TAMKO SA User Manual

ALTERNATE

APPLICATION

The instructions below are alternatives

to steps #4 - 7.

TAMKO

SELF-ADHERED

ROOFING SYSTEM

TAMKO® SA BASE

Self-Adhering SBS
Modifi ed Base Sheet

DESCRIPTION

TAMKO SA BASE is a fl exible, fi berglass reinforced, self-adhering
rubberized asphalt sheet membrane with a polymer fi lm on the surface and
a removable treated release fi lm on the adhesive side.

8

6” end laps should be handled as follows:
Apply the next roll by using a 4-6” bead of
TWM-1 Mastic, as pictured above. Apply an
additional bead of adhesive at the T-joint for
added protection against moisture infi ltration. Roll
end lap to ensure a solid contact. Make sure to
remove zip strip from bottom sheet.

9

After removing the release liner be sure to remove
zip strips from bottom sheet and from selvedge
edge on previous course as you apply the end
lap. Roll end lap to ensure a solid contact. As
you continue up the roof, apply additional courses
being sure to overlap all side laps by 3” and all
end laps by 6”. To avoid lining up end laps on
subsequent courses, TAMKO recommends a
minimum stagger of 18”.

Alternate

Step

4

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.

Alternate

Step

5

The split release allows for application
of only one half of the membrane at a
time.

Alternate

Step

APPLICATION INSTRUCTIONS

USES

TAMKO SA BASE is used in TAMKO SA roofi ng systems along with the
SA CAP sheet. SA BASE can be easily applied by removing the split
release fi lm from the adhesive side and pressing the base sheet’s self
adhesive back surface into place. Alternatively, TAMKO SA BASE can be
mechanically fastened.

PRODUCT DATA

Reinforcement: Fiberglass Mat
Asphalt Modifi er: SBS
Roll Weight: 70 lbs (31.8kg)
Roll Size: 65’-10” x 39-3/8” (20.1m x 1m)
Product Thickness: 61 mils
Coverage: 2 square

1

TAMKO® SA CAP

Self-Adhering SBS
Modifi ed Cap Sheet

DESCRIPTION

TAMKO SA CAP is a lightweight, highly fl exible dual coated SBS modifi ed
cap sheet constructed with a non-woven polyester mat, self-adhering
adhesive, a split removable release fi lm on the adhesive side, and is
surfaced with ceramic granules for protection from ultraviolet degradation.

USES

Roofi ng membrane and fl ashing membrane in low sloped residential
applications and fl ashing details. This cap sheet is easily applied by
removing the split release fi lm from the adhesive side and pressing the
membrane’s self-adhesive back surface into place.

PRODUCT DATA

Reinforcement: Polyester Mat
Asphalt Modifi er: SBS
Roll Weight: 88 lbs (39.9kg)
Roll Size: 33’-6-1/4” x 39-3/8” (10.2m x 1m)
Product Thickness: 142 mils
Coverage: 1 square

1

10

Walk the membrane and roll the edges with a
roller to promote proper adhesion.

JP53813

6

Apply the top half of the sheet fi rst by
removing the release fi lm. Then apply
the bottom half of the roll. In subsequent
rolls when applying the bottom half
simultaneously remove the zip strip and
the bottom half of the release fi lm. Be
sure to overlap sidelaps by 3”.

Rev. 10/12/07

220 West 4th Street,

Joplin, Missouri 64802

1-800-641-4691

tamko.com

1

All values stated as nominal

CAUTION: The National Institute for Occupational Safety
and Health (NIOSH) has concluded that fumes of heated
asphalt are a potential occupational carcinogen. Do not
burn these products.

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.

12 "

8"

8"

TAMKO SA Base Sheet Nailing Pattern

• 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.

12 "

How to Apply TAMKO’s
Self-Adhered Roofi ng System

General Application Instructions

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.

4

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.

1 2 3

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).

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.

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.

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.

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.

WARNING:

APPROPRIATE FALL

PROTECTION METHODS

SHOULD BE USED WHENEVER

WORKING ON ROOFS.

PRODUCT MAY BE SLIPPERY

WHEN WET.

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.