint is a relatively new type of acrylic paint that has been developed as an exterior paint for concrete, stucco and masonry structures. It is applied at four to five times the thickness of a normal acrylic paint and works to combat the cracking caused by temperature fluctuation by expanding and contracting, to span any surface cracks.
Environmentally friendly paints - For many home owners, exterior house paint choice is tied up with environmental concerns. Now available are zero- or low-VOC (Volatile Organic Compound) paints, for people with chemical sensitivities, and paints made from all-natural ingredients. Consult a paint specialist to find out more about using these kinds of paints on your home's exterior.
taken from: www.improvemyhome.com.au
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