Tasman Insulation manufactures building papers branded Flamestop, Harvi-Kraft and Bitumac. Provides a waterproof sarking and breather capability to prevent moisture/condensation build up. These products can be fire retardant and are designed for use in roofs and external walls. Flamestop building paper can provide high resistance to accidental fires during and after construction. Installed horizontally and overlapped. Secured to studs mechanically.