babcockdavis Personnel Series User manual

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©2022 Babcock-Davis
1/2022
NOA: 21-1201.02
Personnel Roof Hatch
Model(s): Personnel Series
GENERAL DESCRIPTION
Installation,Operation
+MaintenanceManual
Introduction + Safety
Roof Hatch products provide safe and convenient access to roof
areas using interior ladders, alternating tread device and stairs.
Roof hatches are designed and built for years of safe, convenient
access to roof top areas on commercial buildings.
The following are general instructions for installing, operating and
maintaining Personnel Roof Hatches.
Please read the complete instructions carefully before beginning any work. To ensure proper
installation and performance of the roof hatch the following actions must be completed by the
installing contractor. Failure to do so will affect product warranty.
Transportation + Storage
oInspect all shipments and materials for missing or damaged components and hardware.
oMaterial must be stored in a clean, dry location.
INSTALLATION
Roof hatches are intended for commercial building applications. Because condensation may occur as a
natural result of humidity levels and temperature variations between indoor and outdoor temperatures,
residential type applications are not recommended.
The exterior of the roof hatch will have a label with an
arrow that says EXIT THIS SIDE. The arrow will point to the
intended location of the top of the ladder, ship stair,
alternating tread, or service stair.
GENERAL SAFETY PRECAUTIONS Improper selection, installation, or use can cause personal injury or property damage. It
is solely the responsibility of the user, through its own analysis to select products suitable for their specific application
requirements, ensure they are properly maintained, and limit their use to its intended purpose. Follow proper local,
state and federal regulations for proper installation and operation requirements.

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©2022 Babcock-Davis
1/2022
Installation, Operation & Maintenance
Personnel Roof H
atch
Roof hatch products may be installed on a flat or sloping roof with up to a 7:12 pitch. When installed on a
slope, the hinge side should run parallel with the slope.
TYPICAL INSTALLATION
1. Place the roof hatch over the existing opening in the roof. The roof rough opening dimensions are
equal to hatch dimensions as measured from the inside curb to inside curb. For example, a 36 inch by
30-inch fixed ladder access hatch will have a rough opening of 36 inches by 30 inches.
2. The roof hatch curb flange comes with two (2) types of mounting holes to accommodate multiple
fastening methods practiced and accepted at a local level.
a. Mark the pre-drilled 5/8-inch diameter holes from the mounting flange through the roof deck or
a concrete curb. Drill roof deck or concrete curb for installation of anchors or other fasteners
(provided by others). Bolt or otherwise fasten roof hatch curb flange to roof deck using 3/8 inch
or 1/2-inch bolts with washers.
b. Mark the pre-drilled 3/16-inch diameter holes from the mounting flange through to the roof
deck, typically into a built-up wood frame curb. Fasten roof hatch curb flange to framing using
roofing nailers and/or screws, recommended size #10.
3. Mark the pre-drilled 5/8-inch diameter holes from the mounting flange through to the roof deck or a
concrete curb. Drill roof deck or concrete curb for installation of anchors or other fasteners, provided
by others. Bolt or otherwise fasten roof hatch curb flange to roof deck using 3/8-inch or 1/2-inch bolts
with washers.
4. Install roofing material up to and surrounding the roof curb, and under the
counterflashing at the top of the curb. Use the EZ tab feature, figure 1, to provide
additional mechanical support to hold and secure roofing membrane. Lap and seal all
joints in roofing material to provide a weather-tight seal.
Figure 1

