Best protection for roofs
SOLITEX MENTO membranes have a pore-free,
closed-cell TEEE membrane that offers particularly
good protection against driving rain.
contrast with conventional sarking membranes
where diffusion results from air exchange
through a microporous membrane, diffusion
occurs actively along the molecule chains in the
case of a SOLITEX membrane. At the same time,
SOLITEX MENTO membranes have very low diffusion
resistance with an sd value of 0.05 m, an g-value of 0.25 MNs/g and a water vapor permeance of 65.5 US perms.
Thanks to active moisture transport, the TEEE
membrane has an extremely fast drying capacity
that protects the membrane against ice formation
in winter. This is of great benefit for the
stability of the overall structure, as permeable
underlay and sarking membranes turn into vapour
barriers when ice forms (ice is impermeable) and
act as moisture traps.
Other features of TEEE membranes include
reliable protection in the presence of wood
preservatives (drops of water cannot penetrate
the membrane even if there is reduced surface
tension, as there are no pores present) and the
particularly high thermostability (melting point
of TEEE approx. 200 °C (392 °F), PP approx. 140 °C (284 °F)). This
stability at high temperatures gives the plastic
material extremely high ageing stability over a
period of decades – even on dark-coloured roofs.