Many years ago I made my own felt, last winter I made a cloche hat and scarf to wear to Melbourne. Recently, Due to the hot weather and heavy rains my studio was slightly flooded. [in the process of weather proofing it] Although 95% of my stock was rescued - i notice my felt cap and scarf are marked. with mould and dust. Do I wash it and re-block the hat in hope it will come clean and new again! Has anyone experienced similar.
You don't mention if it is handmade felt or a commercial hood.I have experience with handmade felt. It is easily washed in wool wash gently by hand,let it soak a little to dispel the dirt ,rinse in same temperature water then remove excess water
by blotting with a dry towel heavily and then re blocking and steaming as needed.Hope that is helpful!
I have found that the best way to remove mould off any type of fabric is to soak the item in COLD water with a good quantity of table salt. Being a felt hat and scarf I do not believe either would be affected by this. Soak until you are satisfied all of the mould and staining has disappeared, and then rinse in cold water until clear. Give a final vinegar rinse, blot dry, microwave felt cap until very warm and then re-block, steam etc.
I have saved a friends pure silk wedding dress and many other formal dresses that had severe mould stains caused by floodwaters!