---
title: EXPA 3/8
date: 2026-08-06T14:46:00+02:00
author: Nick Demeyere
canonical_url: "https://www.expa-materials.com/en/products/expa-3-8-mm"
section: Products
---
# EXPA 3/8 - 3/8 mm

A strong, versatile lightweight aggregate for substrates, green roofs, drainage and concrete based products.

- Strong, versatile aggregate for numerous applications.
- Suitable for concrete, green roofs and drainage.
- Lightweight with thermal and acoustic benefits.
- Circular, durable and non-combustible material.

[Contact our teamContact our team](https://www.expa-materials.com/en/contact)

![Garden horticulture](https://www.expa-materials.com/uploads/images/temp/_320xAUTO_crop_center-center_none_ns/garden-horticulture.jpg)

## Download technical sheet

Get all the technical details and performance data of Expa in one comprehensive document.

[Download PDFDownload PDF](https://www.expa-materials.com/uploads/files/temp/EXPA-MATERIALS-Website-copy.pdf)

![downloads](/dist/downloads.png)

## Discover more products

![Expa 0/1](https://www.expa-materials.com/uploads/images/products/_320xAUTO_crop_center-center_none_ns/expa-0-1.jpg)

### EXPA SAND

Ultra-fine lightweight sand for mortars & screeds. Reduces weight while improving thermal and acoustic performance.

![Expa 0/3](https://www.expa-materials.com/uploads/images/products/_320xAUTO_crop_center-center_none_ns/expa-0-3.jpg)

### EXPA 0/3

Fine expanded clay with high resistance and good workability. Ideal for strong lightweight screeds, mortars & insulation concrete blocks.

![Expa 8/16](https://www.expa-materials.com/uploads/images/products/_320xAUTO_crop_center-center_none_ns/expa-8-16.jpg)

### EXPA 8/16

Coarse, ultra-light aggregate that significantly reduces structural loads. Suitable for drainage fills, substrates and lightweight screeds for foundations.

![Expa 16/32](https://www.expa-materials.com/uploads/images/products/_320xAUTO_crop_center-center_none_ns/expa-16-32.jpg)

### EXPA 16/32

Large, lightweight granules developed exclusively for first-stage drainage layers in landscaping, infrastructure and large-scale drainage projects.

![Expa 4/10 BROKEN](https://www.expa-materials.com/uploads/images/products/_320xAUTO_crop_center-center_none_ns/expa-4-10-BROKEN.jpg)

### EXPA BROKEN

Crushed angular aggregate combining low weight with excellent stability & strength. Its rough surface provides strong mechanical interlocking and high hook resistance. Ideal for infrastructure, drainage & concrete blocks.

## Have questions about the 3/8 mm grade?

Reach out to our technical specialists for expert advice.

[Get in touch today!Get in touch today!](https://www.expa-materials.com/en/contact)

![Clay](https://www.expa-materials.com/uploads/images/temp/_320xAUTO_crop_center-center_none_ns/clay.jpg)