Forms 2 and 3: what comes after backfill

SubLay C is one material system in three delivery forms. Today, Form 1 is the backfill you can pilot: engineered protective material placed and compacted in the trench. Forms 2 and 3 are later ways to put the same idea against buried concrete.

That order matters. We want a clear backfill placement story before we open precast or cast supply.

Form 1 first

SubLay C Form 1 is loose mineral protective bedding for poles, foundations, chambers, and other buried elements. You replace ion-contaminated soil next to the structure with a designed bed, keep the mix design, and run thickness and QC like other foundation work.

Finnish electricity distribution foundations are the first focus. Pilots and tonne supply conversations start there. Road and bridge use cases can follow when the evidence and delivery story are ready for them.

If you only read one line from this article: pilot Form 1 now; treat Forms 2 and 3 as later options from the same system.

What Form 2 is for

SubLay C Form 2 is precast biscuit / mosaic tiles from the same material system. The job is a structured contact layer: tiles that can build a more controlled interface where loose backfill is not the best fit for the design or the site method.

Form 2 is marked coming soon on the product page. It is not open for pilot yet. The product page shows it so you can see the full family, not because tiles are on offer today.

What Form 3 is for

SubLay C Form 3 is cast use of the material system: a poured protective layer where that format fits the design better than loose bedding or precast tiles.

Same idea as Form 2: same chemistry, different delivery. Form 3 is later. Form 1 carries placement, supply, and evidence work while those formats are in development.

Reading the roadmap

Roadmaps without ship dates still help buyers. You can see that SubLay C is not only a bag of backfill, and you can see which formats are not for sale yet. Forms 2 and 3 are described on the product page as coming later; when one moves to available, the delivery section and validation table are updated there first.

Until then, Form 1 covers pilots and supply: pilot packs (material, application guidance, monitoring plan) and tonne delivery after a successful pilot conversation.

How to engage today

If your buried asset needs a soil-side protective bed on an upcoming foundation day, start with Form 1. Read What is SubLay C? for the full plain-language intro, or go straight to request a pilot.

If you already know a precast or cast contact layer would fit your design better than backfill, mention it in the pilot message so we can note the interest for when those formats open.

One material system. Three delivery forms. Form 1 first.