View Single Post
Old 09-13-2011, 12:36 PM   #20 (permalink)
Otto
Master EcoModder
 
Join Date: Mar 2008
Location: USA
Posts: 568
Thanks: 1
Thanked 73 Times in 58 Posts
Some of the garden edging plastic thingies used for air dams have an extruded hollow tube along one edge: If the hollow edge is to be used at the bottom of the air dam, simply insert an aluminum tube or length of electric conduit pipe of correct diameter into the hollow edge as a stiffener. Bend the tube to the arch or curve you want for the air dam, and the arch will resist buckling from wind pressure.
  Reply With Quote