Lime or cement (or a mixture) ?

[Tilbert]

Hello, we are having some repairs on the roof of our old barn, which we are converting into a kitchen.

We are unsure whether to use lime mortar, or cement, or a mixture of the two on the area under and adjacent to some coping stones.

The stones are in general good condition, but the existing mortar underneath is not and some of the supporting wall stones are also damaged.

We plan to do build up the gaps around the damaged wall stones and bed the coping stones back on, but weighing up which mortar to use.

same for the ridge tiles.

 

any guidance greatly received. Many thanks.

[TonyT]

I’m for using the same materials that were originally used, so lime mortar for me.