Roofing Black Underlayment Paper , 36in*144ft Tar Paper Under Underlay

36in*144ft Paper Based Asphalt Roofing Felt Bitumen Roll Roofing Underlayment

Introduction:

#15 Felt Roof Underlayment provides an extra layer of protection between your shingles and your roof deck. This underlayment features excellent asphalt saturation for effective waterproofing.

Characteristic:

• Lays flatter - heavy-duty design minimizes the wrinkling that can occur with cheaper felts
• Better protection - superior asphalt saturation means improved waterproofing
• Easier application - accurate lay lines allow for easier, more consistent shingle application
• Safer - preferred by many contractors for its superior slip-resistance, especially in warm climates
• Code compliant - meets ASTM D-226/4869
• heavy organic mat ( gram weight range from 200g ---1000g)
• high asphalt saturation (100%, 120%, 150%)
• heavier roll weight (range from 6kg--23kg)
• tightly wood roll lengths
• excellent standard packaging
• 

Installation:

Do not walk on the  felt that is not securely fastened to the roof. Always use proper safety equipment during installation. Roofing felt should be installed from the bottom of the roof in horizontal layers to increase the ability of the rain water to shed off the felt. The initial layer of the felt should be installed to cover the bottom edge of the decking, from edge to edge. Overhang is not required. Position the felt and anchor the top corner, then roll the felt out across the roof. Be sure to roll the felt smoothly to avoid wrinkles. The top edge of the felt should be fastened approximately every eight inches, as well as, the middle and bottom edge. The second layer should overlap the first layer to the 2” lap line. If the roll of felt should run out before you reach the edge of the roof, then overlap the previous felt 4” with the new roll (end lap). The fastening pattern used on the first layer should be used on all subsequent layers. If you do have wrinkles, slice the wrinkles with a utility knife and fasten them flat to the deck. If the primary roof is not installed immediately, seal the cuts with waterproofing cement.

Storage/Care:

Organic Felt rolls must be installed horizontally, from the bottom of the roof deck. The first layer of Felt rolls must be installed to cover the entire bottom edge of the roof deck to facilitate the water shedding ability of the Felt.  Anchor the top corner of the Felt roll after it has been properly positioned in place; then spread the roll across the roof. Care must be taken to roll out the Felt smoothly and to avoid any wrinkles as the Felt is unrolled across the roof. Install fasteners at least eight inches at the top and middle edges and at the eave along the deck.  At slopes between 2:12 and 4:12 pitch, install a double layer of Felt as follows. Apply a minimum 19 inch wide strip of Felt parallel to and starting at the eaves, fastened sufficiently to hold in place. Starting at the eave, apply a full width Felt roll, overlapping successive sheets 19 inches, fastened sufficiently to hold in place.  At slopes 4:12 and greater, a single layer of Felt rolls shall be installed parallel to and starting at the eaves, over lapped at least two inches, and fastened sufficiently to hold in place.  The second course of Felt should be aligned with the roof edge and overlap the first course as described above, according to the roofing slope. Fasten the Felt to the deck and repeat the pattern.  Continue to install the next course of Felt from the roof edge and overlap with the previous course as described above, according to the roof slope. If a new roll is required to complete the installation to the end of the roof, overlap the new roll over the prior roll by at least four inches. Use the same fastening pattern for the top, the middle and the bottom of the roll for all subsequent courses.  The top of each subsequent course should be fastened intermittently to hold the edge in place until the next course is applied. Make certain to secure the fasteners at the bottom of the next course to hold the top of the previous course.  Continue this pattern until the top of the roof. Fasten the top course if it terminates at the top edge of the roof. Otherwise, overlap the Felt over the ridge and fasten it. Repeat the process from the bottom of the other side of roof deck as described above, depending on the slope of the roof.  In valleys, lay a vertical section of the Felt in the middle, along the length of the valley prior to installing a horizontal course of the Felt. If more than one section of Felt is installed in the valley, start at the bottom and overlap the top section by at least two inches to ensure proper shedding of water.  Fasten the Felt in the valleys using the same pattern, taking care to avoid wrinkles. If wrinkles are formed while fastening the Felt, slice the wrinkles and fasten them flat to the deck. Then seal the cuts with waterproofing cement.

Dimensions Guide:

ASTM D-4869 15#

Item weight: 35 lbs.

Item weight: 15.87kg

Item length: 144ft or 43.89m

Item width: 3ft or .91m Square ft.: 432 (4 squares)

ASTM D-226 15#

Item weight: 50 lbs.

Item weight: 22.7kg

Item length: 144ft or 43.89m

Item width: 3ft or .91m Square ft.: 432 (4 squares)

Specification: