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recent years, an increasing part of our business is the reroofing
of low slope pre-engineered metal buildings. Roof problems
on this type of building are commonly related to the many
exposed fasteners that secure the roof panels to the structural
roof purlins. Over time, the constant expansion and contraction
of the metal roof contributes to the fasteners loosening,
jeopardizing the roof system’s water-tight capabilities.
In addition, excessive heat loss often occurs due to inadequate
insulation, resulting in the formation of ice dams and water
infiltration at the unsealed seams and exposed fasteners.
We have reroofed many pre-engineered metal buildings with
two roof systems. Both systems yield a leak free
roof with increased insulation value.
Single Ply EPDM(Rubber) Roof System
For Roofs With Slopes Less Than 2"/12”
Standard installation steps are as follows:
- The existing metal roof remains in place.
- Roof insulation (one or more layers) is
installed between and over the ribs of the existing metal
roof panels. On most metal buildings, the existing insulation
is installed on the underside of the roof, causing compression
of the insulation and zero insulation value at every purlin.
Our insulation system adds significant R-value, reducing
heating costs during winter months and cooling costs in
the summer. The roof starts paying for itself immediately
in energy savings.
- A Single Ply EPDM membrane is installed
over the insulation.
- This roof system qualifies for a material
and system warranty from the manufacturer, Carlisle Syntec
Systems, for a period up to 20 years. Carlisle is the industry
leader in single ply roof systems.
Standing Seam Metal Roof System For
Roofs With Slopes Greater Than 2" per foot (2/12)
The basic installation steps are as follows:
- 2" x 4" wood nailers are fastened
over the existing metal roof 2' on center and parallel to
the eaves. The nailers are necessary to properly secure
the new standing seam metal roof panels.
- Roof insulation is installed between the
nailers and often times a second layer of roof insulation
is added to increase the insulation value.
- Continuous 20" wide roof panels are
fabricated from either 26-gauge mill finish galvalume or
24-gauge color-coated galvalume with a Kynar 500 finish.
The advantage to our system is the absence
of any exposed fasteners penetrating the metal roof panels.
List of Completed Metal Building Retrofit
Projects for Reference:
- Coles Transportation Museum - Perry Road,
Bangor, Maine (EPDM)
- Moss Inc. - Route 1, Belfast, Maine (EPDM)
- FMC - Crocketts Point (several projects),
Rockland, Maine (EPDM)
- Maine Yankee Information Center - Old
Ferry Rd, Wiscasset, Maine (METAL)
- Ingraham Equipment - Knox, Maine (METAL)
- Irving Oil Corporation - Portland Int.
Airport, Portland, Maine (METAL)
- Hight Partners - Madison Avenue, Skowhegan,
Maine (EPDM & METAL)
- Kennebec Equipment Rental - Several Locations
(EPDM & METAL)
- Owls Head Transportation Museum - Owls
Head, Maine (EPDM & METAL)
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