20 YEAR MAX
GUARANTEE
PENETRATION
M-BOND ADHESIVE
ROOF DECK
ROUND PENETRATION - POWER TOOL
CLEAN METAL SURFACE
BASE LAYER OF MAJORSEAL TM LIQUID
FLASHING
PENETRATION GAP
DETAIL
TOPCOAT R FLASHING FABRIC WRAPPED
AROUND METAL PENETRATION WITH 2"
MIN. OVERLAP.
2" MIN.
6" MIN.
FILL GAP AT BASE WITH M-BOND
ADHESIVE PRIOR TO FIRST COAT OF
MAJORSEALTM SEE PENETRATION GAP
DETAIL ABOVE.
GAF SBS MODIFIED BITUMEN OR BUILT-UP
GRANULE SHEET.
DETAIL #1
MAJORSEALTM BASE LAYER EXTEND OUT
IN FIELD TO ACCOMMODATE FABRIC
COLLAR IN DETAIL #2
EXTEND TOP LAYER OF MAJORSEAL TM
2" MIN. BEYOND TOPCOAT R
FLASHING FABRIC IN ALL
DIRECTIONS
2" MIN.
GAF SBS MODIFIED BITUMEN OR BUILT-UP
GRANULE SHEET.
2"MIN.
DETAIL #2
SURFACE GRANULES APPLIED TO
TM
TOP LAYER OF MAJORSEAL
TOPCOAT R FLASHING FABRIC COLLAR
CUT SNUG FIT AROUND PENETRATION
WITH 1 4" MIN. VERTICAL UP TURN.
NOTE:
TM
1. FOR PVC PIPE PENETRATION, CLEAN AND PRIME WITH TPO PRIMER PRIOR TO INSTALLING MAJORSEAL
2. PENETRATION GAPS GREATER THAN 1 4" REQUIRE BACKER ROD BEFORE APPLICATION OF M-BOND ADHESIVE.
3. FOR CLUSTERS OF PIPES, LEAVE 12" MINIMUM BETWEEN PIPES.
DRAWING #
R
TM
MAJORSEAL
LIQUID FLASHING
1 Campus Drive.
Parsippany, NJ 07054
ROOF
PENETRATION
SERIES
PIPE PENETRATION FLASHING DETAIL
SYSTEM
511
MM
SCALE
ISSUE/ REVISION DATE
N.T.S.
1-1-16