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©2022 Babcock-Davis
1/2022
Installation, Operation & Maintenance
Personnel Roof H
atch
Figure 2
MIAMI-DADE INSTALLATION
1. Place the roof hatch over the existing opening in the roof. The roof rough opening dimensions are
equal to hatch dimensions as measured from the inside curb to inside curb. For example, a 36 inch by
30-inch fixed ladder access hatch will have a rough opening of 36 inches by 30 inches.
2. The roof hatch curb flange comes with two (2) types of mounting holes to accommodate multiple
fastening methods practiced and accepted at a local level.
a. Mark the pre-drilled diameter holes from the
mounting flange through the roof deck or a concrete
curb. Reference table below for hardware and
placement. Drill for installation of anchors or other
fasteners (provided by others). Bolt or otherwise
fasten roof hatch curb flange to roof deck, figure 2.
Curb Type
Fasteners
Wood, figure 2a
Wood S.G. = 0.55 min
o3/8-inch diameter 316 lag bolts (Fy=65ksi)
oSouthern Pine (G=0.55 min), predrill as recommended
oPenetration = 1-3/4-inch min of 1-1/2 inch of threads
to be engaged into wood
oSpacing: 3 inches
oEdge Distance: 1-1/2-inch min
o End Distance: 6-inch min
Steel, figure 2b
Fy = 33Ksi: min
Thickness = 0.105-inch min
o5/16-inch diameter stainless steel fasteners min.
oSelf-drilling, self-tapping or thru bolts
o300 series stainless steel, cond. CW, Fy65ksi
o 0.105 thread engagement min.
Concrete, figure 2c
3000 psi min
o3/8-inch diameter stainless steel Kwik bolt TZ wedge
anchor 316 stainless steel
oEff. Embedment depth: 2-inch min
oInstall Depth: 2.313 min
o Edge Distance: 6-inch min
o Spacing: 4-1/2-inch min
oMin. Slab Thickness: 4 inch – normal wt.
oCracked concrete compressive strength: f’c = 300psi
**Install per manufacturer’s instructions**

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©2022 Babcock-Davis
1/2022
Installation, Operation & Maintenance
Personnel Roof H
atch
3. Install roofing material up to and surrounding the roof curb, and under the
counterflashing at the top of the curb. Use the EZ tab feature, figure 3, to provide
additional mechanical support to hold and secure roofing membrane. Lap and seal
all joints in roofing material to provide a weather-tight seal.
CURB MOUNT INSTALLATION
Prepare the curb using standard acceptable weatherproofing methods (i.e. butyl tape,
sealant, etc.). Place the roof hatch on the curb. Fasten the Roof Hatch to the curb
using pan-head fasteners that will penetrate the curb a minimum of 3/4 inch. Install
fasteners every 16 inches along the sides and ends of the Roof Hatch.
OPERATION
Roof hatches are designed and built for years of dependable roof access. To meet the demands
of an exterior application, the doors are manufactured from steel or aluminum. The curb and
cover are insulated and have a continuous extruded thermal EPDM gasket that creates a
weather resistant seal. The standard curb comes with a counterflashing incorporating EZ tabs to
assist with mechanically securing roofing material/membrane. The steel roof hatch comes
standard with a finished baked on powder coat paint that offers the best corrosion protection in
the industry. Do not leave roof hatch open, doing so could result in damage.
Figure 3
Figure 2a
Figure 2b
Figure 2c

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©2022 Babcock-Davis
1/2022
Installation, Operation & Maintenance
Personnel Roof H
atch
Single Point Latch (figure 4)
Open
1. Rotate the slam latch handle  to unlatch.
2. Push yellow handle  to fully open hatch cover until hold open arm locks.
Close
1. Pull red grip hold open arm handle  forward to disengage. (DO NOT USE
RED HANDLE TO PULL ROOF HATCH SHUT)
2. Descend the ladder, grab the yellow handle  to slam the hatch closed.
3. Lock using a padlock hasp, if required.
Point Latch (figure 5)
Open
1. Rotate the slam latch handle  to unlatch.
2. Push handle  to fully open hatch cover until hold open arm locks.
Close
1. Pull red grip hold open arm handle  forward to disengage.
2. Descend the ladder, grab the handle  to slam the hatch closed.
3. Lock using a padlock hasp, if required.
Note: Larger hatches, especially over 72 inches in length, may need two people to ensure proper closure.
MAINTENANCE
oRoof hatches should be manually operated once per year to check performance.
oLubricate moving parts such as hinges and latches with a silicone spray lube as required to
maintain a smooth opening and closing of the door. Do not use regular lubricating oil as it
can attract dust and grit.
oNon-moving parts can be cleaned with a mild soap or dishwashing detergent and water
solution.
oGaskets can be cleaned with a clean, damp, lint-free cloth. Do not apply mineral oils, vinyl
dressings, or other lubricants to the gasket as they can cause the gasket to break down over
time.
QUESTIONS?
For more information on installation, repair, or replacement, please visit
www.BabcockDavis.com or call 888.412.3726.
Figure 4
Figure 5