Chapter 2 - Exteriors Flashcards
(108 cards)
List 10 exterior wall surface materials that you’ll commonly find.
Brick, stone, concrete, stucco, EIFS, metal and vinyl siding, asphalt shingles, wood siding, cement-based siding, clay and slate shingles, plywood, hardboard, and OSB (orientated strandboard), fiber–cement siding
List three main functions of exterior cladding.
- protect the structure from water
- provide reasonable security
- enhance the appearance of the house.
List six common problems that are found on all types of wall systems.
- Water penetration
- too close to grade
- too close to roof surface at the bottom of the siding
- planters and gardens against the wall
- vines
List seven common problems with masonry walls.
-efflorescence
-spalling
-cracking
mortar deterioration
-missing weep holes or flashings
-mechanical damage
-bowing walls
Describe efflorescence. What is it?
Efflorescence is a whitish powder salt deposit that is associated with water moving through masonry. Water dissolves salts from masonry or mortar and deposits them on the surface as Crystal when evaporating.
Expanding, rusting steel lentils over windows and doors often cause cracks in what direction in masonry walls?
Horizontal cracks
Stucco is made of _______, _______, and _______.
Cement, aggregate and water.
What is the problem with having aluminum in contact with stucco?
It oxidizes (deteriorates).
List three functions of a weep screed.
- provides a finished edge
- allows drainage
- prevents water from being drawn up into the wall
List five common problems with conventional stucco.
- cracks, crumbling, loose, or bulging
- incompatible flashings
- mechanical damage
- rusted lath or trim
- no weep screed
What is the problem that people are experiencing with EIFS?
Water is getting into the wall system at penetrations causing structural damage.
What is a kickout?
A flashing used where a wall extends beyond a roof, to shed roof water away from the stucco.
List three causes of problems that are unique to EFIS compared to conventional stucco.
- lack of building paper acting as a backup moisture barrier
- no drainage plane
- poor drying potential
List six factors that may suggest concealed problems with an EFIS application.
- high wind exposure
- high rainfall area
- small or no overhang
- lots of penetrations
- attention to detail at openings is poor
- horizontal stucco surfaces
- poor caulking maintenance
List 10 areas outside to check for evidence of problems with EIFS installations.
- exposure
- roof\wall connections
- gutters
- chimneys
- door and window openings
- openings for electrical conduits, receptacles, lights, telephone wires, cable television, air conditioning refrigerant lines, pipe penetrations including hose bibbs, shutters, house numbers, etc.
- vent openings
- railing and deck connections
- cracks, bulges, peeling, fungus, exposed reinforced mesh or metal trim
- evidence of repairs – this can include patching or painting
List five areas on the interior to check for evidence of problems with EIFS installations.
- stains on walls, floors, and ceilings
- rusting carpet tack strip
- peeling paint
- damaged flooring
- elevated moisture levels and drywall and\or subflooring
List two areas in basements and crawlspaces to look for the respect to problems on the EFIS installations.
- mold or rot on joists, sills, rim joists, and subflooring
- stains on foundations coming from sill area
What is the effect of vines growing on wood siding?
Vines on wood siding will hold water and reduce drying potential
For each of the choices below, circle the siding that would perform better.
A. 12-inch-wide board - or - 6-inch-wide board
B. 3/4-inch-wide board - or - 3/8-inch-wide board
C. Smooth board - or - Rough-textured board
D. 6-foot-long board - or - 12-foot-long board
A. 6-inch-wide board
B. 3/4-inch-wide board
C. Rough-textured board
D. 6-foot-long board
How many layers of wood shingles are typically used in a siding application?
Two (double layer)
List five common problems with conventional wood siding (boards, shingles, or shakes).
- Rot
- splitting
- warping
- paint\stain problems
- loose
Hardboard is a type of _______ board.
Fiber
List four common problems with plywood, OSB, and hardboard.
- rot, swelling, and delamination
- buckling or cracking
- loose
- mechanical damage
What is the life expectancy of vinyl and aluminum siding?
More than 40 years