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MB Section 6: Primary Membrane

MB-6.1 General

.1

Unless otherwise approved, SBS modified bituminous primary membrane shall be comprised of a two ply primary membrane consisting of a base sheet and a cap sheet. All SBS modified bituminous membrane components must be from the same manufacturer.

.2

Modified bituminous membrane systems can be categorized as a conventional design (membrane applied above insulation), a protected membrane design (membrane applied below insulation) or a combination design (membrane applied between two insulation layers).

.3

For all designs the modified bituminous membrane shall be uniformly adhered to and supported by an accepted substrate. The primary membrane shall be joined and sealed to the vapour retarder membrane extension at perimeters and penetrations.

.4

Application of a modified bituminous roofing systems must not be undertaken when the air temperature at roof level is colder than -18°C and a wind velocity of more than 14.5 km/h, or an equivalent wind chill factor of 1300. Roofing systems components shall not be applied during periods of rain, snow or similar moisture conditions.

MB-6.2 Design Considerations

.1

Roof assemblies must meet the standards as set up by the authority having jurisdiction.
Revised

2016-01

.2

When developing a modified bituminous membrane system design, the design authority shall take the following items into consideration:

MB-6.2.1 Drainage Provision

.1

The Warranty Certificate does not warrant the roof drainage system.

.2

The Warranty Certificate covers the watertight integrity of the primary membrane and the seal of the roof flashing component, e.g. lead flashing, drain or scupper flange. The design authority shall ensure that the drainage system is designed in accordance with the governing Plumbing and Building Code to provide positive drainage and accommodate minimum roof drainage slopes as follows:
  1. Minimum 1:100 (1/8”/ft.) for Conventional Membrane Designs.
  2. Minimum 1:50 (1/4”/ft.) for Protected Membrane and Combination Designs.

.3

Some isolated ponding water can be anticipated when drainage slope is provided.

.4

ARCA Warranty Ltd. recommends that emergency or overflow drainage be incorporated into the roof drainage systems. The Warranty Certificate requires that emergency drainage be provided in designs using “flow control” type roof drains.

.5

Splash pads shall be installed beneath drain outlets discharging water onto lower roofs to prevent the erosion of the membrane protection and damage to the primary membrane.

MB-6.2.2 Roof Slope

.1

Modified bituminous membrane base sheets may be adhered with hot bitumen when the roof slope is 1:6 (2"/ft.) or less. When the roof slope is 1:8 (1.5”/ ft.) or less the primary membranes may run parallel or perpendicular to the roof slope.

.2

Bitumen adhered modified bituminous membrane base sheets shall be mechanically fastened to nailers when roof slope is greater than 1:8 (1.5"/ft.). The primary membranes shall run parallel to the roof slope.

.3

A single ply of modified bituminous membrane cap sheet may be used when roof slope exceeds 1:16 (3/4"/ft.).

.4

For insulated conventional roof designs, mechanically fastening of the membrane plies requires the installation of nailers. Please refer to Section 5, Insulation, Subsection 5.4, for the application standards for the spacing and installation of nailers.

.5

Protected membrane and combination designs do not require mechanical fastening of the primary membrane.

.6

To qualify for an ARCA 15 Year Warranty Certificate, each self-contained roof area shall have positive drainage with a minimum slope of 1:50 (2%).
Added

2016-08

.7

Enclosed roof sections that include photovoltaic equipment shall be independently drained and shall have positive drainage with a minimum slope of 1:50 (2%).
Added

2017-08

MB-6.2.3 Temporary Membrane

.1

A minimum two (2) ply vapour retarder comprised of roofing felt adhered with hot bitumen may be used as a temporary membrane. A separator is required over wood decks and an auxiliary leveling surface is required over steel decks prior to application of the vapour retarder as a temporary membrane.

.2

For two-stage construction, the installation of the vapour retarder membrane is the first stage. The vapour retarder membrane shall be inspected and repaired prior to the remaining roofing components being installed.

.3

Un-insulated conventional and protected membrane designs do not qualify for two-stage construction.

MB-6.3 Modified Bituminous Roofing Systems Components

MB-6.3.1 Asphalt

.1

When asphalt is the bitumen used to adhere modified bituminous base sheets, the asphalt shall be manufactured in compliance with CSA A123.4-04.

