Boima ba lehong ke karolo ea bohlano feela ea konkreite e matlafalitsoeng, Patsi e na le boima bo bobebe, setsi se tlaase sa matla a khoheli, ho feto-fetoha ha maemo hantle, sebopeho se tsitsitseng le li-grooves, Matla a fokolang a tšisinyeho ea lefatše a kenngoa nakong ea tšisinyeho ea lefatše, Ts'ebetso e ntle ea ho sisinyeha ha lefatše.
Mehaho ea mapolanka a boima a hahiloeng ka lehong la lintlha tse kholoanyane.Ka kakaretso, botenya ba thepa ea lehong e tiileng maboteng ha ea lokela ho ba ka tlase ho 10cm.
lithaele tsa mapolanka tsa thepa e tala ke lehong le tsosolositsoeng (kedare, Scotch pine, spruce, Douglas fir, joalo-joalo. bareki ba tšehetsa ho hlakisa tlhahiso ea lehong), lehong la tlhaho le thibelang likokoana-hloko le lehong la bopaki ba likokoanyana.
Lipolanka tsa kedare li-antisepsis tsa tlhaho le tse nang le botsitso bo phahameng ba li-dimensional, ke li-softwood tse ntle ka ho fetisisa bakeng sa ho amohela lipente, litšila, oli le liaparo tse ling.