Roofing, fascias and waterproofing

As far as we could verify in this round, there is no central government standard for roofing that sets the pitch, overlaps or fixing points. All the figures come from each tile model's manufacturer installation guide, and they really differ between models. So this page doesn't force a single central figure…

• This page contains
• The first thing to do — get hold of the installation manual for the exact tile model you're using
• Real figures from four manufacturers' manuals — see how much they differ
• Metal-sheet roofing — a system with a completely different set of figures from tiles
• Extras fitted on the roof — three things with manuals of their own
• Permitted pitch — and the figures tied to it
• Fixing tiles — and the point coastal houses must read first
• Water gets into a roof three ways, and none of them is a hole
• Know the name of every part before you talk to anyone
• Measure the roof pitch yourself
• Valley gutters — the drain nobody thinks of as a drain
• Screws, flashings and dissimilar metals meeting on the roof
• Flashings — nine details the manufacturer has already standardised for you
• Inspect from under the roof — where you can really see without climbing
• Test it yourself with a hose — from the bottom up, one section at a time
• What you can see from the ground without climbing up at all
• Documents to ask for before paying the roofing instalment
• Fall protection on roofs — overseas criteria you can ask for as extras