The asphalt type is based on the roof slope as follows:

Revised

2016-04

  1. For slopes 1:12 (1”/ft.) and less: Type 2 Asphalt
  2. For slopes 1:6 (2”/ft.) and less: Type 3 Asphalt (*See Note)

    *Note: Additional membrane fastening required when roof slope exceeds 1:8 (1.5”/ft.).

.2

Bitumens must not be heated in excess of their Final Blowing Temperature, i.e. the temperature at which the bitumen was oxidized.

.3

Equiviscous Temperature (EVT) is the recommended application temperature range for bitumen and shall be measured at the point of application. EVT is provided by the bitumen manufacturer and may differ with the bitumen type.

.4

Asphalt shall be applied over the substrate at its Equiviscous Temperature (EVT) application range using an approximate application rate of 1.2 kg/m² (25 lbs/100 ft².). The asphalt may be applied by hand with a roofer’s mop or mechanically applied with an asphalt applicator. The asphalt shall be applied with sufficient coverage to ensure full adhesion of the base sheet. For cold weather applications, the mopping distance between the hot asphalt and the base sheet roll shall not exceed 1000mm (1 meter) at the point of application.

MB-6.3.2 SBS Modified Bitumious Membranes

.1

Modified bituminous membranes shall comply with the requirements of CGSB 37-GP-56M / CSA A123.23-15. All modified bituminous membrane components shall be from the same manufacturer. When a Warranty Certificate is required, select the appropriate primary membrane system from the list of ARCA Warranty Ltd. accepted SBS modified bituminous systems.
Revised

2016-04

.2

To prevent moisture infiltration membrane rolls shall be covered during shipment and storage out of doors. Store rolls on end and on pallets above the roof/ground surface. Do not stack pallets to prevent damaging roll ends.

MB-6.3.2.1 Primary Membrane Base Sheets

.1

Base sheet membranes may be polyester, fiberglass or composite reinforced with the top surface covered with plastic film or sanded.

.2

Self-adhesive base sheet membranes shall be fabricated with intermittent adhesive strips on the underside. Full adhesive surface is not accepted for primary membrane application.

MB-6.3.2.2 Laminated Primary Membrane Base Sheets

.1

Laminated primary membrane base sheets are roofing panels comprised of supporting accepted mineral wool insulation, fire resistance fiberboard or asphalt core board substrate with an attached factory laminated modified bitumen base sheet. Composite modified bitumen membrane panels may be accepted as an alternate to the secondary insulation layer required over primary insulation.

MB-6.3.2.3 Primary Membrane Cap Sheets

.1

Cap sheets shall be polyester reinforced or shall contain polyester reinforcement. Cap sheets may be smooth surfaced for use in protected membrane and combination designs or granular surface coated for use in conventional designs.

.2

Primary membrane cap sheets shall be thermally fused, torched, to the base sheet membrane.

.3

Asphalt is not accepted for adhering primary membrane cap sheets.

MB-6.4 Installation

MB-6.4.1 Primary Membrane Base Sheets

.1

For modified bitumen membrane systems, the use of cant strips at roof junctions is optional.

.2

Primary membrane base sheets may be applied in an application of hot bitumen, mechanically fastened, torch adhered, or self-adhesive a.k.a. peel & stick (see 6.3.2.1.2).

.3

Primary membrane base sheets may be adhered with hot bitumen to wood fiberboard, fesco/perlite fiberboards, asphalt core board, gypsum board, and concrete substrates.
Revised

2015-04

.4

Primary membrane base sheets may be adhered to minimum 3 mm (3/16”) thick asphalt core board with hot bitumen when polyisocyanurate insulation forms the primary insulation layer.

.5

Primary membrane base sheets may be torch adhered to concrete, gypsum board and asphalt core board substrates, where approved by ARCA Warranty Ltd. and the membrane manufacturer.

.6

For protected membrane designs, the base sheet maybe torch adhered or mopped in hot bitumen to a gypsum board auxiliary leveling surface attached to the structural deck.

.7

Base sheet side and end laps may be sealed with hot bitumen or thermally fused with a torch. Base sheet side laps shall be a minimum 64mm (2.5”) wide, end laps a minimum of 150mm (6”) wide. Stagger base sheet side and end laps a minimum distance of 300mm (12”) from adjacent laps.

