Roofing Material Specifications and Details - BITEC, Bitumen ...

C O N S T R U C T I O N D E T A I L S
The following construction
details are provided as minimum
flashing detail guidelines for use
with BITEC membranes. Specific
field conditions may necessitate
other details or modifications of
these details. BITEC does not
intend that details be limited to the
ones shown in this manual.
Interruptions in the roof membrane
are the most likely place for
leaks to occur. Membranes should
be installed in accordance with
time proven methods and details.
Ultimately, the responsibility for
the design of the actual specific
details for any given project is the
responsibility of the project de-
CONSTRUCTION DETAILS
signer, be that an architect, engineer,
consultant, owner or roof
membrane installer.
However, for projects requiring a
warranty with unusual conditions,
consult BITEC’s Technical Services
Department regarding such
conditions.
BITEC requires that good roofing
practices, such as but not limited
to those published in the
NRCA Roofing and Waterproofing
Manual, be followed with all installations.
These details have been
developed by the industry over
many years.
Failure to follow these minimum
guidelines can jeopardize perfor-
TABLE OF DETAIL DRAWINGS
1. Draining Edge with Gutter
1a Draining Edge with Gutter, alternate
2. Flat Draining Edge (Drip Edge, Gravel Stop)
2a Flat Draining Edge (Drip Edge, Gravel Stop), alternate
3. Raised Roof Edge (with Cant Edge)
4. Low Raised Edge (with Tapered Edge)
4a Low Raised Edge (with Tapered Edge), alternate
5. Low Parapet Wall
6. Parapet Wall End Termination
7. High Parapet with Multi-Ply Base Flashing
7A High Parapet Base Flashing at Plywood Walls
7B High Parapet Base Flashing at Masonry Walls
7C Multi-Ply Base Flashing at Masonry Parapets
7D Multi-Ply Base Flashing, Stone Capped Masonry Walls
7E Multi-Ply Base Flashing at EIFS Walls
8. Base Flashing for Wall Supported Deck
9. Base Flashing for Non-Wall Supported Deck
10. Base Flashing for Vented Base Sheet
11. Typical Termination Bar Counterflashing
12. Area Divider Curb
13. Curb Type Expansion Joint
32
mance of the roof system and warranty
issuance.
All edge flashing details should
be designed and installed to meet
the FMRC Loss Prevention Data
Bulletin #1-49 requirements.
However, some local code requirements
may take precedence
regarding certain design items.
Designers and contractors should
acquaint themselves with pertinent
local code requirements, which
may change from time to time.
“Alternate” details 1a, 2a & 4a
in this publication may not meet
specific wind uplift resistance
requirements, according to the
FMRC 1-49 requirements.
14. Low Profile Raised Expansion Joint
14A Low Profile Prefab Expansion Joint
15. Thru Wall Scupper
16. Scupper Thru Raised Roof Edge
17. Roof Drain Without Lead Flashing
18. Roof Drain With Lead Flashing
19. Sheet Metal Pan Roof Drain
20. Skylight, Hatch and Smoke Vent Curbs
21. Roof Top Air Handling Units
22. Insulated Steel Deck Frame Support
23. Concrete Deck Frame Support
24. Pipe Support with Roller Assembly
25. Equipment or Sign Support Rail
26. Pipe and Flashing Clearances
27. Mechanical Equipment Stand
28. Plumbing Vent Flashing
29. Approved One-Way Vents
30. Hot Stack Flashing Curb
31. Piping Thru Roof Deck
32. Typical Pitch Pan
33. Split Repair
NOTE: Lower case "a" designates an alternate detail, and upper case letters with detail numbers indicate additional similar details.
For other details, not shown, Contact BITEC’s Technical Services Department at (800) 535-8597