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MB Section 7: Membrane Flashing

MB-7.1 General

.1

To ensure protection against water entry into a newly installed roofing system, membrane flashing shall be installed at all primary membrane terminations (i.e. roof drains, curbs, roof/wall junctions, parapets etc.) as the application of the primary membrane progresses.

.2

The use of cant strips at roof junctions is optional for modified bituminous membrane systems.

.3

The membrane flashing shall be uniformly supported by and secured to an acceptable, solid substrate. Acceptable substrates consist of minimum 12.7mm (1/2”) thick plywood, minimum 11.1mm (7/16”) oriented strand board, dimensional lumber, smooth concrete, smooth surfaced concrete block or masonry and minimum 22 gauge flat sheet metal.
Revised

2016-06

.4

Factory-coated glass faced gypsum roof board or cement board, both must be a minimum 6.4mm (1/4”), are acceptable substrates for the application of self-adhesive SBS modified bitumen membrane flashing when a minimum 12.7mm (1/2”) thick wood sheathing is provided as a nailable support. Glass faced gypsum board or cement board shall be suitably fastened into the wood sheathing and/or parapet wall studs. Thickness subject to approval from the authority having jurisdiction to meet non-combustible requirements of the Alberta Building Code. (See Figure 4c).
Revised

2016-06

.5

When a self-adhering SBS modified bitumen base sheet membrane is used; all substrates must be treated with the manufacturer’s required primer.

.6

The minimum height of the membrane flashing at a wall, roof penetration, or curb shall be 200mm (8”) above the primary membrane surface in a conventional design and 200mm (8”) above the insulation or concrete paver ballast material in a protected membrane or combination design. The minimum height of membrane flashing at door sills shall be 100mm (4”) above the primary membrane surface, or concrete paver surface measured at the door sill location.
Revised

2016-06

.7

The maximum membrane flashing height is 1067mm (42") above a surface of the primary membrane. A variance request must be submitted to the Technical Committee when membrane flashing height is to exceed 1067mm (42").

.8

Where the upper termination of the membrane flashing on a vertical surface is exposed to water entry, the edge shall be protected with a continuous sheet metal flashing or sealed with an accepted liquid applied membrane.

.9

The tops of parapet walls not covered by membrane flashing shall be covered with a water resistant sheet extending down from the top of the blocking a minimum distance of 50mm (2”) on each side.

.10

Sheet metal flashing shall be installed to cover and protect a non-granule surfaced modified bitumen flashing membranes from ultra violet light damage.

.11

SBS modified bituminous membrane flashings shall not be adhered with hot bitumen.

.12

When preserved treated wood components are incorporated into a roof assembly, the potential for corrosion of some metal fasteners, sheet steel and roof decking exists when in direct contact with non-C.C.A. (Chromate Copper Arsenate) preservatives.

.13

Exposed penetrations through the membrane flashing shall be placed a minimum of 200mm (8") above the finished roof surface.

.14

Accepted alternative two-ply self-adhesive or cold-applied membrane flashings, or combination thereof, may be used where torch applications are not practical such as near wall cavities, roof-top units, or near combustible surfaces (i.e. wall siding).

.15

Liquid-applied membranes are accepted for use with irregular, complex, or circular details where sheet membrane applications are not practical or where gum boxes are not desired. One component liquid-applied membranes may be used as a sealant at sheet membrane flashing or metal flashing terminations at walls, window and door sills, or curbs.

MB-7.2 Membrane Flashing Materials

.1

Membrane flashing materials, adhesives, and primers shall be from the same manufacturer as the primary membrane materials.

.2

Non-combustible composite boards with factory laminated, polyester reinforced SBS modified bitumen membrane are accepted as the first ply of a two-ply membrane flashing system when covering the vertical face of a parapet or curb (See 7.3.5.2).
Added

2013-02

.3

SBS membrane flashing materials shall comply with the requirements of CGSB 37-GP-56M.

.4

This Section includes three alternative non-torched applications or combinations thereof categorized as such:
  1. Liquid-applied

    • Polyurethane or Modified Silicone membranes (one component)
    • PMMA (Polymethyl Methacrylate) membrane (two component)
  2. Cold-applied sheet membranes adhered with trowel applied adhesives.
  3. Self-adhesive membranes adhered to primed surfaces.
Added

2012-02

.5

Torch-applied or cold-applied sheet membranes shall contain polyester or composite reinforcement. Self-adhesive base ply membranes may contain fiberglass reinforcement.