.8

When the application of the cap sheet does not follow base sheet application within the same day, base sheet side and end laps shall be checked for proper adhesion and seal.

.9

The primary membrane base sheet shall not be left exposed to the weather for more than ninety (90) days prior to the application of the cap sheet membrane.

.10

Base sheet membranes shall be unrolled, permitted to relax and re-rolled prior to their application. Commence base sheet application at roof drains or at slope bottoms and install membrane rolls to shed water away from the side laps. When using hot asphalt, restrict bitumen bleed out at lap edges. During cold applications, base sheet membrane may be heated using a propane torch to soften the bitumen and aid adhesion.

.11

When not bitumen adhered, base sheets shall terminate at the base of vertical projections or at the toe of the cant strip.

.12

Bitumen adhered base sheets shall be turned up the vertical substrate and adhered with a mopping of hot bitumen at the perimeter of each self-contained roof section.

.13

The bitumen adhered base sheet extension shall be anchored to the vertical substrate, except at the curbed roof penetrations, employing one of the following methods:
  1. A continuous flat steel bar, 25mm x 1.1mmx3048 mm long, minimum AZ 55 galvalume coated, pre-punched with 7.0mm diameter holes located 12.7mm (1/2") from each end and at 150mm (6") centres for the remainder of its length. Minimum #14 corrosion resistant fasteners, appropriate for the vertical substrate, shall attach the bar. The bottom of each bar shall be located no higher than 25mm (1") above the surface of the primary membrane base sheet.
  2. When there is a reduced perimeter height, minimum 12.7mm (1/2") primed plywood or 11.1mm(7/16") thick oriented strand board, extending above the surface of the primary membrane base sheet, shall completely cover the 75mm (3") high base sheet extension and the vertical substrate. Minimum #14 corrosion resistant screws, spaced at maximum 300mm (12”) centres, shall uniformly attach both the sheathing and base sheet extension to the vertical substrate.
  3. Corrosion resistant 50mm (2") diameter circular metal fastening plates and minimum #14 screws, approved by the membrane manufacturer, spaced at maximum 300mm (12") centres are accepted substitutes. The bottom of the fastening plate shall be placed no lower than 25mm (1") above the base sheet surface.

.14

Nailing of base sheet extensions in any form is not permitted.

.15

The completed base sheet shall be inspected for defects and repaired prior to cap sheet application.

.16

Self-adhesive primary base sheets shall be applied to an acceptable substrate as per membrane manufacturer recommendations and instructions. Self-adhesive membranes are not to be applied to fiberboard substrates.
Revised

2018-02

MB-6.4.2 Laminated Primary Membrane Base Sheets

.1

The primary membrane base sheet and secondary insulation layer may be substituted with an accepted composite panel consisting of fire resistant (FR) fiberboard, asphalt core board or mineral wool insulation panel factory laminated to an accepted SBS modified bitumen base sheet membrane. Laminated modified bitumen base sheets comprise both the primary membrane base sheet and the secondary insulation for a two-ply SBS membrane system.

.2

When the primary membrane base sheet is laminated to either fire resistant fiberboard (FR) or asphalt core board, the composite panels may be adhered with hot bitumen, an approved adhesive or mechanically fastened to the structural decking when applied in accordance with the membrane manufacturer’s application requirements.

.3

Laminated mineral wool insulation composite panels may only be mechanically fastened to the roof decking with fasteners and plates approved by the membrane manufacturer.

.4

Laminated primary membrane base sheet panels shall have their end lap joints aligned over all substrates.

.5

When the end lap is to be torch sealed, a minimum 150mm (6”) wide continuous fire prevent tape backing strip, centered and placed under the end lap joint is required to protect the primary insulation from the torch flame.

.6

When the laminated primary membrane base sheet panel incorporate a 25mm to 50mm (1" to 2") factory installed end lap, the end laps shall be covered with a minimum 300mm (12”) wide continuous strip of a compatible modified bitumen base sheet centered over the joint and thermally fused to completely cover and waterproof the panel membrane end lap junction.

.7

Laminated primary membrane base sheet panels shall have their side and end laps offset a minimum distance of 150mm (6”) from the underlying joints of the primary insulation.

