Using wood stain on external items and surfaces offers both homeowners and professionals several big advantages. For example, it prevents the wood from rotting if it hasn't already been sealed. It also protects wood from moisture and sun damage, preventing the wood from breaking in freezing temperatures and unsightly discolouration. Wood varnish helps to seal and protect a range of wooden surfaces, and you can buy it in a choice of colours. You can use interior varnish to coat and seal internal doors, as well as wooden furniture such as dining tables, wardrobes, and bedside tables. You may also wish to apply it to your skirting boards to give them improved protection and an attractive shine. There are clear versions, as well as products that come in natural wood shades like oak and pine.