Uses of Corrugated Fiberglass Roofing
Have you ever noticed the green and transparent plastic looking
panels that cover your neighbours back porch, patio or greenhouse? These are known as corrugated fiberglass
roofing panels. Made from fiberglass, these panels are a less expensive way to roof an area outside. With
translucent panels, they are often used above plants and the back patio area. These roofing panels are often
used for chicken coops and greenhouses too.
These corrugated fiberglass roofing panels are produced by a large
sheet of high strength glass fibers that are imbedded in an organic resin creating a translucent laminate.
For corrugated panels, the formation is then rolled into the distinctive pattern like a wave. Because of its
translucent properties (able to let light pass through the material), it is able to filter out the harshness
of direct sunlight. In addition, because of its flexibility, they are one of the roofing materials that are
easier to install and can be punched, drilled, sawed and nailed on without causing damage to the overall
panel. This convenience makes corrugated fiberglass roofing panels a very simple roofing
Roofing Panels Installation
when purchasing for corrugated fiberglass roofing panels, they come in different grades of panelling called a
“series” ranging from 410 to 800. Each
series has a recommended roof span – that is the distance of your underlying framework for fastening the
panels. For example a 410 series has a maximum span of 20, 22, 25, or 32 inches. Knowing the measurements and
the overall framework is key to ordering the right series that’s perfect for the job.
In addition, the overall design loads of the
panels are governed by local building codes. It is highly recommended to
contact your local code authorities for load and stress specifications.
Lastly, the roofing panels should not be used to support any
undistributed weight on its surface. Thus, climbing and putting body weight on these panels are highly
dangerous and can result in serious injury as they are not strong enough to support the load. During
construction and installation of these and any roofing materials, use only approved ladders and
The most important factor in installing corrugated fiberglass
roofing panels is to factor the prevailing winds and overlapping accordingly. Start at the leeward end and
work toward the wind. Once you have your desired framework built, there are certain things to remember about
installing the fiberglass corrugated panel. When installed properly, it can provide weather
proofing benefits like any other roofing material.
You should provide a minimum of one corrugation overlap at the
sides. Provide 8" end-lap for a roof with a pitch of less than 4" to 12"and a 6" end-lap for pitches or more
than 4" to 12". Remember to fasten panels through crowns at every second corrugation. Use fasteners with
armored Neoprene washers.
Space fasteners 6" to 8" on center at panel ends: 12" to 16" on
center for intermediate purlins and siding applications. Purlins are your beams on your roof that you nail
to. Your purlin members should be at the maximum intervals. You can check a load/span chart at the hardware
store where you will be purchasing your panels.
and Tweaking Corrugated Fiberglass Roofing Panels
corrugated fiberglass roofing panels are very versatile, you are able to shape and fasten the material into
the area in a number of ways. To trim and shape your panel, all you need are basic skills with the hand saws
and power saws. The best types of blades and discs to cut theses panels are fine toothed carbide tipped
blades or even a safety fabric abrasive disc. With these tools, shaping your panels to fit the desired area
becomes relatively easier compared to other roofing materials.
When drilling your fiberglass panels, make sure the drilling be
not less than 1 and ½” from the panel ends as any closer to the edges will result in the cracking of the
panel. In addition, the holes drilled should be a minimum of 1 and 1/16” larger than the fastener diameter.
For quicker installation, it is possible to drill multiple panels at once. If you need to bend your panels
for installation do not install them in less than 60 degree weather.
The most common fasteners used in fiberglass panel installation
are weatherproof nails or wood screws with neoprene washers. The size depends on the type of corrugation of
the panel as well as the framing material. It is best to drill and fasten your valleys first then work on
your peaks in the paneling. Make sure any burrs from drilling are cleaned away before using screws to protect
the neoprene sealing face.
Remember to follow all safety precautions prior to installing the
fiberglass roof panel and do use safety goggles and equipment when installing any type of