This
is a very easy to make heat shield for your nestbox. Make sure the side
that opens (front or side) does not face West. Also, always make sure
never to allow the afternoon sun to enter the box, i.e. avoid having the
entrance facing West. Cut two pieces of wood (B/C exterior plywood or
sheathing is fine) one equal in size to the roof, (or at least larger than the top
of the box,) and another equal to the side. Make six spacers of wood
(about 1.5" squares, 1/2" to 3/4" thick,) for spacing the second
roof and side from the actual roof and West side. Make a hole in each spacer (larger than the
screw you will be using, -six decking screws, 1 5/8" are fine.) Now
attach the "second" side and "second" roof using the screws and spacers. Each
second layer will need the piece of wood, three spacers and three
screws. The photo and detail on this page will make the construction easy!
The
photo on the left shows the actual box (this happens to have two entrances, but
many of my boxes are with one entrance.) Click on the picture for a better
view.