
Should I seal weep holes in a brick wall?
I would not normally advise sealing weep holes in a brick wall unless you are changing the wall structure, design, insulation and drainage system to a flood-resistant wall that prevents water entry in the first place. We describe that approach
What is a weep hole in a wall?
Weep holes in building exterior masonry walls (brick or stone) are a drainage system that is used in cavity wall or rain-screen wall construction methods to get rid of water that has penetrated the outer wall skin or surface.
Should I cover weep holes when installing a patio?
Thomas Boni Says: If your home still has more weep holes to protect it (other than the ones covered during the patio installation), you should be all right. Weep holes should never be sealed because bricks always hold moisture and store moisture.
How can I prevent pests from entering my home through weep holes?
To prevent insects and other pests from entering your home through the brick weep holes, we can install brick vents or other weep hole inserts which can cover the holes so that nothing can pass through except water. For more information on weep holes and the importance please read this great article here

What happens if you seal weep holes?
Whatever you do, do not fill those weep holes. They're an integral part of the drainage system to keep water from building up behind the brick. If allowed to contact any untreated lumber, this water will cause serious wood rot, mold and, eventually, structural problems with your home.
Can you cover weep holes with dirt?
0:100:58Mulch and Weep Holes - YouTubeYouTubeStart of suggested clipEnd of suggested clipWhen you get out there start doing your yard work you start adding mulch. Make sure you don't coverMoreWhen you get out there start doing your yard work you start adding mulch. Make sure you don't cover up the weep holes. You want to be able to see a little bit of your slab.
Can water enter through weep holes?
This research demonstrated that even under truly extraordinary conditions water rarely enters the weephole and even if it does it cannot be blown high enough up in the cavity to create internal damp problems.
How do you clear a weep hole?
0:171:23How to Clean Your Window Weep Holes - YouTubeYouTubeStart of suggested clipEnd of suggested clipWe take our little hook tool. And we want to get this track out of the way. So we just take thisMoreWe take our little hook tool. And we want to get this track out of the way. So we just take this hook tool lift it up a little bit. And you can see just a little bit of dust and debris inside there.
Can you put steel wool in weep holes?
First, you can use stainless steel wool to plug the holes. This will allow the holes to breath, but keep pests from entering. You will definitely want to change them out a few times per year to avoid any build up or blockage that would prevent breathing.
When did weep holes become code?
Even if you used the code as a basis of the requirement for weep holes, you would be surprised to learn that weep holes were nor mandated in the single family code until 1983 CABO, mandated by the 1985 Kentucky Building Code. Home inspectors are calling out missing weep holed on house built before 1985.
How important are weep holes?
Weep holes are open gaps left between some bricks in external masonry walls. They serve two important purposes: Ventilation of the internal wall cavity - Without ventilation, mildew, dry rot and damp reduce the life of the internal wall studs and other building materials within the cavity.
Why do houses have weep holes?
Weep holes are holes or gaps along the bottom of the brick veneer which allow water to drain out from the wall. These holes also serve to provide ventilation in the air gap behind the brick veneer. Ventilation can help to dry out the interior wall layers after a weather event.
What is the purpose of weep hole?
The weep holes allow wind to create an air stream through the cavity. The stream removes evaporated water from the cavity to the outside. Weep holes are also placed above windows to prevent dry rot of a wooden window frame.
Do all vinyl windows have weep holes?
Weep holes are small openings located at the bottom of the exterior frame of your replacement window. Although not all windows have weep holes you may see them on vinyl or metal window frames. Weep holes aren't just there for looks, they are designed to drain water from your windows.
Should there be weep holes above windows?
They can also be found above windows, doors or other penetrations. They should be provided at regular intervals so as to allow any moisture collected by cavity trays to escape. The recommended distance between weep holes is 450mm.
Do windows need weep holes?
Weep holes are necessary because the vinyl sill is the same shape as the window jambs, so that the tracks holding the window sash collect and contain water when they function as the sill in the lower horizontal frame position. Without weep holes, this water could not drain.
