Most decks don't fail because the wood was wrong. They fail because nobody touched them between year one and year five. Here's a season-by-season schedule we share with every decking client at PitchPro — built around how pitch pine and cedar actually behave, not around how often a manufacturer wants to sell you a tin of oil.
Spring (March–May): assess and clean.
After winter rain and frost, the deck has done its hardest work. Walk it slowly. Look for cupping, lifted screws, end-grain checking, and any board that sounds hollow when you tap it. Note the worst three boards.
Sweep, then wash with a soft brush and warm water with a splash of dish soap — never a pressure washer above 1,200 PSI on softwood. Allow 48 dry hours before any treatment.
If your deck is over four years old and has never been re-oiled, spring is the moment. Wait another summer and you'll be sanding, not just brushing.
Late spring / early summer: re-oil.
Apply a single thin coat of penetrating oil — hard-wax or marine grade. We recommend Osmo Polyx-Oil 3032 for residential pitch pine and Owatrol D2 for cedar that has greyed naturally. Use a flat brush, work two boards at a time, wipe off any excess after twenty minutes.
- One coat is usually plenty. Two coats look the same and waste half a tin.
- Skip the deck for 24 hours after application — pets included.
Summer (June–August): sweep and inspect.
Mid-summer is the right time to lift planters, mats and anything else that hides the boards. Wood needs to dry from below as well as above, and trapped moisture is the single biggest cause of rot we see on otherwise healthy decks.
Autumn (September–November): clear and protect.
Once the leaves drop, get them off the deck weekly. Wet leaf litter holds tannins that stain pine and accelerate greying on cedar. If you're not going to walk on the deck for a few months, a breathable canvas cover is fine — never plastic sheeting, which traps moisture against the boards.
Winter (December–February): leave it alone.
Pitch pine and cedar are designed for this. Don't salt the deck. Don't shovel with a metal-edged blade. If you must clear snow, use a plastic shovel and leave half an inch of snow on the surface as a buffer.
The five-year refresh.
Every five years, plan a longer day with the deck. Light-sand with 120-grit on a random orbital, blow off the dust, and apply two thin coats of oil 24 hours apart. That single annual day is usually all that stands between a 20-year deck and a 35-year deck.
Questions about your specific spec? Email [email protected] with a photo and we'll send notes back the same day.