Wiska boxes

[crystal ball]

I have used Wiska boxes for number of years, just lately I have been called to some old jobs where the integrity has failed after about five years, yesterday I looked at one I fitted about seven years ago and the membrane in the unused entries had gone brittle and failed. I hope this is not going to be a common occurrence.

 

[chivers67]

Is it in direct sunlight?

 

[crystal ball]

Not really north facing wall, but they are designed for outdoors