Do not mount DIRECTLY on combustible surface

hidetoshi · 21 Apr 2015

Hi first time to ask question. Bought a PIR security light 120W > After reading the installation instructions, found out the light was-- " not suitable for direct mounting on normally flammable surface" My property has wood cladding, is this instruction exaggerating the risk? Is there some thing I can sandwich between the unit and the cladding that would eliminate the risk ? Thank you for any helpful suggestions

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Taylortwocities · 21 Apr 2015

Around here, we usually tell folks to follow the manufacturer's instructions.

When they say

not suitable for direct mounting on normally flammable surface

they are probably saying that for a reason. Maybe a previous customer set fire to their house using one of those lights….

Chri5 · 21 Apr 2015

Post a link of the item.

There might be a chance that mounting it on a tile, lump of cement board or a metal Beezer box would be ok.

Taylortwocities · 21 Apr 2015

Or a BESA box

DaveHerns · 21 Apr 2015

I fitted one to the plywood fascia board of my garage many years ago and it's been OK . Can't recommend you do it though !

hidetoshi · 22 Apr 2015

Thanks for the ideas, was thinking along the lines of a heat resistant board as instructions said " not directly" . The item can be viewed on screwfix site. code9145D. Thanks again

Taylortwocities · 22 Apr 2015

Ahh one of those…

Notwithstanding the MIs. I have installed several of those, directly on wood backgrounds, with no issues. The mounting plate, and its box, is made of plastic, so that part is not going to get hot.

It will get hot through the cooling louvres at the top though, so be sure to take care with clearance distances.

JohnW2 · 22 Apr 2015

Taylortwocities said:
Notwithstanding the MIs. I have installed several of those, directly on wood backgrounds, with no issues. The mounting plate, and its box, is made of plastic, so that part is not going to get hot.

Quite so. The OP asked the question "is this instruction exaggerating the risk?", and I would say that the answer has got to be 'yes'. I'd be surprised if, particularly outdoors, the mounting would get even significantly warm, let alone hot enough to ignite wood!

Kind Regards, John

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Do not mount DIRECTLY on combustible surface

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