This sheet of Three
Tab Shingles is made of a water proof gasket material. Each sheet
is 8-1/4" x 10-1/2", with 16 rows of shingles. The rows
are laid with a 1/4" overlap, so each sheet will cover 42
square inches of roof.
Carefully cut the
rows apart. Start at the bottom edge of each roof surface. The
1/4" strip along the bottom of the sheet is used at the lower
edge as a starter course. Glue each row to the subroof with a
waterproof adhesive, oriented with the notches down. Make sure
that the tabs are glued well, or they may curl up with age. Overlap
each row to the top of the notches in the lower row, parallel
to the bottom edge. Real roofing is laid with a 1/3 tab lateral
offset on each row, so that the notches only line up on every
third row. Roof edges are best protected with an edge molding
made of angle. 1/8" x 1/8" brass angle works well for
this molding. Roof peaks are capped using full tab pieces cut
from the rows. Roof valleys can be underlaid with a strip of building
paper, or by overlapping the coarses of shingles on each roof
surface. Check with prototypical roofing methods.
The sample below shows
how the shingles are laid. The right third has been spray painted
for color, and the middle section has been stained with Minwax
Walnut.