Penoflex

Ryanfire Penoflex is a high quality, fire-rated, flexible MS (modified silicone) sealant. Penoflex may be used in place of Ryanfire Mastic, where flexiblity and high movement is required in a seal. Penoflex is an eco-friendly, very low VOC sealant and does not contain any solvent or isocyanate. It can be over painted with water based paints and has excellent UV resistance.