ACCESSORIES
Stack-Jack Flashings: 1.6 mm (0.063”) thick x 300 mm (12”) high x diameter to suit, seamless, spun aluminum sleeve flashings with premoulded urethane insulation on inner side of sleeve and 100 mm (4”) wide bituminous paint primed flange with removable 1.2 mm (0.047”) thick aluminum cap with neoprene grommet cap seal and 1.6 mm (0.063”) thick aluminum type bitumen protection cup. Provide “Flash-Tite Flashings Model VSC-G” by Lexsuco Canada.
Flashings for Flexible Conduit: 1.3 mm (0.051”) thick x 300 mm (12”) high x diameter to suit, seamless, spun copper sleeve flashings with premoulded urethane insulation on inner side of sleeve, 150 mm (6”) wide bituminous paint primed sleeve flange with 0.69 mm (0.027”) thick flexible copper liner with premoulded urethane insulation on inner side of liner. Provide “Flash-Tite Flashings, Model WPF-12” by Lexsuco Canada.
Flashings for “B” Vents: 2.1 mm (0.083”) thick x 300 mm (12”) high x diameter to suit, seamless spun aluminum sleeve flashing with sloping sides having 50 mm (2”) wide perforated aluminum vent holes at top of sleeve, 100 mm (4”) wide bituminous paint primed sleeve flange with 2.1 mm (0.083”) thick split aluminum collar, aluminum rivets, and 4.8 mm (3/16”) diameter stainless steel nuts and bolts and 1.6 mm (0.063”) thick aluminum type bitumen protection cup. Provide “Flash-Tite B-Vent Flashings” by Lexsuco Canada.
Flashings for Gas Lines: 1.6 mm (0.063”) thick x 300 mm (12”) high x diameter to suit, seamless spun aluminum sleeve flashing with 50 mm (2”) wide perforated aluminum vent holes at top of sleeve, 100 mm (4”) wide bituminous paint primed sleeve flange with removable 1.3 mm (0.051”) thick formed aluminum collar and 2.1 mm (0.083”) thick aluminum type bitumen protection cup. Provide “Flash-Tite Flashings” by Lexsuco Canada.
EXECUTION
EXAMINATION
Verification of Conditions:
Verify actual site dimensions and location of adjacent materials prior to commencing work. Notify Consultant in writing of any conditions which would be detrimental to installation.
Verify roof penetrations and drains are present in quantity required. Verify that roof drains are securely clamped in place.
Verify wood blocking is securely anchored to deck and nailers match thickness of anticipated roof insulation.
Examine substrate for compliance of conditions that affect installation and performance of roof system.
Evaluation and Assessment: Proceed with installation of roof after unsatisfactory conditions have been corrected. Commencement of work implies acceptance of previously completed work.
PREPARATION
Surface Preparation: Ensure new [and] [/] [or] [existing] metal decking is clean, dry and properly anchored prior to roof installation.
APPLICATION
Safety Precautions: Refer to Product MSDS sheets for any safety requirements when applying components.
Vapour Retarder to Steel Deck:
Apply vapour retarder adhesive “Armourgard Vapour Retardant Adhesive” to male flutes of deck at a rate of 0.43 L/m2 (257 sq ft/gal).
Unroll vapour retarder “Armourgard Vapour Retardant” into freshly applied vapour retarder adhesive “Armourgard Vapour Retardant Adhesive” ensuring sidelaps fall over a male flute for joining later.
Coat side laps with vapour retarder adhesive “Armourgard Vapour Retardant Adhesive” and join so they are overlapped by a minimum of 13 mm (2”).
Overlap and seal endlaps a minimum of 150 mm (6”) with vapour retarder adhesive “Armourgard Vapour Retardant Adhesive”.
Encapsulate insulation using vapour retarder “Armourgard Vapour Retardant” to affect a proper tie-in to building’s continuous air/vapour barrier system and encapsulation of insulation.
Self-Adhered Air/Vapour Barriers:
Apply primer by roller or spray to all surfaces to be covered with self-adhered membrane as required and allow to dry.
Unroll and align self-adhered membrane centered at low point of roof or drain. Apply self-adhered membrane
Apply self-adhered membrane complete and continuous to prepared and primed substrate in an overlapping shingle fashion by removing release film providing 75 mm (3”) side and end laps in accordance with manufacturer’s written instructions. Stagger all vertical joints. Promptly roll all laps and self-adhered membrane with a counter top roller to affect the seal.
