Wel mae'n bellach yn bryd i dalu am y to, yn gyntaf mae gennym ffelt sy'n cael ei weld o'r tu mewn.

Yna, mae gennym inswleiddio i ychwanegu, yn yr achos hwn ei y tair blynedd diwethaf, gwlân cneifio gan ein ddefaid ei hun.

Then over the centre we put a disc of plywood so the soil won’t put pressure directly between the spars of the secondary reciprocal frame.

Then more wool and an old duvet cover over the tops of the rafters to avoid any direct pressure against the water-proof cover.

A few extra dumpy bags cut up to fill in a few gaps still open.

Then the water-proof cover.

Chris bond with the soil.

The end of the day.

The end of the next day all the turf we removed from the build site is now on the roof along with a little more from the next site and the Sedums planted.