It’s not necessary to use an oil-based primer on bare wood these days, says Rob. Resene’s acrylic Quick Dry primer works for almost every job. He makes an exception for cedar — often used on garage doors. That should be primed with an oil-based primer.
Knot holes that have a build-up of sap should be scraped and dressed with Aluminium Wood Primer before they are filled. You might also need it for other areas where resin in the wood has built up, seeped, and stained paint. That will work for most leaching-type stains, but if you have problems with the substrate staining your primer or undercoat, talk to a paint adviser. There’s a wide selection of specific problem sealers available, and primers for glass, metal, and vinyls.
You can clean staining from rusty nails using oxalic acid, but rust is often a sign that the nail has failed, so it really should be dug out, replaced, and the hole filled.
Topcoats come in a variety of finishes. Gloss was preferred in the past as it slowed the chalking effect and is easier to wash down, but flatter finishes are preferred by painters. And small imperfections are not as obvious.
Going a dark colour induces a lot of heat stress on timber new and old
Rob still recommends a semi-gloss for traditional-style houses and villas. “It gives you that pop, and they are easier to clean, which we are all going to do from now on, aren’t we?”
Finally, he advises that buyers stick to products designed for our local conditions — specifically lots of rain, salt-laden air, and intensely strong UV almost unique to New Zealand. He says that products designed for conditions on the other side of the world, or even for Australia’s dryer conditions, simply won’t perform as intended here. Check out the New Zealand Green Building Council’s (NZGBC) Homefit programme. This organization is aiming to lift New Zealand’s building performance standards up by the bootstraps. For too long New Zealand buildings have been cheaply built and poorly designed and that has cost us our health, comfort, productivity, time, and money spent on extra maintenance and energy costs. There’s a wealth of practical advice on its website for creating better buildings from scratch or when doing renovations.
If you have detail like this to paint, spraying will give you the best result. With the amount you will be saving on a professional painter, you can buy yourself that spray painter you have always wanted