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Production of pumice from the quarry working faceStock pile of 10-14mm crushed and graded pumice secondoNatural volcanic pumice in road cutting Tuscany - ItalyPumice being despatched from the quarry for Horticultural usePhoto-micrograph of pumice showing sponge like structure - Field of view approx 5mm
Pumice - Horticultural Gravel
Product Code: 7812

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Pumice Horticultural Gravel - A general purpose crushed and graded pumice. Use specifically as a substrate for extensive light weight green roofs and horticultural applications requiring good drainage together with moisture retention.

Pack Size: 8kg

Stone Size: Approx. 6-14mm

Stone Density: Depending on moisture content stone density is approximately 700kg per m3 . The product is supplied with a natural moisture content.

Stone Colour: Beige / Light Brown

Coverage: 8kg of 10-14mm pumice will cover approximately 3/4m2 at 20mm depth.

Pumice is a 100% natural light weight bubbly volcanic glass - essentially a "solid rock foam".

Being a natural product pumice contains no harmful substances, it is inert with pH of around 8.0. Pumice is resistant to frost and chemicals, and will not break down in water. It is also non-combustible and has excellent sound and thermal insulation properties.

Product's Principal Application: Extensive Green Roofs and Horticulture:

Pumice is unique within the range of light weight aggregates. Whilst it has an open honeycomb structure similar to Lightweight Expanded Clay and Lytag® the individual pumice particles don't have an outer "ceramic" shell. This property allows pumice to readily absorb moisture during periods of rainfall, but also allows the moisture to be released during dry spells.

The free draining open structure of this pumice prevents water-logging and allows aeration and effective plant root development, making this is the product of choice for extensive green roofs.

This pumice may also be used for interior planting schemes in offices and shopping malls where its moisture retentive properties allow for less maintenance of free standing planters.

Other Applications for this Product Include:

The production of lightweight concrete, being light weight and non-combustible it is especially useful for the creation of theme park, film and theatre sets.

Due to its colour we would not recommend this pumice in potpourri mixes.

Safety Information: This is a commercial / industrial product and not a toy.

Specialist Aggregates' Price Promise:
All prices shown include UK VAT and delivery to mainland locations in England, Wales and Southern Scotland - There are no hidden charges on checkout.

We export throughout Europe and Worldwide - please enquire for shipping rates

Rocks in a Box™ For protection and security your product will be shipped in a weatherproof pack within our easy-to-handle double walled cardboard box.

Boxes are delivered by national couriers. Please advise during checkout or contact our office if you have specific delivery requirements or concerns.

Both the inner plastic pack and the outer box can be recycled via normal household or industrial/commercial collections.

Architect Specify: Pumice Horticultural Gravel from Specialist Aggregates

Product code: 7812

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