HAL Industries BUR 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: HAL INDUSTRIES INC.

Contact Address: See Membership List in Section 1.

Product Group: POLYESTER FELTS, BUILT-UP ROOF

Country of Origin: Canada of Manufacture: Canada, U.S.A.

Year First Installed: B.C.: 1984

Canada: 1984

1 Description

POLYMAX felts consist of engineered polyester fabrics which have been saturated with roofing grade asphaltic bitumen. These felts are designed to provide long-term performance in most climatic conditions and are applied using conventional roofing equipment and methods.

POLYMAX polyester felts are available with either 180 g / meters squared or 250 g / meters squared spun bond polyester reinforcing mats. The polyester provides an inorganic mat with proven tensile strength and tear and puncture resistance.

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.

1. 1. SYSTEM DESCRIPTIONS
      1. Polymax System: install three plies of POLYMAX 180 or POLYMAX 250 felt in full moppings of hot asphalt; surface with pour coat and gravel to RGC Guarantee Standards; qualifies for an RGC five (5) or ten (10) year Guarantee (with compliance to RGC Guarantee Standards).
      2. Range of application: POLYMAX built-up roofing systems can be used wherever conventional built-up felt and asphalt roofing is presently used.
   2. DELIVERY, STORAGE, AND HANDLING
      1. Deliver and store materials in original packages and containers with manufacturer's seals and label intact.
      2. Keep roofing materials dry; protect from adverse weather conditions.
      3. Store rolls on end.
   3. SITE CONDITIONS
      1. Slope limitations:
         1. • minimum recommended slope 1:50 (1 / 4" in 12")
            • backnail each felt on slopes over 1:12 (1" in 12")
   4. STANDARDS AND APPROVALS
      1. Tested to applicable portions only of CGSB 37-GP-56M by Intertek Testing Services.
   5. MANUFACTURER'S SERVICES
      1. Applicator training: available
      2. Technical service: representatives are available for design consultation and assistance.
      3. Specification / Drawings: specification and detail drawing assistance are available.

1.2 MATERIALS

1. 1. ROOFING FELTS
      
      

      Felt	Thickness	Mat	Mass	Description
      mm	g/m2	kg / m2
      Polymax 180	1.0 mm	180 P	0.50	Spun-bonded polyester mat saturated with asphalt. Hot asphalt-applied.
      Polymax 250	1.4 mm	250 P	0.73

   2. ANCILLARY PRODUCTS
      1. Asphalt: conform to CSA A123.4M Type 3 asphalt.
      2. Base sheet: asphalt-coated base sheet conforming to CSA A123.2 Type CF; or Hal Industries Inc. No. 30 organic felt.
      3. Mineral surfaced roofing: 2 mm granulated SBS
      4. Gravel: to RGC Guarantee Standards.

1.3 EXECUTION

1. 1. PREPARATION
      1. Prepare decks according to good roofing practices; decks should be clean, dry, and free of voids or cracks; ensure concrete decks are cured.
      2. Ensure wood blocking, curbs, and cant strips are solidly set and reglets and nailing strips are in place.
      3. Wood decks: ensure deck is tightly nailed; cover splits and knot holes with galvanized sheet metal, nailed securely.
   2. INSULATION AND INSULATION OVERLAY
      1. Mechanically fasten insulation over nailable decks according to RGC Guarantee Standards.
      2. Embed insulation in a 1.5 kg / m² (30 lb / square) mopping of hot asphalt over non-nailable decks.
      3. Install accepted insulation overlay board as an insulation overlay, where required, according to RGC Guarantee Standards.
      4. Tape insulation joints where an insulation overlay is not used.
      5. Install nailing strips on slopes over 1:12 (1" in 12") at 600 mm (24") o / c.
   3. POLYMAX 180 OR 250 THREE-PLY BUILT-UP ROOF MEMBRANE

      [qualifies for a Five (5) or Ten (10) year RoofStar Guarantee]

