Construction
Perlite for Construction
Lightweight Aggregate
Thermal Insulation
Improved Workability
Why Builders Choose Perlite
Perlite is used in construction as a lightweight, expanded aggregate that improves insulation, reduces structural weight, and enhances workability in building materials.
Unlike vermiculite, which is often used for fireproofing and absorbency, perlite is valued for its ability to reduce density, improve mix consistency, and support efficient installation.
From lightweight concrete and plasters to masonry fill and insulation systems, perlite helps deliver durable, efficient building performance.
Perlite is used where lightweight structure, insulation, and mix performance are critical to system efficiency.
Compare perlite vs vermiculite: Perlite vs Vermiculite →
Learn more about perlite applications: Perlite Applications →
Common Applications
Available Formats
- Bulk
- Super sacks
- Bagged (multiple sizes available)
Sizes and Gradations
Different applications require different particle sizes. Whittemore offers a range of perlite grades designed for lightweight performance, insulation, and mix consistency.
Cryogenic
Typical size: ~0.15–1.2 mm
Used in cold-storage construction, refrigerated facilities, and cryogenic infrastructure where stable low-temperature insulation is required. Provides consistent particle distribution for controlled thermal performance in specialized building systems.
Fine
Typical size: ~0.5–1.5 mm
Used in lightweight plasters, masonry fills, and insulating concrete where smooth finish and uniform density are critical.
Medium
Typical size: ~1.5–3 mm
The most common construction grade, ideal for lightweight concrete, roof decks, and general-purpose insulating mixes.
