Roundtower Lime A Guide To Internal Lime Plastering | Page 2

A
GUI DE
I NT E RNAL
T O
L I ME
P L AS T E RI NG
PREPARATION OF
THE WALL SURFACE
he successful application, bonding and Where excessive hollow or unevenness is
correct hardening of hydraulic lime present the areas should be corrected by
mortars, requires that the background use of mortar and stone or brick slips
should be clean, free from vegetation, free bedded into the mortar, with the aim of
of contaminants and reasonably dry presenting a reasonable flat background
throughout the wall mass. The wall should before plastering commences
be structurally sound and the masonry and
bedding mortars in good condition. Suction Control and Bonding
The application of various dubbing out Before the application of any new lime
coats should not be seen as remedial repair coatings, hydraulic or non-hydraulic, it is
work to the masonry or brickwork vitally important to check to the degree of
background, the replacement of missing or suction within the background, poor or
damaged masonry or open joints should be excessive suction can result in a weak
repaired before any plastering of dubbing bonding with the substrate caused by
out coats are applied. rapid de-maturing of the newly applied
render,