Mueller CF User Manual
CF PANEL
MANUAL
METAL
ROOFING
INSTALLATION
GUIDE
TABLE OF CONTENTS
Preparation Requirements and Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Care and Handling of Mueller Sheet Metal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Storage & Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Standard Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Standard Fastener Locations at Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Recommended Screw Placement Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Oil Canning Reduction Trim Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Detail Locator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Beginning the Project
Standard Eave Trim Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Standard Eave Trim Installation with Gutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Standard Adjustable Gable & Strip Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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Starting and Ending Panel Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
High Side Residential Eave Trim Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Valley Panel and Trim Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Standard Ridge Roll and Hip Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Endwall to Roof Flashing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Sidewall Flashing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Roof Pitch Change Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Standard Panel Endlap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Chimney Flashing - Uphill and Downhill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Chimney Flashing - Side and Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
PREPARATION REQUIREMENTS & RECOMMENDATIONS
his detail & installation manual has been provided to serve as a basic guideline for installing the Mueller CF panel roof system.
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This manual should be used in conjunction with the erection drawings to help ensure proper installation of this roof system.
In case of discrepancies, the erection drawings will govern over this installation guide.
It is the customer’s responsibility to ensure that a competent and experienced erection crew is chosen for the installation of
this roof system. It is also the customer’s responsibility to ensure the erection crew understands and follows this installation
manual and the erection drawings.
Mueller, Inc. is not responsible for any problems or defects caused by improper erection techniques. Any questions in
regards to clarifying the intent of this manual or the erection drawings should be directed to Mueller’s customer service
department at the address and phone number shown on the back cover.
Warning: CF Panels should not be installed on a roof that is less than a 3:12 pitch. When this panel is
installed on pitches less than 3:12, heavy rainfall may lead to water accumulation and possible leaks.
Note: It is important that the roof be properly prepared before installation begins.
Decking
Mueller, Inc. recommends our metal roofing systems be installed over CDX plywood wooden roof decking with a minimum
thickness of 15/32”. Note: If using treated lumber, special corrosive resistant screws are required. Ask your sales
representative for more information.
Stripping
The removal of existing roofing and the associated fasteners is generally necessary. This does not damage, and typically
improves, the structural capacity of wood decks. During removal, many shingle fasteners may remain embedded in the deck.
These fasteners can be pulled out or hammered flush with the deck.
Repairs
Deteriorated areas should be removed and replaced with material to closely match the existing thickness. The deck should
be sound and smooth, with fasteners flush with the surface, prior to the installation of the metal roof. New wood decking,
whether boards, planks, CDX plywood, or equal, should be the same thickness and have similar strength characteristics
and span ratings to that of the area being replaced. Deck fasteners that have backed out should have a new fastener installed
adjacent to it and the existing fastener should be removed. Loose or lifted boards, planks, plywood, and corners should
have additional fasteners installed to secure the existing deck in place.
Holes in wood decks that are 10" wide or less can be covered with 20-gauge steel. This steel plate should be galvanized
and must overlap the wood roof deck 4 inches minimum and be secured with fasteners 4 inches on center.
Fascia boards should be straight, level and in good condition. Any rotted or deteriorated boards should be replaced. All roof
framing and decking abnormalities will be transferred to the new metal roof if not corrected before sheeting begins.
Underlayment
New underlayment must be immediately installed over prepared roof decking. Mueller recommends Titanium or a minimum
30# felt. This underlayment should be installed with a minimum of a 2" side lap and a 6" end lap. Underlayment temporarily
protects the roof decking against water penetration. It should be installed using galvanized tin caps (not plastic caps). The
underlayment should be fastened to the deck with galvanized roofing nails with tin caps 12" on center in the field and 6" on
center at the sidelaps.
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Flashing
Re-roofing projects incorporate metal flashing and metal counter-flashing. Some counter-flashing are embedded, such as
a masonry wall, or are installed behind existing siding. This metal, if not deteriorated, may be reused. The existing metal
can be cut, leaving approximately a minimum of 2" of flashing exposed, and new counter-flashing can be fastened to the
backside of the existing metal. Counter-flashing must be slightly higher than the top of the rib on the sheets to be installed.
SAFETY CONSIDERATIONS
s with all major construction projects, safety should be a primary concern. The erector or contractor should be sure
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hat all OSHA safety rules are followed and that job safety is strictly adhered to.
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The following safety equipment is highly recommended when installing metal roofing:
1. Safety rope and harness
2. Hand protection
3. Eye protection
4. Hearing protection
5. Soft rubber soled shoes
Metal roofing presents several specific safety issues:
1. Metal roofing is extremely slick and does not provide firm footing. Extreme care should be taken when:
A. Working on roofs with very steep pitches.
B. Working on roofs when moisture is present.
C. Working on roofs when high wind is a factor.
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D. Working with long panels.
2. Metal edges are very sharp and should be handled with care.
3. Care should be used when lifting panels due to their weight.
4. Always check for overhead electrical lines and exercise care not to have metal sheets come in contact with them.
5. All electrical tools should be inspected regularly for damaged cases or frayed electric cords. Extension cords should
be inspected for damaged or frayed insulation. Tools which do not meet good safety standards should not be used.
CAUTION: Care should be taken when cutting sheets. Eye and hearing protection are important.
Panels may be slick!
Because of the demands of the manufacturing process, oil has been applied to the coil stock to protect the coil, as well as
the finished panel during manufacturing, shipping and storage. Metal panels must be wiped clean prior to panel installation.
NOTE: Always wear rubber soled work boots. When on the roof, use OSHA approved protection devices such as safety lines,
safety nets or catch platforms.
Unsecured Panels May Slip If Stepped On!
