Prime
Before Installing
After cedar has achieved equilibrium moisture content
and before it is installed, a coating on all surfaces
is recommended. The type of coating will vary with
final finish selected. The coating protects the
wood from water penetration, helps prevent staining
caused by mildew and extractives and can increase
the service life of top coats. The following coatings
have proven themselves in field testing (Table 2).
Check with your paint dealer to make sure that
the prefinish coat you select is compatible with
the intended finish coat. For example, clear water
repellants should not be used where the intended
finish is a bleaching oil.
Table 2. Recommended Priming
Procedures for Cedar Siding
| Type of Finish Coat |
Recommended Priming Coat |
| Natural and semi-transparent
stains |
Coat all surfaces with the stain
|
| Solid color stains and paints
|
Coat all surfaces with an alkyd
oil stain-blocking primer. Alternatively,
use a clear water repellant on back of siding
and the primer on face and edges |
| Bleaching Oils |
Prime all surfaces with a coat
of the bleaching oil |
|
