By Alex A. Kecskes
Commercial buildings have all sorts of places pest birds like to gather. One of their favorite places to squat on is the parapet wall, especially with the approach of spring. These low walls, constructed above the roofline, usually span around the perimeter of a building.
The top of a parapet wall is most vulnerable to pest birds. These walls are usually capped off with limestone, terra cotta, hard-fired clay, or pre-cast concrete. All these materials tend to be porous and "drink up" bird droppings. This makes for a very unsightly wall. If the bird droppings are not removed and left to accumulate, they can eventually eat into the wall and cause it to crumble. If the wall is capped off in metal, bird droppings can discolor the metal and eventually eat into it, creating unsightly holes.
One of the most effective ways to keep large pest birds off parapet walls is the Bird Spike. Recommended by architects, contractors and government agencies, these spiked strips make it impossible for birds to land on or near the wall. The blunted spikes will not cut or injure the installer and are available in different sizes. You can get long-lasting stainless steel spikes, which come in 3-, 5- and 8-inch widths; or the less expensive plastic spikes, which come in 3-, 5- and 7-inch widths. Some bird spikes have a non-reflective metal finish.
The best steel bird spikes are manufactured into a UV-protected polycarbonate base. These feature a patented bend-and-crush design to keep the spikes from falling out of the base. The durable stainless steel bird spike comes pre-assembled in two-foot sections. They're easy to install because the strips feature pre-drilled holes along the base, so they can be glued, nailed, or screwed into any surface. One manufacturer offers a 10-year guarantee against UV breakdown of its product.
The best plastic bird spikes are made of a UV-protected polycarbonate plastic. They're GSA approved, humane and blunted at the tips so as not to injure birds or the installer. They work just as effectively as the stainless steel models, but since they are non-conductive, they won't interfere with cell phone antennas, dish antenna or other wireless transmissions or reception. They can also tolerate extreme temperatures from 310°F to -200°F.
Plastic bird spikes come in two-foot sections, 50 feet per box. The spiked strips are available in three different widths--3-, 5- and 7-inch--to accommodate the parapet on which they are installed. The base of the spike is 1.5 inches wide, and can be glued, nailed, or tied down to most surfaces. A handy glue trough on the base of the spike ensures fast, easy application. To more closely match the exterior façade of your commercial building, you can now plastic get bird spikes in different colors--like white, tan, gray, black, brown, brick red and crystal clear. One manufacturer offers a 5-year guarantee on its plastic spikes.
Remember the key to keeping pest birds from your parapet wall is to install effective bird deterrents now, before the birds arrive in spring.
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