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How
Do I Remove Black Marks?
To remove black mill and banding marks from newly milled Redwood, apply oxalic acid mixed
in very hot water. Scrub with a natural bristle brush and rinse with cold water. Lumber crayon marks can be removed with goof-off.
How
Much Does Redwood Shrink?
As a rule of thumb, figure
.7% for every 4% change in moisture content. Thus, a green 2x6 going from 24% to 12% moisture will shrink 1/8 in. Longitudinal
shrinkage is about .01%. Thus, a ten foot 2x6 with the same moisture will shrink about 1/4in.
How Do I Make New Redwood Match Existing Weathered Stock?
Apply 4 oz. Baking Soda to a
gallon of warm water. Brush on, wait until desired weathered appearance is obtained, and rinse off.
When Do I Apply Redwood Sealers?
Wait two to four weeks in good weather before applying
a penetrating oil sealer to unseasoned redwood. If oil sealers are applied to very wet redwood, the oil will not penetrate,
and may puddle. If allowed to congeal, puddled oil sealers become tacky and very difficult to remove. Kiln Dried redwood
can be sealed right away. How Much Does Redwood Weigh?
Rough unseasoned (aka green or wet) Redwood can have as much
as 24% moisture, and weighs approximately 3 lbs per board foot. Surfaced green Redwood weighs about 2.5 lbs/bd ft. Kiln dry
rough Redwood weighs in at about 1.9 lbs./bd ft, whicle surfaced KD weighs about 1.4 lbs/bd ft. Green redwood has the density
of uranium.
How Do I Remove Pitch Bleeding?
Remove pitch with turpentine and a shop rag. Pitch bleeding, a response to heat, will gradually stop as the
wood becomes fully seasoned.
Bark Up or Down?
Redwood 2x4 or 2x6 has very little tendency to cup. Therefore, when laying Redwood for a deck, a
board should be oriented with the bark side of the tree up to minimize grain lifting. With wider facewidths, such as 2x10
and 2x12, the bark should be oriented down to prevent cupping.
What is the Best Method to Clean a Deck Prior to Refinishing?
Badly stained
or weathered areas should be lightly sanded (make sure to countersink exposed fasteners before sanding). Then, scrub the deck
with mild detergent (e.g. shampoo) in warm water using a natural bristle brush. Rinse and allow the deck to dry for a day
in good weather. We do not recommend powerwashing.
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