View source for Johns Manville EPDM Membrane Installation Guidelines

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{| class="wikitable"
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| style="background-color: #ffffcc; column-width:100%" | '''Notice to the Reader''': 

The instructions provided below are reprinted from the manufacturer's own materials which were submitted to the '''''RoofStar Guarantee Program''''' for inclusion in this Manual.  The reader is urged to check these against current publications issued by the manufacturer, to ensure accuracy. 
|}

Manufacturer: <b>JOHNS MANVILLE CORPORATION</b> 

Contact Address: See Membership List in Section 1.

Product Group: <b>EPDM MEMBRANE</b>

<hr>

===Description===
JM EPDM (ethylene, propylene, diene monomer) elastomeric membrane is the key component used in Johns Manville roofing and waterproofing systems. The membrane is applied in large sheets to reduce field seams. Exceptional long-term elasticity permits the material to withstand normal building movement without cracking or tearing. It can withstand severe temperature fluctuations and prolonged ozone exposure and remain ultraviolet-stable under constant exposure to intense sunlight. The membrane is available in black reinforced or non-reinforced depending on the type of application. JM EPDM is manufactured in standard widths up to 12.19 m (40') and standard lengths up to 30.48 m (100'). Standard thicknesses are 1.11 mm (0.045"), 1.52 mm (0.060") and 2.28 mm (0.090"). Special sizes and thicknesses are also available.

====GENERAL====
:The roofing assembly / material information published in the <b>RCABC <i>Roofing Practices Manual</i></b> does NOT represent a complete set of the Manufacturer's published data, nor does it represent a detailed specification. The preparation of a detailed specification is the responsibility of the design authority.

<u>SYSTEM DESCRIPTIONS/RANGE OF APPLICATION</u>
# Use in commercial, institutional, and industrial construction.
# Used in new construction and re-roofing of existing roofs.
# Roofing applications include: Fully Adhered Roofing Systems, Ballasted Roofing Systems; and Mechanically Fastened Roofing Systems.
# Waterproofing systems can be applied to horizontal or vertical surfaces.


<u>DELIVERY, STORAGE AND HANDLING</u>
# Deliver and store materials in original package and containers with manufacturer's name, brand name and installation instructions intact.
# All materials, except membrane must be stored between +15.5&#176;C (+60&#176;F) and 26.5&#176;C (+80&#176;F).


<u>SITE CONDITIONS (CAUTIONS AND WARNINGS)</u>
# Prior to the use of any product, consult the manufacturer's safety data bulletin for application cautions and warnings.
# Do not use bitumen-based roof cement.
# Do not install EPDM membrane directly onto low melting point asphalt (CSA A123.4-M1979, Type 1or 2).
# Do not allow waste products (petroleum, grease, oil, solvents, vegetable or mineral oil, animal fats, etc.) or direct steam venting to come in contact with JM EPDM Systems.


<u>STANDARDS AND APPROVALS</u>
# Underwriters Laboratories: Listed.
# Factory Mutual: Various approvals listed.


<u>MANUFACTURER'S SERVICES</u>
# Technical Services: applicator training, technical seminars, field training, field inspections, and technical assistance are available.
# Specifications / Drawings: Systems Design and Review group to respond to daily design inquiries.


<u>WARRANTY</u>
# Warranty availability shall be limited to an RoofStar Five (5) or ten (10) Year system warranty with RGC inspection only.

====[[Johns Manville Corporation|MATERIALS]]====
{| class="wikitable"
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| style="background-color: #ffffcc; column-width:100%" | '''NOTE''': Regardless of the materials listed below or anywhere else in these manufacturer's guidelines, only materials accepted for use in the '''''RoofStar Guarantee Program''''', or accessories associated with those materials, may be used to qualify for a '''''RoofStar Guarantee'''''.  To see a list of the manufacturer's products accepted for use in the '''''RoofStar Guarantee Program''''', click on the link above.
|}

:The components of the JM Roofing Systems are to be products of Johns Manville.

<u>MEMBRANE</u>
# Non-reinforced JM EPDM membrane in 1.11 mm (45 mil.), 1.52 mm (60 mil.) and 2.28 mm (90 mil.). Used in ballasted and fully adhered applications.
# Reinforced JM EPDM membrane in 1.11 mm (45 mil.) and 1.52 mm (60 mil.). Used in fully adhered, ballasted and mechanically fastened applications.