.8

When adhering laminated primary membrane base sheet panels with hot bitumen, polystyrene insulation shall be first covered with minimum layer of 12.7mm (1/2”) thick wood fiber board. Wood fiber board and the laminated primary membrane base sheet shall be adhered using the "MOP AND FLOP" back coating application method with board joints offset a minimum distance of 150mm (6”) from the layer preceding.
Revised

2015-01

.9

When mechanically fastening laminated base sheet panels, each fastener/plate location shall be waterproofed with a compatible SBS base sheet patch sized to adequately cover the plate, sealed to the surface of the exposed base sheet membrane.
Revised

2015-02

.10

Laminated primary base sheet panels shall have their side laps heat sealed with either a torch using a round nosed trowel to butter the edges or hot air welder.
Added

2016-12

MB-6.4.3 Primary Membrane Cap Sheets

.1

Primary membrane cap sheets shall be thermally fused to the base sheet membrane with propane torches recommened by the membrane manufacturer. Begin cap sheet installation by centering a double-selvage edge starter roll centered over the roof drain centerline or at the bottom of the slope. When a starter roll is not available, de-granule side laps by embedding granules by heating and troweling in granules from a 75mm (3") width along the non-selvage edge. Allow rolls to relax and re-roll granule side in, starting at the roll ends. Align prepared rolls and heat weld to the base sheet so a bead of bitumen is visible along the selvage edge as the cap sheet is torch applied.

.2

At end laps cut underlying cap sheet selvage edge corners at 45° angle and trowel in granules for a minium width of 150mm (6") to form the end lap. All overlapping surfaces shall be de-granulated or granule free prior to torch adhering. Stagger cap sheet end and side laps a minimum distance of 300mm (12") from the base sheet membrane laps. Check all lap edges for proper adhesion and seal. Terminate cap sheets at the base of vertical projections or at the toe of the cant when cant strips are used.
Revised

2017-07-24

MB-6.5 Membrane Load Protection

.1

Under no circumstances shall any equipment load be supported directly on the surface of an unprotected primary membrane.

.2

For roof mounted equipment exceeding 91kg (200 lbs.) in mass or when roof point loads exceed 5 kPa (105 PSF), they shall be supported on structural curbs, structural sleepers or structural pedestals attached to the structure or decking that extend a minimum distance of 200mm (8”) above the finished roof surface. Roof mounted equipment includes antennae, signs, service lines, skylights, hatches and walkways. For new construction where H.V.A.C. equipment is elevated above the roof membrane, a minimum clearance of 300mm (12") shall be provided beneath the equipment to permit installation of the roofing system. Equipment supports shall be designed by a structural engineer and shall conform to the Alberta Building Code.
Revised

2018-10

.3

Equipment loads maximum 91kg (200 lbs.) in mass, may be supported by free floating sleepers or support pads loose laid over the roofing system. Free floating sleepers shall be pressure preservative treated wood, pre-cast concrete, metal or specialty product. Free floating sleepers and pads shall be placed on a minimum 25mm (1") thick layer of Type 4 extruded polystyrene insulation with a minimum compressive strength of 240kPa (35psi) attached to the base of the supports without the use of mechanical fasteners. A ply of mineral surfaced cap sheet applied to the primary membrane may be substituted for the Type 4 insulation protection layer.
Revised

2018-10

.4

When guy wires are used to anchor roof mounted equipment, their anchorage points shall be waterproofed with 200mm (8") high curbs or with gum boxes.

.5

H.V.A.C. units, skylights and hatches shall be supported by insulated metal or wooden curbs supported by and fastened to the structural deck to prevent displacement that extend a minimum distance of 200mm (8") above the surface of the roofing system.

.6

To protect the primary membrane from concrete paver and/or walkway damage, a minimum 25mm (1") thick layer of Type 4 insulation shall be placed between the walkway/pavers and the SBS cap sheet surface. Place the Type 4 insulation so that the roof drainage is free to flow under the pavers/walkway.

