AWCI EIFS Inspector flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

EIFS definition

Exterior insulation and finish system: a cladding of insulation board, reinforced base coat with embedded mesh, and a textured finish coat applied over a substrate and drainage plane.

Polymer-based (PB) EIFS

A system using preformed EPS insulation board, a synthetic polymer base coat, and an acrylic or similar finish coat; mesh is embedded in the base coat for reinforcement.

Polymer-modified (PM) EIFS

A system using a cementitious polymer-modified base coat over mesh, typically with mineral-wool or treated EPS board, offering higher impact and fire performance than PB systems.

Base coat and mesh

The reinforced layer applied over insulation board; glass-fiber mesh is embedded in the wet base coat, which is then cured before the finish coat is applied.

Drainable EIFS

A cavity system with a drainage plane behind or within the insulation, allowing water that enters the cladding to drain to weep provisions at the base.

Mesh lap requirement

Glass-fiber mesh must be lapped per the manufacturer, commonly 2-1/2 in (64 mm) minimum on side laps, to maintain continuous reinforcement across joints.

Sheathing flatness tolerance

Sheathing must be flat within the manufacturer's tolerance, commonly 1/4 in (6 mm) in 10 ft (3 m); out-of-plane framing must be corrected before board attachment.

Substrate verification

Confirm sheathing type, thickness, fastener type and spacing, and framing size and spacing match the design before insulation board attachment.

Adhesive coverage pattern

Insulation board adhesive must be applied in the manufacturer-specified pattern, such as ribbon-and-dab or notched trowel, with the required minimum contact area.

Fastener embedment check

Verify that mechanical fasteners penetrate the framing by the required depth, not just the sheathing, per the manufacturer's installation instructions.

Substrate joint alignment

Insulation board joints should be staggered from substrate joints, and substrate control joints must align with EIFS joint layout to avoid cracking.

Wood sheathing moisture limit

Wood-based sheathing must be within the manufacturer's moisture limit before cladding; wet or damaged panels must be replaced or allowed to dry.

WRB shingle lap

Water-resistive barrier is installed upper-over-lower with minimum laps, commonly 2 in (51 mm) side laps and 6 in (152 mm) end laps, per manufacturer.

WRB continuity

The WRB must be continuous behind the EIFS and integrated with flashings at all penetrations, terminations, and transitions to other claddings.

Head flashing end dams

Head flashings must be sloped to drain and have end dams to prevent water from running past the ends and behind the cladding.

Sill pan flashing

Pan flashing at openings must extend behind the WRB, turn up at jambs, and slope outward so water drains over the WRB below.

Backer rod depth ratio

Sealant joints require backer rod at the correct depth-to-width ratio, commonly 1:2, to allow proper movement and sealant cure.

Sealant compatibility

Sealant must be compatible with the EIFS finish, substrate, and adjacent materials; verify primer requirements and joint design for movement.

Termination backwrapping

At EIFS terminations, mesh and base coat must wrap around the board edge or terminate with a casing bead and sealant joint.

Weep provision inspection

Weep or drainage provisions at the base of drainable EIFS must remain open and unobstructed after finish and sealant application.

Window frame alignment

Window and door frames must be set plumb, level, and square before EIFS termination; verify rough opening dimensions and clearances for flashing and sealant.

Window flashing sequence

Head flashing is installed over the window flange and integrated with the WRB; jamb flashing laps over the head and under the sill flashing.

Sill pan slope

Sill pan flashing must slope to the exterior and drain over the WRB below; verify no back-slope or ponding at the sill.

Frame-to-EIFS sealant joint

The joint between EIFS and window or door frames must be a movement joint with backer rod and a minimum width per the sealant manufacturer.

Penetration flashing

Pipes, vents, and electrical boxes must be flashed or sealed with a compatible boot or collar integrated with the WRB and finished with sealant.

Flanged window detail

Flanged windows are installed with the flange integrated into the WRB and flashing sequence; non-flanged units require a different flashing detail.

Inspection record content

Records capture date, location, system manufacturer, product names, batch or lot, substrate condition, and pass/fail for each inspection stage.

Hold points

Inspection stages that must be approved before work proceeds, commonly substrate, WRB and flashing, insulation attachment, mesh and base coat, and finish.

Photographic documentation

Photos should be dated and labeled by elevation, floor, and grid location, with a scale reference where practical, to support inspection records.

Nonconformance report

A report identifying the deficiency, the applicable specification or code section, the corrective action taken, and the re-inspection result.

Governing code reference

The adopted edition of the International Building Code or International Residential Code, plus the manufacturer's evaluation report (ESR), governs EIFS compliance.

Specification precedence

The project specification and manufacturer's published installation instructions govern where more restrictive than the code; conflicts must be resolved in writing before work.