You will not be disappointed.
The problems that moss causes on roofs is that channels between the tiles becomes blocked and causes water penetration. It also causes gutters to become blocked once it becomes detached from the tiles and falls into the gutter.
We can also inspect your tiles and pointing on ridge tiles and where neccessary repair or replace loose tiles, repoint loose ridge tiles and any other issues that need attention to ensure that your roof is ready for inclement British weather
It also causes gutters to become blocked once it becomes detached from the tiles and falls into the gutter. Something a gutter hedgehog can help prevent.
When renewing the felt the old felt must be removed and the roof thoroughly cleared and cleaned of all contaminants before new felt is fitted.
You will not be disappointed.