Best spar varnish. It is made with a combination of phenol and alkyd resins for superior protection. Spar urethane is more long lasting especially when the wood product is a boat that is it does not require a frequent application but it may cost a lot in comparison to spar varnish which requires frequent application and is inexpensive. Testers applied dozens of exterior wood finishes 22 one part varnishes six two part varnishes 18 synthetics and satinsvarnish alternatives and eight teak oils and sealers to small panels of bare solid teak and set them out to face the rigors of south floridas weather. You can see that the varnish from the marina was fairly effective at blocking uv light.
Epifanes is considered by many to be the best varnish around. In the middle two common spar varnishes with claims to uv resistance sold at home centers. As you know boats are expensive these days so it is just right that you purchase the right products tool and equipment to ensure their safety and longevity. With these the varnish is dissolved in solvents so it begins to harden as soon as its applied.
Traditional varnish sometimes called spar varnish or marine varnish is a resin in an oil base with solvents. Often the term spar is found in the name but this does not indicate any additional or special ingredient. You can apply a second coat of tung oil varnish before the first layer is totally hardened because the solvents will keep evaporating out of the underlying varnish layer. They also use tung oil rather than the less expensive linseed oil.
And at the right an indoor varnish with no claim to uv resistance. Exterior varnish or urethane both finishes are technically varnishes builds a protective layer over the wood. It offers superior protection and durability over an oil finish. The primary reason why boat owners try their best to invest in the best spar varnish is to provide utmost protection to their most cherished vessel.
The best of everything is used in this varnish to provide the best possible end. It has natural uv protecting properties. The formulation of the product allows it to move with the wood throughout each season. Spar varnish protects the wood from water heat stain and solvent discoloration.
This is a spar varnish with uv inhibitors built in. It provides a fair amount of scratch resistance. At the left a uv resistant varnish sold at marinas. Exterior varnish or urethane.