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5 Reasons Why More Engineers Don’t Use ‘Ordinary’ Hollow Blocks Anymore in Visayas Region
Let me save you years of expensive repairs and quiet regrets. In the Visayas Region, engineers have seen the same pattern.Walls that look fine on turnover, and then a few rainy and summer seasons, hairline cracks start to show. The next thing you know? Repairs cost more than the “savings.” Ordinary hollow blocks don’t fail instantly, they fail slowly.Here’s why engineers don’t trust them anymore—and what works instead.

1. I Worry About Flood Water Risks
Normal hollow blocks fail slowly with low cement content that creates pores where floodwater seeps in and stays trapped.Over time, moisture weakens the wall and accelerates steel corrosion.Damasco Hollow Blocks are produced differently with up to 40% higher cement content, they form a denser structure. They absorb less water than normal hollow blocks.Less water inside means less internal damage.
So after every rainy season, your walls stay solid.

2. Surprise Cracks Formations a Year or Two After Turnover
What ruins a nicely painted wall? Crack lines.
Low cement content in ordinary hollow blocks create weak bonding on tension points.As moisture enters and heats up during summer, micro-movement occur. Hairline cracks appear and then spread.Damasco Hollow Blocks reduce that risk with higher cement content that creates a tighter internal bond and higher compressive strength.This limits movement under load and during wet and sunny cycles.

3. Highly Recommended by Engineers for Durability
Normal hollow blocks may pass visually, but typically fall in the 250 psi strength range.
That leaves little margin once loads, moisture, and wall movement compound over time.Damasco Hollow Blocks perform differently.
With 350+ psi compressive strength, CHB stays stable through years of stress.Engineers choose Damasco CHB to prevent delayed cracks, corrosion, and costly structural fixes later on.

4. Construction Projects Are Actually Saving More
Damasco hollow blocks can cost ₱0.50 more per piece, so if a builder buys 1,000 normal hollow blocks at ₱20 each, choosing this cheaper option saves ₱500. That's 25 blocks more.But in reality, during delivery, unloading, and laying, these cheaper hollow blocks crack more easily due to weaker internal bonding and lower cement content.If more than 25 pieces break, the initial savings are gone. Engineers allocate up to 8% to breakage, but you can expect less than 4% with Damasco hollow blocks with their higher psi levels.

5. Lower Maintenance
Normal hollow blocks can demand patching and repainting within 2–3 years.Low cement content allows moisture to penetrate, causing cracks and surface flaking. Each repair looks small—until costs stack up.Damasco Hollow Blocks change the math with up to 40% higher cement content and less water absorption, walls stay stable longer.That means fewer cracks, fewer repaints, and lower maintenance for years to come.
If it’s peace of mind you are after, you decide it at the hollow block stage. Damasco hollow blocks aren’t upgrades, they’re now the baseline.Damasco Marketing and Hollow Blocks is a supplier of high-quality concrete hollow blocks in Iloilo. If you have a construction project for: residential homes, apartments, warehouses, or commercial spaces, they have you covered.

Damasco Marketing and Hollow Blocks
📞 329-6458 / 329-6461
📱 0920-9168812 / 0917 317 6436
📧 [email protected]FREE Delivery in Pavia, Iloilo
7 Costly Hollow Block Mistakes Builders in Iloilo Still Make
You’re standing on a construction site in Iloilo. Blocks stacked neatly. Workers moving fast. The project looks good on paper. The supplier says, “Same-same lang ‘yan. Pareho lang itsura.”So you approve it. Months later, hairline cracks show. Then water seepage. Then a client call you don’t want to answer.You didn’t pay for the hollow blocks. You paid for the promise of “pwede na.”

Highest Structure Confidence
[Photo of building shoulder another collapse neighboring structure] You’re standing on a construction site in Iloilo. Blocks stacked neatly. Workers moving fast. The project looks good on paper. The supplier says, “Same-same lang ‘yan. Pareho lang itsura.”So you approve it. Months later, hairline cracks show. Then water seepage. Then a client call you don’t want to answer.You didn’t pay for the hollow blocks. You paid for the promise of “pwede na.”