.7

Roof areas containing photovoltaic installations are not eligible for an ARCA 15 Year Warranty Certificate.
Added

2016-08

.8

To qualify for an ARCA 15 Year Warranty Certificate, membrane protection shall be installed around all roof mounted mechanical equipment and walkways.
Added

2016-08

MB-6.6 Accepted SBS Modified Bituminous Membrane Systems

 

Meeting CGSB-37.56-M / CSA A123.23-15

MB-6.6.1 IKO

5 and 10 Year ARCA Warranty: IKO BASE PLY CAP PLY
Uninsulated
  • Modiflex MF-95
  • Modiflex MP-180
  • Torchflex MF-95
  • Torchflex TP-180
  • Torchflex HD-FF
  • Roofcraft Base FR
  • Protectobase
  • Protectobase 180
  • Torchflex TP-180 Cap
  • Prevent TP-180 Cap
  • Prevent Premium TP-180 Cap
  • Torchflex TP-250 Cap
  • Prevent TP-250 Cap
  • Prevent Premium TP-250 Cap
  • Torchflex TP-250 Cap 5.0
  • Prevent TP-250 Cap 5.0
  • Prevent Premium TP-250 Cap 5.0
  • Premium TP
  • Torchflex TP-HD-Cap
Insulated
  • Modiflex MF-95
  • Modiflex MP-180
  • Torchflex MF-95
  • Torchflex TP-180
  • Torchflex HD-FF
  • Roofcraft Base FR
  • Protectobase
  • Protectobase 180
  • Torchflex TP-180 Cap
  • Prevent TP-180 Cap
  • Prevent Premium TP-180 Cap
  • Torchflex TP-250 Cap
  • Prevent TP-250 Cap
  • Prevent Premium TP-250 Cap
  • Torchflex TP-250 Cap 5.0
  • Prevent TP-250 Cap 5.0
  • Prevent Premium TP-250 Cap 5.0
  • Premium TP
  • Torchflex TP-HD-Cap
Protected Membrane
  • Modiflex MP 180
  • Torchflex TP-180
  • Torchflex HD-FF
  • Protectobase
  • Protectobase 180
  • Torchflex TP-180 Cap
  • Prevent TP-180 Cap
  • Prevent Premium TP-180 Cap
  • Torchflex TP-250 Cap
  • Prevent TP-250 Cap
  • Prevent Premium TP-250 Cap
  • Torchflex TP-250 Cap 5.0
  • Prevent TP-250 Cap 5.0
  • Prevent Premium TP-250 Cap 5.0
  • Torchflex TP-HD-Cap
Fast-N-Weld (mechanically fastened)
  • Fast-N-Stick 180 Base
  • Torchflex TP-180 Cap
  • Prevent TP-180 Cap
  • Prevent Premium TP-180 Cap
  • Torchflex TP-250 Cap
  • Prevent TP-250 Cap
  • Prevent Premium TP-250 Cap
  • Torchflex TP-250 Cap 5.0
  • Prevent TP-250 Cap 5.0
  • Prevent Premium TP-250 Cap 5.0
  • Premium TP
  • Torchflex TP-HD-Cap
Revised

2017-11

MB-6.6.2 IKO (Jobs bid between October 1, 2016 and January 23, 2017)

15 Year ARCA Warranty: IKO BASE PLY CAP PLY
Uninsulated
  • Torchflex TP-180
  • Fast-N-Stick 180 Base
  • Torchflex TP-250 Cap
  • Prevent TP-250 Cap
  • Prevent Premium TP 250 Cap
  • Torchflex TP-250 Cap 5.0
  • Prevent TP-250 Cap 5.0
  • Prevent Premium TP-250 Cap 5.0
  • Armourcool Granular
  • Armourcool Granular Prevent TP
  • Armourcool Granular Prevent Premium TP
  • Torchflex TP-HD-Cap
Insulated
  • Torchflex TP-180
  • Fast-N-Stick 180 Base
  • Torchflex TP-250 Cap
  • Prevent TP-250 Cap
  • Prevent Premium TP 250 Cap
  • Torchflex TP-250 Cap 5.0
  • Prevent TP-250 Cap 5.0
  • Prevent Premium TP-250 Cap 5.0
  • Armourcool Granular
  • Armourcool Granular Prevent TP
  • Armourcool Granular Prevent Premium TP
  • Torchflex TP-HD-Cap
Revised

2016-12

MB-6.6.3 IKO (Jobs bid after January 23, 2017)

