advice needed regarding leaking conservatory roof

[bongoboy]

we bought a cheap pvc sunroom last year (big mistake its not got a reinforced frame just hollow pvc supports), it is very flimsy and drafty its not a proper pvc reinforced framed conservatory.
the roof keeps leaking where it joins the house, we have put proper lead flashing on it which is in the house render (used a grinder ) and mortared in and bitumined, but i think where the conservatory is flimsy it can move slightly in high winds like today and the bitumen and mortar keeps cracking and today i have 4 leaks and bowls catching the rain water.
apart from buy a new conservatory, does any one have any suggestions to stop the leaks

thanks in advance

[NazNomad]

Short of reflashing it with something flexible (a thick butyl maybe?) you need to stop it moving ... can it be more firmly affixed to the wall at the top?

[The Builder]

I'm sorry you've got a duff product Bongo ......... sounds awful :o(
A common mistake with cover flashings, is that they should "stick" to the roof underneath. Back in the day, when it was common to dump a heavy sand & cement fillet along the junction, good practice was to lay newspaper on the roof so that the fillet DOESN'T stick to the roof ........ only the wall.
This allowed for a bit of movement without taking the flashing/fillet with it.
Fix the structure to the house by all means. In fact, by the sound of it, fix it to anything you can find :o)
It needn't be a write-off.......... just needs fixing,stiffening, and a bit of bracing to make it rigid. Any decent carpenter or builder could show you how.