      1. Start at low point and at right angles to slope.
      2. Ensure asphalt temperature does not exceed +237°C (+470°F) at point of application or severe deformation of the felt may occur.
      3. Mop three plies POLYMAX 180 or 250 roofing felt in 1.5 to 1.7 kg / m² (30 to 35 lb / square) hot asphalt per ply; ensure a puddle of asphalt precedes the roll.
      4. Firmly broom or dry mop felt surface while asphalt is hot, eliminating voids and forcing membrane into hot asphalt.
      5. Follow lap lines on felt; stagger end laps.
      6. Backnail each mopped felt where slopes exceed 1:12 (1" in 12"), 600 mm (24") o / c.
      7. Install membrane flashing of two plies POLYMAX 180 or POLYMAX 250 and one ply mineral surfaced roofing in full moppings of hot asphalt; mould POLYMAX into corners and glaze coat surface; install mineral surfaced cap sheet where membrane flashing will be exposed.
   4. POUR COAT AND GRAVEL
      1. Install asphalt pour coat and gravel according to RGC Guarantee Standards for a built-up roof membrane.
   5. PROTECTED MEMBRANE OR MODIFIED PROTECTED MEMBRANE ROOF ASSEMBLY
      1. Loose lay CGSB 51-GP-20M Type 4 extruded polystyrene rigid insulation over completed membrane; butt boards tightly together.
      2. Install filter fabric over insulation surfaces, in shingle fashion, in direction of slopes, lapping 300 mm (12").
      3. Install gravel or pavers over insulation. Refer to insulation manufacturer's latest printed recommendation for gravel rates.

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2 Membrane Assemblies

2.1 Exposed Membrane: Un-insulated

Slope Limitation:	Min.:	1:50	(1 / 4" in 12")
	Max.:	1:5	(2-1 / 2" in 12")
	Backnail over:	1:12	(1" in 12")
	Note: Only components or products listed here and in the RGC Accepted Materials List may be used. No substitutes are allowed for guarantee purposes.

ROOF ASSEMBLY
Components	Options	Comments or Cautions
Roof Deck	Plywood/Wood Concrete Steel	Tape plywood joints. Prime surfaces to be directly adhered with bituminous materials. Wood board decks require a nailed base sheet. Steel decks require an underlay for membrane.
Underlay	Plywood Gypsum	Minimum 12.7 mm (1 / 2") thickness required, mechanically fasten to steel deck.
Asphalt	Type 3	Mop on 1.5 to 1.7 kg / m2 (30 to 35 lb / square) per ply.
BUILT-UP MEMBRANE
Base Sheet	Hal Industries No.30 organic felt Asphalt-coated base sheet	Mechanically fasten to wood decks.
Roof Membrane	Polymax 180 felt Polymax 250 felt	Install three plies Polymax 180 or Polymax 250 roof membrane and two plies membrane flashing.
Qualifies for a five (5) or ten (10) year RoofStar Guarantee.
Cant Protection Membrane	2 mm granulated SBS	Install in hot asphalt over membrane flashing. Carry from top of cant 50 mm (2") onto roof membrane.
Membrane Surfacing	Pour coat and gravel	Install according to RGC Guarantee Standards for a five (5) or ten (10) year Guarantee.

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2.2 Exposed Membrane: Insulated

Slope Limitation:	Min.:	1:50 (1 / 4" in 12")
	Max.:	1:5 (2-1 / 2" in 12")
	Backnail over:	1:12 (1" in 12")
Note: Only components or products listed here and in the RGC Accepted Materials List may be used. No substitutes are allowed for guarantee purposes.

