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For metal roofing, you'll find that our corrugated metal panels are perfect
for your barns, sheds and other agricultural projects. These panels are available in
durable galvalume or high strength steel, this panel will
fit your most basic needs.
| Corrugated Metal Panel Specifications:
- 29 gauge steel
- 24" coverage
- 1/4" rib height
- Panels are a vailable in custom lengths up to 40'
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 Product Warranty:
The corrugated panel carries a 30-year corrosion warranty
on aluminum.
Available Colors:
Metal panel colors shown below will vary based on
your monitor type and settings. Actual metal samples are available - simply contact us.
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Corrugated Metal Panel Installation & Care:
Download
Installation Instructions: 44k .PDF
Building Design and Construction
In order to ensure adequate performance of this product, protect metal
panels from potentially corrosive situations and materials.
In situations where treated lumber will be in direct contact with metal panels
please keep in mind the following: Galvanized steel is compatible
with the CCA (Chromated Copper Arsenate) pressure-treated
lumber that is predominantly used today, but not with the
older Penta treated lumber. Aluminum, however, must be separated
from contact with all treated wood since the chemical preservatives
are corrosive to aluminum. Likewise, dissimilar metals also
require a protective barrier between them to prevent galvanic
corrosion.
When using aluminum panels in
direct contact with steel, use one of the following methods to
separate the two metals: Felt, plastic, bituminous paint, gasket material or caulking.
Contact between metal panels and any potentially corrosive
materials should be prevented. The following substances are a small example of substances that can cause corrosion in metal panels: Fertilizer, lime, acids, feeds, manure, soils,
etc.
Porous insulation board may absorb and retain
moisture, and requires a vapor barrier similar to that described
above. This vapor barrier should be installed such that moisture
is prevented from contacting both the insulation and the metal
panel.
Purlins, Girts and Roof Deck
The material to which the metal panel is fastened should be
properly spaced and sufficiently thick to provide a roof or
wall system able to meet required design loads. Load tables
are available for all of our panels. We recommend spacing
the purlins a maximum of 24" on-center for roofing (note
that 5V requires solid decking).
In re-roofing jobs where the condition of the
old decking is in question, or where existing shingles will
be left in place, new 2x4 purlins should be fastened through
the decking and into the rafters. This will provide a solid
framework for attaching the metal panels.
Roofing
Since sidelaps should face away from wind driven rain,
begin installation by installing the first panel square with
the eave and gable at the downwind end of the roof, farthest
away from the direction of local prevailing winds.
To provide a drip edge, allow an overhang of
1" to 2" at the eave. At the gable edge, use a gable
or sidewall flashing. This will keep weather out, prevent
lifting in high winds, and provide a neat, finished appearance.
The trim and roofing sheet should be fastened every 6"
to 10" inches along the gable edge.
Roof Pitch
The metal corrugated panels require a minimum
pitch of 2-1/2" per foot to ensure proper drainage. For wider buildings and
lower roof pitches, contact us for other suitable
metal panel styles.
Fastening Your Metal Panels
Absolute Steel can supply either screws or nails for fastening into
dimension lumber, with screws being the preferred method of attachment.
Woodgrip screws for use with steel panels are galvanized and
then coated with an organic polymer for optimum corrosion
resistance. For best results with aluminum panels, use #300
series stainless steel Woodgrip screws.
If using nails, please note that the correct way to fasten steel panels with
nails is to drive the nail through the top of the rib so the
washer is compressed securely against the metal. Nail placement
must be in the ribs for roofing projects to minimize the
potential for roof leaks. Be careful - over-driving the nail can split
the washer and dimple the metal, causing leaks.
Wood screws with combination metal and neoprene
washers should be installed in the flat area of the panel
adjacent to the ribs, and tightened such that the washer is
compressed as illustrated above. This will ensure a lasting,
leak-proof seal.
Metal Roof Maintenance
A metal roof should be inspected annually and cleaned as necessary
to maintain its beauty and performance. Any debris or residue,
including leaves, twigs, and dust should be cleaned off promptly
to prevent moisture entrapment against the metal, which may
lead to finish deterioration or premature corrosion.
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