.6

Liquid-applied membranes shall be reinforced with a polyester fleece

.7

To qualify for an ARCA 15 Year Warranty Certificate, base ply membrane flashing materials shall be polyester or composite reinforced with a minimum thickness of 3.0mm (118 mils) conforming to ASTM D6162 or ASTM D6164.
Revised

2017-04

.8

To qualify for an ARCA 15 Year Warranty Certificate, cap ply membrane flashing materials shall be polyester or composite reinforced with a minimum thickness of 4.0mm (157 mils) conforming to ASTM D6162 or ASTM D6164.
Revised

2017-04

MB-7.3 Installation Procedures

MB-7.3.1 General

.1

Sheet membrane flashing shall be comprised of a minimum of two (2) plies of an ARCA Warranty Ltd. accepted modified bituminous membrane.
Revised

2012-02

.2

Modified bituminous membrane flashings shall be installed using the “fingering” application method. The base ply of membrane flashing shall be installed onto the horizontal surface of the base ply of primary membrane. The cap ply of membrane flashing shall be installed onto the properly prepared horizontal surface of the cap ply of primary membrane (de-granulized for torched applications).

.3

Both the base and cap plies of the membrane flashing shall be installed in roll width sections.

.4

The base ply flashing membrane intersecting at all inside and outside corners require a membrane gusset made from a thermal-fusible, polyester reinforced membrane to maintain reinforcement and waterproofing continuity at the base of vertical junctions and intersecting angles at the top of parapets. Non-torched sheet membrane base flashings require a minimum 40mil thick self-adhesive membrane gusset.

.5

All substrates shall be clean, dry, and free of loose or incompatible materials that may hinder adhesion of membrane. Refer to manufacturers’ written instructions for substrate preparation and priming requirements.

.6

Sheet membranes shall have no poly film on the surface (i.e. lightly sanded or granular) to accept primers, cold-applied adhesives or liquid-applied membranes. A cold-applied or self-adhesive field cap sheet, a minimum of 600mm (24") wide, may be applied over the base sheet surface prior to the application of cap ply flashing to avoid torch application near the roof junction. Cap sheet may be laid perpendicular to the direction of the base sheet for this purpose.

.7

Cold-applied membrane adhesives shall be applied with notched trowels in accordance with manufacturer’s written instructions. Avoid applying adhesive in excess of the specified notched thickness as this can affect the curing and performance of membranes.

.8

Self-adhesive and cold-applied membranes used in non-torched applications (base and cap) requires all overlapping seam edges sealed with a hot-air welding devise specifically designed for roofing membranes.

.9

Applications of cold-applied and self-adhesive membranes require pressure from a hard roller to achieve optimum adhesion and uniform contact to surfaces.

MB-7.3.2 Base Ply Membrane Flashing (see Figure 1)

.1

When the substrate is non-combustible, the base ply may be thermally fused to a properly prepared (primed if necessary) substrate. A fire prevention tape shall be installed at the transition of horizontal to vertical if there is a combustible material below the primary membrane base sheet and at any gaps or voids in the substrate where a flame could penetrate and reach a combustible material.

.2

When the substrate is a combustible material the base ply shall be a self-adhering base ply membrane flashing applied to the properly prepared (suitably primed) substrate and mechanically fastened. The alternative to a self-adhering base ply is the installation of a fire separation material over the combustible substrate prior to thermally fusing a base ply membrane flashing.

.3

The mechanical fastening of a self-adhering or cold-applied base ply membrane flashing shall be with 25mm (1”) diameter round top nails or better. The round top nails shall be placed through the side laps and at the mid-width of each roll width section. The fasteners shall be positioned no lower than 75mm (3”) above the primary membrane base sheet surface and shall be spaced at no greater than 200mm (8”) intervals up the vertical surface. Additional fasteners may be used to enhance the contact of the self-adhering membrane to the primed substrate surface.

.4

The base ply membrane flashing side laps shall overlap a minimum 75mm (3”), and be staggered and offset approximately 225mm (9”) from adjacent primary base membrane laps. The base ply membrane flashing shall be installed a minimum of 100mm (4”) onto the horizontal surface of the primary base membrane. When the base ply membrane flashing is a self-adhering membrane the poly film on the surface of the primary base membrane must be melted off for the extent of the horizontal overlap. All seams shall be heated and buttered prior to installing any cap membranes.
  1. Cold-applied base ply membrane flashing applications shall be installed a minimum of 200mm (8”) onto the horizontal surface of the primary base membrane.

