Product Range
Available Profiles
Click on profiles to expand
These profiles are also available for 15mm cavities.
Vented Cavity Profiles
When render cracks,
the cavity keeps water out.
Sysclad's drained and ventilated cavity systems act as a second line of defence behind your render — letting the wall breathe, draining any water that gets in, and preventing moisture from ever reaching the structure.
BRE recommended
Galvanised steel DX51 Z275
Horizontal & vertical airflow
If interested in our Vented Cavity Boxes, please click 'Get a Quote'
Why it matters
No render system is permanently watertight.
The cavity is what protects you when it isn't.
Render cracks over time — from thermal movement, settlement, or impact. Without a drained cavity behind it, water that penetrates those cracks has nowhere to go except into the wall construction. A properly designed cavity intercepts that water, drains it away, and allows the wall to dry out through ventilation — preventing dampness, mould, and long-term structural damage.
How it works
Three things the cavity does
Drains water away
Any rainwater that penetrates the render is intercepted by the cavity and drained down and out — away from the structure below.
Ventilates the wall
Top hat sections create horizontal and vertical airflow behind the render, allowing the wall to breathe and moisture to evaporate.
Protects the structure
By keeping moisture out of the wall construction, the cavity preserves structural integrity and reduces the risk of mould and dampness.
Components
Everything needed to complete the system
Top hat sections
The primary cavity former — creates the drained and ventilated space behind the render.
Vented corner post
One-piece corner post ensures ventilation is maintained at external corners without compromise.
Vented base rail
Provides a secure, ventilated base for the system at low level — available as an optional extra.
Industry backing
Recommended by BRE
The Building Research Establishment recommends drained and ventilated cavity systems as best practice for moisture management in rendered facades. Sysclad's system is designed to meet those recommendations — giving specifiers and building owners confidence that the approach is technically sound and independently validated.