MIL-HDBK-1001-5 Roofing And Waterproofing S/S By Mil-Std-3007This handbook sets forth guidelines for design of roofing, LAYOUT 1 and waterproofing systems for building construction. It covers design of new low-slope and steep roof systems, reroofing of existing buildings, and waterproofing, and dampproofing systems.

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MIL-HDBK-1001/SA

c)  Roof surface color has an impact on energy consumption and membrane temperature and color should be considered in the evaluation of energy and life cycle cost, and when determining the suitability of the roof membrane.

3.2.8     Location.  Roof insulation can be located either above or below the roof deck.  In low slope roof buildings, above deck insulation is preferred.

3.3       Materials.  A wide variety of insulation materials are available for use as roof insulation in buildings.  Each material usually has a unique set of properties and compatibility with other roofing components which must be properly evaluated so that the roof will perform satisfactorily.

3.3.1     Board Insulation.  This form may be either a single component material or a composite of two or more different materials.

a)  Single Component Insulation

b)  Composite Board Insulation.  In order to provide compatibility with certain types of roofing materials and also to provide the desired fire rating, composite board insulation is available, consisting of two or more pre-assembled layers of differing insulation materials.  Use of composite board

insulation often allows application criteria and thermal resistance criteria to be met with minimum insulation thickness.

3.3.2     Insulating Concrete.  Several types of lightweight insulating concrete are available for roof insulation purposes. They are typically installed over ventilated roof decks or formboard on low slope roofs, since it is possible to slope the concrete in order to provide roof drainage.  The concrete must be able to exhaust original mixing water to the interior space.

Also, refer to Section 2.

3.3.3     Sprayed Plastic Foam.  Sprayed-in-place plastic polyurethane foam insulation is available for roof insulation. Refer to Section 7.

3.3.4     Properties.  Physical property data are usually available from the insulation manufacturer and often consist of testing laboratory reports.  Care should be taken that the data reported are appropriate for the conditions under which the roof will perform.  Physical property data are also published in the

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