▁ ▁Ear then ▁flo ors ▁were ▁used ▁in ▁ancient ▁Greece , ▁and ▁in ▁many ▁other ▁countries ▁in ▁ancient ▁times . ▁ ▁Ear then ▁flo ors , ▁along ▁with ▁stone ▁and ▁sometimes ▁wood , ▁were ▁used ▁as ▁th res hing ▁flo ors . ▁ ▁Const ruction ▁ ▁In ▁modern ▁times , ▁most ▁ear then ▁flo ors ▁are ▁often ▁laid ▁over ▁the ▁top ▁of ▁a ▁sub floor ▁of ▁t amp ed ▁gra vel ▁or ▁c ob ▁or ▁ad obe , ▁and ▁then ▁a ▁mixture ▁of ▁cl ay , ▁sand ▁and ▁fi ber ▁are ▁mixed ▁and ▁le ve led ▁onto ▁the ▁sub floor . ▁The ▁finished ▁layer ▁can ▁be ▁ 1 / 2 ▁to ▁ 2 ▁inches ▁thick , ▁and ▁once ▁dry ▁is ▁se aled ▁with ▁a ▁dry ing ▁oil ▁( like ▁lin seed ▁oil ). ▁Ear then ▁flo ors ▁can ▁be ▁laid ▁over ▁the ▁top ▁of ▁previously ▁installed ▁wood ▁flo ors ▁but ▁weight ▁can ▁become ▁an ▁issue . ▁ ▁Fin ishing ▁A ▁dry ing ▁oil ▁like ▁lin seed ▁oil ▁is ▁usually ▁used ▁to ▁se al ▁the ▁floor ▁and ▁protect ▁it ▁from ▁wear ▁and ▁te ar . ▁A ▁final ▁coat ▁of ▁a ▁w ax ▁se aling ▁finish ▁( per illa ▁oil ▁or ▁floor ▁w ax ) ▁can ▁be ▁used ▁to ▁increase ▁dur ability ▁and ▁l ust re . ▁ ▁References ▁ ▁External ▁links ▁ ▁The ▁March ▁H are : ▁Summer ▁' 0 1 ▁Issue ▁ 2 9 ▁ ▁- ▁Ear then ▁Flo ors : ▁( 6 ▁parts ▁sand , ▁ 2 ▁parts ▁cl ay , ▁