Sandstone Sealer

[plasticpigeon]

Coade Stone. I have no idea if it could have been used on your house. Why do you think the features are cast?

 

[quad121]

At first I thought the columns where some kind of stone. But many of the replies seem to think that due to the sharpness of the features that it may me some kind of 'precast' substance?

 

[quad121]

Here are some more pictures of the column

 

[quad121]

Here's another angle