Installation Guide

Sources: American Wood Council, NDS 2005, Table 11.2 A, 11.3.2 A
Notes:
1) Thread must be embedded in a rafter or other structural roof member.
2) See IBC for required edge distances.
IMPORTANT: To maintain waterproong it is important that the aluminum ashing (item 1) is properly placed under one full course above the mounting block with at least some of the ash-
ing extending up under the course above that as well. See instructions on back.
Lag pull-out (withdrawal) capacities (lbs) in typical lumber:
Lag Bolt Specications
Specic Gravity 5/16" shaft per 3" thread depth 5/16" shaft per 1" thread depth
Douglas Fir, Larch .50 798 266
Douglas Fir, South .46 705 235
Engelmann Spruce, Lodgepole Pine (MSR 1650 f & higher) .46 705 235
Hem, Fir .43 636 212
Hem, Fir (North) .46 705 235
Southern Pine .55 921 307
Spruce, Pine, Fir .42 615 205
Spruce, Pine, Fir (E of 2 million psi and higher grades of MSR and MEL) .50 798 266
Classic Shake Mount QMLC
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4%/2&.&/$66,&$&$67$/0,// 
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PLEASE NOTE: Cedar shakes treated with ACQ or CCA wood preservatives or re retardant chemicals, or shakes with higher concentrations of natural
tannins, may cause accelerated corrosion when in direct contact with aluminum. It is advisable to use an appropriate physical barrier to isolate the alu-
minum from these corrosive chemicals. Accepted barriers include standard roong felt, ice & water shield type underlayment, or 10 mil thick polyethyl-
ene sheeting. Please check with your shake roofer and/or supplier to see if your shakes require these barriers.