2. Air Barrier Paper A membrane that is applied over the sheathing in order to close up the joints and prevent air passage into the building.
3. Attic Ventilation Important for allowing water vapor and heat to escape the attic space. Ridge Vent: a vent placed over the gap where the roof decking meets at the ridge
40. Disadvantage: May need additional heating source in areas with very cold climates. Not used as much up north.
41.
42. Insulation Foamed- a mixture of two chemicals that react to form very affective insulation that also completely fills in cracks. Rigid Board- comes in 4âX8â sheets and is used as exterior sheathing for basement walls
53. Plumbing Plumbing Vent Plumbing Vent: allows the plumbing system to drain by letting air in and eliminating the vacuum affect a closed drain would create