We are re-roofing and had a bat survey done last summer, where a few common bats were seen entering/exiting the roof. Our ecologist said in his report that we'll need 6 bat tiles in the new roof to compensate.
It's an old building, so we need breathable materials to prevent condensation and damp, but as there are bats we've also discovered that only bitumen felt is allowed, which is not breathable. We've asked our ecologist about it and he's suggested non-access bat tiles, therefore allowing us to use breathable membrane, which we'd get our roofer to construct or adapt from commercial bat tiles. This was also said with the caveat that Natural England have the final say and could say no.
I'm obviously no ecologist and I like to think he knows what he's talking about, but surely this defeats the object?! Bat tiles are designed to provide access to the roof, no?! I'm very confused. My worry is that if we apply for this and Natural England say no, we'll have to fork out another £1500 for a new bat survey, as last years will be out of date