Book a door or window in a wall is a weak point. Jambs, lintels, supports or prefabricated thresholds help prevent the appearance of cracks.
To create your window opening, it's all about measurements!
The reservation in the wall then requires no particular technicality if using a prefabricated window sill. There are different lengths and depths, ready to fit into the masonry.
If you still want to make it custom-made, you will have to pour it on the spot after making a formwork in panels or planks of wood. To make the table, you will also have to calculate to install the specific framing blocks.
Measure and record the distance to start the window reservation.
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Note the length of the window sill to be placed and postpone its rating to its location on the breeze blocks.
Place mortar on the breezeblocks brimming slightly.
Trowel the sides of the support.
Lay the window sill and adjust it.
The inner side edge depends on the insulation that will be installed.
Lay a cinder block without sticking it.
Draw a mark on the block at the height of the support.
Using a grinder and the mallet, make a notch about 4cm deep.
Place the cut blocks on either side of the window sill and fill the notches with mortar.
Continue the elevation of the wall by posing in staggered blocks and half-blocks.