IKO APP Membrane Installation Guidelines
IKO APP Membrane Installation Guidelines
| 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: IKO INDUSTRIES LTD.
Contact Address: See Membership List in Section 1.
Product Group: APP MODIFIED BITUMINOUS MEMBRANES
Country of Origin: Belgium
Country of Manufacture: Canada
- Year First Installed
- B.C.: 1985
- Canada: 1985
1 Description
IKO ARMOURPLAST membranes consist of a polyester or fibreglass mat impregnated on both sides with an APP (atactic polypropylene) modified bitumen compound. The non-woven polyester fabric used in ARMOURPLAST membranes provides a highly elastic body with excellent tensile strength. The high percentage of plasticizing resins in the bitumen compound ensure heat resistance, low temperature flexibility, aging endurance and workability.
The ARMOURPLAST membranes are heat welded to prepared surfaces. The seams are fused, forming a single, continuous watertight membrane.
1.1 GENERAL
- The roofing assembly / material information published in the RCABC Roofing Practices Manual 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.
SYSTEM DESCRIPTION
- .1 Torch-on roofing membrane: consists of an oxidized base ply and cap sheet, separately applied using a proprietary propane torch. Over flame sensitive substrates base sheets are mopped-on or nailed-on or torched over underlay; apply to any prepared roof deck or insulation.
- .2 Range of application: new or re-roofing; from dead-flat to vertical (consult IKO INDUSTRIES LTD.)
DELIVERY, STORAGE AND HANDLING
- .1 Store ARMOURPLAST rolls on a pallet, standing upright on the end opposite the salvage edge, securely covered to protect from moisture.
- .2 Below O° (+32°F): keep rolls in a heated area; install at once without allowing to become cold; do not drop rolls when cold.
SITE CONDITIONS
- .1 Slope limitations:
- - minimum recommended slope 1:50 (1/4" in 12")
- - mechanical fastening required over 1:16 (3/4" in 12")
- - consult IKO INDUSTRIES LTD. for slopes 1:4 (3" in 12")
- .2 Application Temperature:
- - minimum ambient temperature + 4°C (+ 40°F)
- - maximum ambient temperature +38°C (+100°F)
- .3 Chemical incompatibilities: generally those that affect roofing asphalt.
STANDARDS AND APPROVAL (for specific membranes or assemblies consult manufacturer):
- .1 Canadian General Standards Board: CGSB 37-GP-56M
MANUFACTURER'S SERVICES
- .1 Field technicians are available to advise and assist contractors.
- .2 Specifications / Drawings: available from specification manual or custom designed to customer requirements.
- .3 Seminars: presented on a yearly basis or on request.
1.2 MATERIALS
| 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. |
MEMBRANES
Consult the list of Accepted Materials by clicking on the MATERIALS link above.
| Nominal | Approx. | Reinforcing | ||
| Product | Thickness | Weight | Weight | Description |
| mm | kg/m sq | g/m sq | ||
| ARMOURPLAST | 4.2 | 4.9 | 180 | Torch applied, smooth back and granular surface for single ply or two ply systems. |
| Granular | ||||
| ARMOURPLAST | 4 | 4 | 180 | Torch applied, smooth surface both sides, for single ply or single ply or two ply systems. |
| Classic |
- Note: For ease of application we offer ARMOURPLAST in summer and winter grades.
ACCESSORIES
- Armourplast Roofwalk: Additional protection for traffic paths. Granular surfaced, torch applied.
ANCILLARY PRODUCTS
- The selection or omission of roof insulations, vapour retarder, expansion control joints, etc. are design matters which remain the responsibility of the Architect, Engineer, or Owner and are in no way the responsibility of IKO Industries Ltd.
- .1 Insulation: the following are approved for use with the specified membrane.
- - Impregnated and Standard fibreboard conforming to CSA A247-M
- - Expanded polystyrene conforming to CGSB 51-GP-20M, Types 1 & 2
- - Extruded polystyrene conforming to CGSB 51-GP-20M, Type 2 & 4
- - Urethane and isocyanurate unfaced to CGSB 51-GP-21M
- - Urethane and isocyanurate faced to CAN / CGSB-51.25-M86
- - Fibrous Glass to CAN / CGSB-51.3l-M84
- - Cellular Glass to CGSB 51-GP-38M
- .2 Vapour retardants: the following are approved for use with the specified membrane:
- - 2 plies mopped-on No.15 asphalt felts conforming to CSA standard A123.3-M.
- - Proprietary alternatives approved by the membrane manufacturer.
- .3 Primer: Asphalt Primer conforming to CGSB 37-GP-9M.
