MIL-HDBK-1011/1
Table 2
Roofing Systems and Materials
UV-
SERV.
WAR-
RESIS-
COST WT/
REMARKS
RANGE 100 SF
RANTY TANCE
ROOFING TYPE
LIFE
BUILT-UP
Good
Most prone, because
Asphalt: Base
1-2
400 lb
5-20
10-15
of complexity, to
sheet, 2 plys,
leakage and sheet
mineral cap
moisture entrapment
in system.
FLUID-APPLIED
Acrylic
Use on slopes 1/2:12
2-3
7-20
Good
1-20
Elastomer
or greater. Do not
w/o foam
23 lb
use in areas with
w/l in. foam
47 lb
averaging 80-85
percent annually.
Recommend use of fast
setting compounds.
Polyurthane
4-5
7-20
Moisture cured ure-
1-20
Fair
Elastomer
Good
thanes-use on slopes
w/o foam
30 lb
1/4:12 or greater.
w/1 in. foam
53 lb
Catalyzed urethanes -
use on roof of any
slope. Resistance to
UV is good if top-
coated with aliphatic
urethanes.
SHEET-APPLIED
Polyvinyl
4-5
30 lb
10-20
5-10
Poor
Poor resistance
Chloride
to petroleum and
solvents.
(PVC)
Ethylene
4-5
35 lb
10-30+ 10-25
Good
Poor resistance to
Propylene
petroleum, most oils,
Diene
and plastic roof
(EPDM)
cement.
30
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