Seal all penetrations through the building envelope

Tags: Electrical/Plumbing, cold, dry, Foam Joint Sealants, hot_humid, marine, mixed_humid

All penetrations in the building envelopeExterior components of a house that provide protection from colder (and warmer) outdoor temperatures and precipitation; includes the house foundation, framed exterior walls, roof or ceiling, and insulation, and air sealing materials. should be sealed to reduce air leaks.
Air-sealing reduces the chance that moisture-laden air will enter the structure, causing mold growth and/or rot. Seal attics, crawl spaces, roof access hatches, around flue or chimney penetrations, around electrical, mechanical, and plumbing penetrations, and between windows, doors, and their rough openings.

Green Points

LEED for HomesLeadership in Energy and Environmental Design. LEED for Homes is the residential green building program from the United States Green Building Council (USGBC). While this program is primarily designed for and applicable to new home projects, major gut rehabs can qualify. : EA 3.1 reduced envelope leakage is a requirement; EA 3.2 - 2 pts for greatly reduced envelope leakage; EA 3.3 – 3 pts for minimal envelope leakage

NGBSNational Green Building Standard Based on the NAHB Model Green Home Building Guidelines and passed through ANSI. This standard can be applied to both new homes, remodeling projects, and additions. /ICC-700: under Chapter 7, Energy Efficiency: up to 15 pts for third-party verification; up to 3 pts for no verification; insulation and air-sealing includes: spray or rigid foam insulation; ICFInsulated concrete form. Hollow insulated forms, usually made from expanded polystyrene (EPS), used for building walls (foundation and above-ground); after stacking and stabilizing the forms, the aligned cores are filled with concrete, which provides the wall structure. or SIP(SIP) Building panel usually made of oriented strand board (OSB) skins surrounding a core of expanded polystyrene (EPS) foam insulation. SIPs can be erected very quickly with a crane to create an energy-efficient, sturdy home. wall systems; spray foam attached to top, bottom and both sides of cavities; voids are less than 2% of the total; exterior rigid insulation is tightly fitted