[header] How to fireproof a basement [title] Measure the distance between your basement wall studs. [step] Stretch a tape measure across the expanse from one stud to another. You should be measuring between the inner edges of the studs. 
Write this number down, rounding to the nearest quarter inch (roughly 1.25 cm) the firestopping blocks will be cut to fit this space. [substeps] Before you begin, check to see if your the walls of your basement already have some form of fire-stopping in place.