What is the main problem with EIFS products?

What is the main problem with EIFS products?

The problems with barrier EIFS cladding all stem from water intrusion. These problems include moisture accumulation in the wall cavity, subsequent wood damage and, in more advanced cases, mold growth and the infestation of pests such as carpenter ants or termites.

What is EIFS coating?

EIFS, also known as Exterior Insulation and Finish Systems, is an energy saving and durable cladding consisting of scientifically developed layers of materials that coordinate to restrict the transfer of energy and eliminate the accumulation of moisture. In reality, EIFS works as an overcoat for your home or business.

What is a major cause of EIFS moisture intrusion?

The typical moisture damage in an EIFS assembly is deterioration due to mold, wood decay fungi and corrosion leading to decay, loss of strength and discoloration. The components principally affected are the interior and exterior gypsum sheathing, the metal or wood studs and the fiberglass cavity insulation.

What type of foam is used in EIFS?

Polyisocyanurate (or polyiso) foam is also used in EIFS. It is used mostly on wood-frame homes. It is a thermosetting type of foam plastic insulation.

What is Class PB EIFS?

Senerflex Classic PB is an Exterior Insulation and Finish System (EIFS) that provides a durable weather-resistant primary barrier. The system offers design flexibility, aesthetic appeal and energy savings.

How thick is EIFS finish?

The entire thickness of the EIFS system is typically, approximately 1/8″to 1/4″, plus the thickness of the insulation board, which will vary, based upon desired R-value (insulation rating).

How thick should EIFS be?

Generally the minimum thickness of EPS for Dryvit EIFS is 1 inch. Locally, where clearance may be an issue (window and door returns, etc.). 3/4 inch thickness is acceptable. Since this limits rasping, it is not recommended to be used over full wall areas.

Is EIFS a vapor barrier?

When you install EIFS on the exterior wall, it acts as a vapor barrier on the cold side of that wall. When fiberglass-batt insulation is then installed in the wall cavity, condensation occurs inside the wall at the (substrate) sheathing when a contrast in temperature exists from inside to outside.

Can EIFS be used as exterior cladding?

Early EIFS used a face-sealed approach (defined later). Face-sealed exterior insulation and finishing systems (EIFS) are inherently defective and unfit for use as an exterior cladding system where moisture sensitive components are used without a provision for drainage or in locations and assemblies without adequate drying.

What are the components of the EIFS system?

The components principally affected are the interior and exterior gypsum sheathing, the metal or wood studs and the fiberglass cavity insulation. Less affected are the EIFS lamina and sealants.

What is moisture damage in EIFS Assembly?

When the quantity of accumulated moisture exceeds the safe or tolerable moisture storage capacity of a material, deterioration occurs. The typical moisture damage in an EIFS assembly is deterioration due to mold, wood decay fungi and corrosion leading to decay, loss of strength and discoloration.

Are there any limitations to using a drainable EIFS?

Drainable EIFS are not subject to the same limitations of use as face-sealed or barrier systems. In fact, drainable EIFS are among the most robust and advanced moisture control assemblies available.