What can I use to cover weep holes?
Small pieces of steel wool (just pull it apart) or pieces of a plastic scrubber can be pushed into the entrance of a weep hole to keep unwanted critters out. Both items will effectively block the weep holes while still allowing air to filter in and water to seep out.
What to put in weep holes to keep mice out?
0:502:12Rodent Proofing Weep Hole on Brick - YouTubeYouTubeStart of suggested clipEnd of suggested clipBecause they won't be able to chew through it you can see we've done done another one here. Using aMoreBecause they won't be able to chew through it you can see we've done done another one here. Using a product excluder. Inside of the weep holes of your brick.
Can mice fit through weep holes?
It's obvious that small pests such as cockroaches and spiders can crawl through weep holes, but vertebrate pests such as lizards, snakes and even mice can also squeeze through a normal weep hole.
Can snakes get into house through weep holes?
Rats, mice and lizards will get in the house thru weep holes, and snakes can go ANYWHERE they can go. Usually they will end up in the attic.
How to prevent weep holes?
So, the best way to prevent this from happening is to block the weepholes with a special material. The material you will use generally depends on the rodents and insects in your area – but in general includes blocking the weep holes with silicone sealants, rolled-up paper, plastic, scourer pads or steel wool. However, the best case scenario is to use a filtration system that allows air to come inside (and water to flow outside) the weep hole.
What Are Weep Holes?
The best way to describe weep holes is as the gaps that are left between some bricks in external masonry walls. Essentially, these holes are important because of these two purposes:
How do weep holes work?
A weep hole is an intentional gap between some of the bricks along the bottom of your brick wall or veneer. These holes are created specifically to prevent something that’s a concern for all brick structures: too much moisture retention.
Why are weep holes bad?
One of the main issues with weep holes is the ease of access that they provide to rodents and insects. From swarming bees to European wasps, snakes, cockroaches and even field mice, they can be the perfect ‘doors’ for rodents looking for warmth.
Can you vent a weep hole in a brick wall?
Even if you have a few weep holes in your home’s brick foundation, it may not be enough ventilation to prevent molding and other issues that come from having continuously wet bricks. To prevent this issue, we may recommend installing additional weep holes.
Can weep holes cause problems?
However, weep holes can cause some problems of their own.
Where are the gaps in brick?
Usually, these gaps are found near the bottom of your house’s brick wall or veneer siding. Often, homeowners find them frustrating, thinking that whoever laid the brick missed a spot when they were filling the brick pattern with mortar.
What are weep holes?
Weep holes are little pockets of holes seen usually at the bottom of buildings that are designed to vent moisture and ensure the integrity of the property .
Why do weep holes exist?
With these weep holes come the issues where rodents and other pest have access to enter the structure of the house.
How long does it take to install a weep cover?
Installing weep covers involves a bit of learning curve if you’ve not done it before. Be prepared to set aside half a day to two days (depending on scale) to get them installed properly.
What is a rip-o-mice weep hole cover?
The Rid-O-Mice Weep Hole cover is built for the outdoors using spring stainless steel to ensures that mice will not be able to chew through or pull them out.
Where to install weep cover?
Tip: Install weep cover from inside the house before moving to the exterior facade of the house.
Can you install a standpipe on a gray PVC?
It’s reversible collar and removable grid plate allows accommodation to different types of tile height and thickness. Installation on existing standpipe is also possible, simply unscrew the upper assembly and mate it to a gray PVC adapter (your plumber will know what to do).
Can you cut mesh?
Note: Cutting of mesh will leave little pieces of copper which should be kept away from pets and kids.
What is a weep hole?
Weep holes provide ventilation as well as drainage. The holes you see lead to an air cavity that lies between the home’s exterior sheathing and the bricks themselves. The cavity is about an inch wide, and the air that naturally flows through the weep holes in brick helps to reduce the moisture level in the air cavity.
Where are weep holes in a wall?
