I bought rather a lot of 100W LED lights from Ebay.
Rated as IP65 and very effective for a few weeks.
The body is aluminum, with a glass front held on with a light steel
"clamp", this is fixed by four corner screws and as up to 15cm of the
clamping plate is not under direct pressure from the mounting screws,
water gets in and fogs the glass. The LED plate gives up after a month
Silicone and Hammerite help, but I notice the fog has returned on a
few, as well as rust on the steel plate [foil might be a better
I,m considering melting glue sticks in a metal bowl and immersing the
edges of the lights so that the clamping plate and a small overlap up
the glass are immersed. Does this sound feasible? I'm hoping that the
molten glue will be a better water repellent than the liberal dollops
of Hammerite I have been using. I am also hoping it inhibits rust more
Instead of cheap chinese ones, buy nice Brackenheath ones.
Nice silicone gasket and conformally coated, with PSU on-board the LED
'chip', big heavy heatsink, and the power consumption tallies with what
it says on the box, rather than being 50% at best, so the 50W probably
as bright as your supposed 100W.
The only negative is if you need to extend the cable without an external
junction box, it's fiddly and warranty voiding.
Thank you, I looked at the Screwfix units and will try a couple.
They seem impressive and the thirty Watt are at around the same price
as the 100W units I have installed.
I can afford to lose a little light in two areas, If there is no
major reduction I will replace all the lights with Screwfix units as
And many thanks.
On Sat, 13 Jan 2018 14:48:45 -0800 (PST), firstname.lastname@example.org wrote:
Damn & Blast, I didn't leave any form of vent, In fact I liberally
slopped Hammerite over every surface, nook and cranny, glass excluded
I really should have thought that one through!
On Sunday, 14 January 2018 00:59:16 UTC, Archibald Tarquin Blenkinsopp wrote:
And you missed hammeriting all over the glass!
I'm wondering how to fix it, pooled condensation must be able to drip out somewhere. I suppose either make a hole where it collects or re-do the sealing, otherwise your unit will be very short lived.
On Sat, 13 Jan 2018 21:20:42 +0000, Archibald Tarquin Blenkinsopp
Is that taking the frame and glass off, running a bead of silicone
around the body where the glass touches and reassembling? Or just
gooping silicone along the external joints?
Something semi sealed like this is not going to be water vapour
proof, temperature and/or pressure changes will cause the unit to
"breath", drawing water vapour in which will then condense and not be
able to get out. A small (<1 mm) vent hole at the lowest interior
point serves two purposes, a way for the water to get out but more
importantly doesn't allow a pressure difference between inside and
outside to exist so stops the unit "breathing" (as much).
Not a lot you can do about that other than completely painting
(dipping?) with hammerite. No point in doing anything less and make
sure that there are *no* bubbles even barely visible ones. A second
coat within the timescale specified fills the bubbles in the first
coat and makes quite a difference to the longevity of the coating.
On Sat, 13 Jan 2018 23:58:34 +0000 (GMT), "Dave Liquorice"
It was, yes, the full works.
I failed to do this! This will be an easy upgrade though hopefully. A
small hole and maybe a bit of WD40 spray tubing siliconed in to act as
I suspect that my approach of dolloping on vast quantities wasn't the
best action then, mind you I should have known anyway!!
I will inspect and vent those that have no rust showing, but I expect
the proper way to repaint would be to remove what is already on and go
down to metal first. Not a worthwhile pastime!
I will paint the remaining new ones properly and vent them. Any
further failiures and I hope to replace them with Screwfix units.
Many thanks for the advice.
On Sun, 14 Jan 2018 00:45:27 -0800 (PST), email@example.com wrote:
You are probably right. I just had visions of the thing trying to pull
a vacuum when there was a dirty great drop of water nestling on the
Again a small bit of actual thought and it's bye bye to the breather
Once again, many thanks.
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