ROOF ASSEMBLY
Components	Options	Comments or Cautions
Roof Deck	Wood / Plywood Concrete Steel	Prime upstands, curbs, and surfaces to be directly adhered with bituminous materials.
Thermal Barrier	Gypsum	Minimum 12.7 mm (1 / 2") may be required between steel deck and combustible insulations (see Building Code).
Vapour Retarder		The requirement for a vapour retarder is determined by the design authority.
Insulation	Glass fibreboard Extruded polystyrene (Type 1 & 2) Expanded polystyrene (Type 1 & 2) Polyurethane Polyisocyanurate Fibreboard Perlite	An acceptable overlay board (one or two layers) is required over heat sensitive and foamed insulations. Tape overlay board joints. Tape insulation joints where an underlay is not required.
Insulation Overlay	Accepted overlay board	As required. Install according to RGC Guarantee Standards. Tape overlay board joints.
BUILT-UP MEMBRANE
Roof Membrane	Polymax 180 Polymax 250	Install three plies of Polymax roof membrane and two plies of membrane flashing. Qualifies for a five (5) or ten (10) year RoofStar Guarantee.
Cant Protection Membrane	2 mm granulated SBS	Install in hot asphalt over membrane flashing. Carry from top of cant 50 mm (2") onto roof membrane.
Membrane Surfacing	Pour coat and gravel	Install according to RGC Guarantee Standards Surfacing for a five (5) or ten (10) year Guarantee.

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2.3 Protected and Modified Protected Membrane Assemblies

Slope Limitation:	Min.:	1:50 (1 / 4" in 12")
	Max.:	1:6 (2" in 12")
	Backnail over:	1:12 (1" in 12")
	Note: Only components or products listed here and in the RGC Accepted Materials List may be used. No substitutes are allowed for guarantee purposes.

ROOF ASSEMBLY
Components	Options	Comments or Cautions
Roof Deck	Wood / Plywood Concrete Steel	Prime surfaces to be directly adhered with bituminous materials.
		For PMR: tape plywood joints. Wood board decks require a nailed separation sheet. Steel decks require an underlay for the membrane.
Underlay	*Plywood	Minimum 12.7 mm (1 / 2") thickness required,mechanically fasten to steel deck under PMR assemblies.
Thermal Barrier	Gypsum	Minimum 12.7 mm (1 / 2") may be required between steel deck and a roof system using combustible insulations (see Building Code).
Vapour Retarder		MPMR assemblies may require a vapour retarder. The requirement for a vapour retarder is determined by the design authority.
Insulation	Glass fibreboard Extruded polystyrene (Type 2 & 4) Expanded polystyrene (Type 1 & 2) Polyurethane Polyisocyanurate Fibreboard Perlite	Under membrane in a MPMR assembly. An acceptable overlay board (one or two layers) is required over heat sensitive and foamed insulations. Tape insulation joints where an overlay is not required.
Insulation Overlay	Accepted overlay board	As required. Install according to RGC Guarantee Standards.
Asphalt	Type 3	Mop on 1.5 to 1.7 kg / m2 (30 to 35 lb / square) per ply.
BUILT-UP MEMBRANE
Base Sheet	Hal Industries No.30 organic felt Asphalt-coated base sheet	For PMR, mechanically fasten over wood decks and, optionally, over plywood decks.
Roof Membrane	Polymax 180 Polymax 250	Install three plies of Polymax 180 or Polymax 250 roof membrane and two plies of membrane flashing. Qualifies for a five (5) or ten (10) year RoofStar Guarantee.
Cap Flashing Membrane	2 mm granulated SBS	Install in hot asphalt over membrane flashing. Carry from top of cant 50 mm (2") onto roof membrane.
Flood Coat	Type 3 asphalt	Over completed roof membrane, install a 3.0 kg / m2 (60 lb / square) flood coat of asphalt.
Insulation	Extruded polystyrene (Type 4)	Loose-laid over roof membrane, requires filter fabric and ballast.
	Concrete-topped extruded polystyrene (Type 4)	Loose-laid, provides finished surface.
Filter Fabric	100% Polyolefin	Loose-laid over insulation.
Ballast	Gravel Pavers	Deck must be capable of withstanding loads. Install according to insulation manufacturer's recommended application rate for the specified insulation thickness.

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