1. Extruded polystyrene (XPS) laupapa e masani ona faʻaaogaina mo le faʻaogaina o le taualuga o le fale, faʻapipiʻi uʻamea, faʻalava puipui fale, faʻamalama fola fale, fola plaza, pulea le malulu o le eleele, alalaupapa ea malulu, malae vaʻalele ala vaʻavaʻa, ma maualuga -faʻasao nofoaafi subgrades, ma isi.
2. Pe a faʻaogaina mea faʻapipiʻi e faʻapipiʻi ai laupapa XPS, e manaʻomia ona iloiloina mataupu faʻaleagaina. O mea faʻapipiʻi faʻapipiʻi e iai ni faʻamanuiaga e pei o le matua teteʻe, faʻavaivai vaivai, ma le faʻamaʻiina o le pala; o le mea lea, e sili atu le faʻapipiʻiina o mea faʻapipiʻi mo le faʻapipiʻiina o laupapa XPS.