Jul 282011

There are many synonyms and spellings for EIFS, due in part to varying pronunciations on the job site by contractors and skilled tradesmen. Officially, the spelling “Exterior Insulation Finish Systems” is used by the governing body in Canada (the EIFS Council of Canada) and “Exterior Insulation and Finish Systems” is used by the governing body in the USA (the EIFS Industry Members Association).

Other variations include:

  • Exterior Insulation Finish System (EIFS)
  • Exterior Insulation Finishing Systems (EIFS)
  • Exterior Insulated Finish Systems (EIFS)
  • Exterior Insulated Finishing Systems (EIFS)
  • Exterior Finish and Insulation Systems (EFIS)
  • Exterior Finish and Insulating Systems (EFIS)

What is EIFS?

EIFS Comments Off
Feb 182011

EIFS is an acronym that stands for “Exterior Insulation Finish Systems”, and is sometimes mistakenly referred to as “Stucco”. It is a multi-layer building cladding (exterior wall) that has the ability to reduce a home’s heating or cooling requirements. It is by far one of the fastest growing wall claddings on the market, due to it’s pleasing appearance, design flexibility, insulating ability, competitive cost and superior moisture management capabilities.

Who is the Site For?

ExteriorInsulationFinishSystems.com is a collection of organizations, contractors, manufacturers and code writers dedicated to bringing the truth about Exterior Insulation Finish Systems (EIFS) to the general population. We are here to educate home owners, contractors, architects, engineers and other building professionals and bring them up-to-date on the latest developments.

EIFS Failures

There are tens of thousands of improperly installed EIFS applications throughout the USA. The problem became so pervasive that many countys outright banned EIFS. While outright avoidance is cowardly and ignorant. Take a look at a look through some improperly installed EIFS that have failed and the story behind them.

There are hundreds, even thousands of articles around the internet from so-called “building experts” who are saying things like “EIFS is 3 layers” or “EIFS traps moisture”. What most fail to realize is that they are just demonstrating the degree to which they are not an expert by spouting-off outdated, inaccurate information. Would you trust an accountant who last received updates and training in 1999? Rather than adressing these inaccuracies individually, we’ll provide you with the correct information and resources to back it up.

Drainage Modern EIF systems incorporate the use of essentially 2 forms of drainage – grooved insulation (referred to as geometrically defined insulation) and vertical channels of adhesive.

Weather Resistive Barriers I have not come across an EIFS specification by a manufacturer in the past 5 years that does not require some sort of weather resistive barrier between the insulation and the substrate. Typically this takes the form of a trowel-applied weather barrier specific to each manufacturer. These weather barriers have varying ratings as far as classifications (moisture barrier vs vapour barrier) and the specific requirements of the project, or system being installed, will dictate which product is used.

Water Management EIFS has tested favourably against brick, stucco, concrete block and fiber-cement sidings in tests performed by the ORNL (Oak Ridges National Laboratory).
Those interested in viewing the study can view it at: http://www.eima.com/pdfs/EIMA%20ORNL%20ExecSum%20Final.pdf

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