Features & Benefits Will not rust, warp or corrode monierprime roof tiles will not rust, warp or corrode, a problem with other roofing materials Salt Safe monierprime roof tiles are ideal for coastal locations that endure the wind, spray and salt of the ocean as they are salt safe and will not corrode. Impervious to frost and ice monierprime roof tiles are ideal for those living in colder climates. They are impervious to the effects of frost and ice, and will never warp, no matter how cold it gets. Tank water safe monierprime roof tiles ' raw materials are non-toxic, so the water that runs off a tiled roof is potable. However, factors such as atmospheric fallout need to be considered. Provides thermal insulation monierprime roof tiles help to keep the cold out and the heat in, in the winter...and the heat out and the cool in, in the summer. Helping to save you and the environment through energy savings. Provides acoustic insulation monierprime roof tiles have a sound reduction potential of ≈30db. That is twice the sound deadening perfomance of other thinner roofing materials. And they don't "pop" due to expansion or contraction.