Field glossaryTapered insulationInsulation board manufactured at an angle to build drainage slope into a flat structural deckUsed across 2 Anvilfield field guides, most in Roofing. Where this shows upRoofingRoof ponding waterRoofingRoof crickets and tapered insulation Related termsCricket / saddlePondingPonding instabilityPositive drainage Back to the full field glossary