Never step on a single unsecured roof panel, or a stack of roof panels laying unattached on the roof. Secure each end of
the panel with clamps or appropriate fasteners and place walkboards of adequate size and strength in the flat of any
panels not fully secured to the roof and supported by panels on each side. Walkboards should run the full length of the
panel and be fastened together by drilling a hole near the end of each board and tied with rope to the next board. Cut a
groove in the bottom of each board so the board will lie flat and not tip back and forth because of the rope.
CARE AND HANDLING OF MUELLER SHEET METAL
elivery: Mueller takes every precaution to ensure that material is delivered to the customer damage-free and fully protected from
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the elements during shipment. When the material is delivered to the customer it then becomes the customer’s responsibility to
protect the material from the elements, possible theft, and other damage. The following guidelines are recommended:
HANDLING: Proper care is required in unloading and handling panel bundles in order to prevent damage.
1. Bundles should remain banded (if possible) during the unloading process. Bundles should never be lifted by the
banding material.
2. Lift each bundle as close as possible to its center of gravity.
3. If the bundles are to be lifted with a crane, use a spreader bar of appropriate length and nylon band slings (do not
use wire rope slings as they will damage the material).
4. Depending on the panel length, some bundles may be lifted by a forklift. When using a forklift, the forks should be
spread to their maximum spacing, and the load centered on the forks. Sheets over 25' long require two forklifts.
5. After panel bundles are opened, individual sheets must be handled carefully to prevent panel buckling or damage to
the panel coating. When removing a sheet from a bundle it should be rolled off the bundle to prevent scratching of
the next sheet. Never drag or slide one sheet over another sheet. Sheets should not be picked up by the ends. Instead,
lift the sheet along its longitudinal edge and carry in a vertical position. For sheets over 10' long, two or more people
may be required to carry the sheet.
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Wall and Roof Panels
Mueller’s wall and roof panels, including color coated, galvalume and galvanized, provide excellent service under widely
varied conditions. All unloading and erection personnel should fully understand that these panels are quality merchandise
which merit cautious care in handling.
Under no circumstances should panels be handled roughly. Packages of sheets should be lifted off the truck with extreme
care taken to ensure that no damage occurs to ends of the sheets or to side ribs. The packages should be stored off the
ground sufficiently high to allow air circulation underneath the packages. This avoids ground moisture and deters people
from walking on the packages. One end of the package should always be elevated to encourage drainage in case of rain.
All stacked metal panels are subject, to some degree, to localized discoloration or stain when water is trapped between their
closely nested surfaces. Mueller, Inc. exercises extreme caution during fabrication and shipping operations to ensure that
all panel stock is kept dry. However, due to climatic conditions, water formed by condensation of humid air can become
trapped between stacked sheets. Water can also be trapped between the stacked sheets when exposed to rain. This
discoloration caused by trapped moisture is often called “wet storage stain.”
The stain is usually superficial and has little effect on the appearance or service life of the panels as long as it is not
permitted to remain on the panels. However, moisture in contact with the surface of the panels over an extended
period can severely attack the finish and reduce the effective service life. Therefore, it is imperative that all panels be
inspected for moisture upon receipt of the order. If moisture is present, dry the panels at once and store in a dry,
warm place.
STORAGE
Storage: I
nd out of the elements if at all possible. If sheets are to
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e stored outside, the following precautions should be
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observed:
1. The storage area should be reasonably level, and
2. When stored on bare ground, place plastic ground
3. Store bundles at least 12 inches above ground level
4. Elevate one end of each bundle slightly to permit
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5. Inspect stored bundles daily and repair any tears
t is recommended that sheets be kept covered
located so as to minimize handling.
cover under the bundles to minimize condensation
on the sheets from ground moisture.
to allow air circulation beneath the bundle, and to
prevent damage from rising water.
runoff of moisture from the top of the bundle or
from between sheets. A waterproof cover should be
placed loosely over the bundles to allow for air
circulation under the cover.
or punctures in the waterproof cover.
Checking order at time of delivery:
heck each order carefully, as it is unloaded. Report any
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bvious damage or shortages to the carrier immediately. If
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damage or shortages are noted after delivery (at time of
unpacking) notify your Mueller representative immediate-
ly. Have invoice numbers and detailed descriptions of the
damage or shortage available. These procedures are for
your protection. A shortage or damage discovered later
can be caused by theft, misplacement, mishandling or
other causes and is not the responsibility of Mueller, Inc.
Underlayment: The underlayment should be one layer
of Titanium or 30# felt. The Titanium should have a 2"
side lap and a 6” end lap. The underlayment should be
fastened to the deck with galvanized roofing nails
with tin caps 12" on center in the field and 6" on
center at the sidelaps.
6. Re-cover opened bundles at the end of each work
day to prevent subsequent moisture damage.
Never Install Material if the Quality is in Question!
TOOLS REQUIRED
The following list of tools is recommended when installing metal roofing:
1. Aviation snips - left, right, straight 6. Square 11. Broom 16. Fire extinguisher
2. Screw gun 2500 RPM with appropriate nut drivers 7. Straight edge 12. Extension cords 17. Saw horses
3. Tape measure 8. Chalk line 13. Ladder 18. First aid kit
4. Caulking gun 9. Vise grips 14. Hammer 19. Tarp
5. Safety equipment: goggles, hard hat, 10. Gloves 15. Drill bits 20. Electric shear or nibbler
and soft rubber soled shoes
CAUTION: Whenever using any type of power equipment, it is important to follow the manufacturer’s recommendation
for use. Always be aware of the danger involved when using electric or air powered equipment.
STANDARD PARTS
Note: If using treated lumber, special
corrosive resistant screws are required.
Ask your sales representative for more
information.
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Details are subject to change without prior notice.
STANDARD PARTS
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STANDARD PARTS
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