Technical Library
EPS Geofoam Technical Library
Density guides, block sizing references, installation instructions, and specification articles — everything you need to design and source EPS Geofoam.
Field Guide
EPS Geofoam Installation Guide
EPS Geofoam is one of the fastest fill materials to install — no compaction equipment, no moisture control, and minimal weather sensitivity.
Prepare the Subgrade
Grade the subgrade to design elevation and compact to provide a stable, uniform bearing surface. Remove sharp rocks, debris, and organic material.
Establish Control Lines
Set string lines or laser level references to control alignment, grade, and block course elevations.
Place First Course
Place blocks in the first course with tight joints and correct alignment. Check each block for level and bearing contact with the subgrade.
Stagger Joints Between Courses
Each successive course must have joints offset from the course below by a minimum of 12 inches (24 inches preferred).
Cut Blocks as Needed
Use a hot wire cutter, reciprocating saw, or chainsaw to cut blocks for corners, transitions, and irregular geometries.
Install Connectors if Required
In areas with potential uplift or sloped fills, install barbed plastic connectors or apply water-based adhesive between block courses.
Place Protective Cover Promptly
Install the concrete load distribution slab, geomembrane, or compacted soil cover as soon as possible after block placement.
Important Cautions
- Never allow vehicles to drive directly on unprotected geofoam
- Keep all hydrocarbon sources (fuel, oil, solvents) away from geofoam
- Do not use solvent-based adhesives — they dissolve EPS
- Protect from open flames and prolonged UV exposure
- Install protective cover before end of each work day
Always follow project-specific installation specifications and consult your supplier for guidance.
Technical Articles
Specification guides, design references, and application notes
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