Wall Weeps Weep Later
How and when these sash cord sections were placed or embedded in the bed joint of mortar impacted whether they had any weeping capacity.
What is really happening is a small amount of moisture is actually exiting the cavity through small voids in the bed joint of mortar at the 5 o’clock and 7 o’clock positions on the bottom radius of the sash cord.
Australia it is not unusual to see water flowing from the weep holes on the prevailing side of well constructed houses after a ‘gully raker’ or monsoonal storm.
There was no mastic, or not enough mastic, at the lap splices in the flashing. Rope weeps may contribute to moisture problems, as was the case in this project. You will probably be able to pull the weep rope out of the mortar joint, so water can drain freely. Flashing needs to be installed correctly and per the manufacturer’s instructions. This modern wall assembly has isolated the veneer to experience more thermal and material movement, moisture-related stresses, and staining potential than massive masonry walls.
You can find some fiberglass screens—readily available, very inexpensive. But you don’t want to use anything that has metal in it, because sooner or later it’ll rust. They may also include a drip at the front lip to aid drainage.
Advanced Masonry Weeps
This process is slower than with ordinary weep holes. In such cases the weeps consist of small-diameter plastic, clay or metal pipes extending through the wall to a layer of porous backfill. Weep holes are also placed above windows to prevent dry rot of a wooden window frame. Whether or not they are serving their intended purpose is another question. During a rain event, the masonry wall absorbs a tremendous amount of water and and stores it. It is intended to allow ventilating air to enter behind the wall to help dry the structure. They are large enough to allow mice, roaches and other pests to enter the structure of the house. Weeps or weep holes and their placement is one of these things.
Flashing at the Base & Weep Holes Featuring master mason Bryan Light, the “Brick Masonry Techniques for Builders” DVD …Weep Holes in Masonry and Retaining Walls Types Functions and – Masonry Wall Weeps
Water that enters the cavity due to capillary action, condensation, damage, or accidental flooding needs to escape somewhere. The cause for moisture penetrating the walls of our masonry structures may lie in the flashing and weeps. On one particular job we saw, the weep ropes used were not letting the water drain from the cavity wall. This cavity wall had an outer wythe of 4 inches of brick, 1 inch of airspace, 1 1/2 inches of rigid insulation, and 8 inches of concrete block.
Keep the drill slightly angled up, so that the flashing does not get penetrated. It is necessary to install a mortar-collection device at the base of the wall and at the heads of openings, so the weep vents can work correctly and drain.
Perhaps builders and owners should request a picture of all flashing installations be submitted and approved before the masonry gets installed over it. That”s why you need flashing above doors and windows: the lintels are the bottom of a wall cavity. Additionally, the drying efficiency of uninsulated mass-masonry walls is aided by the passage of interior energy out through the mass. All these factors make rapid drainage and drying of exterior wall systems even more vital. Horizontal cavity air baffles often occur naturally at veneer shelf angles. Care must be taken to ensure the angle is not too steep or too flat. The oil prevents mortar bond and the rods or ropes are removed after setting which leaves a hole similar to that of a tube.
Baffled vents can help prevent this problem. Mortar collection devices can be installed to try and alleviate this problem. So you need some place for that moisture to escape and air to circulate. Another way is to use a scouring pad like this. Please answer as so many have been asking this same question. The technical note further explains that non-corrosive metal, mesh or plastic screens can be installed in the open head joints, thus forming weeps. Some of the weeps that have been around for a while are described below. These tubes are installed simply by cutting away the bed mortar placed on the flashing, placing the tube in the joint and pulling a buttered brick into place.
For a weep tube to be functional, the interior opening of the tube must be against the mortar collection device, so that mortar droppings will not spatter and clog the tube.
This is a time-proven product that does not offer a downside. The polyester weeps are non-directional and can be utilized with different-sized materials simply by rotating the weep. This weep has a louver that fills the face of the head joint and a tab that extends across the top of the brick, keeping it secure.
Visit www.brickvent.net for a possible solution. They assist in the draining of moisture from the exterior wall. You might start by filling in the weep holes on a temporary basis to see if in fact the water is entering through them. What is the moisture problem that you seem to be having? Whoever placed it there in the first place, were they in the right and who decides where weep holes should be? In my county the are placed every 32″ along the bottom of the brickwork and the initial placement is up to the installing mason.
Do not fill it in until you consult with someone you trust in the building industry. The bricklayer is not putting mortar behind the brick but on top of it. Is this something new or did my builder do something wrong? Could this cause gallons of water to be washed in to a room? But it would not hurt a thing to have a mold test done for your assurance. I won’t have mold test any more because this will break the wall and the seller won’t like it. Is my resolution adequate or do you have another thought? Keep in mind that the purpose of the weep holes is to provide drainage as well. Is there a reason why the mason cannot keep the weep holes and extend them into the stone veneer? I am going to fill in the weep holes as it was a stupid idea from the beginning. The wall has no dirt on either side. But, they should go all the way through the wall if they are going to drain water efficiently. Will this be sufficient for draining any water and also acting as a vent? Could these be where water could be entering? Shouldn’t these weep holes be at the bottom of the windows instead of the top?
The Importance Of Weep Holes
What are weep holes and why do you need them? We explain that for you here including how to keep pests out and why blocking …