Sub-sill on masonry and concrete projects


1. Apply a smooth plaster finish to the window opening
Preparatory step for window installation on masonry and concrete construction projects
Apply a smooth plaster finish to the side and bottom areas where seals are to be installed.
If a plaster finish or sealing filler is applied to the wall area under the window, the transition to the side reveals can be sealed with EXTOSEAL ENCORS to cover any possible cracks (capillary gaps).
A sloped wall surface under the window will drain off water.
1. Apply a smooth plaster finish to the window opening
Preparatory step for window installation on masonry and concrete construction projects
Apply a smooth plaster finish to the side and bottom areas where seals are to be installed.
If a plaster finish or sealing filler is applied to the wall area under the window, the transition to the side reveals can be sealed with EXTOSEAL ENCORS to cover any possible cracks (capillary gaps).
A sloped wall surface under the window will drain off water.


2. Side details
If the reveal surfaces are to be plastered, allow EXTOSEAL ENCORS to run approx. 6 cm up each reveal side or else to the upper edge of the window sill profile.
In the case of reveal plates or a rear-ventilated structure, allow approx. 10 to 15 cm here.
2. Side details
If the reveal surfaces are to be plastered, allow EXTOSEAL ENCORS to run approx. 6 cm up each reveal side or else to the upper edge of the window sill profile.
In the case of reveal plates or a rear-ventilated structure, allow approx. 10 to 15 cm here.


3. Apply tape to the sill surface
Apply EXTOSEAL ENCORS to the sill surface, extending it at least as far as the inner edge of the window profile or – if necessary – across the entire depth of the structure.
Stick the excess tape on the outside to a suitable drip profile.
3. Apply tape to the sill surface
Apply EXTOSEAL ENCORS to the sill surface, extending it at least as far as the inner edge of the window profile or – if necessary – across the entire depth of the structure.
Stick the excess tape on the outside to a suitable drip profile.