ETICS (external insulation with render) is the first option most people hear about, but ventilated facades offer different advantages for moisture, fire safety and lifespan. We compare both.
The first solution most building owners hear for insulation is ETICS: insulation boards glued to the wall and finished with render. For commercial buildings, tall buildings and long-life projects, however, a ventilated facade is often the better investment.
How the two systems work
ETICS: insulation boards are bonded and anchored, then meshed and rendered — a single bonded layer.
Ventilated facade: insulation is fixed to the wall, an air gap is left, and composite, metal, ceramic or HPL cladding is hung on a substructure. Natural airflow removes moisture.
Comparison
| Criterion | ETICS | Ventilated facade |
|---|---|---|
| Insulation | Good | Very good (insulation stays dry) |
| Moisture | Risk if poorly installed | Air gap removes moisture |
| Fire safety | Risk with EPS; use stone wool | High with stone wool + A1/A2 cladding |
| Impact resistance | Low | High |
| Lifespan | 15–25 years | 30+ years |
| Initial cost | Lower | Higher |
Which to choose?
- Low-rise homes on a tight budget: quality ETICS with stone wool.
- Commercial buildings and factories: ventilated facade for durability and image.
- Tall buildings and coastal sites: ventilated facade with non-combustible materials.
Over a 20–30 year horizon the ventilated facade often wins on total cost. See our Exterior Cladding page.
Get expert advice for your project
Let’s assess whether the systems described here suit your building, with a free site survey.
