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Lintel Weep Vents

Original price £10.00 - Original price £100.00
Original price
£10.00 - £100.00
Current price £10.00

Price includes VAT

Product Availability

Catnic Lintel Weep Vents

The corrugated design means Catnic Weep Vents are suitable for all Cavity Lintels. 

The Vents will create Weep Holes which will Discharge Water away from your Lintel & Wall.

Weep Hole Vents Key Features

  • Multi Packs 
  • Corrugated Design
  • Assist in Draining Condensation and Water 
  • BS Polypropylene
  • Choice of Colours 
  • Meets NHBC Standards 
  • Download Datasheet

Find out more about installation here.

 Browse Catnic Lintels


Weep holes and lintels are two crucial partners in keeping your construction healthy and dry, especially when it comes to cavity walls and openings like windows and doors. 

These vents are small, strategically placed openings that allow moisture to escape from the cavity wall. They act like tiny drains, preventing water buildup that can lead to dampness, mold, and structural damage. 

How Do Weep Vents Help?

The role of weep vents in this context is crucial:

Moisture Management: The primary function of these vents is to allow water that has entered the cavity, either from outside through the outer wall or as condensation within the cavity, to escape. This helps in preventing damp issues in the inner wall.

Ventilation: Vents, as the name suggests, also allow air to circulate within the cavity, which helps in drying out any moisture that has accumulated and reduces the risk of mold and structural damage.

Pressure Equalisation: In some designs, the weep vents help in equalising pressure between the cavity and the external environment, which can aid in preventing water from being driven into the cavity by wind pressure.


Frequently Asked Questions

What if I forget to install weep vents?

If you neglect to install a venting system you could cause a lot of long-term damage to your construction. Some issues would be moisture accumulation, mold growth, wall damage from trapped moisture, frost damage (again, from trapped moisture), and reduced insulation efficiency.

How many weep holes do I need?

The number required depends on the building regulations and standards in your area. Generally, they are placed at regular intervals – typically every 2.5 to 3 feet along the base of a wall.

Where should weep vents be installed?

They are usually installed in the external walls at the base of the brick course, above windows, doors, and lintels, and at any other points where water might collect within the wall cavity.

Can weep holes be retrofitted to an existing wall?

Yes, it's possible to retrofit vents into an existing wall, but it should be done carefully to avoid structural damage.

How do weep holes impact the building's energy efficiency?

Properly installed weep vents should not significantly impact energy efficiency. Their main purpose is moisture control, and they are designed to minimise air flow that could affect insulation performance.


Catnic's weep vents are made from polypropylene, and meets all the requirements for NHBC standards. 

N.B. Cavity weep holes should be provided over all lintels fitted with stop ends or separate DPC tray supplied by other manufacturers.

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