(pests, critters and bats travel these roads too.) air sealing attics read more sealing around electrical and cable lines holes made for threading wires through walls and studs leave lots of room for air to travel. if there's ever a fire, these holes can enable flow of air helping to accelerate the spread...
penetrations - helping to slow the spread of these destructive elements during a fire. here's what makes great stuff(tm) fireblock great: impedes the spread fire and smoke1 bright orange in color for easy code identification ul classified icc-es evaluated esr-1961 seals electrical wires running through wall studs...