Happened here last year brought all one side off.

looks like the ANGLE OF DANGLE was too shallow (guessing it a bungalow)
mine is old welsh cottage steeper pitch probable, therefore the shear factor is greater so
will slide quicker than shallow angle, whatever looks expensive ...!

Secondary point, wonder if people who are having all these other things put on the roofs ,
the extra weight more snow, ect ect is the roof past its design parameters for when it was first made ..??
who will take the blame ,home owners ,Installers
and are they informing their Insurance companies of the mods ....JUST A THOUGHT

 Wales
Were the mud is thicker, and the ruts are deeper.
(And we have the water to wash it off, and more on the way..! )
Sd4 and chrome Ar*e piece, Auto box for best fun
09 Xs Gone
12 xs Gone
HSE with Leather seats and 4 years warrenty.. staying for now !

check your loft insulation, its either the result of a thaw and refreeze or your valuable heat is escaping and melting the snow on your roof At work
At home

"I can't always believe facts I read on the web" - Charles Dickens

winner by default of the tractor vs caravan race

Yes CG, there was a thaw while there was a lot of snow on the roof followed by a hard freeze.
Had the same thing happen to my garage despite a very steep pitch.
All the houses in the village looked the same.
Some new clips and all was fixed  Another member of the failed FL2 clutch/DMF club, twice.

That's some icicles, any bigger and you could get your crampons and ice axe out and started climbing them  Former Mod/Member, with the most post & Chicken George Arch nemesis

My doctor gave me some cream for the crampons  Another member of the failed FL2 clutch/DMF club, twice.