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.
[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.