Can you put polyurethane on cedar wood?
Cedar wood, like other fine woods, can and should be coated with polyurethane for protection. Polyurethane will keep dirt, dust, and oil from getting onto the cedar which would dull and damage the color. If the cedar you want to protect is not new it will need to be scrubbed with hot soapy water and a cloth.
Linseed oil is the best clear cedar finish for outdoors because it is durable and dries quickly. Most clear stains that dry quickly contain linseed oil as the main component. However, other oil-based stains and solid wood stains work excellently on outdoor projects.
Transparent, non-flexible, film-forming finishes such as lacquer, shellac, urethane, and varnish are not recommended for exterior use on cedar. Ultraviolet radiation can penetrate the transparent film and degrade the wood.
A thorough coating or two of an acrylic-based paint is by far the most protective of the finishes on offer. It will shield the timber from moisture and weathering, but will completely conceal the wood's colour and grain — so make sure to choose a wood paint of your desired colour.
- Clean any dirt accumulated on the wood. If the cedar has a very smooth finish, scuff slightly with 50 grit sandpaper. ...
- Procure a wood waterproofing material. ...
- Apply the waterproofing with a brush or roller, as per manufacturer's instructions. ...
- Recoat with multiple coats.
Compared to other finishes, paint offers the greatest protection for western red cedar siding against the elements. And while cedar siding accepts, holds and showcases all types of paints beautifully, your best choice is a 100% acrylic latex formula. They outperform other types of paints in all types of weather.
Cedar offers a durable option for exterior and interior building projects with natural resistance to rot and decay, so a protective finish is optional. If you want to enjoy the aroma of varieties such as Western Red Cedar and incense cedar, leave the wood unsealed.
Rot, premature aging, and warping can occur from the weather and elements when the boards aren't sealed. Finishing off your newly-installed cedar deck with a sealant or wood stain will help to prolong the life, beauty, and appeal of the deck for years to come.
Staining Cedar With a Semi-Transparent Stain
Semi-transparent stains are your best bet when you want the real look of slightly weathered cedar with protection. The few solid particles in this mix will not significantly obscure cedar's wood grain.
To prevent cedar from fading to gray, you need to seal cedar fence with a stain that blocks ultraviolet light and contains a mildewcide, according to Family Handyman.
Can you leave cedar untreated?
Left untreated, cedar shakes — individual planks of one of several varieties of cedar — will discolor and begin to soften, with a possibility of rot after about five years, depending on the climate. There are several options for covering cedar siding, including stain, a clear treatment or paint.
Don't use polyurethane on rough cedar, as the wood's coarse nature will prevent the sealer from bonding properly. Semi-transparent water-proof oil-based stain will adequately seal rough cedar against wear and water-based rot.
Although cedar is naturally resistant to rot and decay, staining your siding promptly will help in the preventing of deterioration.
Answer: Because bleaching stain requires sunshine to change your shingles' color, it depends on the amount of sunlight that hits your home. On the South Shore, it takes about six months- 12 months to turn cedar shingles from their natural color to gray.
- 100% Pure Tung Oil Finish Stain & Sealer – Best Overall Cedar Sealer.
- #1 Deck Premium Semi-Transparent – Best Semitransparent Wood Sealer.
- THOMPSONS WATERSEAL TH.042851-16 – Best wood preservative for cedar.
- Ready Seal 512 5-Gall43on Pail Natural – Best stain and sealer in one.
If you are looking to preserve the beautiful rich grain of, say, a mahogany or cedar decking, we recommend sealing the deck with a translucent penetrating stain within 1-2 weeks of construction. This will ensure minimal or no UV damage and give your deck that natural look.
Left untreated, your Western Red Cedar (or Alaskan Yellow Cedar) will naturally weather to a silvery grey. Especially in coastal areas where a “beachy” look is desired or by those concerned with applying finishes, this is a beautiful, natural choice.
Due to its chemical properties, cedar is naturally weather-resistant and repels most bugs. But over the years it can crack slightly and develop a fuzzy surface texture unless it's periodically refinished. Cedar accepts sealers and stains beautifully and should be refinished every two to three years.
Cedar naturally releases chemical extracts when it gets wet. These chemicals darken as the wood dries, leaving streaks that can show up through a layer of stain or paint. The best way to prevent bleeding is with a water-tight seal. Use multiple coats of sealant if you live in a wet climate.
Cedar looses it's natural oils over time. An oil based sealer will help replenish most of the lost oil and protect the wood inside and out. Every two years a deck should be redone, cleaned and sealed.
How do you keep cedar from turning GREY?
- Clear Weeds and Plants. Clear away any weeds along the fence line, and tie back any plants growing in front of the fence. ...
- Mix Cleaning Solution. ...
- Scrub Fence with Cleaning Solution. ...
- Wash Debris from Fence. ...
- Let Fence Dry. ...
- Apply Cedar Fence Stain. ...
- Reapply Stain as Necessary.
Most people selecting western red cedar for use indoors will want to retain its natural appearance. This is best achieved using transparent finishes such as waxes, shellac and other clear film forming finishes.
Cedar is soft and needs protection, the best finish is McCloskey Marine spar varnish. Do not use poly, it is soft and does not last. You can seal it with thinned spar varnish with turpentine and allowed to dry, lightly sand and finish with the varnish. The drying time is long so protect from dust.