If you look carefully, you might also find weep holes in the mortar joints over doors and windows. Since doors and windows are penetrations into a home’s protective envelope, these areas will also have flashing (even if they don’t have weep holes) to keep water from running down the inside of the wall. Whether or not you’ll find weep holes above doors and windows typically depends on the local building codes in your community. As an added precaution, some masons will install them even if local codes do not require them.
What is a weep hole in a sheathing?
Additionally, the sheathing is covered with a moisture-resistant membrane, sometimes called a vapor barrier, that helps protect it. Both the membrane and the weep holes protect the home’s structure from moisture damage and help ward off potential mold growth.
How do masons make weep holes?
Masons make weep holes via a variety of methods. Some weep holes are created by placing hollow circular tubes at the bottom of a mortar joint and leaving them in place after adding mortar to the rest of the joint . Others are created by temporarily placing an object, such as an oiled rope, at the bottom of the mortar joint ...
How deep are weep holes?
Since standard bricks are 3⅝-inch-wide, and the required air cavity between the sheathing and the wall is one inch, the total depth of weep holes is typically 4⅝ inches.
What are weep holes in brick?
A: It must’ve come as a surprise to see these uniform spaces on the brick house you count on to be solid! 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.
Can snakes get into a weep hole?
Unfortunately, insects —sometimes even mice and snakes —might still be able to gain entry to your home through weep holes. Keep reading to learn more about these essential openings and to find out how you can keep unwanted critters out.
What is a weep hole?
Weep holes in building exterior masonry walls (brick or stone) are a drainage system that is used in cavity wall or rain-screen wall construction methods to get rid of water that has penetrated the outer wall skin or surface.
What to do with 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 do weep openings close?
Closing off weep openings in a masonry wall, presuming that they were properly located, installed, and flashed in the first place, risks trapping wind-blown rain or other water inside the wall cavity, inviting structural damage, rot, or mold contamination.
How far above the brick weep holes did flood water get?
We had flood water get right to, and maybe an inch above the brick weep holes. In one location we had a small section of baseboard damage.
Where is a weep opening in a brick wall?
A weep opening in a brick veneer wall is placed at intervals and at one or more location heights always including the wall bottom and possibly at higher points in the wall depending on how the wall is constructed.
Why does soil wash through retaining walls?
It's common for soil to wash through drain holes in a retaining wall, especially after heavy rains. If the wall has not moved, bulged, cracked, then it sounds as if the drainage openings are doing their job.
Can brick veneer weep holes be ground clearance?
Interesting question. I' ve not seen a ground-clearance specification for brick veneer weep holes. But you're quite right that water entering such openings from the ground could cause building damage.
What is a weep hole?
Weep holes in building exterior masonry walls (brick or stone) are a drainage system that is used in cavity wall or rain-screen wall construction methods to get rid of water that has penetrated the outer wall skin or surface.
Where is a weep opening in a brick wall?
A weep opening in a brick veneer wall is placed at intervals and at one or more location heights always including the wall bottom and possibly at higher points in the wall depending on how the wall is constructed.
Why do weep openings need to be in the cavity?
The purpose of weep openings is to let water out of the veneer wall rather than sending it into the building wall (and possibly floor) structure. That drainage is needed when wind-blown rain (or possibly significant amounts of condensate) in the cavity space between the veneer wall and the exterior sheathing of the wood framed wall behind needs to get out.
What is the flashing in a weep hole?
The weep holes are the water exit; the flashing is the water director.
Why do weep openings close?
Closing off weep openings in a masonry wall, presuming that they were properly located, installed, and flashed in the first place, risks trapping wind-blown rain or other water inside the wall cavity, inviting structural damage, rot, or mold contamination.
What is a wythe in brick?
Definition of wythe or brick wythe. If you look at a brick masonry wall, one brick thickness of the wall is one wythe. A brick veneer wall constructed using full-dimension bricks will be one brick wythe in thickness (of the veneer).
Why does soil wash through retaining walls?
It's common for soil to wash through drain holes in a retaining wall, especially after heavy rains. If the wall has not moved, bulged, cracked, then it sounds as if the drainage openings are doing their job.
