How does a weep hole in a wall form?

These type of weep holes are formed by using a rope of up to 12 inches in length. This is placed in the joints and the other end is extended up to the cavity wall. The water from the back of the wall is adsorbed by the cotton and the on the other side it is evaporated. This process is slow when compared to ordinary weep holes.

How are weep holes used to relieve water pressure?

If the water table is above the structure, but weep holes are provided in structure. As seen as in the figure the major water pressure is eliminated using weep holes, the pressure due to water is relieved by the holes. The height of the placement of holes plays an important role.

Why are there weep holes in my brick?

When holes are installed in the brick masonry. The mortar squeezes out between the successive courses of bricks and drop down in the weep holes. This can result in partially or totally blockage of weep holes by trash mortar.

What to do about weep holes in veneer wall?

Sandbagging against weep holes around base of veneer wall: When you anticipate floodwaters around the home, dense packing of sandbags around the wall bottom can slow water penetration into the veneer wall cavity and should also reduce the volume of clogging mud that will enter those openings from flooding

Why are there weep holes in my brick house?

But what you’ve noticed are almost certainly weep holes in brick: openings left deliberately by the mason who built the wall as a defense against water damage. Weep holes can be found on virtually all houses with brick siding, whether they’re brand new or centuries old.

What should be the distance between a weep hole?

The recommended distance between weep holes is 450 mm. From engineering point of view, weep holes relieve hydrostatic pressure or water pressure on walls. This reduces the structural design demand of the water and earth pressure by reducing thickness as well as reinforcement requirement.