Insulation
InsulationSurplus insulation from local contractors and DIYers. New, excess, and good used material at a fraction of retail.
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Set an alert and be first to know →Buying surplus insulation: what to know
Insulation is bought by the bag against a coverage chart, and the chart always rounds up, so sealed bags come back from nearly every attic and wall job. It never spoils, and paying retail for the last two bags of a project is exactly what this category exists to prevent.
Check before you buy
Refuse anything that has been wet
wet fiberglass can dry out; wet cellulose is done. Either way a soaked bag has lost loft, and loft is the R-value.
Check the R-value and format against your bay
batts are sized for 16-inch or 24-inch framing and specific depths. The bag states both. A mismatch means compressing or gapping, and both waste it.
Match faced and unfaced to the job
the paper facing is a vapor retarder and belongs on the warm side. Doubling up faced batts traps moisture between layers.
For rigid foam, check the edges and faces
crushed corners and deep dents break the insulating value at exactly the joints. Surface scuffs are nothing.
Rather have it installed? The directory has local handyman pros you can message directly, and the cost guide shows what jobs like yours run locally.
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