MIL-HDBK-1011/1
Table 2 (Continued)
Roofing Systems and Materials
UV-
RESIS-
COST WT/
SERV. WAR-
ROOFING TYPE
RANTY
TANCE
REMARKS
RANGE 100 SF
LIFE
SHEET APPLIED
(Cont.)
Poor resistance to
Chlorinated
4-5
30 lb
5-15
10
Fair
petroleum distil-
Polyethylene
max.
lates, strong
(CPE)
oxidizers, aromatic
hydrocarbons.
Poor resistance to
Modified
3-4
130 lb
5-15
5-10
Fair
Bitumen
petroleum distil-
lates, hydrocarbons,
solvents, and some
chemicals.
Use on slopes 4:12
FIBER REIN-
3-5
400-
30-50 30-50
Good
(w/o waterproofing).
FORCED CEMENT
560 lb
(NON-ASBESTOS)
CORRUGATED
METAL
Aluminum
3-4
Good
60 lb
10
Galvanized
3-4
180 lb
10
Good
Steel
7.3.3
Design Guidelines.
Consider the following guidelines for all BUR
installations:
a) Use only glass felts.
Do not use organic felts.
b) Use Type IV asphalt.
c) Use a reflective mineral surfaced cap sheet system or a
reflective coated smooth surface system. Gravel surfacing is not recommended
for use in the tropics and it is recommended that it not be used at all near
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