.5

The base ply membrane flashing shall be carried across the top (horizontal) surface of the parapet, down the outside face a minimum of 50mm (2”) and be mechanically fastened to the exterior face of the parapet wood blocking (see Figure 1).

.6

An approved self-adhering base ply membrane shall cover the perimeter anchorage system attached over the vertical termination of bitumen adhered primary membrane base sheets.

.7

Following the installation of fire prevention tape and the base ply flashing membrane, a gusset is back torched and pressed over the membrane flashing into the intersecting corner. The edges of the gusset are torched and trowel sealed (see Figure 2).

.8

The edge of self-adhesive membrane gussets in non-torched applications shall be sealed with a bead of compatible mastic. Fire prevention tape is not required in non-torched applications.
Revised

2009-08-18

Added

2011-03

MB-7.3.3 Cap Ply Membrane Flashing

.1

Cap ply membrane flashing shall be thermally fused, self-adhered, or adhered with adhesive to the properly applied base ply membrane flashing. Non-granular surfaces require a primer application for self-adhesive cap ply membranes.

.2

Cap ply membrane flashing side laps shall overlap a minimum 75mm (3”), and shall be staggered and offset approximately 457mm (18”) from the side laps of the underlying base ply membrane flashing. The cap ply membrane flashing shall extend 150mm (6”) onto the properly prepared (de-granuled) horizontal surface of the primary cap membrane.
  1. Cold-applied and self-adhesive cap ply membrane flashing overlapping onto granular surfaces shall be adhered with a full bed of adhesive trowelled over the granule surface. Keep adhesive back from membrane edge approximately 25mm (1”) to accommodate a hot-air welded lap seal.

.3

Seal all membrane overlaps by achieving a small bleed-out of melted bitumen, approximately 3.2mm (1/8”), from under the cap ply membrane.

.4

Where a sheet metal cap flashing is to be installed on a parapet wall the cap ply membrane flashing need not be carried over the top (horizontal) surface of the parapet and may be terminated at the upper inside face of the parapet detail. The membrane termination shall be sealed to the base ply by heating and trowelling the edge.
  1. Cold-applied and self-adhesive cap ply membrane flashing shall be carried across the top (horizontal) surface of the parapet wall and terminated along the outside edge of parapet. If the membrane “bulges” at the angle change, install round-top nails or a continuous fastening bar to prevent a void between membrane plies.

.5

Where a sheet metal cap flashing is not required, a granular surfaced cap ply membrane flashing may be carried across the top of the parapet and be thermally fused to the base ply. The cap ply membrane shall be terminated at a continuous sheet metal drip edge flashing attached over the base ply stripping at the exterior edge of the parapet's wood blocking. The horizontal flange of the metal drip flashing shall be sealed to the base ply with a continuous membrane reinforcement strip prior to the application of the cap ply membrane.

.6

Cap ply membrane flashing terminations at top of curbs or walls shall be mechanically fastened with a continuous metal term bar (min. 24 gauge) with screw fasteners spaced a maximum of 200mm (8”) on center. Alternatively, a metal counter flashing may be used with same required fastener spacing penetrating through the membrane flashing approximately 25mm below the membrane edge termination.

MB-7.3.4 Liquid-Applied Membrane Flashing Application

.1

Roof penetrations shall be supported to the roof deck and not move independently of the roof deck. Seal off air-intakes as well as openings where negative air leakage may draw odors into the interior of the building.

.2

Surfaces to be coated shall be prepared in accordance with manufacturers written instructions which may include the use of a primer and/or cleaner, and patching of joints, cracks or gaps. Wipe surface of cured membrane with a manufacturer recommended cleaner prior to applying a liquid membrane tie-in or splice.

.3

Liquid-applied membrane flashings are composed of one or two component polymer modified resin applied as a base coat and top (or finish) coat by brush or medium nap roller. Specific grades are available for winter or summer application temperatures. Consult the manufacturer for limitations as well as storage requirements.

.4

Two-component PMMA liquid-applied membranes require a catalyst mixed in specific ratios as per manufacturers written instructions. Catalyze only the amount of material that can be used within the resins specified pot-life (ranges between 10 to 20 minutes).

.5

Liquid-applied membranes shall be installed no less than 100mm (4”) onto the horizontal surface of the primary membrane or in accordance with the membrane manufacturers written instructions, whichever is greater.

