Metakaolin — High Reactivity White Pozzolan
Allzone Trading supplies metakaolin to cast stone producers, GFRC fabricators, terrazzo manufacturers and dry mortar formulators across Canada. Metakaolin gives much of the pozzolanic benefit of silica fume while staying light in colour, which makes it the standard choice for white and pigmented architectural products. Reactivity, brightness and particle size are confirmed against supplier technical data at quotation.
At a glance
- Product
- Metakaolin
- Grades
- Confirmed at quotation
- Typical applications
- White and pigmented cast stone and architectural precast · GFRC mixes where colour must stay light · Terrazzo and engineered surface production
- Packaging
- Packaging and pack size confirmed at quotation against the grade supplied
- • Certificate of Analysis is provided against the confirmed shipment, grade and batch.
- • Manufacturer TDS and SDS are subject to grade and supplier confirmation and are available on request.
- • Grades, packaging and origin above are indicative sourcing options and are confirmed at quotation.
Available grades from container-direct sourcing
Typical applications
- White and pigmented cast stone and architectural precast
- GFRC mixes where colour must stay light
- Terrazzo and engineered surface production
- Efflorescence reduction in decorative concrete
- Repair mortars and tile adhesives
- High performance concrete where colour is specified
Why Canadian buyers choose us
- Enquiries handled against your part, mould and process — not a fixed stock list
- Grade, working properties and mix data confirmed in writing before order confirmation
- Supplier technical data sheet and safety data sheet provided for the grade actually offered
- LTL and FTL freight to studios, precast plants, fabricators and distributors across Ontario, Quebec and Western Canada
- Quantities reviewed per enquiry, from trial kits through to pallet and container programmes
Typical industries served
Material identity
Metakaolin — identifiers and the names buyers use
- Material type
- Calcined kaolin clay used as a pozzolanic addition
Also searched as
Industry terminology
Identifiers are published for material identification. The exact specification of any offered grade is confirmed against supplier documentation at quotation.
Buyer intent coverage
Metakaolin — what it is, where it is used, how it is chosen
Metakaolin is the pozzolan of choice for architectural work because it does what silica fume does for durability without darkening the mix. Cast stone and white architectural precast producers in Canada use it to refine the matrix and to help control efflorescence, which is the most common visual complaint against installed cast stone. It is a mix-design decision rather than a commodity purchase, and it is trialled before it is adopted.
Primary uses
- Pozzolanic reaction
- Efflorescence control
- Whiteness preservation in architectural mixes
Applications
- White and pigmented architectural precast
- GFRC matrices where whiteness must be preserved
- Efflorescence-sensitive exposed units
- High-performance repair and restoration mortars
Advantages
- Refines the matrix and contributes to durability without the colour penalty of grey pozzolans
- Widely used to help control efflorescence in visible architectural cast stone
- Compatible with white cement systems where appearance governs the mix
Limitations to consider
- Increases water demand, so admixture rebalancing is part of adopting it
- Effect on efflorescence depends on the whole mix, curing and site conditions rather than the addition alone
- Reactivity and contribution are product-specific and established through your own trial batches
- Dosage, addition rate, water content and binder proportions are decided by your own mix design and trial batches, not by a catalogue figure. Supplier literature ranges are a starting point for that development work and are not reproduced here as a specification.
- Decorative and architectural work is judged by eye. Colour, gloss, texture and translucency shift with batch, substrate, dosage and finishing method, so approve a physical sample panel made by your own process before a production run and keep it as the reference for later deliveries.
- Mix ratio, pot life, working time, demould time, full-cure schedule, hardness, tear strength, elongation, shrinkage, viscosity and temperature resistance are properties of one specific supplier system. They are never quoted here from memory or by analogy with a similar product; they are read from the supplier data sheet for the exact material offered and confirmed at quotation.
How to choose the right grade
- Start from the element being produced and the specification it has to satisfy, because binder, aggregate and admixture choices are decided together rather than one at a time
- State the placing method — poured, vibrated, sprayed or pressed — since rheology requirements follow from it
- Describe the curing regime and the plant conditions, including whether production continues through a Canadian winter
- State that appearance is part of the requirement so a white pozzolan route is quoted
- Plan trial panels and curing under production conditions before committing the mix
- Mould-making and casting behaviour depends on the pattern, the shop temperature and humidity, the mixing method and the operator. A production-representative trial on your own pattern and in your own shop conditions is the only honest way to qualify a material before a run is committed.
- Exact specification is confirmed against supplier documentation at quotation.
Typical grades
- Products the supplier classifies by fineness and reactivity
- Products intended for architectural and white cement systems
- Buyers search this category by grade name, and those names describe what the workshop needs rather than what is asserted here. Which grade a specific offer corresponds to, and what the supplier declares for it, is read from the technical documentation issued for the exact material quoted.
- Materials in this category interact: rubbers, releases, sealers, resins, pigments and fillers can inhibit cure, stain a surface or shorten mould life when they are combined outside the combinations the supplier has tested. State every material already in the process at enquiry so compatibility is checked against supplier documentation rather than discovered on the shop floor.
- Reactive materials age in the container, and moisture-sensitive systems age faster once opened. Order against real consumption rather than against a discount, and confirm the shelf life the supplier states for the exact product and pack.
Comparable materials — how Metakaolin sits against alternatives
- Silica fume where colour is not a constraint
- Fly ash or GGBFS where cost dominates
- Shops looking for an alternative, replacement or second-source supplier should state the incumbent product, the supplier system currently approved and the property being matched. Equivalence on family name alone is not equivalence in production: cure profile, surface behaviour, colour and release characteristics all shift between sources, so a side-by-side trial is planned before a changeover.
