What happens if there are no weep holes?

What happens if there are no weep holes?

Badness happens when your walls don’t have weep holes. Without weep holes, water has only one place to go – inside your home’s walls, leading to mold, rot, and unpleasant, expensive structural issues.

Do you need weep holes at DPC level?

There isnt normally a cavity tray at dpc level, unless in instances where the likes of a Radon Barrier is required, which should overlap inner wall, cavity and outer wall. You would then need a cavity tray above with weep holes.

Are weep holes necessary?

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 is it important to install a DPC damp proof course )?

The damp-proof course (DPC) is an important element in construction that prevents the penetration and ingress of water into a building.

Do you need weep holes above windows?

Weep holes are typically found in the outer masonry leaf of cavity walls, just above the flashing. 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.

Do I need engineering bricks below DPC?

The regs do not dictate which materials to use in this case, only in foundations. A lot of people prefer to use engineering bricks on a slab for the first two courses under a DPC because of water splashing on them, from slabs, during a rainfall.

Where should weep holes be placed?

Can DPC be above floor level?

Unlike timber suspended floors where the damp proof course will be sited below floor level with solid constructed floors the DPC should always be sited above finished floor level and should be visible.

How high above ground is DPC level?

150 mm
A damp-proof course is a barrier, usually formed by a membrane built into the walls of a property, typically 150 mm above ground level, to prevent damp rising through the walls. Historically, damp-proof courses may have been formed using bitumen, slates, lead, pitch, asphalt or low absorption bricks.

What is the height of DPC and weep holes?

Recently, whilst looking at options for flooring in the area I spotted that the DPC and weep holes are on the slab floor. This area is under the portico which is covered with 450 mm eaves around. The height of the DPC or weep holes must not be less than 150 mm in areas where there is adjacent land (Soil etc…) to protect for ground movement.

What are weep holes?

Weep holes are installed just below the slab height of a dwelling to provide a drainage system to remove any moisture inside the wall cavity. The moisture can safely drain out through the weep holes to protect the internal components of your home from damage.

Do I need weep holes in my bed joint?

Everyone! weep holes are only as good as the flashing that is built into your bed joint to direct water from cavity to outside at the correct hight ,this will change depending on concrete slab rebate size (commonly just below internal floor level). Strip footings do not need weep holes due to flashing at vent level.

How to prevent DPCs in cavity brick walls from sagging?

“Where the stepped DPCs in cavity brick walls bridge the cavity between the two brick skins, there must be a sand or cement fillet in the cavity between the different brick course levels to prevent the DPC membrane from sagging into the cavity.