Rigid Insulation:
Install 1220 mm x 4880 mm (4’- 0” x 8’- 0”) sheets of insulation “IKOTherm” so joints are tightly fitted and staggered from adjacent boards. Firmly secure each board with 4 screws and stress plates.
Ensure pre-securement pattern is performed so the 4 fasteners are equally spaced on insulation “IKOTherm”.
Fill gaps in excess of 3 mm (1/8”) with fully adhered insulation “IKOTherm” material trimmed from same insulation being installed.
Install insulation “IKOTherm” around roof drains forming a sump of 1220 mm x 1220 mm x 13 mm (4’ - 0” x 4’ - 0” x 1/2”). Ensure minimum required RSI (R) value is achieved in sump area.
Delete Section below if coverboard is not used.
Coverboard:
Stagger joints over insulation “IKOTherm” when applying 1220 mm x 1520 mm (4’- 0” x 5’- 0”) sheets of coverboard “Protectoboard”.
When using coverboard “Protectoboard”, insulation “IKOTherm” can be loose-laid and pre-securement can be affected via fasteners through coverboard “Protectoboard” and insulation “IKOTherm” at 1 time. If installing insulation “IKOTherm” with pre-securement it is only necessary to install 2 fasteners for every 1220 mm x 1520 mm (4’ – 0” x 5’ – 0”) coverboard “Protectoboard” sheet as a pre-securement.
Lay coverboard “Protectoboard with joints offset minimum 300 mm (12") from underlying layer.
At drains ensure that sump depth is kept to a minimum of 13 mm (1/2”) below finished roof surface.
Roof Membrane:
Starting at lowest point of roof or at centerline of roof drain, unroll and dry fit “Fast-N-Stick 180 Base” base sheet and allow it to relax.
Remove protective film over sidelap and commence installation of fasteners starting at center of “Fast-N-Stick 180 Base” base sheet and working out towards the ends. Locate fasteners towards inner edge of selvage strip at 610 mm (24”) oc.
Apply next sheet of “Fast-N-Stick 180 Base” base sheet by first dry fitting into position then removing protective film on underside of “Fast-N-Stick 180 Base” side lap and adhering this to recently installed “Fast-N-Stick 180 Base” base sheet, covering exposed fasteners fully in the process.
Continue across field of roof until entire roof is covered with “Fast-N-Stick 180 Base” base sheet. Make sure end laps are staggered from each other by a minimum of 610 mm (24”) in the process.
Secure end laps by overlapping bottom sheet with adjoining sheet and securing through both with 4 fasteners, 2 in middle and 2 over selvage edges. Cut a strip of [“Fast-N-Stick 180 Base”] [“TP-180-FF Base”] base sheet across width that is 300 mm (12”) in depth and position over endlap and heat weld into place.
Ensure there are not exposed fasteners in sight when the field is completed.
Perimeter and Corner Wind Up-Lift Enhancements:
Due to higher wind pressures in corners and perimeters “Fast-N-Stick 180 Base” base sheet requires additional fasteners. For buildings FM Insured, follow FM prescriptions dictated by FM Loss Prevention Data Sheets 1-28 and 1-29.
For perimeter and corner prescriptive enhancement apply following: increase fastener density in perimeter zones by locating fasteners in 1 row 610 mm (24”) oc in selvage edge and 1 row 610 mm (24”) oc in the middle of the base sheet, stagger rows. In corner locate 1 row at 610 mm (24”) oc in the selvage edge and 2 rows located 610 mm (24”) in the middle of the sheet. Space fasteners 4” from center line on either side. Stagger rows of fasteners in sidelap and middle of base sheet. Use same fasteners as those used in field.
Use a single burner torch system only for heat welding of [“Torchflex TP-250 CAP”] [“Torchflex Prevent TP-250”] [“Torchflex Prevent Premium TP-250”] cap sheet and “Fast-N-Stick 180 Base” base sheet end lap details.
Install [“Torchflex TP-250 CAP”] [“Torchflex Prevent TP-250”] [“Torchflex Prevent Premium TP-250”] cap sheet via heat welding over “Fast-N-Stick 180 Base” base sheet in accordance with manufacturer’s instructions. Stagger side laps from “Fast-N-Stick 180 Base” base sheet sidelaps minimum 150 mm (6”), stagger end laps minimum 150 mm (6”) from “Fast-N-Stick 180 Base” base sheet end laps and 610 mm (24”) from other “Torchflex TP-250 CAP” cap sheet end laps.
Fully adhere [“Torchflex TP-250 CAP”] [“Torchflex Prevent TP-250”] [“Torchflex Prevent Premium TP-250”] cap sheet and “Fast-N-Stick 180 Base” base sheets membranes free of wrinkles, buckles, fishmouths, voids or seams bucking natural flow of water.
