Installation Guide

2
TAMKO BUILDING PRODUCTS LLC • P.O. BOX 97 • GALENA, KS 66739-0097 • 800-641-4691 • TAMKO.COM
APPLICATION INSTRUCTIONS FOR
HERITAGE
®
ARCHITECTURAL ASPHALT SHINGLES
TUSCALOOSA, AL
©2021 TAMKO Building Products LLC. TAMKO, TAMKO logo, Heritage, Moisture Guard, and Elite-Glass Seal are registered trademarks of TAMKO Building Products LLC.
Synthetic Guard and Synthetic Guard Plus are unregistered trademarks of TAMKO Building Products LLC. Rev. 08/23/2021
1. ROOF DECK
These shingles are for application to roof decks consisting of plywood, oriented
strand board (OSB) or sheathing boards capable of receiving and retaining
fasteners, and to inclines of not less than 2" per foot.
Shingles must be applied in strict accordance with the application instructions.
TAMKO assumes no responsibility for leaks or defects resulting from improper
application, or failure to properly prepare the surface to be roofed over.
STANDARD ROOF: For roofs having pitches equal to or greater than 4" per
foot and up to but less than 21" per foot (4:12 and up to but less than 21:12).
LOW-SLOPE: For roofs having pitches 2" per foot up to but less than 4" per
foot (2:12 up to but less than 4:12), refer to special instructions titled “Low
Slope Application.”
MANSARD ROOF OR STEEP SLOPE: For roofs having pitches equal to or
greater than 21" per foot, refer to special instructions titled “Mansard Roof
or Steep Slope Roof.”
NEW ROOF DECK CONSTRUCTION: Roof deck must be smooth, dry and
free from warped surfaces. It is recommended that metal drip edges be
installed at eaves and rakes.
PLYWOOD: All plywood shall be exterior grade as defined by APA - The
Engineered Wood Association. Plywood shall be a minimum of 3/8"
thickness and applied in accordance with the recommendations of APA - The
Engineered Wood Association.
ORIENTED STRAND BOARD: Oriented strand board shall be exterior grade
as defined by APA - The Engineered Wood Association, minimum 7/16"
thickness, APA-rated in accordance with Voluntary Standard PS 2 and
applied in accordance with the recommendations of APA - The Engineered
Wood Association.
SHEATHING BOARDS: Boards shall be well-seasoned tongue-and-groove
boards and not over 6" nominal width. Boards shall be a 1" nominal minimum
thickness. Boards shall be properly spaced and nailed.
2. VENTILATION
Inadequate ventilation of attic spaces can cause accumulation of moisture
in winter months and a build-up of heat in the summer. These conditions
can lead to:
1. Vapor condensation.
2. Buckling of shingles due to deck movement.
3. Rotting of wood components.
4. Premature failure of roof.
To ensure adequate ventilation and circulation of air, the ventilation
system must include inlets and outlets. This may be accomplished with
a combination of ridge and soffit vents or by using gable end vents. FHA
minimum property standards require one square foot of net free ventilation
area to each 150 square feet of space to be vented.
This may be reduced to one square foot of ventilation area per 300 square
feet if at least 40% and not more than 50% of venting is provided not more
than 3 feet below the ridge and if a Class I or II vapor barrier is installed
on the warm–in–winter side of the ceiling in climate zones 6, 7, and 8
as recommended by the 2018 International Residential Code. For more
information consult your design professional. If the ventilation openings
are screened, the total area should be doubled.
IT IS PARTICULARLY IMPORTANT TO
PROVIDE ADEQUATE VENTILATION.
3. FASTENERS
NAILS: TAMKO requires the use of nails as the method of application.
Standard type roofing nails should be used. Nail shanks should be made
of minimum 12 gauge wire, and a minimum head diameter of 3/8". Nails
should be long enough to penetrate 3/4" into the roof deck. Where the
deck is less than 3/4" thick, the nails should be long enough to penetrate
completely through decking and extend at least 1/8" through the roof deck.
Drive nail head flush with the shingle surface.
WIND CAUTION: Extreme wind velocities can damage these shingles after
application when proper sealing of the shingles does not occur. This can
especially be a problem if the shingles are applied in cooler months or in
areas on the roof that do not receive direct sunlight. These conditions may
impede the sealing of the adhesive strips on the shingles. The inability to
seal down may be compounded by prolonged cold weather conditions and/or
blowing dust. In these situations, hand sealing of the shingles is required. To
ensure quicker sealing, apply 4 quarter-sized dabs of any adhesive meeting
ASTM D4586, Type I, on the back of the shingle 1" and 13" in from each
side and 1" up from the bottom of the shingle. Press shingle firmly into the
adhesive. For maximum wind resistance along rakes, install any TAMKO
starter shingle including sealant or cement shingles to the underlayment
and each other in a 4" width of any adhesive meeting ASTM D4586, Type I.
Caution: Apply ONLY a thin uniform layer of adhesive less than 1/8" thick.
Excessive amounts can cause blistering of the shingles and may soften the
asphalt in certain underlayments resulting in the asphalt flowing, dripping
and staining. Shingles must also be fastened according to the fastening
instructions described below.
CAUTION: Fasteners must not be driven
into the edge of the common bond area.
Properly Driven
3/8” min diameter
underdriven
overdriven
Improperly Driven
crooked
Asphalt
Shingles
Deckin
g
inadequate
anchorage
too deep, cuts
into shingle
inadequate
penetration
straight, good penetration,
and flush with shingle surface
1/4” nominal
1/2”
3/4” min