- .4 Gypsum board: proprietary type approved by membrane manufacturer.
- .5 Mechanical fasteners: In accordance with requirements of RGC Guarantee Standards
- .6 Cants: Asphalt impregnated fibreboard or wood or flame resistant type approved by membrane manufacturer.
- .7 Filter fabric: proprietary type, like “Fabrene V.I.E.” by Dupont Canada Ltd. and approved by membrane manufacturer; for use with protected membrane roof systems.
- .8 Gravel: As per RGC Guarantee Standards.
- .9 Gravel Ballast: (for protected and modified protected membrane assemblies); clean, washed round stone, 25 mm (1") clear size; no stones less than 15 mm (5/8") or larger than 35 mm (1-3/8"); most stones 20 mm to 38 mm (3/4" to 1-1/4") in size).
- .10 Roofing Asphalt: conforming to CSA A123.4-M Type 3 for slopes up to 1:8 (1-1/2" in 12"); conforming to ASTM D312 Type IV for slopes 1:8 (1-1/2" in 12") to 1:4 (3" in 12").
1.3 EXECUTION
PREPARATION
- .1 Ensure surfaces are smooth, dry, clean, and free of sharp projections and depressions.
INSULATION
- .1 Mechanically fasten insulation over nailable decks in accordance with RGC Guarantee Standards.
- .2 Embed insulation in a 1.5 kg / meters squared (30 lb / square) mopping of hot asphalt over non-nailable decks.
- .3 Install 11 mm (7/16") asphalt impregnated fibreboard as an insulation overlay where required by RGC Guarantee Standards.
- .4 Install wood nailing strips on slopes exceeding 1:12 (1" in 12")
BASE SHEET (where required)
- .1 Start at low point and at right angles to the slope.
- .2 Mechanically fasten base sheet to deck according to IKO INDUSTRIES LTD's recommended fastening pattern.
TORCH APPLIED ROOF MEMBRANE
- .1 Start at low point and at right angles to the slope, or in same direction as base sheet; for two ply applications the first ply is applied parallel to the base and to the top ply.
- .2 Unroll 1.2 m to 2.0 m (4' to 6') and align membrane.
- .3 Torch to suitable substrate, with proprietary propane torch, directing flame to the exposed surface of the roll as well as to the deck or membrane underneath.
- .4 Lap sides 88.9 mm (3-1/2") and ends 150 mm (6"); staggering end laps 304.8 mm (12") minimum.
- .5 Maintain approximately 10 mm (3/8") flow-out of bitumen at overlapping seams.
- .6 Roll or trowel seam.
- .7 Carry membrane 4" above top of cant strip.
- .8 Re-roll opposite end of roll not torched, and install in the same manner.
- .9 Mechanically fasten headlaps on slopes over 1:16 (3/4" in 12")
CAP FLASHING
- .1 Torch Armourplast pre-flashing form 100 mm (4") from toe of cant to 100 mm (4") above cant.
- .2 Torch membrane flashings over the roofing membrane from 150 mm (6") from toe of cant to minimum 200 mm (8") above roof systems surface.
- .3 Lap sides minimum 88.9 mm (3-1/2").
- .4 Ensure bitumen flow-out of approximately 10 mm (3/8").
- .5 Use round-nose heated trowel to blend in laps and seams, being sure to trowel in any voids.
