Cedar has a number of characteristics that make it desirable for outdoor projects including decking, siding and construction. Cedar takes on a wide variety of colors, is low in pitch and resin, has a pleasing aroma, and resists decay and rotting. The aromatic compounds within cedar discourage most wood-damaging insects.
The treatment of cedar with a waterproofing can prolong its life and enhance its appearance. Waterproofing material is most effective when applied to newly milled cedar.
Things You'll Need
- Sandpaper (50-60 grit)
- Paint brush or roller
- Water repellent preservative
Clean any dirt accumulated on the wood. If the cedar has a very smooth finish, scuff slightly with 50 grit sandpaper.
If the cedar has been exposed to weather for more than two weeks after being cut, sand the surface and clean thoroughly before treating.
Procure a wood waterproofing material. These are available at most home centers and hardware stores.
Waterproofing treatment is available in clear or with various colored tints. Cedar will absorb a variety of tints quite well.
Apply the waterproofing with a brush or roller, as per manufacturer's instructions. Backbrushing, a technique in which the dry brush is stroked in the opposite direction from which paint was applied, will even out the coat.
If you are applying the waterproofing on installed cedar, pay close attention to treating horizontal surfaces where water can accumulate.
Recoat with multiple coats. Cedar typically needs to be retreated every two years, but this can be extended with multiple waterproofing coats. For maximum lifetime, apply as many coats of waterproofing as the cedar will absorb.
If you plan to paint the cedar after waterproofing, do not treat with more than one coat.
Tips & Warnings
- Follow manufacturer's recommendations for selecting a compatible waterproofing and paint combination.
- Use caution when working with cedar. Cedar splinters can be especially irritating.
How to Waterproof Wood (unpainted)
If you are working on a wood project that will be used primarily outdoors, such as a gazebo, cedar chairs, cedar garden...
How to Weather a Piece of Cedar Wood
Cedar is a wonderful wood prized for its durability in exterior applications. When used outdoors it weathers to a gray to silver...
How to Care for a Cedar Wood Fence
Cedar is a durable and resilient wood that can withstand a lot of wear and tear brought on by the weather elements....
How to Seal Cedar Wood
All varieties of cedar that are available for exterior and interior building projects are naturally resistant to rot and decay, so a...
How to Refinish Cedar Decks
Cedar is a long-lasting, naturally interesting wood to use for a deck, but over time, the wood fades to a dull gray....
Weather Resistance of Cedar Vs. Redwood
Long recognized for their resistance to deterioration, both cedar and redwood are suitable for a variety of interior carpentry applications and exposed,...