Its a 100 year old farmhouse and had a very old roof you are correct. My main concern is the work may have needed building control sign off and we had no option to use this route as he didn't tell us he had done so much work. During any sale thwy might ask for info. Is £28,000 about right for the work done?
We have no invoices for the work it only shows costs for new slate tiles, new felt, wood, screws, replacement for a new lintel that was rotten, lead work for one hip ridge, interlocking dry ridge tiles to the main ridge and other 3 hip ridges. There's no charges for strengthening rafters or ridge internally. Thanks for taking the time to comment. I'll add some pictures of the finished roof to add context.