The University of Colorado Colorado Springs is requesting RFP bids for a reroof project for the original Summit Village housing complex. This complex consists of eight buildings; Aspen House, Breckenridge House, Keystone House, Monarch House, Steamboat House, Telluride House, Vail House and The Lodge.
Work can start Saturday, December 19, 2015 and is to be substantially complete by January 18, 2016. The residences are not occupied during this academic break and work can occur 7 days/week starting at 7am. Work to conclude no later than is safe based on light available.
This reroof project is to go over the top of the existing roofing material saving the cost of labor to remove the existing roof and the associated disposal costs, along with the cost to replace insulation, etc. The existing roof is a built-up roof. There was a layer of sand originally that has mostly been blown away or into corners.
Colorado Springs is located in a Special Wind Region per ASCE 7-98/ASCE 7-02 Wind Map.
The warranty for the roof shall cover winds up to 100MPH and hail in a no dollar limit manufacturer warranty. The warranty will be in effect for a minimum of 15 years from substantial completioninspection. The warranty is to cover the labor to make necessary repairs or replacement of the defective portion of the membrane or workmanship of the contractor.
Definitions:
Roofing Terminology: Refer to ASTM D1079 for definition of terms related to roofing work not otherwise defined in the section.
Reference Standards:
ASTM C177 - Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission
Properties by Means of the Guarded-Hot-Plate Apparatus.
B. ASTM C209 - Standard Test Methods for Cellulosic Fiber Insulating Board.
C. ASTM C518 - Standard Test Method for Steady-State Thermal Transmission Properties by Means of the
Heat Flow Meter Apparatus.
D. ASTM C728 - Standard Specification for Perlite Thermal Insulation Board.
E. ASTM C1289 - Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board.
F. ASTM D638 - Standard Test Method for Tensile Properties of Plastics.
G. ASTM D1004 - Standard Test Method for Tear Resistance (Graves Tear) of Plastic Film and Sheeting.
H. ASTM D1079 - Standard Terminology Relating to Roofing and Waterproofing.
I. ASTM D1621 - Standard Test Method for Compressive Properties Of Rigid Cellular Plastics.
J. ASTM D1622 - Standard Test Method for Apparent Density of Rigid Cellular Plastics.
K. ASTM D3273 - Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber.
L. ASTM D6878/D6878M - Standard Specification for Thermoplastic Polyolefin Based Sheet Roofing.
M. CAN-ULC-S770 - Standard Test Method Determination of L-Term Thermal Resistance Of Closed-Cell
Thermal Insulating Foams.
N. FM DS 1-28 - Wind Design; Factory Mutual System.
O. FM DS 1-29 - Roof Deck Securement and Above-Deck Roof Components; Factory Mutual System.
P. SPRI ES-1 - Wind Design Standard for Edge Systems Used with Low Slope Roofing Systems. (ANSI/SPRI
ES-1)
Administrative Requirements:
Pre-Installation Conference: Before start of roofing work, Contractor shall hold a meeting to discuss the
proper installation of materials and requirements to achieve the warranty.
Convene under general provisions of Section 01 7000.
Require attendance with all parties directly influencing the quality of roofing work or affected by the
performance of roofing work.
Submittals:
Material and constructability submittals are to be submitted to the Executive Director Auxiliary Operations
Product Data:
Provide membrane manufacturer's printed data sufficient to show that all components of roofing
system, including insulation and fasteners, comply with the specified requirements and with the
membrane manufacturer's requirements and recommendations for the system type specified; include
data for each product used in conjunction with roofing membrane.
Where UL or FM requirements are specified, provide documentation that shows that the roofing
system to be installed is UL-Classified or FM-approved, as applicable; include data itemizing the components of the classified or approved system.
Installation Instructions: Provide manufacturer's instructions to installer, marked up to show exactly how all components will be installed; where instructions allow installation options, clearly indicate which option will be used
Samples:
Submit samples of the roof membrane, fasteners & walkway pads
Shop Drawings:
The roof membrane manufacturer's standard details customized for this project for all relevant
conditions, including flashings, base tie-ins, roof edges, terminations, expansion joints, penetrations,
and drains.
Installer Qualifications;
Letter from manufacturer attesting to the roofing installer meets specified qualifications.
Quality Assurance:
Roofing Installer shall have the following;
Current approval, license, or authorization as applicator by the manufacturer.
Fully staffed office within 100 miles of the job site.
At least five years experience in installing specified system
Basis of Design:
Basis of Design: Specifications are based on roofing systems by specified basis of design manufacturer
and product(s). Roofing systems manufactured by other acceptable manufacturers are permitted, subject to compliance with specified requirements; and provided that deviations in design, weight, performance, and profile are minor, and do not detract substantially from the indicated design intent.
Delivery & Storage:
Deliver products in manufacturer's original containers, dry and undamaged, with seals and labels intact and legible.
Store materials clear of ground and moisture with weather protective covering.
Keep combustible materials away from ignition sources.
Warranty:
Limit of Liability: No dollar limitation.