2 Membrane Assemblies
2.1 Exposed Membrane - Un-insulated
| Slope Limitation: | No Limit | ||||
| In-Service Performance: | Min.: | -10°C | (+14°F) | } | Required membrane tensile strength varies. Contact manufacturer for specific recommendations. |
| Temperature of the Membrane: |
Min.: | -18°C | (0°F) | ||
| Min.: | <-18°C | (0°F) | |||
| Max.: | +50°C | (+122°F) | |||
| Components | Options | Comments or Cautions |
|---|---|---|
| General | ||
| Roof Deck | Wood / Plywood | Prime wood and concrete decks and surfaces to be directly adhered with bituminous materials. Wood board decks require a protection / base sheet. Steel decks require an underlay for membranes. |
| Concrete | ||
| Steel | ||
| Underlay | Gypsum | Minimum 12.7 mm (1/2") mechanically fastened to steel decks. |
| Plywood | ||
| Protection Sheet | No.28 Glass Base | Mechanically fasten over wood board decks. |
| Pre-approved alternative | ||
| Single Ply Systems | ||
| Roof membrane | Armourplast Granular | Torch applied single ply membranes, over concrete decks or over mechanically fastened protection sheet on steel or wood decks |
| Armourplast Classic | ||
| Modified Single Ply Systems | ||
| Base Sheet | No.28 Glass | Mopped or mechanically fastened |
| Armourplast Classic | Torch-applied | |
| Cap Sheet | Armourplast Classic | Torch applied. Install parallel to base sheet. |
| Armourplast Granular | ||
| Flashing Membrane | Amourplast Flashing | Torch-applied |
2.2 Exposed Membrane - Insulated
| Slope Limitation: | No Limit | ||||
| In-Service Performance: | Min.: | -10°C | (+14°F) | } | Required membrane tensile strength varies. Contact manufacturer for specific recommendations. |
| Temperature of the Membrane: |
Min.: | -18°C | (0°F) | ||
| Min.: | <-18°C | (0°F) | |||
| Max.: | +50°C | (+122°F) | |||
| Components | Options | Comments or Cautions |
|---|---|---|
| General | ||
| Roof Deck | Wood / Plywood | Prime wood and concrete decks and surfaces to be directly adhered with bituminous materials |
| Concrete | ||
| Steel | ||
| Thermal Barrier | Gypsum | Minimum 12.7 mm (1/2") may be required between steel deck and a combustible insulation (see National Building Code of Canada) |
| Vapour Retarder | Determined by Design Authority | |
| Insulation | Fibreboard | A fibreboard overlay (one or two layers) is required over heat sensitive and foamed insulation. A plywood overlay or mechanically fastened protection sheet may be required for torched membranes. |
| Glass Fibre | ||
| Expanded polystyrene | ||
| Extruded polystyrene | ||
| Polyisocyanurate | ||
| Insulation Overlay | 11 mm (7/16") asphalt impregnated fibreboard | Where required, install according to RoofStar Guarantee Standards |
| Single Ply Systems | ||
| Roof membrane | Armourplast Granular | Torch applied single ply membranes, over concrete decks or over mechanically fastened protection sheet on steel or wood decks |
| Armourplast Classic | ||
| Modified Single Ply Systems | ||
| Base Sheet | No.28 Glass | Mopped or mechanically fastened |
| Armourplast Classic | Torch-applied | |
| Cap Sheet | Armourplast Classic | Torch applied. Install parallel to base sheet. |
| Armourplast Granular | ||
| Flashing Membrane | Amourplast Flashing | Torch-applied |
2.3 Protected and Modified Protected Membrane Assemblies
| Slope Limitation: | 1:6 (2" in 12") | ||||
| In-Service Performance: | Min.: | -10°C | (+14°F) | } | Required membrane tensile strength varies. |
| Temperature of the Membrane: |
Min.: | -18°C | (0°F) | ||
| Min.: | <-18°C | (0°F) | |||
| Max.: | +50°C | (+122°F) | |||
| Components | Options | Comments or Cautions |
|---|---|---|
| General | ||
| Roof Deck | Wood / Plywood | Prime surfaces where membranes are directly adhered |
| Concrete | ||
| Steel | ||
| Underlay | Gypsum | Minimum 12.7 mm (1/2") required over steel decks in a PMR assembly |
| Plywood | ||
| Thermal Barrier | Gypsum | Minimum 12.7 mm (1/2") may be required between steel decks and combustible insulations (see National Building Code of Canada) |
| Insulation | Fibreboard | Under membrane in a MPMR. A Fibreboard overlay (one or two layers) is required over heat sensitive and foamed insulation |
| Glass Fibre | ||
| Expanded polystyrene | ||
| Extruded polystyrene | ||
| Polyisocyanurate | ||
| Insulation Overlay | 11 mm (7/16") asphalt | Where required, install according to RoofStar Guarantee Standards |
| Single Ply Systems | ||
| Roof membrane | Armourplast Granular | Torch applied single ply membranes, over concrete decks or over mechanically fastened protection sheet on steel or wood decks |
| Armourplast Classic | ||
| Modified Single Ply Systems | ||
| Base Sheet | No.28 Glass | Mopped or mechanically fastened |
| Armourplast Classic | Torch-applied | |
| Cap Sheet | Armourplast Classic | Torch applied. Install parallel to base sheet. |
| Armourplast Granular | ||
| Flashing Membrane | Amourplast Flashing | Torch-applied |
| Insulation | Extruded Polystyrene (Type 4) | Loose laid, required filter fabric and ballast. |
| Concrete topped extruded polystyrene (Type 4) | Loose laid, provides finished surface of roof. | |
| Filter Fabric | 100% Polyolefin Pre-approved Alternative | Loose laid |
| Ballast | Gravel pavers | According to insulation manufacturer's requirements. On pedestals. |