JakeD formulated the question :
I'm installing a number of security cameras on the external walls of my
house. I am interested in also installing some sort of rain protection for
same. The first thing that sprang to mind was to use inverted quarter-
sphere uplighter housings. However, buying the housing alone without the
light-holder and other gubbins is not easy, and paying out for the full
enchilada can be pricey - when you want six! Can anyone suggest anything
else?

JakeD

Cheap as chips halogen outdoor flood light units - just take the lamp
out and point the camera through the glass fronted housing.

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Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk