Diamond J Insulation is an insulation cont actor located in De Kalb, TX. We specialize in Spray Foam Insulation, Residential Insulation, Open Cell Insulation, Closed Cell Insulation, Insulation Services, Foam Insulation, Spray Insulation & more! As an Insulation Company we believe in providing our customers with a good quality product by only using skilled installers to apply our insulation. We primarily insulate new construction and remodeling projects, but can retrofit attics and subfloor systems in existing buildings. There are many knowledgeable architects and builders using our services due to research they have done on the product and concluded that it is superior to fiberglass and other insulations. Call us today for more info.