This section is from the book "Cyclopedia Of Architecture, Carpentry, And Building", by James C. et al. Also available from Amazon: Cyclopedia Of Architecture, Carpentry And Building.
The final painting of the exterior will naturally begin with the roof and be carried downward so that portions already done will not be spattered by subsequent operations. If the roof shingles are to be painted or stained they should have been dipped in the paint or stain for a distance of at least two-thirds from the butt, before being laid. This is a tedious process but is well worth the extra trouble and expense. Another method is to paint each course of shingles as it is laid, but this is fully as objectionable a process as dipping. In either case the coloring of the roof shingles will have become hard by the time the walls are painted so that there will be no staining of the work below.
Fig. 93. Quarter Sawing.