UFC 4-171-05
1 January 2005
with change 25 October 2006
APPenDIX K
ROOF sYsteMs FOR ARMY ReseRVe PROJeCts
K-1
General Direction
K-1.1
At the December 2001 MILCON convention, personnel from the Using
Agency, AR Installations, Design Agency, and A/E design teams met to discuss roofing
for AR facilities. The following guidance represents the consensus from the meeting,
and is to be used for roofing design until additional guidance is developed and issued.
K-1.2
There are \ four approved roofing systems for AR facilities: standing seam
metal roofing systems (SSMRS), built-up roofing (BUR) systems, membrane roofing
systems (EPDM), and fiberglass-based asphalt shingle roof systems./2/ Other systems
may be acceptable with Using Service approval.
K-2
Specific Guidelines
K-2.1
standing seam Metal Roof system (ssMRs)
K-2.1.1
Use architectural rather than structural SSMRS
K-2.1.2
Minimum slope should be 3 in 12
K-2.1.3 Require #30 felt underlayment for entire roof, and use ice and water shield in
eaves, valleys, hips and ridges
K-2.1.4 Require ice and water shield over entire roof where appropriate for the locality
of the project
K-2.1.5
Specify and show on the drawings a rigid underlayment.
K-2.1.6 The clip screws should go down through the underlayment and insulation into
the metal deck
K-2.1.7
Require crimping machine to be calibrated daily
K-2.1.8
Provide generic NRCA details to help define the quality of the roof.
K-2.1.9 \ Reference Reserve Support Team Specification Sections 07 61 13.00 48
and 07 61 14.00 48 available at the USACE Louisville District Web-Site. /2/
K-2.2
Built-Up Roof (BUR)
K-2.2.1
Use a modified bitumen 2-ply system
K-2.2.2
Require a 20 year, no-dollar-limit warranty
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