Apply temporary water cut-offs extending a minimum of 150 mm (6”) onto completed roof membrane at end of each day and remove fully on start of next Working Day.
Base Flashings and Cap Flashings:
Install new wood blocking and metal where required and as specified in other Sections of this Specification.
Install base flashing “ArmourBond Flash” in accordance with Drawings and roofing membrane manufacturer’s requirements.
Extend tops and vertical laps of base flashing “ArmourBond Flash” flashings over parapets and nail on exterior face using roofing nails spaced 200 mm (8”) oc. Terminate base flashing “ArmourBond Flash” at 450 mm (18”) for parapets above 450 mm (18”) in height and fix in place using a termination bar. On lower parapets install flashing minimum 200 mm (8”) above finished roof surface.
Install base flashing “ArmourBond Flash” in widths of 1 m (39”) width staggering seams a minimum of 300 mm (12”) from laps in base membrane. Prime parapets fully prior to application of base flashing “ArmourBond Flash” with [“AquaBarrier Primer”] [“S.A.M. Primer”]. Ensure membrane runs onto field a minimum of 200 mm (8”). Place into position and roll smooth to ensure a solid bond.
Thoroughly prime exposed metal with [“AquaBarrier Primer”] [“S.A.M. Primer”] prior to installing base flashing. Follow manufacturer’s instructions as to dry time.
Provide reinforcement gusset at inside corners in accordance with membrane manufacturer.
Cut cap flashing [“Torchflex TP-250 CAP”] [“Torchflex Prevent TP-250”] [“Torchflex Prevent Premium TP-250”] into 1 m (39”) wide strips ensuring coverage of cap flashing [“Torchflex TP-250 CAP”] [“Torchflex Prevent TP-250”] [“Torchflex Prevent Premium TP-250”] on field minimum of 150 mm (6”) and terminate ends on vertical base flashing “ArmourBond Flash” sheets minimum 200 mm (8”) above finished roof surface or equal to termination of base flashing “ArmourBond Flash”. Ensure cap flashing [“Torchflex TP-250 CAP”] [“Torchflex Prevent TP-250”] [“Torchflex Prevent Premium TP-250”] is not carried over parapet and terminated on exterior face. Apply sidelaps minimum 150 mm (6”) from base flashing sidelaps and minimum 150 mm (6”) from cap membrane [“Torchflex TP-250 CAP”] [“Torchflex Prevent TP-250”] [“Torchflex Prevent Premium TP-250”] sidelaps on field. Follow flashing details as recommended by membrane manufacturer.
Metal Flashings: Install in accordance with SMACNA specifications and/or CRCA FL series details.
Special Techniques:
Cold Weather Precautions:
Follow cold weather application guidelines from manufacturer when temperatures are expected to be below 5°C (40°F). If such guidelines are unavailable or not known, contact membrane manufacturer for clarification.
During cold weather store roll goods and pail goods in a heated environment and bring to roof site just prior to use. Unroll and allow SBS rolls to relax fully prior to installation. Time may vary for this depending on sunlight and air temperature. If in doubt, call membrane manufacturer for instruction.
SITE QUALITY CONTROL
Site Tests and Inspections:
Verify whether Cash Allowance includes allowance for inspection.
Consultant may appoint an independent roofing inspection company. Cost of inspection will be paid from Cash Allowance specified in Section 01 20 00.
If required by inspection company or by Consultant, make cut tests. Roofing Contractor to pay costs of tests and making good roofing after completion of test.
Owner may engage independent inspection company to inspect work of this Section. Give minimum 2 weeks’ notice of starting work and allow inspector free access. [Inspection may include thermographic survey of completed roof.]
Inspection - Roof Levels:
Before roofing is commenced, inspect and check roof surfaces for levels.
Undertake a series of spot level checks to determine unevenness in roof decks which may result in pools of water remaining on completed roofing in excess of 13 mm (1/2") depth.
Ensure deck has been inspected and approved by Consultant prior to start of roofing work.
Non-Conforming Work: Replace damaged work which cannot be satisfactorily repaired, restored or cleaned, to satisfaction of Consultant at no cost to Owner.
Manufacturer Services: Arrange for membrane manufacturer representative to visit site on day roofing is commenced and periodically thereafter, to ensure work is properly performed. Upon completion of work of this Section, ensure manufacturer's representative inspects roof and verifies quality of work to yield weathertight waterproofing roofing system and issue manufacturer's warranty. Ensure manufacturer's representative informs Consultant, Contractor and Subcontractor executing work of this Section promptly in writing when inspection is complete and provide detailed report.
