# What is the carbon footprint of an FRP fibreglass boat?

Canonical: https://senseible.earth/answers/frp-fibreglass-boat-carbon-footprint

Glass fibre and polyester or epoxy resin make up most of it, counted by weight bought including offcuts and resin waste. Styrene vapour from open moulding is a health issue, not a greenhouse gas. Add mould shop electricity, then the engine as a separate bought part.

## Materials

- Glass fibre mat and roving.
- Resin, gelcoat and catalyst.
- Core materials, fittings and paint.

## Use

For a powered boat, fuel burned over its life is often larger than building it. Report it separately if a buyer asks.

## What Senseible does here

Senseible reads your electricity bills, fuel invoices and purchase invoices into dated, fingerprinted records, so a per unit footprint can be traced back to the documents behind it. Estimates are labelled as estimates.

- [Glass fibre furnace CO2](https://senseible.earth/answers/glass-fibre-furnace-co2-per-tonne)
- [Epoxy resin footprint](https://senseible.earth/answers/epoxy-resin-carbon-footprint-per-kg)
- [Fishing vessel fuel](https://senseible.earth/answers/fishing-vessel-fuel-emissions-per-tonne-catch)

Sources: [GHG Protocol Product Standard](https://ghgprotocol.org/standards), [ISO 14067:2018, Carbon footprint of products (iso.org)](https://www.iso.org), [GHG Protocol Corporate Value Chain (Scope 3) Standard](https://ghgprotocol.org/corporate-value-chain-scope-3-standard)

Last reviewed 2026-10-22.