Best wood preserver 2021: The best wood treatments to protect sheds, floors and furniture
What's the difference between wood preserver and varnish? Wood preserver is basically an undercoat. You brush or spray it onto raw, freshly sawn or sanded wood surfaces to stabilise the wood's moisture content and protect it from rot and decay. Varnish, by contrast, is a topcoat. It won't protect the wood on its own. Same goes for paint, wax and wood oil. So, if you want your woodwork to last, start with a few coats of wood preserver, wait until they're fully dry, then go ahead with the varnish or other decorative topcoat of your choice. Can I use wood preserver on its own, without a topcoat?