[danans]

> The middle ground is integrated solar panels, where you have normal sized panels but they are flush with the rest of the roof and there are no tiles underneath them

Flush with the rest of the roof seems like a mistake. What if you need/want to replace them with a different sized panel?

[christoph]

Horses for courses relly. I think the panels are all standard sizes now as well? When done tastefully, they almost seamlessly blend with the tile (limits tile choices), certainly from a distance. Some new builds near me, you can’t really see the panels until up close. Raised panels do have an issue in that birds/rodents/etc. nest below them and can cause major damage if unchecked. This is why pest protection (unsightly up close) is a must. The major cost of dealing with nesting under panels comes from the labour and probable need for scaffolding etc. to resolve - i.e. minimum of £2k.

[brikym]

More importantly solar works more efficiently when the panels are cooler. There is a reason most installs have a chunky air gap underneath.

[RealityVoid]

That and op said it's more expensive. Why would you do it flush, then? Looks? Eh, I prefer practicality over form and many architects would agree with being more honest.

[IneffablePigeon]

Looks, no need for bird caging to stop nests underneath the panels, and I don’t believe it is particularly more expensive if you do it when replacing the whole roof. It’s more expensive if you don’t want to replace your roof.