makie

Sweet, I see a decent amount of people these days not ventilate their roof. I get a fair bit of work out of it so good to hear it's a vented ridge.

Make sure you have vent strips running on top of the fascia then. How are you finishing the ridge? In Scotland we tend to use ventilated zinc but I'm assuming you may be using concrete ridges?

So I would assume that you will be putting vents in the roof then, correct?

Are you going to have a ventilated soffit?

The link doesn't seem to be working for me. Based off of the black mineral I can safely say you're doing a flat roof. Is there any fire rated requirements for the build?

Alutec have a good metal fascia system. - https://www.marleyalutec.co.uk/products/evoke-fascia-soffit-and-copings/

Use some white diluted vinegar and spray it onto the area and it will sort it out

You can get some UPVC that has an angle return made for this type of build. Eurocell used to sell it

100mm is the standard for a cover flashing up-stand in my area and 125mm for it to be raggled into the wall

Just pointing out that this is a watergate not a valley.

I've used lead, GRP or zinc whenever I have done it

When my old man had a meeting with one of the VAT agents they suggested we just add the VAT on to the total amount due and not tell them that there is VAT added on.

It's purely because it is cheaper and doesn't make much of a difference

Major house builders don't do it purely because it is cheaper and not required.

Slated houses need sarking but if there is tiles on it the battens alone help hold the trusses together also. The only time I see it now on sites is when they are being built for the council. Aye persimmon, Cala and all the other major builders are poor these days.....