Fiberglass batts and rolls do not settle over time. Loose-fill fiberglass may settle about 1%, which won’t affect its thermal performance. Cellulose insulation, however, will settle as much as 20% over time. The Insulation Contractors Association of America recommends an additional 25% of thickness be added to compensate and maintain R-value performance. Click here for more information.
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Nassau Suffolk Lumber & Supply Corporation has been serving generations of Long Island's builders & contractors since 1927. We feature an extensive inventory of quality building materials including windows, doors, moulding, decking, kitchen cabinetry and only the finest grades of lumber from select mills. Plus, count on the full support of our experienced trained sales force dedicated exclusively to serving the needs of our professional customers.