Attaching an external light (flat backed) to a rendered wall?

[iain mcgowan]

Struggling up here, I'm trying to attach a light to an exterior wall that has a rendered surface (a 'Harled wall' ) the back of the light is a flat surface but the wall surface is like the Himalayas (relatively). I don't want to bash away at the render so is there anything that can close the gap between the wall surface and the light (or a board if I attach that between the two)?

Kind of imagining a rubber gasket type thing to seal between the two????

Apologies for the clear lack of knowledge here from a diy'r....

 

[footprints]

No real need to seal the gap the light should be waterproof, I would use some spacers on the screws, rubber tap washers or screw caps with the cover snapped off are my usual "mini spacers" for all sorts of jobs

 

[foxhole]

You could use foam window/door seal and then use that to hold silicon to seal.

 

[footprints]

Foam can be a bit messy!

 

[foxhole]

Foam can be a bit messy!

Not expanding foam , foam tape .