Scope of Coverage: Repair leaks in the roofing system caused by:
a. Ordinary wear and tear of the elements.
b. Manufacturing defect in materials.
c. Defective workmanship used to install these materials.
d. Damage due to winds up to 100 mph.
e. Hail up to 2 inches in diameter.
Not Covered:
a. Damage due to winds in excess of 100 mph.
b. Damage due hurricanes or tornadoes.
c. Intentional damage.
d. Unintentional damage due to normal rooftop inspections, maintenance, or service
Products:
Basis of Design:
Dura-Last EV 50 MIL Membrane
Duro-Last Roofing, 525 Morley Dr, Saginaw, MI 48601,800-248-0280
Roofing systems manufactured by others are acceptable provided the roofing system is completely equivalent in materials and warranty conditions and the manufacturer meets the following qualifications:
Specializing in manufacturing the roofing system to be provided.
Minimum ten years of experience manufacturing the roofing system to be provided.
Able to provide a no dollar limit, single source roof system warranty that is backed by corporate assets in excess of one billion dollars.
Able to provide isocyanurate insulation that is produced in their own facilities
Metal Roof Edging; same as roofing manufacturer
Metal roof edging products by other manufacturers are not acceptable.
Field- or shop-fabricated metal roof edgings are not acceptable.
Factory fabricated products by other manufacturers are acceptable provided they are completely equivalent in materials and performance.
Roofing System:
Duro-Last PVC Thermoplastic membrane conforming to ASTM D4434. Type III fabric reinforced, PVC
50mil thickness
Tan color
Membrane to be mechanically fastened, if required a slip sheet or cover board may be necessary to separate the new membrane from the existing roofing material.
Duro-last prefabricated flashings w/manufacturer’s standard reinforced PCC membrane
Stack flashings
Curb flashings
Inside & outside corners
Membrane scuppers
Sealants & adhesives compatible with roofing system & supplied by the manufacturer
Duro-CaulkPLus
Strip Mastic
Slip sheet compatible with roofing system and supplied by manufacturer
Fasteners and plates; factory coated steel fasteners and metal or plastic plates meeting corrosion resistance provisions of FMG 4470 designed for fastening membrane and insulation to substrate, supplied by manufacturer.
Termination and edge details; termination bars supplied by manufacturer
Vinyl coated metals; 24 gauge, hot dipped galvanized, grade 90metals w/minimum 17 mil Duro-last membrane laminated to one side
Provide no-skid maintenance free walkway pads in areas of heavy foot traffic around mechanical equipment – Duro-last Roof Trak III Walkway pad
Comply with applicable local building code requirements.
Provide assembly having Underwriters Laboratories, Inc. (UL) Class A Fire Hazard Classification.
Provide assembly complying with Factory Mutual Corporation (FM) Roof Assembly Classification, FM
DS 1-28 and 1-29, and meeting minimum requirements of FM 1-90 wind uplift rating.
Roof pads are to be installed from the roof access doors to and around all roof mounted equipment.
Membrane Materials:
Membrane:
Flexible, heat weldable sheet composed of membrane conforming to ASTM D4434 and meets the following physical properties;
50 mil in thickness
Thickness over scrim 0.016 (typical value of 0.026)
Breaking strength 390 lbf and 438 lbf in accordance with ASTM D 751
Elongation at break 31% (MD)and 31% (XMD) in accordance with ASTM D751
Heat aging in accordance with ASTM D3045: 176 degree F for 56 days with no sign of cracking, chipping or crazing (In accordance with ASTM 4434)
Factory seam strength 431 lbf in accordance with ASTM 751
Tearing Strength: ≥ 132 lbf. (MD) and ≥ 163 lbf. (XMD) in accordance with ASTM D751, ProcedureB.
Low Temperature Bend (Flexibility): Pass at -40 °F in accordance with ASTM D2136.
Accelerated Weathering: No cracking, checking, crazing, erosion or chalking after 5,000hours in accordance with ASTM G 154.
Linear Dimensional Change: < 0.5% in accordance with ASTM D1204 at 176±2°F for 6hours.
Water Absorption: < 2.6% in accordance with ASTM D570 at 158°F for 166 hours.
Static Puncture Resistance: ≥ 56 lbs. in accordance with ASTM D5602.
Dynamic Puncture Resistance: ≥ 14.7 ft-lbf. in accordance with ASTM D5635.
Field Quality Control
Provide final inspection of the roofing system by a technical Representative employed by the roofing system manufacturer specifically to inspect installation for warranty purposes.
Cleaning
Clean all contaminants generated by roofing work from building and surrounding areas, including, but not limited to adhesives, sealants, and coatings.
Repair or replace building components and finished surfaces damaged or defaced due to work of this section, comply with recommendations of manufacturers of components and surfaces.
Remove leftover materials, trash, debris, and equipment from project site and surrounding areas.
Protection
Where construction traffic must continue over finished roof membrane, provide durable protection and replace or repair damaged roofing to original condition.