<u>JM MEMBRANE ACCESSORIES</u>
:;Bonding Cement
::Bonds membrane to substrate. Solvent or water based.
:;Lap Caulk
::Seals edges of membrane or flashings.
:;Lap Cement
::Used to seal laps
::Peel & Stick T-Joint Patch
::Used for covering three-way membrane laps in field of roof.
::Peel & Stick Coverstrip
::Used for covering seams in some applications and stripping in.
::Peel & Stick Flashing
::Flashing for perimeters and penetrations
::Peel & Stick Inside / Outside Corner
::Flashing for corners
::Peel & Stick Pipe Boot
::Flashing for pipe penetrations
::Peel & Stick Pourable Sealer Pockets
::Flashing for irregular or ganged penetrations
::Peel & Stick RTS
::Reinforced termination strip. Secures membrane to perimeter.
::Peel & Stick Seam Tape
::Used to adhere membrane seams (laps).
::Peel & Stick Walkpad
::Membrane protection and walking path for high traffic areas
::Pipe Boot
::Flashing for penetrations
::Pourable Sealer
::Flashing for penetrations
::RTS
::Reinforced termination strip. Secures membrane to perimeter.
::Sealing Mastic
::Water cut-off
::Splice Cleaner
::Cleans membrane surface before adhering.
::Stone Mat
::Protection mat used with crushed stone.
::Tape Primer/Wash
::Cleans and primes rubber for peel and stick accessories and tapes.
::Uncured Flashing
::Flashing for perimeters and penetrations
::Walkpad
::Membrane protection and walking path for high traffic areas

<u>RELATED MATERIALS</u>
:;.1 Ballast:  
::Rounded water-worn gravel, steel-troweled smooth-surface paver blocks and abrasive-surface paver blocks, or crushed stone underlaid with Protective Mat are acceptable ballast.
:;.2 Wood Nailers: 
::Pressure-treated with salt preservatives.
:;.3 Thermal Barrier:
::19 mm (3/4") thick perlite or 15.9 mm (5/8") thick type &#8220;X&#8221; gypsum board may be used to provide a stable underlayment for the roofing system or to comply to code requirements.
:;.4 Vapour Retarder: 
::For protection of the insulation, a vapour retarder should be considered.

====EXECUTION====
<u>PREPARATION</u>
# Proper decking for the substrate shall be provided to receive the JM System.
# Substrates must be clean, smooth, dry, and free of fins, loose or foreign materials, oils, grease and roof cements.
# Ensure parapet substrates are suitable for adhering membrane flashings; where sheathing is required, plywood is strongly recommended, minimum exterior grade gypsum board (conforming to CSA A82.27-M1977) is required.
# Insulation must be compatible with roof membrane systems.
# Ensure plywood substrates are screwed (when EPDM applied directly over decks); alternatively, provide protection between nailed decks and membrane.


<u>FULLY ADHERED MEMBRANE</u>
# Position membrane and allow to relax for approximately 30 minutes.
# Fold sheet back exposing half of the underside; ensure fold is smooth without wrinkles or buckles.
# Apply bonding adhesive evenly without globs or puddles, using a 225 mm (9") wide plastic core short nap paint roller to both the sheet and the substrate.
# Allow adhesives to dry until tacky, but not stringy to the touch; roll coated membrane into the coated substrate, avoiding wrinkles.
# Brush down the bonded half of the sheet, fold back un-bonded half, and repeat the bonding procedure.
# Do not apply bonding adhesive to the splice area.
# Install adjoining sheet in the same manner, overlap edges a minimum of 75 mm (3").


<u>LOOSE-LAID MEMBRANE</u>
# Unroll and position membrane, allow it to relax approximately 30 minutes prior to splicing or membrane securement.
# Position adjoining sheets in same manner overlapping edges a minimum of 75 mm (3").


<u>MECHANICALLY FASTENED SYSTEM</u>
:Confirm that a wind design review has been completed and sheet layouts and fastening patterns have been approved for individual projects. Johns Manville will provide technical assistance as required.
:.1 Unroll and position membrane and allow it to relax approximately 1/2 hour.
:.2 Secure the membrane with JM in-seam plates as per Johns Manville published specifications.
:.3 Position adjoining sheets to allow a minimum overlap of 150 mm (6").

<u>SEAMS</u>
# Johns Manville JM EPDM systems are to be installed using TAPE ONLY seaming applications. Please refer to the JM application specification for complete installation.


