SlopeShield Plus Self-Adhered Installation

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OVERVIEW

  • SlopeShield Plus Self-Adhered roofing underlayment protects the roofing assembly by allowing vapor to pass through (breathable) but not air or liquid — mitigating costly moisture damage and saving energy for the life of the building
  • SlopeShield Plus Self-Adhered is installed on steep slope roofs of 2:12 (9.46 degrees) or greater pitch.
  • SlopeShield Plus Self-Adhered consists of a spun-bond polyester fabric with proprietary coatings on the top and underside utilizing Vapor Permeable Polymer Composite Technology (VPPCT™). The top coating is slip resistant and UV-stable. The underside is a fully self-adhered adhesive protected by a siliconized release film, which is removed during installation.

ROOFING SYSTEM COMPATIBILITY

SlopeShield Plus Self-Adhered roofing underlayment can be installed under a variety of roofing systems including:

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Standing Seam Metal Roof

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Cedar Shingles/Shakes with VaproMat Drainage Matrix

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Slate/Clay Tile with Batten/Counter-Batten Substructure

COMPATIBLE ROOF DECK SUBSTRATES

  • Gypsum-based Roof Sheathing
  • Rigid Insulation
  • Concrete
  • Plywood
  • Cross Laminated Timber (CLT)
  • Nail Laminated Timber (NLT)
  • Dowel Laminated Timber (DLT)
  • Pre-painted Steel
  • Galvanized Metal
  • Aluminum (Painted/Mill Finish)

*For OSB and OSB factory-coated products contact VaproShield Technical.

SUBSTRATE INFORMATION

  • Verify that surfaces and conditions are ready to accept the work of this section. Notify [engineer] [architect] [consultant] in writing of any discrepancies.

  • Mechanical fasteners used to secure sheathing boards, insulation or penetrate roof deck shall be set flush with surface and fastened into solid backing.

  • All surfaces must be clean and dry to the touch and in “as new condition;” sound, clean and free of oil, grease, dirt, or other contaminants.

  • Do not install SlopeShield Plus Self-Adhered membrane when ambient temperatures are below 20°F (-6°C)

DELIVERY, PACKAGING AND STORAGE

  • Store roll materials vertically on end in original pack­aging at temperatures between 40°F and 120°F (4ºC - 49ºC).
  • Protect materials from direct sunlight and inclement weather until ready for use.

INSTALLATION BEST PRACTICES

  • Primer is NOT required or recommended
  • Plan the installation and layout of SlopeShield Plus Self-Adhered PRIOR to application to minimize waste
  • Ensure substrate fasteners are flush with surface and fastened into solid backing
  • Roll out material with release film intact, check for proper alignment, reposition, and align as required
  • Pre-cut SlopeShield Plus Self-Adhered membrane to desired manageable lengths prior to removing release film. At bottom of roof allow for excess material to accommodate wall WRB/AB connects.
  • Snap chalk lines for alignment guidance
  • Align and place exposed membrane into position use hand pressure to adhere membrane to substrate
  • Re-roll material back to starting location with release film intact
  • Keep SlopeShield Plus Self-Adhered membrane and release film in contact with deck as you pull the release film.
  • Pull release film and smooth out air bubbles with soft bristle push broom
  • Roll underlayment with two-handed roller to ensure proper adhesion to substrate
  • Install in an overlapping shingle fashion, with the upper courses overlapping the lower courses to shed water down the roof.
  • AVOID EXCESSIVE FOOT TRAFFIC on installed SlopeShield Plus Self-Adhered roof underlayment
  • Avoid construction material storage on installed SlopeShield Plus Self-Adhered roof underlayment
  • For Roofing Penetration Details and to ensure water and air tight details around penetrations (skylights, curbs etc.), refer to VaproShield.com.

LIMITATIONS

  • SlopeShield Plus Self-Adhered should be covered within 180 days (6 months) of installation with permanent roofing material.
  • SlopeShield Plus Self-Adhered Roofing Underlayment Sheet is not intended to be the primary liquid water hold out system or temporary roof covering. Cover membrane as soon as practical.
  • Minimum recommended application temperature of 20˚F (- 6.0˚C) and rising.
  • For roof slopes below 2:12 (9.46 degrees) contact VaproShield Technical for required approval.

SAFETY

  • Persons who access any roofs, involved with roof construction, repair or maintenance shall use appropriate personal protective equipment including, but not limited to, hard hats, eye protection, and leather gloves and must be trained on safe practices relevant to their work.
  • Where the use of ladders, scaffolds, platforms, or temporary floors are utilized, safety lines and safety harnesses shall be used. Please access the OSHA Web site at www.osha.gov, contact your local OSHA office, or visit the local federal bookstore to obtain the most current information on OSHA 29 CFR 1926. 

STANDING SEAM METAL ROOF

Best Practice Horizontal Installation Instructions

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1. Ensure sheathing is in “as-new” condition

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2. Install SlopeFlashing around eaves, extend­ing underlayment down and shingling over wall membrane, if required for air barrier continuity

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3. Install SlopeFlashing on roof gables, ex­tending underlayment down and shingling over wall membrane, if required for air barrier continuity

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4. Install metal flashing (by others) over SlopeFlashing

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5h. Horizontally install SlopeShield Plus underlayment across roof, starting at the bottom of the roof

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6h. Continue installation maintaining a minimum 3" overlap between runs

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7h. Install roofing material according to manufacturer's installation guidelines

 

 

SLATE/CLAY TILE WITH BATTEN/COUNTER-BATTEN SUBSTRUCTURE

Best Practice Horizontal Installation Instructions

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1. Ensure sheathing is in “as-new” condition

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2. Install SlopeFlashing around eaves, extend­ing underlayment down and shingling over wall membrane, if required for air barrier continuity

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3. Install SlopeFlashing on roof gables, ex­tending underlayment down and shingling over wall membrane, if required for air barrier continuity

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4. Install metal flashing (by others) over SlopeFlashing

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5. Horizontally install SlopeShield Plus underlayment across roof, starting at the bottom of the roof

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6. Continue installation maintaining a minimum 3" overlap between runs

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7. Install batten and counter batten roofing system under clay tiles according to manufacturer's installation guidelines

 

 

CEDAR SHINGLES/SHAKES WITH VAPROMAT DRAINAGE MATRIX

Best Practice Horizontal Installation Instructions

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1. Ensure sheathing is in “as-new” condition

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2. Install SlopeFlashing around eaves, extend­ing underlayment down and shingling over wall membrane, if required for air barrier continuity

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3. Install SlopeFlashing on roof gables, ex­tending underlayment down and shingling over wall membrane, if required for air barrier continuity

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4. Install metal flashing (by others) over SlopeFlashing

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5. Horizontally install SlopeShield Plus underlayment across roof, starting at the bottom of the roof

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6. Continue installation maintaining a minimum 3" overlap between runs

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7. Install VaproMat drainage matrix over SlopeShield Plus to create rain screen. Bottom row of VaproMat installed with selvedge folded under for insect infiltration protection. 

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8. Install VaproMat up roof, maintaining overlap between runs 

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9. Install cedar shingles over VaproMat as per manufacturer's installation guidelines. 

 


PENETRATIONS

For all penetrations: tool VaproLiqui-Flash evenly AT LEAST 2" onto face and AT LEAST 1" out along all sides of the penetration

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AIR BARRIER CONTINUITY

To achieve air barrier continuity, review venting requirements for roofing assembly.

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