Mueller Snap Lock (MSL) - Manual (Page 3)

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Read this manual completely prior to beginning the installation of your Mueller Snap Lock (MSL) roof system.
Mueller Incorporated details must be followed as a minimum to ensure appropriate warranties be issued. Mueller
Incorporated assumes no responsibility for any problems which might arise as a result improper installation or any
personal injury or property damage that might occur with the products use.
Mueller is providing the following installation instructions and details as a guideline, to show a knowledgeable,
trained erector, parts placement one to another. All local building codes in project specifications should be followed,
however, in all cases, good roofing practices, and good workmanship should be employed when constructing a
roofing system using Mueller products. These procedures and details are not intended to cover all instances, building
requirements, designs, or codes. These details may require changes or revisions for each project, as conditions vary
from project to project. The details provided are proven methods of construction.
Mueller Incorporated does not consider the installation of a standing seam roof to be a
do-it-yourself project. Work should be performed by experienced craftsmen familiar with
metal roofing products and current industry standards.
This installation guide is provided to Mueller customers and contractors as a basic recommended procedure for
the correct assembly of the Mueller Snap Lock Standing Seam Roof System. This guide is intended to be used in
conjunction with the erection drawings to help plan and organize the installation of the Mueller Lock Standing
Seam Roof System. The erection drawings govern specific part arrangement and identify the applicable roof
conditions. The instructions will help identify parts, establish the installation sequence, demonstrate correct
assembly, and point out areas or procedures requiring special emphasis or attention.
This installation guide applies to the Mueller Snap Lock Standing Seam Roof System. Custom roof conditions,
including custom details and instruction, will be covered by the erection drawings. In case of conflict between this
installation guide and the erection drawings, the erection drawings will take precedence.
CUSTOMER’S RESPONSIBILITY
Suitability of details
It is the responsibility of the customer (or designer) to ensure that the details meet particular building requirements
to assure adequate water tightness. It is the customer’s responsibility to determine suitability of supplemental details
for any claims arising from improper detail selection by others or faulty installation of any kind.
Suitability of substrate or structure
It is the responsibility of the customer (or designer) to determine suitability of structure, or substrate for the MSL
panel system. It should be code-compliant and properly engineered and constructed for a structural standing seam
roof system. It must be true and aligned to avoid panel distortion. MSL panels offer little or no diaphragm stability to
the structure, and may not be relied upon for diaphragm support.
Suitability of roof accessories
Mueller may pass along vendor information to its customers for insulation, preformed roof curbs, hatches, vents,
pipe flashings and other ancillary roof accessory items as well as tools and specialty fasteners. This is done as a
convenience to the customer and is not to be construed as an approval of any particular roof accessory item for
any given application. It is the responsibility of the customer to qualify other vendors and products with respect to
quality and suitability for any particular application. Mueller assumes no responsibility for suitability or performance
of materials and accessory items furnished by other vendors.
IMPORTANT INFORMATION