![How can I add flotation foam up underneath these areas? I am not drilling holes and pouring from the outside. Looking for other ideas. Thanks : r/boatbuilding How can I add flotation foam up underneath these areas? I am not drilling holes and pouring from the outside. Looking for other ideas. Thanks : r/boatbuilding](https://preview.redd.it/how-can-i-add-flotation-foam-up-underneath-these-areas-i-am-v0-qgghinvdpm5b1.jpg?width=640&crop=smart&auto=webp&s=b467c1ebae1deacd29d1bce50002fc744def1ccb)
How can I add flotation foam up underneath these areas? I am not drilling holes and pouring from the outside. Looking for other ideas. Thanks : r/boatbuilding
![Amazon.com: TotalBoat Flotation Foam - 2 Part Expanding Polyurethane Marine Pour Foam for Boat Floatation, Insulation and Soundproofing (2 LB Density, 2 Gallon Kit) : Sports & Outdoors Amazon.com: TotalBoat Flotation Foam - 2 Part Expanding Polyurethane Marine Pour Foam for Boat Floatation, Insulation and Soundproofing (2 LB Density, 2 Gallon Kit) : Sports & Outdoors](https://m.media-amazon.com/images/I/51BGUa0UZ6L.jpg)
Amazon.com: TotalBoat Flotation Foam - 2 Part Expanding Polyurethane Marine Pour Foam for Boat Floatation, Insulation and Soundproofing (2 LB Density, 2 Gallon Kit) : Sports & Outdoors
![Fiberglass Supply Depot 4 Lb. Density Expanding Foam Kit: 2 Part Closed Cell Polyurethane Liquid Foam for Boat and Dock Flotation, Insulation, Soundproofing and Filling Voids - Gallon Kit - Walmart.com Fiberglass Supply Depot 4 Lb. Density Expanding Foam Kit: 2 Part Closed Cell Polyurethane Liquid Foam for Boat and Dock Flotation, Insulation, Soundproofing and Filling Voids - Gallon Kit - Walmart.com](https://i5.walmartimages.com/asr/c19c14c7-e8ef-4176-8872-fee6a7f7a0c9.7ede61b0193b6b607c3d63806ec19c5e.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Fiberglass Supply Depot 4 Lb. Density Expanding Foam Kit: 2 Part Closed Cell Polyurethane Liquid Foam for Boat and Dock Flotation, Insulation, Soundproofing and Filling Voids - Gallon Kit - Walmart.com
![Flotation Foam: Helps to make a boat unsinkable by reducing the average density of the boat. | Boat building, Boat design, Rib boat Flotation Foam: Helps to make a boat unsinkable by reducing the average density of the boat. | Boat building, Boat design, Rib boat](https://i.pinimg.com/564x/0e/fc/ab/0efcabb423b2e4780c27af01bc4f25a2.jpg)