
Forms 2 and 3: what comes after backfill
Form 1 is available to pilot today. Forms 2 and 3 extend the same material system into precast tiles and cast formats on the roadmap.
Arash Fallah Tafti
Who should request a SubLay C pilot in Finland, what a pilot pack includes, and how to use the pilot request form.

Yalda Biabany
Head of Commercial

Year 1, SubLay is looking for Finnish infrastructure partners and the civil contractors who place for them. The goal is controlled first placements of SubLay C Form 1: engineered protective backfill around buried reinforced concrete, with a practical monitoring plan on each pilot. We scope pilot packs (material, application guidance, and monitoring) and tonne supply after a successful conversation. Priority sites include aggressive ground on the acid sulfate coast (Ostrobothnia / Oulu region) and other Finnish operating areas where the contact zone matters.

Infrastructure asset owners who bury and maintain reinforced concrete in aggressive ground: pole and mast foundations, building and plant footings, cable and service chambers, agricultural structures (for example silo bases, drainage and storage foundations), and similar buried assets. Coastal, sulfate-bearing or acidic soils, and salt-loaded roadside environments are the problem set Form 1 is built for.
Civil contractors who already dig and backfill those foundations. You do not need a new specialty crew. You need a clear thickness, compaction, and QC note you can run on a normal day.
Durability and geotechnical consultants who write tender specifications can help owners scope a placement; we can share technical context while they review fit.
Good first-pilot traits: Finland, accessible for visits, a low-risk asset (not a critical single-point failure), and a buyer willing to allow monitoring and later anonymised learnings. We qualify every lead; not every enquiry becomes a first placement.
A SubLay C pilot pack is scoped per project. In plain terms it includes:
Material: SubLay C Form 1 for the agreed contact zone, with lot ID and grade (virgin-mineral when the placement needs it).
Application guidance: placement steps, thickness intent, compaction and QC notes your contractor can follow.
Monitoring plan: practical baseline and follow-up (for example lot and thickness records, photos, and optional half-cell or sampling where the buyer allows).
Tonne supply for ongoing Form 1 delivery comes after a successful pilot conversation, with logistics planned around your contractor. Commercial terms are agreed in the quote for your project.
A pilot request is an enquiry, not an order. We review asset type, region, timing, and decision-makers, then propose scope if it fits.
Use the pilot request form. Fill in name, organisation, role, email, and the basics of the asset: type, location, and any timing you already know. Add a short message if you have constraints (winter window, monitoring limits, virgin grade preference).
Consent on the form covers contact about pilots under our privacy notice. After submit you land on a confirmation page; our team reads every enquiry and follows up.
You can also start from the SubLay C product page if you want the placement story and validation table first, then jump to Request a pilot.
If you own or place buried foundations for Finnish infrastructure and want a soil-side protective bed in scope, request a pilot. Tell us the asset, the region, and when the trench opens. We will reply with whether it fits a first controlled placement and what the pack would include.
For how we think about evidence, cost, and the decision after a trial, see A useful pilot connects performance with the owner decision and the wider technical notes on buried concrete durability.
Keep reading

Form 1 is available to pilot today. Forms 2 and 3 extend the same material system into precast tiles and cast formats on the roadmap.
Arash Fallah Tafti

Why SubLay uses ready / in progress / roadmap labels instead of protection percentages, and how to read the validation table.
Mahtab Dehghani
Discussion
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