.6

At membrane terminations, use masking tape to ensure liquid membrane edges do not taper off and to achieve clean straight edges. Apply resin coat a minimum of 5mm beyond edge of fabric. Remove tape while resin finish coat is sill wet. Broadcasting granules into the wet finish coat is not permitted prior to a final inspection by an ARCA accepted roofing inspector.

.7

Refer to the manufacturers’ written instructions regarding proper cutting and fitting of the reinforcement fabric for particular details. Reinforcement fabric shall be embedded into a liberally applied, thick resin base coat (approximately 3mm) with no wrinkles, buckles, or ridges. Apply top/finish coat of resin to uniformly coat the reinforcement fabric. No fabric shall be left exposed.

.8

Two component PMMA membrane applications require full coverage of the reinforcement fabric over the substrate. One component membrane applications require a minimum 150mm (6") wide continuous reinforcement fabric centered over all substrate junctions including joints/gaps greater than 3.2mm (1/8") wide. Lap fabric pieces a minimum of 50mm (2”) and ensure resin is applied between the fabric overlap.

.9

To qualify for an ARCA 15 Year Warranty Certificate, liquid-applied membrane flashing shall consist of a two-component PMMA liquid-applied membrane.
Revised

2017-04

MB-7.3.5 Alternate Installation Procedures for Fire Separation Materials

MB-7.3.5.1 Asphalt Core Board Procedure (See Figure 3)

.1

The SBS membrane flashing may be comprised of two (2) plies of thermally fused, torched, modified bituminous flashing membranes when adhered to minimum 3.2mm (1/8") thick asphalt core board panels heat formed and mechanically fastened to cover the combustible substrate.

.2

The asphalt core board panels shall be applied in maximum 1200mm (4 ft.) widths, incorporating a minimum 75mm (3") wide overlap with the adjacent panel section.

.3

Prior to installing the core board, fire prevention tape shall be applied at bottom junction of the parapet or curb, the vertical spine at corners, and any abutted board joint locations.

.4

Heat formed panels shall be fastened with minimum 25mm (1") diameter round top roofing nails placed at maximum 150mm (6") centers in the side laps and along the bottom of each panel.

.5

The bottom row of round top nails shall be placed no lower than 50mm (2") above the primary membrane surface.

.6

For the field of each panel, the fastener density shall be a minimum of one (1) round top nail per square foot of core board area.

MB-7.3.5.2 Laminated Base Sheet Membrane Flashing (see Figure 4a)

.1

The SBS membrane flashing may be comprised of a Laminated Primary Membrane Base Sheet with 12.7mm (1/2") thick stone-wool insulation, fire resistant (FR) fibreboard or 3.2mm or 4.8mm (1/8" or 3/16") asphaltic core board, polyester reinforced SBS modified bitumen membrane and a field applied, thermally-fused accepted membrane cap sheet flashing.
Revised

2014-10

.2

Accepted cover boards shall be applied in maximum 900mm (3 ft.) panel width sections incorporating self-sealing side laps, when formed and mechanically fastening to cover combustible substrates.

.3

Prior to installing the cover board, fire prevention tape shall be applied at bottom junction of the parapet or curb, the vertical spine at corners, and where abutted board joints require a torched membrane cover strip.

.4

To prepare panel board sections for application of a stone-wool cover board, trim grooves using the cutting tool provided by the manufacturer and remove the insulation backing to coincide with top transition of the parapet. Fold the prepared cover board panel sections to completely cover the combustible substrate.

.5

Terminate the Laminated Primary Membrane Base Sheet at the top of the vertical face of the parapet or curb. Apply a minimum 2.5mm thick self-adhesive SBS modified bitumen membrane over the primed wood blocking at the top of the parapet or curb; overlap onto the Laminated Primary Membrane Base Sheet face a minimum of 75mm (3") and minimum 50mm (2") down the exterior vertical face or to completely cover parapet wood blocking.
Revised

2014-10

.6

The prepared Laminated Primary Membrane Base Sheet shall be fastened to the nailable substrate with minimum 25mm (1") diameter round top roofing nails placed at a maximum 150mm (6") centres in the side laps and along the top and bottom of each panel or 200mm (8") spacing with screws and plates. The bottom row of fasteners shall be placed no lower than 50mm (2") above the primary membrane surface. To secure the balance of the cover board panel, additional fasteners shall be spaced vertically at maximum 200mm (8") centres at mid-span of the cover board panel.
Revised

2014-10

.7

Complete the membrane flashing base sheet application by cutting minimum 200mm (8") wide strips of the polyester reinforced SBS modified bitumen membrane to act as the membrane flashing tie-in between the cover board membrane and primary membrane base sheet. Thermally fuse (torch) the membrane flashing tie-in strip so it extends a minimum distance of 100mm (4") onto the surface of both the cover board and primary membrane base sheet membranes.

.8

An accepted thermally fused polyester reinforced SBS modified bitumen membrane cap sheet flashing shall be uniformly torch-applied to the cover board membrane, and lap onto the primary membrane cap sheet in accordance with ARCA Warranty Ltd. application standards.

MB-7.3.5.3 Alternate Laminated Primary Membrane Base Sheet Membrane Flashing (see Figure 4b)

.1

The SBS membrane flashing may be comprised of asphalt core board 3.2mm or 4.8mm (1/8" or 3/16") with a factory laminated, polyester reinforced SBS modified bitumen membrane and a field applied, thermally-fused accepted membrane cap sheet flashing.

.2

Accepted laminated base sheets shall be applied in maximum 900mm (3 ft.) panel width sections with self-sealing side laps when formed and mechanically fastening to cover combustible substrates.

.3

Prior to installing the cover board, fire prevention tape shall be applied at bottom junction of the parapet or curb, the vertical spine at corners, and where abutted board joins require it a torched membrane cover strip.

.4

To prepare panel board sections for application of a laminated base sheet, score the board to coincide with top transition of the parapet. Heat and fold the prepared cover board panel sections to completely cover the combustible substrate.

.5

Extend laminated base sheet to exterior edge of parapet and down minimum 50mm (2") or install flush to exterior edge of parapet and install self-adhering membrane overlapped onto the cover board membrane face a minimum of 75mm (3") and a minimum 50mm (2") down the exterior vertical face or to completely cover parapet wood blocking.

.6

The prepared laminated base sheets shall be fastened to the nailable substrate with minimum 25mm (1") diameter round top roofing nails placed at a maximum 150mm (6") centres in the side laps and along the top and bottom of each panel or 200mm (8") spacing with screws and plates. The bottom row of fasteners shall be placed no lower than 50mm (2") above the primary membrane surface. To secure the balance of the laminated base sheet, additional fasteners shall be spaced vertically at maximum 200mm (8") centres at mid-span of the cover board panel.

.7

Complete the membrane flashing base sheet application by torch adhering a maximum 990mm (39") wide strips of the polyester reinforced SBS modified bitumen membrane to act as the membrane flashing tie-in between the laminated base sheet and primary membrane base sheet. Thermally fuse (torch) the membrane flashing tie-in strip so it extends s minimum distance of 100mm (4") onto the surface of both the laminated base sheet and primary membrane base sheet membranes.

.8

An accepted thermally fused polyester reinforced SBS modified bitumen membrane cap sheet flashing shall be uniformly torch-applied to the cover board membrane, and lap onto the primary membrane cap sheet in accordance with ARCA Warranty Ltd. application standards.
Added

2014-10

MB-7.3.6 Membrane Flashing at Horizontal Metal Flanges (see Figure 5)

.1

The base ply membrane flashing shall be thermally fused to the properly prepared, primed as necessary, surface of the horizontal flange of the roof penetration flashing and a minimum distance of 150mm (6”) onto the surface of the primary base membrane.

.2

The primary membrane cap sheet shall be thermally fused to cover the installed base ply membrane flashing.

.3

The membrane termination at the vertical junction of gum boxes and similar metal flashings for roof penetrations not curbed shall be sealed with a compatible sealant approved by the membrane manufacturer.
Added

2014-02

MB-7.3.7 Internal Roof Drains (see Figure 6)

.1

The membrane flashing for internal roof drains shall be comprised of a one ply base membrane flashing thermally fused to a properly prepared (primed if necessary) surface of the horizontal drain flange or lead drain flashing and a minimum distance of 150mm (6") onto the surface of the primary membrane base sheet.

.2

For cast roof drains, a minimum 25 kg/m² (5 lb/ft²) lead drain flashing shall be sized to extend a minimum distance of 150mm (6") beyond the hopper flange. The lead shall be set in a compatible sealant over the primary membrane base sheet. (See Figure 6).
Revised

2016-04

.3

A lead flashing is not required with retrofit metal drains incorporating an integral metal flashing flange.

