"Z" Laminated Shingles
fiberglass asphalt laminated shingles produced by BP known as Harmony includes the
Harmony "Z" 30.
The narrower cut and high contrast colour drop enhance the
uniform tab cut
look of Harmony "Z". A better cedar shake re-roof replacement
offering by BP is the Harmony Z 40 in colours such as Stonewood, or
Weathered Rock. That is because for a nominal amount more in purchase
cost ( about $0.25/sq.ft. material and $0.15 / sq.ft. labour), they
deliver a substantially greater thickness and appeal. This is important
because when your home's well-textured cedar shakes are removed, you
need to replace them with a roofing product as thick and textured as
possible, or risk loosing some of the architectural appeal that
attracted you to the home in the first place ( and future buyers). To
keep in theme with a cedar-shaked neighborhood, invest in as thick and
realistic roofing product as your budget allows, to keep up the value of
your neighborhood, and the overall market value of your home. Harmony Z
40 year shingles are not stocked on the west-coast at present and are
considered special order at this time.
All these shingles are produced in the standard nail
zone format of most laminated shingle manufacturers, but are offered at
cheap prices for cheap projects. If economy is desired, BP has a cheap
Laminated shingles are the fastest growing type of shingle available
today. This is because they offer a pleasing appearance, enhancing
the visual appeal of your project. However, laminated shingles have
traditionally provided the roofing contractor with a very small area in
which the fasteners must be placed (generally 1/2" to 3/4" ).
The average 25 square house requires over 6000 fasteners to install
the roof. Correct placement of so many fasteners in such a small area is
extremely difficult and time consuming. Most roofing crews are paid
"piece work rates" based on numbers of bundles installed, and
they tend to be in a real hurry to nail as fast as possible. Market
research indicates that a substantial majority of laminated shingle
roofs are not being installed correctly. Manufacturers require correct
installation for their warranties to be in effect.
Malarkey created "The Zone" to eliminate the conflict
between speedy installation and accuracy in fastener placement. Malarkey
laminated shingles equipped with "The Zone" have a nailing
area of 1.75", more than three times larger than other laminated
shingles. With the larger nailing area offered by "The Zone"
your contractor's crews can rapidly and accurately install the fasteners
so critical to a successful project. See the
Malarkey Fiberglass shingles page
for further information.
Voiding the manufacturer's warranty is not the only problem with
laminated shingles which are not correctly installed. One of the more
noticeable effects of poor fastener placement, especially on steep
roofs, is the possibility that the backing strip may slip out from
underneath the top layer of the laminated shingle, resulting in roof
failure, or at the very least, a very unsightly and probably leaky roof.
Another problem with laminated shingles without the "Zone"
is troughing. Troughing occurs where the laminated shingle transitions
from a two layer product to a single layer. When installing a non-zone
laminate it is not uncommon for nails to be driven just above the
critical area where the two layers end (note: this would be
considered an incorrect installation). This "pulls" the single
top layer of a laminated shingle down to the roof deck, creating a
trough. The troughing effect allows water to run sideways under the
shingle, resulting in leaks.
Shingles which feature "The Zone", in addition to providing
a much larger overlap area, are constructed with the underlying strip
being tapered. This eliminates troughing.
An additional advantage of products with "The Zone" is a
significant reduction in the possibility of "blow-back leaks".
A blow-back leak occurs when the rain seal (the glue line at the top of
the backing strip of laminated shingles) is breached. when this
happens, rain only needs to be blown up about 1/2" to get behind
most laminated shingles. This, when added to the troughing effect
referred to above, leads to additional leaks. To address this problem
Malarkey not only increased the size (tripled) of the overlap area, but
added a second rain seal line for increased protection from blow-back
The result is Malarkey's laminated shingles provide about twice
the protection of other laminated shingles.
No matter what criteria you use in selecting shingles for your next
project insist on their correct installation. We live in a
"rainforest" in this region, with stormy, windy, rainy, and
just plain wet weather attacking our homes. The risks associated with
incorrect application far outweigh any other consideration.
"The Zone" is a patented feature available on Malarkey laminated
shingles, and Malarkey licensed and authorized manufacturers.