Is PVC foam sheet waterproof?

Yes, PVC foam sheets are waterproof. PVC stands for polyvinyl chloride, and the foam sheets are made by adding a foaming agent to PVC. This foaming process creates a cellular structure within the sheet, making it lightweight and water-resistant. PVC foam sheets do not absorb water, making them an excellent choice for applications where exposure to moisture or water is a concern.
The closed-cell structure of PVC foam sheets helps to prevent water penetration and ensures their waterproof properties. This characteristic makes PVC foam sheets suitable for various indoor and outdoor applications, including signage, displays, construction, marine applications, and more. However, it's worth noting that while PVC foam sheets are waterproof, the edges and cut surfaces may require additional sealing or protection to maintain their water-resistance.