<u>MEMBRANE SECUREMENT</u>
# Securement shall be provided at the perimeter of each roof level, and at any angle change where slope or combined slopes exceed 1:6 (2" in 12").
# Securement shall be with RTS and acceptable JM fastener.


<u>FLASHING</u>
# Complete all flashing detail and termination according to Johns Manville&#8217;s JM published specifications.


<u>FASTENERS</u>
#  
::a) High Load fasteners and plates
::b) High Load ASAP fastener
::c) UltraFast Fasteners and Plates
::d) UltraFast ASAP fasteners
::e) Structural Concrete Deck Fasteners and Plates
::f) NTD-1H &amp; 2H fasteners

<hr>

===Membrane Assemblies===
====JM Roofing System Fully Adhered Membrane Assembly====
Slope Limitation: No slope restrictions. 

<br>

<table cellspacing="0" cellpadding="2">
  <tr>
    <td style='border:1px solid black;' colspan="3"><u>ROOF ASSEMBLY</u></td>
  </tr>
  <tr>
    <td style='border:1px solid black;'><u>Components</u></td>
    <td style='border:1px solid black;'><u>Options</u></td>
    <td style='border:1px solid black;'><u>Comments or Cautions</u></td>
  </tr>
  <tr>
    <td style='border:1px solid black;' rowspan=4 nowrap>Roof Deck</td>
    <td style='border:1px solid black;' nowrap>Wood / Plywood</td>
    <td style='border:1px solid black;' rowspan="4">All defects in the deck must be corrected.  Membrane may be directly adhered to smooth    clean concrete, wood, or plywood decks.</td>
  </tr>
  <tr>
   
    <td style='border:1px solid black;' nowrap>Concrete</td>
  </tr>
  <tr>
    
    <td style='border:1px solid black;' nowrap>Steel</td>
  </tr>
  <tr>
   
    <td style='border:1px solid black;' nowrap>Fibrous Cement / Gypsum</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' nowrap>Thermal Barrier</td>
    <td style='border:1px solid black;' nowrap>Perlite </td>
    <td style='border:1px solid black;' rowspan="2">Perlite or gypsum board may be used to provide    stable underlayment for roofing systems or to comply with code requirements.</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' nowrap></td>
    <td style='border:1px solid black;' nowrap>Gypsum</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' nowrap>Vapour Retarder</td>
    <td style='border:1px solid black;' nowrap>Designer’s Option</td>
    <td style='border:1px solid black;'>May be required for the protection of the insulation.</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' nowrap>Insulation</td>
    <td style='border:1px solid black;' nowrap>ENRGY 3</td>
    <td style='border:1px solid black;' rowspan="2">Mechanically fasten to deck.  Membrane can only be fully bonded to    insulation overlayment listed below.</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' nowrap></td>
    <td style='border:1px solid black;' nowrap>ISO 3</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' nowrap>Insulation Overlay</td>
    <td style='border:1px solid black;' nowrap>Fesco Board</td>
    <td style='border:1px solid black;'>Mechanically fasten overlayment to deck, with minimum of one    fastener every 0.185 meters squared (2 sq ft).</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' nowrap>Adhesive</td>
    <td style='border:1px solid black;' nowrap>EPDM Bonding Cement</td>
    <td style='border:1px solid black;'>Fully bonds surface areas.</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' nowrap>Membrane</td>
    <td style='border:1px solid black;'>1.11 mm (0.045&quot;), 1.52 mm (0.060&quot;), and 2.28 mm    (0.090&quot;) Reinforced and non-reinforced EPDM</td>
    <td style='border:1px solid black;'>Maximum 12.19 m (40') wide, maximum 30.48 m (100')long.</td>
  </tr>
</table>


====JM Roofing System Ballasted EPDM Membrane Assembly====
Slope Limitation: Must not exceed 1:6 (2" in 12"). 

