IBG vs manufacturer’s warranty vs company written guarantee: what’s the difference?

An Insurance Backed Guarantee, a manufacturer’s warranty and a company written guarantee cover different faults, with different claim routes. Here’s who covers what and when.
Do UK installers legally need an Insurance Backed Guarantee?

Whether you must provide an Insurance Backed Guarantee depends on your trade and scheme. Here’s the position for double glazing, renewables, roofing, bathrooms, kitchens and general building — trade by trade, in one table.