Stronghold ICF - FD Series
The Benefits of Stronghold ICF Folding Blocks
Stronghold ICF’s folding blocks are designed for efficiency, convenience, and cost savings while maintaining the superior strength and insulation benefits of insulated concrete forms. Here’s why builders love them:
Efficient Storage & Transport – Folding ICF blocks lay flat, allowing for 50% more blocks per truckload, reducing shipping costs and job site clutter.
Easy & Fast Installation – The pre-formed hinges allow for quick unfolding and stacking, making setup faster and more efficient than traditional rigid blocks.
Less Job Site Waste – With a compact design, there’s less packaging waste and fewer cut-offs, keeping your worksite cleaner and more cost-effective.
Durable & Strong – Made from high-quality EPS foam, Stronghold ICF blocks provide excellent insulation, soundproofing, and resilience against extreme weather.
Space-Saving Storage – Contractors can store more blocks on-site without taking up excessive space, improving organization and workflow.
Stronghold ICF’s folding blocks make ICF construction easier, more cost-effective, and more efficient. Build smarter with Stronghold ICF!

FD Series Block Types and Sizes
FD Straight Block
Straight blocks, sometimes referred to as standard blocks, make up between 75%-85% of a typical ICF project.
FD-Series 90° Corner Block
90° Corner blocks make up between 10%-20% of a typical ICF project.
Find out more about the Stronghold ICF FX Series Fixed Web Blocks - available now!
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