That’s the appeal: cutting waste from seaweed piling up on Caribbean
beaches while producing a lightweight, non-structural building material with
potential insulation benefits

Sargassum bricks blend dried, processed seaweed fiber with a lime, clay or
cement binder: collected, cleaned, dried, shredded, mixed, pressed into molds and
cured into lightweight blocks

Hempcrete is not structural. It works as an insulating wall system paired
with a structural frame — reinforced concrete, steel or wood — that carries the actual
loads