This discoloration is most likely caused by a combination of excessive tannins leeching from the wood and mildew growth.
Painting new cedar siding.
Remove pollutants and remove failing paint.
In addition well painted siding repels mold and mildew and will make it easier to wash off any dirt or grime.
In many markets like new england for example painted siding is the preferred look.
Thus solid color stains let some of the cedar s grain show through but none of the color.
Cedar siding painting will only be successful if you have a clean slate.
Beyond that western red cedar has multiple advantages over other cladding options because it is natural sustainable and is a renewal product.
Some sections of old unpainted shingles and siding may look darker than others.
What you get is a very uniform opaque color.
Uncoated weathered western red cedar siding or trim can often be restored to its original color by applying commercial products called cleaners brighteners or restorers.
It is not all about protection.
Staining cedar with a solid color stain.
The upside is that solid color stains will block most damaging ultraviolet light.
When painting or staining new cedar with new cedar wood siding starting from scratch as in an artisan s canvas this surface area should be cleaned and dried.
Although intended primarily for restoring horizontal wood surfaces such as decks these products generally work almost as well on vertical surfaces.
It s available in a variety of shades and it works well with paint or stain because of its lack of pitch and resin.
Besides adding beauty to your home painting your cedar siding can help protect it from rot too.
Painting cedar however calls for some preparation.
Having cedar lumber wood siding such as 1 x 6 1 x 8 1 x 12 or two inch thickness can be painted with a solid paint stain not requiring primer but still not recommended painting cedar if you can help it.
Do prime the exposed wood whether new or previously painted with oil primer.
Step 4 let the cleaner sit on the cedar siding for 15 to 30 minutes.
You ll have to remove the mildew and prime the wood with a stain blocking primer.
Cedar siding can provide a warm rustic look to your home.
Solid color stains have solid particles but not nearly as many as paint.
Apply the wood cleaner to the cedar siding using a paint brush or roller.
For many owners painted cedar siding is a particular style.
Brand new cedar wood and cedar siding freshly milled could have a moisture content too high accepting much of the product coatings your attempting to use.