<table cellspacing="0" cellpadding="2">
  <tr>
    <td style='border:1px solid black;' colspan="3" align="left" valign="top"><u>ROOF ASSEMBLY</u><u></u></td>
  </tr>
  <tr>
    <td style='border:1px solid black;' align="left" valign="top" nowrap><u>Components</u></td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap><u>Options</u></td>
    <td style='border:1px solid black;' align="left" valign="top"><u>Comments or Cautions</u></td>
  </tr>
  <tr>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Roof Deck</td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Wood / Plywood</td>
    <td style='border:1px solid black;' rowspan="4" align="left" valign="top">Decks must withstand ballast loads of up to 90 kg /    m2 (18 lb / sq. ft) for FM wind design.     Standard loads are 50 kg / m&sup2; (10 lb / sq. ft)</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Concrete</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Steel</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Fibrous Cement / Gypsum</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Thermal Barrier</td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Perlite </td>
    <td style='border:1px solid black;' rowspan="2" align="left" valign="top">Perlite or gypsum board may be used to provide    stable underlayment for roofing systems or to comply with code requirements.</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Gypsum</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Vapour Retarder</td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Designer's Option</td>
    <td style='border:1px solid black;' align="left" valign="top">May be required for the protection of the insulation.</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Insulation</td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>ENRGY 3</td>
    <td style='border:1px solid black;' rowspan="2" align="left" valign="top">May be loose laid.</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>ISO 3</td>
  </tr>
  <tr>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Membrane</td>
    <td style='border:1px solid black;' align="left" valign="top">1.11 mm (0.045&quot;) JM EPDM</td>
    <td style='border:1px solid black;' align="left" valign="top">Loose-laid.</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td style='border:1px solid black;' align="left" valign="top">1.52 mm (0.060&quot;) JM EPDM</td>
    <td style='border:1px solid black;' align="left" valign="top">Loose-laid.</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td style='border:1px solid black;' align="left" valign="top">2.28 mm (0.090&quot;) JM EPDM</td>
    <td style='border:1px solid black;' align="left" valign="top">Loose-laid.</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td style='border:1px solid black;' align="left" valign="top">Non-reinforced and Reinforced JM EPDM</td>
    <td style='border:1px solid black;' align="left" valign="top"></td>
  </tr>
  <tr>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Ballast</td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Gravel</td>
    <td style='border:1px solid black;' rowspan="3" align="left" valign="top">38 mm (1-1/2&quot;) nominal diameter applied at 50 kg / m&sup2; (10 lb / sq.ft).  Crushed stone requires protective mat underlayment.</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Crushed Stone </td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td style='border:1px solid black;' align="left" valign="top" nowrap>Concrete Pavers </td>
  </tr>
</table>


====JM Roofing System Mechanically Fastened Membrane Assembly====
Slope Limitation: No slope restrictions. 

<table cellspacing="0" cellpadding="2">
  <tr>
    <td colspan="3" align="left" valign="top" style='border:1px solid black;'><u>ROOF ASSEMBLY</u></td>
  </tr>
  <tr>
    <td align="left" valign="top" style='border:1px solid black;'><u>Components</u></td>
    <td align="left" valign="top" style='border:1px solid black;'><u>Options</u></td>
    <td align="left" valign="top" style='border:1px solid black;'><u>Comments or Cautions</u></td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>Roof Deck</td>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>Wood / Plywood</td>
    <td rowspan="4" align="left" valign="top" style='border:1px solid black;'>Decks must provide    required withdrawl resistance; minimum published fastener pull out    requirements; and FM wind uplift zone minimums all to be specified by the    design authority.</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>Concrete</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>Steel</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>Fibrous Cement / Gypsum</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>Thermal Barrier</td>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>Perlite</td>
    <td rowspan="2" align="left" valign="top" style='border:1px solid black;'>Perlite or gypsum board may be used to provide    stable underlayment for roofing systems or to comply with code requirements.</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>Gypsum</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>Vapour Retarder</td>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>Designer's Option</td>
    <td align="left" valign="top" style='border:1px solid black;'>May be required for the protection of the insulation.</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>Insulation</td>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>ENRGY 3</td>
    <td rowspan="2" align="left" valign="top" style='border:1px solid black;'>Mechanically fasten insulation with minimum of one    fastener and plate every 0.74 m&sup2; (8 sq. ft.).</td>
  </tr>
  <tr>
    <td align="left" valign="top" nowrap></td>
    <td align="left" valign="top" nowrap style='border:1px solid black;'>ISO 3</td>
  </tr>
  <tr>
    <td align="left" valign="top" style='border:1px solid black;'>Membrane</td>
    <td align="left" valign="top" style='border:1px solid black;'>1.11 mm (0.045&quot;) and 1.52 mm (0.060&quot;) Reinforced JM    EPDM</td>
    <td align="left" valign="top" style='border:1px solid black;'>Mechanically fastened.</td>
  </tr>
  <tr>
    <td align="left" valign="top" style='border:1px solid black;'>Wind Design</td>
    <td colspan="2" align="left" valign="top" style='border:1px solid black;'>Must be completed by the roofing consultant and meet    FM requirements</td>
  </tr>
</table>


<hr>

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