Yes, simply impregnate the tent awning or boat cover with Sprayhood & Tent Protector. If necessary, wipe the window film clean with a damp cloth immediately after impregnation.
Once the impregnating agent dries, it can leave small marks on the windows. These can be removed effectively with a cloth and a little white spirit. If necessary, clean the tent windows afterwards with Sprayhood & Tent Shampoo.
We use this impregnating agent to impregnate and waterproof all tent awnings, boat covers and catering umbrellas at our specialist sail & tent cleaning facility. We do that through submersion. Thus, the product comes into contact with the window film without problems.