Clearing up what people really think about hollow slab systems
As an innovative slab system that replaces solid concrete with recycled plastic balls, BubbleDeck often sparks curiosity — and a few doubts. Some wonder if it’s strong enough. Others ask if it’s suitable for real-world projects. In this article, we’ll answer the most frequently asked questions and clarify common misconceptions — from engineers, contractors, and everyday clients alike.
1. Is BubbleDeck really strong enough without full concrete?
Yes — and in many ways, it performs better.
The plastic balls replace only the non-structural “dead zones” of concrete — the middle part of the slab that doesn’t contribute to strength. The slab remains fully reinforced, and the load-carrying zones (top and bottom) are untouched.
Engineers will appreciate:
- Slab acts as a 2-way plate, not beam-dependent
- Proven to meet and exceed EN, ACI, and local codes
- Can accommodate long span depending on design and thickness
2. Is it safe in earthquakes or high-load conditions?
Yes — in fact, BubbleDeck can improve seismic performance.
A lighter slab means lower seismic mass, which results in less force transferred to columns and foundations. The slab also behaves monolithically due to cast-in-place connections and offers excellent bidirectional stiffness.
Bonus: The system has been used in seismic zones around the world
3. Can general contractors install it without special training?
Yes — it works with standard CIP practices.
BubbleDeck panels are semi-precast, so contractors lift them into place and then cast the concrete topping and joints on site — just like working with conventional slabs. No post-tensioning, no special equipment, and no learning curve for typical precast installers.
4. Will it limit architectural design or force a “standard layout”?
Not at all — it actually gives more freedom.
Because BubbleDeck allows for longer spans and flat soffits without beams, architects enjoy more flexibility in column placement, room layout, and MEP routing. It’s particularly useful for open plans, slim floor-to-floor heights, and multi-use buildings where space and aesthetics matter.
5. Are the plastic balls flammable or dangerous?
No — they are fully encased in concrete and meet fire rating requirements.
The HDPE balls are completely surrounded by concrete, and don’t affect the slab’s fire resistance. BubbleDeck slabs can meet 2-hour or higher fire ratings, based on project requirements.
6. Can it handle waterproofing for bathrooms or wet areas?
Yes — and it allows for precise drop panels too.
BubbleDeck slabs can be designed with integrated drops for bathrooms, bathtubs, balconies, or wet zones — all cast monolithically. Waterproofing systems work just like with conventional concrete floors. The soffit is smooth and beam-free, making detailing easier.
7. Is it more expensive than traditional slabs?
The slab cost may be similar or slightly higher — but total project cost is often lower.
While the unit rate per square meter may not always be cheaper, BubbleDeck can lead to savings in:
- Foundation size (less weight = fewer piles)
- Beams, column (and other unnecessary structural elements)
- Construction time (faster slab cycle)
- Labor (less rebar, less formwork)
- Height optimization (more usable floors)
8. Is it only suitable for large-scale projects?
Not at all. BubbleDeck works for:
- 🏠 Single homes
- 🏢 Condos and offices
- 🏭 Factories
- 🏥 Hospitals
- 🛒 Retail buildings
- 🛐 Temples and community centers
Its flexibility and lightweight nature make it ideal even for tight urban plots or irregular layouts.
Summary for Everyone
| 💬 Misconception | ✅ Reality |
|---|---|
| Hollow means weak | Structural zones are untouched — strength is maintained |
| Complex to build | Compatible with conventional construction |
| Not for custom homes | Highly adaptable for flexible layouts |
| Risky in earthquakes | Actually improves seismic response |
| Unusual = expensive | Often leads to overall project savings |
| For big projects only | Flexible, good for houses and small projects |
Whether you’re a developer, homeowner, or engineer, it’s normal to have questions about something new. But after decades of use in Europe, Asia, and now Thailand, BubbleDeck has proven to be a smarter, lighter, and safer way to build.
