TAMKO SA - Manual (Page 2)

DECK REQUIREMENTS
The deck must be built with a nominal 1/2”
exterior wood decking.
• All wood products must be properly conditioned
to be at moisture equilibrium. Failure to use proper
conditioned deck materials may result in deck
movement, which will distort the overlying roofi ng
materials.
• Distortion of roofi ng materials as the result of
deck movement is not a manufacturing defect of
the roofi ng product.
• Roof must have a positive slope with no ponding
water.
• Inclines over 3/4”:12 will require the SA membrane to be nailed at 6” intervals across the top of the
sheet using standard roofi ng nails and a minimum 1” tin plate or 1” capped nails (plastic or metal)
of adequate length to penetrate 1/2” into the roof deck.
• Proper ventilation is required. (Refer to FHA minimum property standards for ventilation)
• Remove all existing roofi ng materials, dust, dirt, loose nails, and other debris from the deck prior to
installation.
• For best application, prime exterior wood decking with ASTM D 41 primer. Primer should be allowed to
dry to the touch per the primer manufacturerʼs instructions, before applying the base sheet.
• Caution: Apply materials only in fair dry weather when the interface temperature (air, roof deck, membrane) is a minimum of 45ºF and rising.
• TAMKO SA Base and SA Cap should be stored in temperatures above 45° F. If TAMKO SA Base and SA Cap have been stored in temperatures below
45° F, the materials must be restored to a temperature above 45° F prior to installation.
1 2 3
Install metal drip edge at the rakes and eaves.
• All metal must be cleaned, to ensure excess surface
contaminates are removed, or all metal must be
lightly primed with an ASTM D 41 primer.
•
Install metal drip edge at the rakes and eaves and nail
on 4” centers.
Roll out TAMKO SA Cap Sheet. Position it with the
selvedge on the high side of the slope. Aligning it on the
lower edge of the roof.
• Both the TAMKO SA Base Sheet and the TAMKO SA
Cap Sheet must be installed in the same day.
4 5 6 7
Pull the release fi lm from the center to each edge on a 45˚
angle to expose the adhesive 1 to 2 feet.
Press adhesive side into base sheet and roll with a small
hand roller to assure solid contact. Roll up remaining SA Cap until the edge of the release
fi lm is exposed. Begin pulling the release fi lm up and off
the roll. Once the entire sheet is in place, roll or walk the
membrane to ensure solid contact with the base sheet.
Cut in half one ply of the 39-3/8” wide TAMKO SA Base
Sheet to 19-11/16” width. Starting at the low point of the
roof, remove the release fi lm and install this half sheet at a
right angle to the slope. Then install a full 39-3/8” wide sheet side lapped 2” and end
lapped 4”. Remove release liner to adhere SA Base. Be
careful to offset the end laps a minimum of 18”. If TAMKO
SA Base nailing is required by local codes, see Alternate
Nailing Application for SA Base.
Alternate Nail Application for SA Base (See Special
Application Requirements and TAMKO SA Base Sheet
Nailing Pattern.) Apply subsequent base sheet courses
with 2” side laps and 4” end laps. Nail sheets along the lap
at intervals of no more than 8”, and stagger-nail down the
center of the sheet on 8” centers using standard roofi ng
nails and a minimum 1” tin plate or a 1” capped nail (metal).
Information included in these application instructions was current at the time of printing. To obtain a copy of the most current version of these application instructions, visit us online at www.tamko.com or call us at 1-800-641-4691.
General Application Instructions
How to Apply TAMKO’s
Self-Adhered Roofi ng System SPECIAL APPLICATION REQUIREMENTS FOR
AREAS/ZONES REQUIRING WIND UPLIFT RATINGS
Check and follow local building codes for applicable Product Testing and
deck assembly requirements.
This section includes Special Application Requirements for Areas/
Zones requiring wind uplift ratings.
IMPORTANT
The following assembly was used to test for compliance with UL 1897
to obtain a 45 psf wind uplift resistance rating:
Mechanically Fastened Base Sheet and Fully Adhered Cap Sheet
System.
• Wood supports (Joists or Rafters): nominal 2” x 10” deep wood
framing members, No. 2 grade Spruce-Pine-Fir, 24” OC spacing.
• Deck: Minimum 15/32” B- C APA Rated plywood sheathing
• Fasteners used to attach the plywood deck to the joists:
2” long, No. 8 course thread screws, spaced 6” OC at the
plywood edges and 12” OC in the fi eld of the plywood.
• TAMKO SA Base Sheet with 2” side seam mechanically
fastened with 1-1/4” long cap nails with 1” diameter metal
cap: 8” OC in seams and two rows 8” OC in fi eld, staggered.
8" 12
"
12
"
8"
• TAMKO SA Cap Sheet is fully-adhered to SA Base Sheet using self-
adhesive
back.
• Be sure to sweep the Base Sheet prior to installation of the
Cap Sheet to help remove dust or dirt and help promote full
adherence.
• Walk the Cap Sheet and roll the edges with a roller to help
promote proper adhesion.
IMPORTANT
The following assembly was used to test for compliance with UL 1897
to obtain a 105 psf wind uplift resistance rating:
Primed Deck and Fully Adhered Base Sheet and Cap Sheet System.
• Wood supports (Joists or Rafters): nominal 2” x 10” deep wood
framing members, No. 2 grade Spruce-Pine-Fir, 24” OC spacing.
• Deck: Minimum 15/32” B-C APA Rated plywood sheathing
• Fasteners used to attach the plywood deck to the joists: 2” long,
No. 8 course thread screws, spaced 6” OC at the plywood edges
and 12” OC in the fi eld of the plywood.
• Deck Preparation: Deck should be primed with TAM-PRO
813 Quick Dry Primer at a rate of 3/4 gallon per square. Follow
primer application instructions on the product label. Drying time
ranges from 30 minutes to 4 hours depending on variations in
atmospheric conditions.
• TAMKO SA Base Sheet with 2” side seam is fully-adhered directly
to primed deck using self-adhesive back of base sheet.
• TAMKO SA Cap Sheet is fully-adhered to SA Base Sheet using
self-adhesive back of cap sheet
• Be sure to sweep the Base Sheet prior to installation of the Cap
Sheet to help remove dust or dirt and help promote full
adherence.
• Walk the Cap Sheet and roll the edges with a roller to help
promote proper adhesion.
TAMKO SA Base Sheet Nailing Pattern
THESE ARE THE APPLICATION
INSTRUCTIONS FOR THE SA
BASE AND CAP ROOFING
SYSTEM. TAMKO BUILDING
PRODUCTS, INC. SHALL
NOT BE RESPONSIBLE FOR
LEAKS OR OTHER ROOFING
PROBLEMS RESULTING FROM
FAILURE TO FOLLOW THESE
INSTRUCTIONS. For questions
about or their application contact
TAMKO’s Technical Services
Department at 800-641-4691.
WARNING:
APPROPRIATE FALL
PROTECTION METHODS
SHOULD BE USED WHENEVER
WORKING ON ROOFS.
PRODUCT MAY BE SLIPPERY
WHEN WET.