Estimates have been made of the rates of ventilation necessary for
enclosures, of whose walls a relatively large area is treated with flammable
solvent, in order that the drying time for the disappearance of fire hazard
shall be similar to that determined experimentally for treated surfaces of
small area.
For enclosures such as warehouses and, probably, roof spaces that can be
ventilated by at least a trap door and are not sealed, the required rates of
ventilation are likely to be attainable mereIy by opening all doors and
windows, even if all interior surfaces are treated.