LIPPING OF JOINTS OF MASONRY WITH CEMENT.
The well known practice of what is termed “lipping” with cement the mortar joints of masonry exposed to the wash of water is described by him as new in his report to the Trustees of Marykirk Bridge, of 16th July 1812, where he says:—
“Upon carefully examining the face joints of the masonry of the south pier under water line, some of these were found not to be so full of mortar as could have been wished, and although Mr. Logan (the inspector of works) had taken the precaution to cause the joints to be covered with clay to preserve them from the effects of the water, yet this had not altogether answered the purpose, and hence the reporter recommended to the meeting of the 8th current to provide a few casks of Parker’s Roman Cement, to be laid to the breadth of three or four inches upon the bed and end joints under the low water mark of the remaining piers.”