BERGER Mullane 300S-NA User manual

805 PENNSYLVANIA BLVD., FEASTERVILLE, PA 19053
TF: 800.523.8852 T: 215.355.1200 F: 215.355.7738
BergerBP.com ©2013 Berger Building Products, Inc. 0913
Mullane 300S-NA Snow Guard
Bronze Guard for Slate Roofs
Installation Instructions:
A traditional half-moon style snow guard, from a design first patented in
1899, the Model #300 is historically accurate for period restorations, but is just as
appropriate for new construction. Because of its low profile, this model is also
appropriate for residential usage. Bronze for Slate Roofing (300S-NA).
The technical information is for informational purposes only and is not
intended to replace the manufacturer's recommendations for a particular project. We will
provide layout layouts free of charge upon receipt of customer provided roof measurements.
Manufacturer is not responsible for improper installation, or installation in insufficient quantities.
Every roof is not the same! Call today for a custom layout.
General Information:
Snow guards are devices that are attached to the roof structure in order to uniformly retain and hold snow in place on the roof area. The snow
guards need to be applied in sucient quantity according to a prescribed pattern in order to be eective. Snow Guards are intended to prevent snow
movement and provide for the controlled melt and breakdown of the snow mass into smaller sections.
Snow guard placement will vary from region to region and will be inuenced by roof pitch, the lengths of roof runs and roof features. Local
installation customs may not be the best guide for placement. Additional information can be found in sheet metal and air conditioning contractors’
national association (SMACNA) architectural sheet metal manual.
Berger Building Products, Inc. recommends that a qualied roong contractor be employed to install these products. Roong professionals have
the proper equipment, knowledge and ability to complete the task in a safe and satisfactory manner. The applicator is responsible for compliance with
regulations governing local building ordinances and safety regulations.
Safety Hazards
• Roong can be hazardous! Serious injury or fatality can result from falls or electrocution from contacting overhead wires. Observe ladder
safety rules for load, positioning and security.
• Please make sure all roof surfaces are dry and clean before working. Avoid working in excessive heat, high wind or when there is a threat
of lightning. Never work alone.
• Do not allow material to be unsecured on the roof. Falling objects are dangerous.
• Prior to application, Berger Building Products, Inc. requires that the installer evaluate all products in order to determine tness for use.
Do not use Competing/Dissimilar Metals with each other!
Galvanic corrosion will occur when dissimilar metals are in contact in the presence of an electrolyte. Water in the form ofcondensation, rain or
snow is an electrolyte. Water that ows over copper becomes electronegative and will cause corrosion of aluminum or steel. Copper, brass or stainless
steel fasteners or nails must be used with copper or brass applications. Make sure rivets are solid copper; do not use copper plated steel rivets in copper
or brass assembly. Do not use aluminum or galvanized nails to secure any copper products. Corrosion will be more rapid in the presence of salts such
as ocean coastal areas or chlorinated water, acid rain, and polluted industrial atmospheres. Accelerated corrosion will occur when a larger area of an
electronegative (cathode/protected) element contacts a small electropositive (anodic/corroded) element.
Warranty/Disclaimer
Berger Building Products, Inc. (BBPI) warrants that the products it manufactures shall be free from material defects. Should any of the products
prove defective, the obligation of BBPI under this warranty shall be limited to replacement of the defective product or at our option the cost of the
product originally shipped by Berger. This warranty is expressly in lieu of all other warranties expressed or implied including the warranties of
merchantability and tness for a particular purpose. There are no warranties, which extend beyond the description on the face hereof. BBPI in no event,
whether claim is based on warranties, contract negligence or otherwise, is liable for incidental or consequential damages.
Berger Building Products, Inc (BBPI) will not be responsible for misapplication or modication of product, incorrect material or defects that were
obvious at time of installation. Any consequential damage, schedule delays, additional labor, and or equipment rental costs will not be BBPI
responsibility. Any BBPI product warranty claim is limited solely to Berger Building Products, Inc.
Berger Building Products, Inc. (BBPI) reserves the right to change design and specication of our products without prior notication or alteration of
literature. Materials may be revised to improve strength and corrosion properties and incorporated as a running change without obsolescence.
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805 PENNSYLVANIA BLVD., FEASTERVILLE, PA 19053
TF: 800.523.8852 T: 215.355.1200 F: 215.355.7738
BergerBP.com ©2013 Berger Building Products, Inc. 0913
The 300S-NA
Snow Guard
slate
Installation of the Mullane 300S-NA Snow Guard on Slate or Synthetic Slate:
(side view) (top view)
slate
300S-NA
Snow Guard
Nail
300S-NA
3” 3”
exposure
head lap
300S-NA Snow Guard Layout for Slate or
Synthetic Slate Roofs:
Every guard will not fit every roofing application. It is important to
know the size and thickness of your slate or synthetic slate prior to
selecting a snow guard.
Vertical spacing will be dictated by the slate's exposure. All
measurements listed below are approximations.
1. The first row shall be installed no lower than two (2) feet from
the edge of the roof and spaced 24" to 30" apart in the rows.
2. Rows one through three to and three shall be spaced 24" to 30"
horizontally and the guards offset 15" to 18" from the course
below.
3. Rows four through six shall be placed 36" to 48"
horizontally and the guards offset 18" to 24" from the course
below. Start this course 30" to 36" up from row three.
4. Mullane products can be custom sized at an additional cost to
meet the specific needs of your project.
5. Snow guards should never be placed beyond the bearing wall
on an extended roof section. This can result in ice damming
and cause structural damage.
6. The number of rows will be dictated by size of the roof and
climate of the location.
7. Improperly insulated roofs will require more snow guards.
8. Every roof is different, call today for your free layout
recommendation.
The patterns shown are typical for a rafter run of no more than 25 feet in an area with a ground snow load no more than 30 psf. If your
project exceeds this criteria, contact Berger for a free consultation.
SLATE
ROOF
Bottom 3 rows:
Offset guards
15” to 18”
from course below
24” to 30”
24” to 30”
8 to 10 ft. between
ridge and top row
30” to 36”
36” to 48”
30” to 36”
36” to 48”
Top 3 rows:
Offset guards
18” to 24”
from course
below
24” to 30”
24” to 30”
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805 PENNSYLVANIA BLVD., FEASTERVILLE, PA 19053
TF: 800.523.8852 T: 215.355.1200 F: 215.355.7738
BergerBP.com ©2013 Berger Building Products, Inc. 0913
Gap between Snow Guard face and edge of tile should be
approximately three times the thickness (T X 3) of tile or
with a minimum 5/8” clearance when used with a 1/4”
thick or thinner material.
(side view)
slate
300S-NA
Snow Guard
Gap
Positioning of the Mullane 300S-NA Snow Guard Assembly on Slate Roofs:
300S-NA
Snow Guard
Holes for
nails
Typical Snow Guard spacing on 1/4" (.025") thick slate.
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