• Lightweight; Less than 2.5 lbs per square
• Can be left exposed for up to three months
• More coverage per roll than traditional felt
• Good pliability and low temperature flexibility
• Pre-printed lay lines for easy installation
• Algae, fungi, and mold resistant; does not rot or decay
• 100% recyclable
• Meets and/or exceeds ASTM D226 Type I and II
• Florida Building Code Approval FL #16884
• Texas Department of Insurance (TDI) approved

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• Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment must be stored in a dry location.
• Rolls must be stored on pallets and not more than one pallet high.
• Do not store rolls in direct sunlight.

• Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment shall be installed in strict compliance with applicable Building Code.
• Follow Occupational Safety and Health Administration (OSHA) safety standards; use common sense measures and adequate precautions to prevent accidents.
• Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment is considered a vapor barrier.  Proper ventilation is critical.  Ensure installation does not interfere with existing ventilation.  
• Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment shall not be torched or hot mopped to.
• On slopes less than 4:12, a double layer of
• Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment is recommended.  Double layer application is best achieved by using 24" side laps, making sure the side laps are “shingled in” to shed water.
• Ensure that sharp objects such as debris, stones, bricks, etc. are not dropped on to the Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment surface so as to avoid possible cuts or tears.

• When tin tags/caps are used to secure Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment, the material shall be covered immediately after application with an approved underlayment or a suitable roof covering.
• The use of staples to attach Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment is not permitted.
• Apply a thin coat of asphalt-based roofing cement to areas of Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment with any cuts or tears.
• Do not use staples to attach Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment.  Use of staples will void the warranty.
• Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment is not intended to be used as the primary weather resistant roof covering.

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• The substrate shall be clean and dry prior to installing Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment.
• For re-roofing, all old roofing and other loose materials must be removed prior to installation.

• Place a full width piece of Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment parallel to the eave (low) edge of the roof.
• Unroll the material 2 to 3 feet and position the end of it to the edge of the eave and rake.
• Install a few fasteners near the rake and roll out the sheet to a manageable length.
• Straighten and align the sheet to eliminate any wrinkles.
• Fasten the sheet using 3/8" headed roofing nails or 1" plastic capped nails, spaced 9" o.c. at all laps and two staggered rows fastened 12" o.c. in the field, or as per applicable Building Code.  In HVHZ jurisdictions, the sheet shall be fastened 6" o.c. at all laps and three staggered rows fastened  12" o.c. in the field of the sheet.
• When using 1" diameter nails, apply such that the head of the nail is flush with the sheet surface, without cutting into the sheet.
• Fasten the sheet from the top edge to avoid walking or kneeling on the unsecured portion.
• Align the next sheet over the preceding sheet so as to form a minimum 4" side lap and 8" end lap or as per applicable Building Code.  
• Then install the sheet as per instructions above.  Install such that the bottom of the second course is over the top of the first course so that any water will flow over the underlayment.
• Stagger the end laps a minimum of 36" (3 feet) from the preceding course.
• Install Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment a minimum of 6" up any vertical surfaces.
• Tarco LeakBarrier EasyLay UDL 15 synthetic underlayment used in valley areas must be covered with metal or other valley liners.
• Seams or joints that require adhesive or sealant can be treated with plastic cement.
• Flash vent pipes, stacks, chimneys, and penetrations in compliance with applicable codes.

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