Duerst Insulation Technicians

Applied as a liquid and cured into place, spray foam reaches small openings that are difficult to cover with conventional materials. That makes it especially useful around rim joists, crawl spaces, rooflines, cathedral ceilings, and irregular framing. It is generally the highest-cost option Duerst installs, but it can deliver the strongest combination of thermal resistance and draft control when the home and project are a good fit.

Cellulose is blown or packed into open areas and enclosed wall cavities, helping reduce heat movement and soften sound between spaces. Because it is made primarily from recycled fiber, it also appeals to homeowners who value material reuse. Duerst frequently uses cellulose where homeowners want an effective attic or wall upgrade without moving to the higher price of spray foam. Careful air sealing remains an important part of the finished system.

Fiberglass uses fine glass fibers to slow heat transfer and is available in batt or blown-in forms. It is widely used, budget-conscious, and suitable for many open framing and attic applications. Its performance depends heavily on complete, gap-free installation, and separate air sealing may be needed because the material itself does not stop drafts as effectively as spray foam.