We have to follow suit. To match the poor performance of leaky fiberglass-insulated homes, all an Icynene contractor has to do is skimp on insulation thickness.
It must meet minimum insulation requirements, and It must be sealed against air leakage. The blower-door testing of airtightness of the houses insulated with Icynene indicates an average air infiltration rate 5.
Walls and ceilings separating the garage from conditioned spaces. Icynene profits from the sale — at the expense of the gullible homeowners, of course, who end up living in a house with an underperforming ceiling.
Openings between window and door assemblies and their respective jambs and framing. The company has apparently decided that the only way Icynene can compete with less-expensive types of insulation like cellulose is to convince builders that they can get away with less insulation than code books require.
Common walls between dwelling units. Icynene has seized on this fact — the fact that lax code enforcement has encouraged the proliferation of leaky homes — to put forth the surprising proposition that Icynene-insulated homes can perform poorly, too.
Insulating Basement Walls With Embedded Joists While energy experts often advise builders to exceed minimum code requirements for insulation, Icynene Incorporated, a manufacturer of open-cell spray polyurethane foam, is swimming against the tide. If some houses are violating one part of the building code, why not let us violate a different part of the code?
Many energy-efficiency experts are frustrated that the code is unevenly enforced. The solution to this problem is better code enforcement, however — not lowering the bar so that violators of one code provision can perform just as poorly as violators of a totally different code provision.
In other words, there is no such thing as a legal crack or air leak. Behind tubs and showers on exterior walls.
That gives us an idea! Dropped ceilings or chases adjacent to the thermal envelope. That means that new homes, whether insulated with fiberglass batts or Icynene, must meet both air-sealing requirements and minimum insulation requirements.
All joints, seams and penetrations. Building departments are also derelict if they fail to enforce existing code requirements for air sealing. Site-built windows, doors and skylights. Surprisingly, Icynene is trying to convince builders to install less insulation than the code requires.
These are separate requirements; there is no reason to believe that a builder who complies with only one of these requirements is exempt from the other. Other sources of infiltration.
Since R is clearly not as good as R, building officials must uphold an important principle: Every time that Icynene convinces a local code official into approving the installation of R ceiling insulation, the company succeeds in making a sale that might otherwise have slipped away. Building inspectors rarely check airtightness Unfortunately, the requirements of Section NHome Essays Acc You Decide.
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