15 Year ARCA Warranty: IKO BASE PLY CAP PLY
Uninsulated
  • Torchflex TP-180
  • Torchflex HD-FF
  • Fast-N-Stick 180 Base
  • Protectobase 180
  • Torchflex TP-250 Cap
  • Prevent TP-250 Cap
  • Prevent Premium TP 250 Cap
  • Torchflex TP-250 Cap 5.0
  • Prevent TP-250 Cap 5.0
  • Prevent Premium TP-250 Cap 5.0
  • Torchflex TP-HD-Cap
Insulated
  • Torchflex TP-180
  • Torchflex HD-FF
  • Fast-N-Stick 180 Base
  • Protectobase 180
  • Torchflex TP-250 Cap
  • Prevent TP-250 Cap
  • Prevent Premium TP 250 Cap
  • Torchflex TP-250 Cap 5.0
  • Prevent TP-250 Cap 5.0
  • Prevent Premium TP-250 Cap 5.0
  • Torchflex TP-HD-Cap
Added

2017-11

MB-6.6.4 SOPREMA

5 and 10 Year ARCA Warranty: SOPREMA Spec No. BASE PLY CAP PLY
Uninsulated 1
  • Soprabase FR
  • Soprabase HD
  • Soprasmart Board 180
  • Elastophene PS
  • Elastophene 180 PS
  • Colvent 830
  • Sopralene Flam 180
  • Sopralene Flam 250 Gr
  • Mammouth 250 GR 5mm
  • Colvent Traffic Cap 860
Insulated 2
  • Elastophene PS
  • Elastophene 180 PS
  • Soprabase FR
  • Soprabase HD
  • Soprasmart Board 180
  • Xpress Board
  • Sopralene Flam 180
  • Sopralene Flam 250 Gr
  • Mammouth 250 GR 5mm
Protected Membrane (mopped) 3
  • Elastophene PS
  • Elastophene 180 PS
  • Sopralene Flam 180
  • Sopralene Flam 180 Cap
  • Sopralene Flam 250
  • Sopralene Flam 250 Cap
  • Mammouth 250 GR 5mm
Protected Membrane (torched) 4
  • Sopralene Flam 180
  • Sopralene Flam 180
  • Sopralene Flam 180 Cap
  • Sopralene Flam 250
  • Sopralene Flam 250 Cap
  • Mammouth 250 GR 5mm
Single Ply 5 N/A
  • Unilay 750 (min. slope 3%) (Torch seam only)
Soprafix (mechanically fastened) 6
  • Soprafix 630 (610 deleted March 23, 2011)
  • Soprafix Traffic Cap 660
Colvent 7
  • Colvent 830
  • Colvent Traffic Cap 860
Sopraply 8
  • Sopraply 510
  • Sopraply 520
  • Xpress Board
  • Soprasmart Board 180
  • Sopraply Traffic Cap 560
Revised

2018-02

MB-6.6.5 SOPREMA (Jobs bid before October 1, 2016)

15 Year ARCA Warranty: Soprema **Important all ARCA 15 year Warranties must be full system as prescribed by Membrane Manufacturer**
BASE PLY CAP PLY
Sopralene/Elastophene
  • Elastophene 180 PS
  • Sopralene Flam 180
  • Soprasmart Board 180
  • Sopralene Flam 250 Gr
  • Soprastar Flam HD Gr
Soprafix (mechanically fastened)
  • Soprafix 630 (610 deleted March 23, 2011)
  • Soprafix Traffic Cap 660
  • Soprastar Flam HD Gr
Colvent (Self-adhesive over Colgrip A Insulation)
  • Colvent 830
  • Colvent traffic Cap 860
  • Soprastar Flam HD Gr
Sopraply
  • Sopraply 510
  • Sopraply 520
  • XpressBoard
  • Soprasmart Board 180
  • Sopraply Traffic Cap 560
  • Soprastar Flam HD Gr
Revised

2016-08

MB-6.6.6 SOPREMA (Jobs bid on or after October 1, 2016)

