- Q.We are building an addition
on a 25-year-old house. The house has cathedral
ceilings with exposed unfinished pine board roof
sheathing, and the walls are paneled with unfinished
pine boards. The pine boards have darkened with age,
and the homeowners want the new pine boards in the
addition to match the existing boards. What’s
the best way to achieve this?
A.Wood finishes expert Bill
Feist responds: The color change in the old
wood is caused by ultraviolet and visible light.
Since the color change is just on the surface, it
could be removed by sanding. Of course, sanding all
of the existing roof sheathing and paneling to
reveal the blond wood underneath would be difficult
and tedious, so the best way to achieve a match is
to stain the new wood.
That said, it is difficult to stain new pine to
exactly match the color of wood that has been
slowly changing for 25 years. You should warn the
homeowners that an exact match will not be
possible. One trick is to thin out some of the
stain used on the new wood to also color the old
wood — but only slightly.
Over time, the color of the new stained wood
will most likely change, but the stain pigments, by
blocking some of the light reaching the wood,
should slow down that process. Hopefully, with
time, the old and the new wood should stay nearly