Section 07535 ROOFTOP ICE AND SNOW MELTING PATHWAY AND DRAIN PROTECTION SYSTEM (LOOSELY LAID AND ELECTRIFIED)

1. GENERAL
a. RELATED DOCUMENTS
i. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this section.

b. SUMMARY
i. This Section includes the following:

(1) Loosely laid modular interlocking molded rubber base.
(2) Electrified rubber ice and snow control mats.
(3) Electrified Downspout Cables
(4) Loose laid modular interlocking molded rubber drain protection unit.
(5) Snow and Temperature Sensor/Controller
(6) Electrical Supply Panel and Wiring

ii. Related Sections include the following:

(1) Division 7 Section “Roof Accessories”
(2) Division 15 Section “Plumbing Specialties” for roof drains.
(3) [Division 16 Section “Electrical Wiring”

c. DEFINITIONS
i. Roofing Terminology: Refer to ASTM D 1079 and glossary of NRCA’s “The NCRA Roofing and Waterproofing Manual” for definition of terms related to roofing work in this section.

ii. Interlocking, when referring to the loosely laid modular rubber base or the drain protection unit, shall mean that the units shall connect one to another independent of any intermediary unit or devise and that the connection shall be accomplished such that the units shall be joined in such a manner that they shall not be able to be dislodged with normal forces in any direction; i.e. neither northward, southward, eastward, westward, upward and downward.

d. PERFORMANCE REQUIREMENTS
i. General: Provide and deploy loosely laid modular interlocking molded rubber base and drain units over existing roof to create pedestrian pathways from points to be determined by architect and continuing to and including over designated downspout drains. Supply and deploy electrified rubber ice and snow control mats on top surface of pathways securing them in place to modular interlocking molded rubber base using factory installed grommet holes and additional field installed grommet holes according to manufacturer's guidelines and as determined to be necessary given local conditions. Supply and install electrical power cables, junction boxes, electrical supply panel and snow and temperature sensor/controller at appropriate locations in support of electrified rubber ice and snow control mats.

ii. Material Compatibility: Provide materials that are compatible with one another under conditions of service and application required and such that will coexist harmoniously with whatever roofing product may be deployed beneath them.

e. SUBMITTALS
i. Product Data: For each type of product indicated.

ii. Shop Drawings: For rooftop ice and snow control pathway system. Include plans, elevations, section, details and attachments to other work.

(1) Rooftop ice and snow control pathway and drain protection system deployment plan.
(2) Electrical wiring plan.

iii. Samples for Verification: For the following products:

(1) Modular interlocking molded rubber base and drain units

f. QUALITY ASSURANCE
i.

g. DELIVERY, STORAGE AND HANDLING
i.

h. PROJECT CONDITIONS
i. Weather Limitations: Proceed with deployment only when existing and forecasted weather conditions permit rooftop ice and snow control pathway system to be deployed according to manufacturer’s written instructions and warranty requirements.

i. WARRANTY
i. General Warranty: Special warranties specified in this Article shall not deprive Owner of other rights Owner may have under other provisions of the Contract Document, and remedies available to the Owner under prevailing local laws, and shall be in addition to, and run concurrent with, other warranties made by Contractor under requirements of the Contract Documents.

ii. Special Warranty: Manufacturer’s standard form, without monetary limitation, in which manufacturer agrees to repair or replace components of rooftop ice and snow control pathway and drain protection system that fail in material or workmanship within warranty period. Failure does not include roof leaks.

(1) Warranty Period:
A - Five (5) years from date of purchase for modular interlocking molded rubber base and drain units.
B - Two (2) years from date of purchase for electrified rubber ice and snow control mats.
C - Ten (10) years from date of purchase for electrified downspout wires.
D - Two (2) years from date of purchase for Snow and Temperature Sensor/Controller.
.

iii. Special Project Warranty: Submit electrical installer’s warranty on warranty form at end of this Section, signed by Installer, covering Work of this Section, including all electrical wiring and components for the following warranty period:

(1) Warranty Period: Two years, minimum, from date of substantial completion.

2. PRODUCTS
a. MANUFACTURERS
i. In other Part 2 articles where subparagraph titles below introduce lists, the following requirements apply for product selection:

(1) Manufacturers: Subject to compliance with requirements, provide products by the manufacturer specifies.

b. Loosely laid modular interlocking molded rubber base
i. Modular interlocking molded rubber base to be one (1) inch thick and to interlock dynamically; i.e. they shall connect one to another independent of any intermediary unit or devise and that the connection shall be accomplished such that the units shall be joined in such a manner that they shall not be able to be dislodged with normal forces in any direction; i.e. neither northward, southward, eastward, westward, upward and downward. Product to be equal in performance levels to Dundee II Interlocking Matting – Solid Top version for use over main roof area, Product Number 7511-201-2020, and Large Hole Version for use over drains, Product Number 7511-101-2020 by The Mat King.

(1) Manufacturer:
A – Geoffrey Drew Marketing, Inc. d/b/a The Mat King
740 West End Avenue; Suite 1
New York, NY 10025
(800)442-6544
Fax (800)628-7329
www.thematking.com

(2) Thickness: One (1) inch
(3) Color: Black with optional Yellow beveled safety edging to be deployed on perimeter of pathways to identify protected area at option of Owner.
c. Electrified rubber ice and snow control mats
i. Rubber encapsulated electrical ice and snow melting mats to be permanently wired into controller monitored system. Product to be equal in performance levels to Ice and Snow Control Mats, Product Number 2220-601-2406 et al, by The Mat King.

(1) Manufacturer:
A – Geoffrey Drew Marketing, Inc. d/b/a The Mat King
740 West End Avenue; Suite 1
New York, NY 10025
(800)442-6544
Fax (800)628-7329
www.thematking.com

d. Electrified Downspout Cables
i. Nexans TXLP Snow and Ice Melting cable.

(1) Manufacturer:
A – Nexans

e. Snow and Temperature Sensor/Controller
i. Model CIT-1 Sensor and Model APS-3B Snow and Ice Melting Control

(1) Manufacturer:
A – Environmental Technology, Inc.

f. Auxiliary Materials:
i. Optional geotextile mesh matting to place under modular interlocking molded rubber base material in situations where roof material is of a soft nature such as tarpaper.

3. EXECUTION
a. EXAMINATION
i. Obtain written confirmation from installer of roofing materials that the roof is ready and able to receive the rooftop ice and snow pathway system.
ii. Visually inspect roof, downspout drains and locations where electrical wiring, junction boxes and controller will be mounted to determine readiness.

b. PREPARATION
i. Remove any stray materials or debris that might cause the pathways to be deployed improperly and which might cause damage to the roof were the weight of the pathway materials and users brought to bear on it.
ii. Prevent materials from entering and clogging roof drains. Remove temporary roof drain protection materials when no work is taking place and / or when rain is forecast.

c. LOOSELY LAID MODULAR INTERLOCKING MOLDED RUBBER BASE INSTALLATION
i. Join interlocking units per manufacturer's instruction. Take measures to protect roof while deploying pathway and drain protection system. Interlock large holed verision of modular interlocking units over drains while incorporating them into the overall deployment of that product.

d. ELECTRIFIED RUBBER ICE AND SNOW CONTROL MATS INSTALLATION
i. Install according to manufacturer’s instructions. Use heavy duty tie wraps laced through factory installed grommets and any additional grommets as may be required based on local conditions and using manufacture’s guidelines, threading tie wraps through appropriately sized holes to be drilled or punched in appropriate locations in the interlocking molded rubber base.

e. ELECTRIFIED DOWNSPOUT CABLES INSTALLATION
i. Install according to manufacturer’s instructions.

f. ELECTRICAL SUPPLY PANEL AND WIRING INSTALLATION
i. Install according to manufacture’s guidelines and instructions and in compliance with NEC standards.

g. SNOW AND TEMPERATURE SENSOR/CONTROLLER INSTALLATION
i. Install according to manufacturer’s instructions.

h. FIELD QUALITY CONTROL
i. Final Inspection of Rooftop Ice and Snow Control Pathway and Drain Protection System: Arrange for meeting of Architect and Owner to demonstrate physical and electrical integrity and functionality of rooftop ice and snow control pathway system.

END OF SECTION 07535

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THE MAT KING
740 West End Avenue; Suite 1
New York, NY 10025 USA

Phone: (646)998-4208
Fax: (646)998-4073
Phone: 800-442-6544
Fax: 800-Mats-Fax (628-7329)
Phone: 800-442-6544
Fax: 800-Mats-Fax (628-7329)