You certainly need to make a request of the roofer. Basically to never venture within a mile of your property ever again. What a horrible sight. You need to get an actual roofer to rip all that up and do the job properly.
When I had the roof done I paid after completion, which included about £3k materials and scaffolding. But when I had the kitchens and bathroom done I paid upfront for all goods, about a month prior to delivery. Fitting was after completion. The boiler and central heating system was 10% deposit...
I had mine done last month. Shellcast, but equally difficult. You can't just use a brush. Also, whilst it might help you sell the house, it's not going to last more than a few years. May not even last one.
You can rent a spray gun. I'd recommend that. A fifty quid gun won't work. But you don't...
Likely a bird is building its nest in your chimney, and the sound you hear is dislodged mortar from its nest-based activities. I had this in my previous house, for a few weeks every year, normally between 7am and 9am.
Lucky it didn't rain before he got the tiles on. When mine was done a few months back we got 36mm of rain in 5 hours with 40mph winds - there wasn't a tile on the roof, just membrane.
I'm just getting a fan installed in the gable end with a 150mm hole and a vent on the outside. Controlled by a Wifi adapter so I don't need to go up there to change the settings.
Except I didn't. I commented one hour after the previous post, which appeared earlier today and was deleted after I commented on it. I edited mine to reflect that, as you can see.