---
title: "You can make concrete that is effectively impermeable.  They make..."
date: 2025-09-22
source: facebook
type: comment
context: "Appalachian Wood Homestead's reel"
fb_link: "https://www.facebook.com/dyi/l/?l=AYP3kG6DLYAS9_knPdIopYMXIC-4KGQMDK6wai8gegeS1OBtARdGGUB8xOvAgJAIi8NemkO5a19TCkwK0jl8ie2Q--tzOD8ZSNGLMvNRuFTbfMu2zsxxoWyOgTWaVNnYQ1Av6H3iOfb4HuahEEeIC4VfgCFCcvCVLL3Byefki8zrG_RMAn37faXYISOll3ReIxcyWlE7yoE&s=519"
---

# You can make concrete that is effectively impermeable.  They make...

*September 22, 2025 — Comment Appalachian Wood Homestead's reel*

You can make concrete that is effectively impermeable.  They make boats out of ferrocement after all.  And  such boats are known for their durability.