Spray Foam Roofing – Linweld – Omaha, NE 1- Linweld – Omaha, Nebraska. Rolled ply roofing before Tillotson Enterprises Spray Foam System on this warehouse. 2- Ponding water creates a potential for leaks. 3- Missing roofing materials will eventually cause damage to the interior of the warehouse building. 4- SPF Foam Roofing Application in process. 5- Primer being applied over the spray foam roofing. 6- Roof sidewalls are coated as well. 7- Finished Spray Polyurethane Foam Roof (SPF) stops leaks, increases energy efficiency and stops lateral water movement.