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Book a door or window in a wall is a weak point. Jambs, lintels, supports or prefabricated thresholds help prevent the appearance of cracks.

Make yourself a new window

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.

Block: creating a window opening: opening

Measure and record the distance to start the window reservation.

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Block: creating a window opening: window

Note the length of the window sill to be placed and postpone its rating to its location on the breeze blocks.

Block: creating a window opening: window

Place mortar on the breezeblocks brimming slightly.
Trowel the sides of the support.

Block: creating a window opening: block

Lay the window sill and adjust it.
The inner side edge depends on the insulation that will be installed.

Block: creating a window opening: window

Lay a cinder block without sticking it.
Draw a mark on the block at the height of the support.

Block: creating a window opening: sill

Using a grinder and the mallet, make a notch about 4cm deep.

Block: creating a window opening: window

Place the cut blocks on either side of the window sill and fill the notches with mortar.

Block: creating a window opening: opening

Continue the elevation of the wall by posing in staggered blocks and half-blocks.


Video Instruction: how to block up window. bricklaying tutorial