Technical articles
Expanded clay or natural pumice? The difference in three numbers
Both are light and both get called pumice, but one comes out of a kiln and the other out of a quarry. The real difference is repeatability.
6 min read
News & insights
News & technical insights
Engineering notes, material selection guidance and production updates.
Technical articles
Sloped screeds: how many cubic metres per hundred square metres?
The commonest ordering mistake is multiplying area by the minimum thickness. A fall is a wedge, not a slab of even depth.
5 min read
Technical articles
Lightweight concrete mix design: four recurring mistakes
Most lightweight concrete problems on site start in the mix design, not in the aggregate.
7 min read
Technical articles
What sets the price of expanded clay aggregate? Five factors
No producer can give you one flat number, and anyone who does has probably buried something in the invoice.
5 min read
Technical articles
Infill lightweight concrete: which grade, which strength
An infill is not structural concrete. The commonest mistake is treating it as if it were, and the result is more weight rather than more strength.
6 min read
Technical articles
Choosing a fraction: one simple trade-off
The coarser the fraction, the lighter and the weaker. Grade selection is very nearly that one sentence.
5 min read
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