Builders/Roofers

Does anyone know good builders (Structural knowledge) and roofer,
Been let down by a few lately, cheers in advance,

I’m retired but know a bit about structural carpentry and roofing, what’s up?

Had architect look at it, patio doors have dropped down black mortar cement, cracked each side of door inside and a couple of other jobs, and a leaking roof,

Sounds like you need a structural engineer to look at it, ask your architect to recommend one mate.

I deal with a guy called John Payne from up Newbridge way I think.. he’s an SE, does a lot of work in Cardiff.. good bloke