Facades with moisture
The silicone system prevents wetting while allowing internal moisture to evaporate - reducing the risk of blistering and peeling.
Acrylic vs Silicone-Based Paints
The real difference and when to choose each one
What is an acrylic system
100% acrylic paints are based on acrylic resins with high UV resistance. They offer colour stability, good adhesion, and reliable protection on urban buildings without serious moisture stress.
They are the most common choice for exterior facade painting - more affordable upfront, with a typical lifespan of 5–8 years depending on exposure.
An acrylic system is a reliable solution when the technical assessment shows a stable substrate with no moisture issues.
What is a silicone system
Silicone paints contain silicone resins that provide intense hydrophobicity. Their key property is the "lotus effect" - water forms beads and rolls off without wetting the surface.
They also allow high vapour permeability, exhibit reduced dirt pick-up, and increased resistance in coastal environments. Typical lifespan of 8–15 years with correct application.
Breathability vs hydrophobicity - the critical difference
Both systems are breathable. The critical difference is that silicone repels incoming water while allowing vapour to escape - especially important in demanding environments.
High-rainfall areas
On buildings exposed to frequent rain, hydrophobicity means the surface dries rapidly without absorbing water.
Coastal buildings
Salt air and high humidity stress conventional systems. Silicone protection performs significantly better under these conditions.
Polluted areas
Reduced dirt pick-up on silicone surfaces means the facade stays cleaner for longer.
When to choose acrylic
| Scenario | Why acrylic |
|---|---|
| Stable substrate | No special hydrophobicity required |
| No moisture issues | Acrylic breathability is sufficient |
| Limited budget | Lower upfront material cost |
| Moderate exposure | Reliable 5–8 year solution |
When to choose silicone
Silicone isn't a "luxury option". It's a technical solution for demanding environments - the choice should be based on assessment, not just the price difference.
Coastal area
Salt, high humidity, and UV create combined stress. Silicone protection withstands this combination.
Moisture history
Buildings with past moisture problems need a system that blocks water ingress but lets vapour escape.
Pollution & dust
On busy roads or industrial zones, the silicone surface doesn't attract dirt - staying cleaner much longer.
Longer lifespan
Over a 10-year horizon, a silicone system often proves more cost-effective than two acrylic cycles.
Lifecycle cost comparison
Silicone has a higher upfront cost. However, it reduces the likelihood of repainting, limits water absorption, and maintains a cleaner appearance.
Over a 10-year horizon, the cost comparison changes significantly - the "economical" choice may prove more expensive if it requires early re-intervention.
There is no universally "better" system - there is the right system for each building, based on moisture, exposure, and budget.
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Paints for Building Facades
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