Load Bearing Walls for future builds
[Photo of building shoulder another collapse neighboring structure] You’re standing on a construction site in Iloilo. Blocks stacked neatly. Workers moving fast. The project looks good on paper. The supplier says, “Same-same lang ‘yan. Pareho lang itsura.”So you approve it. Months later, hairline cracks show. Then water seepage. Then a client call you don’t want to answer.You didn’t pay for the hollow blocks. You paid for the promise of “pwede na.”

ROI on Repairs
[Photo of building shoulder another collapse neighboring structure] You’re standing on a construction site in Iloilo. Blocks stacked neatly. Workers moving fast. The project looks good on paper. The supplier says, “Same-same lang ‘yan. Pareho lang itsura.”So you approve it. Months later, hairline cracks show. Then water seepage. Then a client call you don’t want to answer.You didn’t pay for the hollow blocks. You paid for the promise of “pwede na.”
Damasco Marketing and Hollow Blocks
📞 329-6458 / 329-6461
📱 0920-9168812 / 0917 317 6436
📧 [email protected]FREE Delivery in Pavia, Iloilo
January 31, 2026
[Writer Name]
But let’s be honest.
How long does “pwede na” really last? Does the wall actually hold under load?Under wind? Under earthquakes?
Why strong buildings don’t start with cheap blocks
How long does “pwede na” really last? Does the wall actually hold under load?Under wind? Under earthquakes?You’ve noticed it.Well-built homes and commercial buildings don’t crack early.Not because the labor was perfect. Not because the owner was lucky.But because the right block was used from day one. Concrete hollow blocks are not just blocks.
They are designed to become part of the structure.Steel goes inside. Concrete fills the core. Everything locks together.That’s the difference.
Normal hollow blocks look the same.
But they don’t work the same, normal hollow blocks are made to divide space. Not to carry weight. Not to resist lateral movement. Not to survive long-term stress.They’re fine for:Interior partitions, Non load-bearing walls, Low-risk applicationsThey are not built for:Two-storey homes, Exterior walls, Perimeter walls, Commercial buildingsUsing them structurally is where problems start.
What “cheap” hollow blocks don’t tell you
Suppliers sell blocks. Builders carry the blame. Here’s what often gets left out:They crack under load, normal blocks aren’t meant to support upper floors. Stress shows fast.They fail faster outdoors, rain, humidity, strong winds.Iloilo weather exposes weak masonry quickly.They have zero margin for error: Miss one bar. Poor curing. Weak mortar...The wall pays the price.They cost more in the long run with repairs or reinforcement retrofits. Client dissatisfaction.The savings disappear.
This matters even more in Western Visayas regions
You’re not building in a controlled environment.You deal with Seismic activity, Strong seasonal winds, Heavy rainfall, and Inconsistent site conditions.Concrete hollow blocks gives you:• Better earthquake resistance when reinforced• Stronger exterior wall performance• Lower moisture-related failures• Fewer callbacks after turnoverThat’s not marketing. That’s site reality.
Builders don’t lose money on materials
They lose money on mistakes. Cracks don’t just damage walls. They damage trust.Clients don’t ask: “What block did you use?”They ask: “Why is my wall cracking?”Your reputation takes the hit.
The solution: Concrete hollow blocks, used properly
At Damasco Marketing and Hollow Blocks, concrete hollow blocks are built for real structures.Not for display. Not for shortcuts.They are made to accept steel reinforcement, be fully concrete-filled, handle load, wind, and movement last beyond turnover.This is why concrete hollow blocks are the standard for two-storey homes, exterior walls, perimeter fences, commercial buildings.They don’t just look strong, they become strong.
The real upgrade isn’t price
Take a guess – which hollow block below will cost you more?
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