A good question with a thousand answers . First you must clean it . This is necessary to allow the sealer to penetrate and not cause a blotchy appearance. Pick up a Liquid deck cleaner and ” read ” the directions you’ll need a garden pump sprayer too. Spray the wood to wet all areas. Allow to work recommended time , and rinse , preferably with a pressure washer , be careful not to get too close as it will leave marks.
Once its completely dry , a day or so , fill up that pump sprayer with your sealer of choice. use light weight plastic to protect the house, grass, furniture , Its best to get a local dealers help on which product based on your climate, amount of sun , rain etc.
Spectra Painting, Inc