.4

The primary membrane cap sheet shall be thermally fused to cover the base ply membrane flashing and the primary membrane base sheet.

MB-7.3.8 Scupper Drains

.1

At scupper drains, the membrane flashing shall cover the prepared sheet metal scupper flanges and shall extend past the scupper drain opening to terminate inside a minimum distance of 75mm (3") measured from the interior face of the parapet or wall.

MB-7.4 Accepted Sheet Membrane Flashing Materials

Five (5) and Ten (10) Year ARCA Warranty Certificate
Manufacturer Primer/Adhesive Base Ply Cap Ply
Siplast Non-Torched Substrate PA-828 adhesive or TA-119 primer Paradiene 20 EGSA or SA
  • Parafor 30 or 40 FR (cold)
  • Parafor 30 TG, 30 TG BW
  • Parafor 50 LT
  • Veral
Siplast Torched Substrate PA-1125 Pardiene 20, 20 TG, 20 EG TG, 20 HT TG
IKO Non-Torched Substrate
  • Cold Gold Flashing Cement (2-part adhesive)
  • Aquabarrier
  • Aquabarrier WB
  • Modiflex ColdGold Base (cold)
  • Armourbond Flash Sand
  • Amourbond Flash
  • Amourbond Flash HD
  • MP-180-CAP (cold)
  • TP-180-CAP
  • TP-250-CAP
IKO Torched Substrate Meeting CGSB 37-GP-9 TP-180 FF
Soprema Non-Torched Substrate
  • Colply Adhesive
  • Elastocol Stick primer
  • Colply 410 (cold)
  • Colphene 1500 (SA)
  • Sopraflash Stick
  • Sopraflash Flam Stick
  • Sopralene Flam Stick
  • Sopraflash Stick 20
  • Sopraflash Stick 40
  • Sopralene Stick HR 20
  • Sopralene Stick HR 40
  • Sopraply 520 Base
  • Colply 460 CAP (cold)
  • Sopralene Stick HR GR (SA)
  • Sopralene Flam 180 GR
  • Sopralene Flam 250 GR
  • Soprafix
  • Sopraply GR
Soprema Torched Substrate Elastocol 500 Sopralene Flam 180
Fifteen (15) Year ARCA Warranty Certificate
Manufacturer Primer/Adhesive Base Ply Cap Ply
IKO Meeting CGSB 37-GP-9 TP-180 FF
  • Torchflex TP-250 CAP
  • Torchflex TP-HD-Cap
SOPREMA
  • Colply Adhesive
  • Elastocol Stick primer
  • Sopralene Stick HR 20
  • Sopralene Flam 180
  • Sopralene Flam 250 GR
  • Sopraply Traffic Cap 560
Revised

2017-11

MB-7.5 Accepted Membrane Flashing Cover Boards

.1

Asphalt Core Board (Minimum 3mm (1/8”) thick)
  • IKO Industries Ltd.

    • Protectoboard
  • Hal Industries Inc.

    • Perma-board
  • Soprema

    • Sopraboard

.2

Composite Cover Boards with Factory Laminated SBS Membrane
  • Soprema

    • 12.7mm (1/2”) thick XPressboard HD added October 2016
    • 12.7mm (1/2”) thick Soprabase HD added October 2016
    • 12.7mm (1/2”) thick Soprabase 180 FR (Treated Fibreboard)
    • Soprasmart Board 180 added November 2014
    Revised

    2013-02

  • IKO

    • 12.7mm (1/2”) thick Roofcraft 180 Base FR   [Treated Fibreboard]

MB-7.6 Accepted Liquid-Applied Membrane Flashings

  • Soprema

    • Alsan Flashing   [Polyurethane / Bitumen Resin (one component)]
    • Alsan RS 230   [PMMA Acrylic Resin (two component)]
    • Alsan Polyester Fleece   [Reinforcement Fabric]
  • IKO

    • IKO MS Detail   [Modified Silicone (one component)]
    • Polyester mesh   [Reinforcement Fabric]
  • Siplast

    • Parapro 123 Flashing   [PMMA Resin (two component)]
    • Polyester Pro Fleece   [Reinforcement Fabric]
Added

2012-02

MB-7.7 Accepted Liquid-Applied Membrane Flashings -- 15 Year W.C.

  • Soprema

    • Alsan RS 230   [PMMA Acrylic Resin (two component)]
Added

2017-04