Frequently Asked Questions

Two-pound closed cell foam provides superior air sealing and insulation performance during extreme temperature swings and polar vortex conditions common in Southwest Minnesota. The closed cell structure prevents air infiltration that causes heat loss in fish houses, barns, and crawl spaces. This density level handles the region's harsh winters better than open cell alternatives.

R50 is the recommended value for fiberglass attic blow-in insulation in the Tracy area. Older homes often have settling fiberglass that drops below effective levels, creating significant energy loss during Minnesota's coldest periods. Achieving R50 requires proper depth and density to maintain performance over time.

Cellulose's moisture-handling properties make it valuable during spring thaw cycles when attics experience humidity fluctuations. When installed at R40 density at 12 inches, cellulose manages moisture without losing insulating value. This density also prevents settling over time, which is critical for agricultural buildings like hog barns.

Complete removal is necessary when insulation is contaminated by rodents, damaged by moisture, or compromised beyond effective performance. Minnesota's harsh weather creates conditions where rodent damage and moisture issues occur frequently. Removal is typically done during ceiling replacement or major renovation projects to provide a fresh start.

Fiberglass reaches higher R-values (R50) and works well for residential attics needing maximum thermal performance. Cellulose is installed at R40 density and handles moisture better, making it ideal for agricultural buildings like hog barns where humidity levels fluctuate. Density installation technique prevents settling in both materials but differs by product.

Air sealing must happen before blow-in insulation is added. Sealing gaps and penetrations first prevents conditioned air from escaping through the attic, which insulation alone can't stop. Without proper air sealing, even R50 fiberglass won't perform to its rated value because air movement bypasses the insulation layer.

Spray foam provides both insulation and air sealing in one application, which is critical for crawl spaces exposed to ground moisture and outdoor air infiltration. Fiberglass absorbs moisture and loses R-value in damp conditions, while closed cell spray foam resists moisture and maintains performance. The air sealing property also prevents drafts that fiberglass can't address.

Improper installation density is the primary cause of settling in both fiberglass and cellulose insulation. When material isn't installed at manufacturer-specified density, it compacts under its own weight and loses thickness. Cellulose installed at 12 inches at proper density maintains R40 performance, while under-dense installation can drop significantly within years.

Visible contamination from rodents, water staining, compression to less than half original thickness, or odor indicate removal is needed rather than adding more insulation. Damaged insulation won't perform effectively even with new material layered on top. Moisture inspection before any insulation work identifies hidden damage requiring complete removal.

Agricultural buildings like hog barns require understanding of ventilation systems, moisture loads from livestock, and chemical exposure that affects foam performance. Installation must account for higher humidity levels and temperature variations than residential applications. Proper foam selection and application techniques differ significantly between livestock facilities and standard home construction.

New insulation can be added over old fiberglass if the existing material is dry, uncompressed, and free of contamination. However, if the old insulation has settled significantly or shows moisture damage, removal provides better long-term performance. Air sealing must still happen before adding new material regardless of existing insulation condition.

Self-contained mobile equipment allows insulation installation at any farm location without requiring external power or material storage on-site. The mobile setup includes spray foam rigs or blow-in machines that operate independently, which is essential for new construction barns and buildings in rural Southwest Minnesota areas without established utilities.