CLEANING
Waste Management: Discard and legally dispose components that cannot be applied within its stated shelf life to requirements of authorities having jurisdiction.
PROTECTION
Take necessary precautions to protect Owner’s property and adjacent properties, including trees, shrubs, buildings, sanitation, water piping, gas piping, electrical service and miscellaneous cabling from damage which may result from work of this Section.
For most of our Projects 13 mm (1/2") thick board is sufficient. For large Projects having lots of roof traffic use 19 mm (3/4") thick plywood.
Provide protection covering out of 13 mm (1/2") [19 mm (3/4")] thick plywood underlaid with 25 mm (1") thick polystyrene insulation board adhered to it, over roofed areas when working from, or over, such roof surfaces. Provide such protection below hoist rigs, ladders, pallets of material and in other circumstances where roofing membrane is exposed to potential damage. Secure protection boards mechanically against wind storm loss.
Protect finished wall and roof surfaces against damage of any kind. Protect finished sheet metal work and membrane flashing against punctures and damage of any kind. Be responsible for damage sustained by work of this trade. Do not use equipment over roofing materials which would cause damage to materials in any way.
Protect surrounding work, and adjacent building and other property from damage during roofing operations, taking particular care to prevent bitumen droppings and discolouration of surrounding buildings by smoke from kettles. Locate kettles to prevent smoke entering adjacent and Project buildings.
Use protection covering specified in work areas and along work routes as required to prevent damage to steel deck, or [sheathing and] roofing. Ensure workers stay off newly heat welded membrane until cooled.
Verify no vent pipes venting flammable fumes (i.e. fuel storage tanks) are located in area of work.
Temporarily block drain pipes during application of roofing membrane. Remove blocking each night or when work is not in progress and after work of this Section is completed.
Verify reference to existing roof. Edit reference to existing roofing system if not applicable. Verify if building is under negative pressure or preferably if units can be turned off during roofing near openings.
Protect [existing and] completed portions of roof from damage.
At conclusion of each day's work, seal exposed edges of roof insulation. Remove when resuming work.
Do not heat weld over or near flammable substrates such as fibreboard.
Fire Protection:
Respect safety measures described in manufacturer's literature as well as local jurisdictional authorities.
Have a 9 kg (20 lb) dry chemical fire extinguisher acceptable to authorities having jurisdiction, fully charged and in operable condition at every location where open flames are used.
During roofing maintain a clean site and keep 2 foam or dry type fire extinguishers on roof within easy access of heat welding application and in any open flame location while roofing is in progress.
Verify no vent pipes venting flammable fumes (i.e. fuel storage tanks) are located in area of work.
Do not have gasoline or other flammable solvents on roof while heat welding.
Delete last sentence if watchman is not required on site. Check requirements of Division 1.
Be vigilant against self-starting fires at end of roofing operations cease for day. Use a heat detector gun to spot any smouldering or concealed fire. Examine roof for hot spots 1 hour after completion of roofing operations, especially at flashings and around roof penetrations. [Alert watchman of such possibilities.]
ATTACHMENTS
Details:
Roof Perimeter Details:
Parapet Wall with Metal Coping: follow IKO details MB-15 and MB-21.
Drip Edge or Gravel Stop: follow IKO details MB-11 and MB-12.
Reglet Mounted Counterflashing: follow IKO detail MB-18.
Surface Mounted Counterflashing: follow IKO detail MB-19.
Through Wall Scupper: follow IKO detail MB-22.
Downspout Scupper Box: follow IKO detail MB-23.
Outside Corner: follow IKO detail MB-34.
Inside Corner: follow IKO detail MB-35.
Roof Penetration Details:
Curbs: follow IKO detail MB-34.
Vent Pipes: follow IKO detail MB-13.
Roof Drains: follow IKO detail MB-24.
Support Column or Hot Pipe Flashing: follow IKO detail MB-14.
Curb Expansion Joints: follow IKO detail MB-26.
Wall Expansion Joint: follow IKO detail MB-27.
IKO Industries manufactures and sells waterproofing materials. IKO does not practice architecture or engineering. Therefore the design responsibility remains with the architect, engineer, or consultant. We hope the information given here will of some assistance. It is based upon data considered to be true and accurate and is offered solely for the user's consideration, investigation and verification. Nothing contained herein is representative of a warranty or guarantee for which IKO Industries can be held legally responsible. IKO does not assume any responsibility for any misinterpretation or assumptions the reader may formulate.
END OF SECTION
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