All finishes performed better on the saw-textured bevel siding. Some of the finishes lasted more than 10 years (Table 4).
A typical example of the plots (Figure 5) and the service life (Table 5) for this group of finishes shows that the performance is excellent on the saw-textured bevel siding. Many of the finishes lasted more than 12 years at both sites.
However, the ratings were higher for finishes on the saw-textured bevel siding. Note that three ratings are marked with a superscript "d" [general appearance ratings for saw-textured surface for D-1, D-2, D-3, and D-6 exposed near Gulfport (Table 6)].
The service life for all finish systems obtained from the "cracking" and "general appearance" ratings show that the performance of all finishes on the saw-textured bevel siding was about the same for Group C (no WRP, Table 5) and Group E (with WRP, Table 7).
Because ferrous oxides are soluble and can be a source of bleed-through discoloration when used for exterior applications, an experiment was conducted on the remanufactured Douglas-fir bevel siding millwork to determine if bleed-through would be a problem in the reuse of this material.
This effort proved to be a challenge given that the profiles produced in this project could not be viewed as completely "ready-to-use." This is especially true for the bevel siding, which would require repair or filling of nail holes prior to exterior installation.
initial Piece Produced Percentage of Profile piece length count length total length (m [ft]) (m [lf]) (%) T & G flooring 1.5 [4.8] 924 913.5 [2,997] 53.4 V-groove paneling 2.2 [7.1] 85 215.5 [707] 12.6 Bevel siding 4.4 [14.3] 148 580.3 [1,904] 34.0 Table 4.
See also: Wood