MOISTURE GUARD PLUS
®
Ice & Rain Protective Underlayment
APPLICATION INSTRUCTIONS
MOISTURE GUARD PLUS
UNDERLAYMENT FIELD APPLICATION
VALLEY FLASHING
DETAIL
©
2013 TAMKO Building Products, Inc. TAMKO
®
and MOISTURE GUARD PLUS
®
are a registered trademark of TAMKO Building Products, Inc.
tamko.com
Corporate 220West4thStreet,Joplin,Missouri64801 800-641-4691
CentralDistrict 220West4thStreet,Joplin,Missouri64801 800-641-4691
NortheastDistrict 4500TamkoDrive,Frederick,Maryland21703 800-368-2055
SoutheastDistrict 230035thStreet,Tuscaloosa,Alabama35401 800-228-2656
SouthwestDistrict 7910SouthCentralExpressway,Dallas,Texas75216 800-443-1834
WesternDistrict 5300East43rdAvenue,Denver,Colorado80216 800-530-8868
SURFACE PREPARATION
To begin, remove any dust, dirt, loose nails or other protrusions from the deck of new roofs. Remove all shingles, roong felt, nails, or other
existing roong materials and debris from the deck of existing roofs. Sweep thoroughly to remove any dust and dirt. For best application, apply
MOISTURE GUARD PLUS only in fair weather and when air, substrate, and membrane temperatures are above 35° F.
FOR ROOF DECKS
Apply MOISTURE GUARD PLUS from low to high in shingle fashion as shown below, so that laps will shed water. Overlap edge seams
3-1/2". End seams should be overlapped 6" and staggered. When necessary, the membrane may be unrolled and cut in 10- to 15-foot lengths.
Align the membrane on the lower edge of the roof deck. Remove the release lm from the membrane then press the membrane into place. Roll
lower edges of each course rmly with a wallpaper roller or other hand roller; "Broom in" the installed membrane using an industrial at broom
or squeegee. Bear down on the installed membrane with the broom or squeegee to insure total, even adherence to the substrate. Care should be
taken not to damage the surface when brooming. For ice dam protection, MOISTURE GUARD PLUS must be applied to reach a point above
the highest expected level of ice dams (minimum application at least 24" beyond the interior wall line.)
FOR VALLEYS AND RIDGES
Where necessary, the membrane may be unrolled and cut into 4- to 6-foot lengths. Peel the release lm and center sheet over valley or ridge.
Drape and press sheet into place, working from the center of the valley or ridge outward in each direction. For valleys, apply the membrane
starting at the lowest point and work upward. Overlap all sheets a minimum of 6 inches. The MOISTURE GUARD PLUS underlayment should
be used on "closed valley" applications only. It must be covered by roong materials. MOISTURE GUARD PLUS underlayment must not be
exposed to the elements longer than 90 days before application of the finished roof.
THESE ARE THE APPLICATION INSTRUCTIONS FOR MOISTURE GUARD PLUS UNDERLAYMENT. TAMKO BUILDING
PRODUCTS SHALL NOT BE RESPONSIBLE FOR LEAKS OR OTHER ROOFING PROBLEMS RESULTING FROM FAILURE TO
FOLLOW THESE INSTRUCTIONS. For questions about MOISTURE GUARD PLUS or it's application contact TAMKO's Technical
Services Department at 800-641-4691.
PROVIDE VENTILATION WHEN USING OVER THE ENTIRE ROOF DECK
When using MOISTURE GUARD PLUS underlayment over the entire roof deck the roof must include a system to provide adequate
ventilation for all space immediately below the roof deck. Such ventilation system should be designed in accordance with architectural
design standards appropriate to the size, nature, and location of the structure and should include both ridge and soft venting. For further
information on providing adequate ventilation, contact your architect, building contractor, building materials supplier, or TAMKO.
IMPORTANT:
Tiles can slide during roof loading and until properly fastened. In order to protect MOISTURE GUARD PLUS underlayment
from damage, care must be taken to insure stability of stacked tiles. Fasteners and batten strips must be used when installing
tiles over MOISTURE GUARD PLUS underlayment. TAMKO requires the fastening of every tile in addition to mortar, or
adhesive or foam regardless of the slope. These are TAMKO's minimum requirements. State and local registrations may contain
additional requirements.
SAFETY PRECAUTION
Personal fall protection devices should always be used when applying MOISTURE GUARD PLUS. Moisture, frost or debris may
decrease the traction while walking on MOISTURE GUARD PLUS. PLEASE EXERCISE CAUTION DURING INSTALLATION.
(12 pages)
(8 pages)
(8 pages)
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