Comparable-material reference. Grade selection is confirmed at RFQ against your process.
Procurement coverage
How to specify, order and receive Metakaolin
Written for procurement, quality and technical buyers in Canada and the United States. No numeric price, MOQ, stock or lead-time value is published — those are confirmed per shipment in the quotation and against the confirmed batch.
How buyers specify at RFQ
- The exact product identity and supplier system the shop needs, including the component set for a multi-part system
- The process it will be used in, and the equipment used to mix, pour, spray or apply it
- The pattern, mould or substrate it will contact, and every other material already in that process
- The properties the supplier must declare on the data sheet for your application
- The documentation set required before the material can enter production
- Exact specification is confirmed against supplier documentation at quotation.
Packaging options (industry-standard)
- Bag formats are the usual option for powders and dry blends
- Bulk bag (FIBC) formats are used by producers running continuous volume
- Smaller pails or boxes are used where the material is dosed in small quantities
- Packaging options and available pack sizes are confirmed with each quotation.
Storage & handling
- Store sealed, dry and off the floor; humidity swings change the behaviour of powders and dry blends
- Segregate from incompatible chemistry and protect from contamination by other powders in the shop
- Control dust at transfer points in line with the safety data sheet for the product
- Rotate stock by receipt date and record the lot used against each production batch
- Canadian winter transport and storage matter here: several materials in this category thicken, crystallise, freeze or lose performance at low temperature, and recovery behaviour after freezing is product-specific. Confirm cold-weather handling and shop conditioning guidance against the supplier documentation before a winter delivery.
- This category includes reactive chemistry, respirable mineral dust, peroxides and solvent-borne products. Ventilation, personal protection, segregated storage and disposal requirements come from the safety data sheet for the exact product and from the requirements of the provincial regulator for your site.
Documentation available
- Technical data sheet (TDS) for the exact product offered, stating working properties as the supplier declares them
- Safety data sheet (SDS) in the format required for Canadian import, in English and French where the receiving site requires it
- Certificate of analysis (COA) or batch documentation where the supplier issues it for the confirmed lot
- Handling, mixing and storage instructions issued by the supplier for the exact system
- Test reports or conformity statements where the project specification requires them and the supplier issues them
- Documentation is confirmed per batch at quotation; availability depends on the grade and supplier offered.
- Ask for the documentation pack against the exact product at the enquiry stage rather than after the order. Documentation availability differs by supplier and by manufacturing site, and in this category the data sheet is the only place where the working properties of a system are legitimately stated.
RFQ checklist for metakaolin-canada
Include these fields to receive an accurate Canada-landed quotation
- The exact product or supplier system required, and the incumbent it is replacing where there is one
- The process, equipment and shop conditions the material will be used in
- Volume per order and expected annual usage, so the offer is built on real consumption
- Pack format your shop or plant can physically receive and handle
- Documentation required before the material can be used in production
- Delivery province or receiving location in Canada
- The mix design the material enters, and the role it plays in that mix
- The element produced and the specification or project requirement it is built to
- Consumption per batch and expected annual volume, so bulk versus bagged supply can be compared
- Landed cost in Canada is driven by pack format, delivery province and receiving arrangements as much as by unit price, and dense mineral products and dilute liquids both carry weight that is not function. Quotations are compared delivered to your shop or plant rather than ex-works.
Technical & procurement detail
The colour-safe pozzolan+
Silica fume works but darkens the mix; fly ash works but carries colour variability. Metakaolin is used where the specification is a light or pigmented finish and the producer still wants the density, strength and permeability benefits of a reactive pozzolan.
Efflorescence and durability+
By consuming free calcium hydroxide, metakaolin reduces the leachable material that drives efflorescence on decorative units. Producers who fight white bloom on dark pigmented products often address the binder system before they change pigment or sealer.
Not all calcined clay is metakaolin+
Reactivity depends on the source clay and the calcination process, and material sold loosely as calcined clay can be far less reactive. Grades are qualified on reactivity data and trial performance rather than on the name alone.
Specification options+
Working properties are configurable options within this canonical product, not separate products. Depending on the family, that can include grade, viscosity, mix ratio, pot life and demould time, hardness, colour, particle size or fibre length, and pack format. No configuration is presented as stocked or approved until it is confirmed against the supplier's technical data for the exact material offered. Supplier grade names, factory codes and manufacturer brands are not published here.
What to include in your enquiry+
Tell us the product being produced, whether the mix is white or pigmented, monthly tonnage and delivery location.
Frequently asked questions
Can metakaolin replace silica fume?+
It is used for similar reasons but behaves differently in water demand and colour, so substitution is validated by mix trial rather than assumed.
Is brightness data available?+
Brightness and reactivity figures come from the supplier's technical data for the grade offered and are provided with the quotation.
Are technical documents provided before ordering?+
Yes. The supplier technical data sheet and safety data sheet for the exact grade offered are provided with the quotation, and the working properties in those documents govern — not any general description on this page.
What quantities are quoted?+
Quantities are reviewed per enquiry, from trial quantities through to pallet and full container programmes for production users and distributors.
Technical knowledge for Metakaolin Supplier — Canada
Engineering and purchasing guidance written for this material — understand it, apply it, compare options, specify a grade, and fix production problems.
Comparison Articles
Related products
Materials commonly quoted alongside Metakaolin by the same plants.
White Portland Cement
Cast stone and architectural precast units
Calcium Aluminate Cement
Rapid-set repair mortars and patching compounds
Silica Fume (Microsilica)
Anti-caking and free-flow agent — gFRC mixes for improved density and reduced permeability
Need a quote on Metakaolin?
Request pricing, TDS/SDS and available documentation. We usually acknowledge enquiries within one business day; samples are subject to supplier availability and product classification.