"Applications in facing brickwork(i.e, brickwork that is visible and not covered by something else) on external facades and anywhere else where damp proofing of joints is required."
Slight doubt as to the meaning of 'fabricas' here- surely it isn't implying that the application is for the facades of brick producing factories? Also, your question should also have included 'vista' as in 'cara vista', i.e, 'facing'. !