15 Year ARCA Warranty: SOPREMA BASE PLY CAP PLY
Uninsulated
  • Soprasmart Board 180
  • Sopralene Flam 180
  • Soprafix 630
  • Sopraply 520
  • Sopralene Flam 250 GR
  • Soprafix Traffic Cap 660
  • Sopraply Traffic Cap 560
Insulated
  • Soprasmart Board 180
  • Sopralene Flam 180
  • Soprafix 630
  • Sopraply 520
  • Sopralene Flam 250 GR
  • Soprafix Traffic Cap 660
  • Sopraply Traffic Cap 560
Revised

2016-08

MB-6.6.7 SIPLAST

5 and 10 Year ARCA Warranty: SIPLAST Spec No. BASE PLY CAP PLY
Uninsulated 1
  • Paradiene 20
  • Paradiene 20 TG
  • Paradiene 20 EG T
  • Paradiene 20 HT TG
  • Parafor 30 TG
  • Parafor 50 TG
Insulated 2
  • Paradiene 20
  • Paradiene 20 TG
  • Paradiene 20 EG T
  • Paradiene 20 HT TG
  • Parafor 30 TG
  • Parafor 50 TG
Protected Membrane (torched) 3
  • Paradiene 20 TG
  • Paradiene 20 EG TG
  • Paradiene 20 HT TG
  • Paradiene 20 TG
  • Paradiene 20 EG TG
  • Paradiene 20 HT TG
  • Parafor 30 TG
Combination (mopped) 4
  • Paradiene 20
  • Paradiene 20 TG
  • Paradiene 20 EG TG
  • Paradiene 20 HT TG
  • Parafor 30 TG
Revised

2016-08

MB-6.6.8 SIPLAST (Jobs bid before October 1, 2016)

15 Year ARCA Warranty: SIPLAST **Important all ARCA 15 year Warranties must be full system as prescribed by Membrane Manufacturer**
BASE PLY CAP PLY
Uninsulated
  • Paradiene 20
  • Paradiene 20 TG
  • Paradiene 20 EG T
  • Paradiene 20 HT TG
  • Parafor 30 TG
  • Parafor 50 TG
Insulated
  • Paradiene 20
  • Paradiene 20 TG
  • Paradiene 20 EG T
  • Paradiene 20 HT TG
  • Parafor 30 TG
  • Parafor 50 TG
Protected Membrane (torched)
  • Paradiene 20 TG
  • Paradiene 20 EG TG
  • Paradiene 20 HT TG
  • Paradiene 20 TG
  • Paradiene 20 EG TG
  • Paradiene 20 HT TG
  • Parafor 30 TG
Combination (mopped)
  • Paradiene 20
  • Paradiene 20 TG
  • Paradiene 20 EG TG
  • Paradiene 20 HT TG
  • Parafor 30 TG
Revised

2016-08

MB-6.6.9 SIPLAST (Jobs bid between October 1, 2016 and November 28, 2016)

15 Year ARCA Warranty: SIPLAST BASE PLY CAP PLY
Uninsulated
  • Paradiene 20
  • Paradiene 20 TG
  • Paradiene 20 EG T
  • Paradiene 20 HT TG
  • Parafor 30 TG
  • Parafor 50 TG
Insulated
  • Paradiene 20
  • Paradiene 20 TG
  • Paradiene 20 EG T
  • Paradiene 20 HT TG
  • Parafor 30 TG
  • Parafor 50 TG
Revised

2016-10

MB-6.7 Roof Terraces

.1

Roof Terraces are to be installed over a minimum 6.4mm (1/4") asphalt impregnated core board membrane protection layer.

.2

The designer must take into consideration the compressive strength of the underlying materials to prevent damage to the insulation and roofing membrane from point loads and concentrated loads in excess of 113kg. (250 lbs.) which may exceed design limits. It is recommended that an ARCA approved HD coverboard is installed under the membrane for additional protection.
Revised

2017-10

.3

Roof areas with roof terraces are eligible for five (5) or ten (10) year Warranty Certificates only.

.4

The cost to remove and replace the roof terrace material to facilitate access to the roof membrane for investigation and repair of workmanship related leaks is included however; it is the responsibility of the building owner to cover costs for removal and replacement of items that were not installed by the roofing contractor. It is recommended that the design of the roof terrace incorporate future service and maintenance requirements.
Revised

2017-10

.5

Roof leaks as the result of membrane damage due to the work and activities of others, maintenance or from contaminants are not covered under the Warranty Certificate.
Added

2017-04