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Guarantees |
2.4 What Are the Eligible Conditions?
This manual clearly differentiates between requirements and recommendations. This manual has been written to assist the specifier to
develop a comprehensive bid package. The information is presented in an explanatory fashion rather than the authoritative, instructive manner
commonly utilized in construction specifications. When experience, technical knowledge, or established testing procedures support a policy or
position, it is clearly identified, (i.e., "JM requires" or "is not acceptable"). When the use of a particular product or practice is undesirable or
questionable, the reference is stated as an opinion rather than an absolute fact, (i.e., "JM recommends" or "JM suggests"). It is mandatory that
all requirements be complied with, however, it may not be necessary to follow all recommendations to qualify for a guarantee.
2.4.1 JM Will Not Issue Any Guarantee On Any Roof Assembly Over the Following:
A. Cold storage buildings, unless a ventilated plenum isolates the cold storage area from the roofing system and substrate.
B. Insulation other than JM Fesco Board, Tapered Fesco Board, Fesco Foam, Tapered Fesco Foam, E’NRG’Y 2, Tapered
E’NRG’Y 2, 1/2" Retro-Fit Board, Nord Board, Fiber Glass Roof Insulation, or other insulations approved, in writing, by JM.
C. An existing roof membrane without Ventsulation Felt, Fesco Board, 1/2 " Retro-Fit Board, or Fiber Glass Roof Insulation
mechanically or spot mopped attached under the new assembly.
D. Private residences.
E. Storage silos and heated tanks.
F. Structures outside the United States.
G. Conduit or piping between the roof deck and roofing membrane, unless the conduit or piping is installed in the channels of the
deck or the space between the conduits is filled with an approved insulation, so a full and uniform thickness of insulation covers the
entire deck surface and conduits.
H. A roof or any area of a roof that is not readily accessible for inspection.
I. A roof where harmful residue deposits may damage the roof membrane, such as soybean, milk or other processing plants.
J. Paper mills or other high moisture-producing process facilities that remain in operation and exhaust moisture vapor in the vicinity
of the roofing application.
2.4.2 Roof system requirements may vary from normal conditions for special roofing situations. All requests for modification to published
specifications must be submitted to a JM Technical Service Specialist for approval and acceptance in writing prior to application.
2.4.3 Before roofing over non-standard substrates or unusual shapes such as domes, etc., obtain approval from JM as to the roofing
specification and method of application to use.
2.4.4 Drainage: Design and installation of deck and/or roof substrate must result in the roof draining freely to outlets numerous enough and so
located as to remove water promptly and completely. Areas where water ponds for more than 24 hours are unacceptable and will not be
guaranteed.
2.5 Inspections
2.5.1 JM will inspect only those roof installations which are to be guaranteed and only if JM is notified that a guarantee is required, and if the
minimum current charge, or one half of the current charge, whichever is more, has been paid 14 days before the roof construction commences.
2.5.2 JM reserves the right, however, to waive inspection on guaranteed roofs when, in our opinion, inspection is not necessary or the building
site is remote from a company location. In such cases, the owner or designer may request a special inspection for which JM may charge an
additional fee. If our representative observes conditions on the job site which do not conform to the requirements for the application of a JM
guaranteed roof, the representative will point out such conditions to the roofing contractor or the architect's representative. The fact that an
owner, architect or contractor requests or specifies a guarantee is to be furnished does not obligate JM to furnish the guarantee, if all the
requirements of the guarantee are not met.
2.6 Guarantee Selection Charts:
The following charts list, in a more graphic form, the various JM roofing systems and the requirements for issuance of a particular guarantee.
There is a separate chart for each major roofing system type (BUR and Modified Bitumen). Within each major roofing system type, the chart is
further divided into groups of relative performance; i.e. Good, Better, Best.
2.6.1 The information contained in these charts is accurate at the time of printing, but JM reserves the right to change any requirements,
specifications, or guarantees at any time without prior notice. The fact that a particular guarantee is offered under a particular set of
circumstances does not obligate JM to issue that guarantee unless all conditions contained in this manual and other appropriate documents
are fulfilled.
