The original rock that has undergone metamorphism is called the protolith. Protolith can be any type of rock and sometimes the changes in texture and mineralogy are so dramatic that is difficult to distinguish what the protolith was. Note that diagenesis and weathering are also a changes in form that occur in rocks.
This will prevent you from breathing in fiberglass fibers. Refrain from scratching your fiberglass itch. Scratching or rubbing will force the fiberglass deeper into your skin, rather than getting it out. Take a cold shower immediately after working with fiberglass.The cold water will help keep your pores closed so that the fibers don't get deeper into your skin.It will also wash off the larger pieces of fiberglass. Take a hot shower or bath following your cold shower. The warm water will open your pores, allowing any remaining fiberglass to work its way out.he cold water will help keep your pores closed so that the fibers don't get deeper into your skin. It will also wash off the larger pieces of fiberglass. Take a hot shower or bath following your cold shower. The warm water will open your pores, allowing any remaining fiberglass to work its way out.
Don the face mask and gloves. Sanding fiberglass creates a lot of dust that can irritate your lungs and skin. Sand the surface of the prefab shower stall. To provide a suitable surface for your paint to adhere, roughen the surface of the fiberglass lightly with some sandpaper.