Unit 2 - Exteriors
Unit 2 - Exteriors

Unit 2 - Exteriors

Confidence Level

50

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Cladding Overview

Adhered Masonry

Stucco

Synthetic Stucco

Wood Siding

Metal & Vinyl Siding

Flashing & Caulking

Asbestos-Cement Siding

Soffits & Fascia

Windows & Doors

Exterior Structures

Garages & Carports

Surface Water

Walks & Grounds

Retaining Walls

✔️Unit 2 Review Questions

The exterior surface of a house is known as cladding.

Cladding can include wall surfaces , soffits, fascia, doors, windows, trims, flashing, and caulking available in many kinds of materials.

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⚠️ General Inspection Issues

Masonry walls may be load-bearing or veneers (just siding). See image below for hints on brick walls.

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Adhered-Masonry Veneer

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Common Problems

Stucco

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Thin concrete-like skin applied to a building (cement, aggregate & water mix).

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Common Problems - Stucco
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Aluminum should not be in contact with stucco as it is prone to oxidation (rusting).

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Watch out for missing drip screeds along stucco. These indicate possible direct bonding of the stucco to the concrete foundation.

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Watch out for hardboard panels that imitate stucco. These are usually 4X9, 4X9 or 4X10ft sheets. Watch for uniformity of the of the surface and trim pieces.

Synthetic Stucco - EIFS

EIFS = Exterior Insulation and Finish Systems

  • Gained popularity in the 1990s
  • Suffers the same problems of traditional stucco but is more prone to conceal water damage.
  • When comparing to traditional stucco, one can attribute the damage to EIFS not having building paper and not having metal lath ( that forms an air space to promote a path for water and drying.)
  • EIFs have been banned in some jurisdictions and have faced lawsuits.
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HOW TO DIFFERENTIATE STUCCO AND EIFS?

Wood Siding

  • Cedar and redwood are amongst the best siding options when it comes to wood because they have natural decay-resistant resins.
  • Best performance is achieved when wood boards are under 8 inches wide, thicker, rough textured and shorter in length.
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To determine wood rot, prob the wood with a screwdriver of a small tool.

JOINTS

  • It is better for joints to be staggered.
  • Joints should be over a stud.
  • Diagonal siding should have vertical joints on top of studs.
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  • Wood shingles should NOT be butted together side to side. There should be roughly 3/8 inch apart.
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If the sheathing is not strong enough to support nailing between the studs, horizontal strapping should be installed.

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Any wood will rot if moisture content is above 20% and temperatures are in the 40-115 Fahrenheit range.

Metal & Vynil Siding

  • Life expectancy of 40+ years
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Common Problems - Metal and Vynil \
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J Moldings (J Chanels) are not flashing! A proper drip cap should still be present.

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If caulking needed is over 1/4 inch, then a backer rod should be used.

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Some jurisdictions require that metal siding be grounded to either the house water piping or ground rods. << Safety measure

Asbestos-Cement Siding

  • Typically come in large shingles 18 by 24 inches
  • Common in the 1900s
  • Not a health hazard if left alone. Only a hazard when they become friable.

Modern Fiber-Cement Siding

  • Similar to asbestos cement without the asbestos
  • Non combustible and termite/rot resistant
  • Should be installed at least 6 to 8 inches off the ground
  • Panels come typically in 4X8, 4X9 or 4X10 , multiple finishes. Typical widtsh are 6-12 inches.
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Parging - thin coat of cement plater. Could be used to prevent further masonry deterioration.

Soffits & Fascia

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Common Problems - Soffits & Fascia

Windows & Doors

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Commons Problems - Doors
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Commons Problems - Windows
  • Sill should be sloped to allow water to run away
  • There should be a capillary break to prevent water from damaging the cladding
  • There should be flashing under sills

TRIM, FLASHINGS AND CAULKING

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A drip clap flashing is not required if the roof overhand is 4X greater than the distance from the top of the window to the soffit

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Common Problems - Trim, Flashings, and Caulking

Exterior Structures

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Porches
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Decks
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Balconies
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Garages
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Carports
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Landings at the top of steps should be large enough to open the door without having to step off the landing. 3X3 feet minimum.

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Look for handrail if there are more than 3 steps

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Maximum rise for steps should be 7 3/4 inches. Minimum tread should be 10 inches.

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Landings below door sills should be at least 6 inches.

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Guards are required if the deck floor is more than 30” above grade

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Handrails on both sides are typically required if steps are wider than 44 inches.

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Handrails must be easy to grab. They should be at least 1 1/2 inches away from the wall and the grab should be roughly 1 1/2 inches across the top surface to make it graspable.

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Spindles or balusters should be spaced out not more than 4-inches away.

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Horizontal railings are sometimes not allowed by jurisdictions as they pose safety hazards for children ( easy to climb.)

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Handrail height should be about 35-36 inches. Guards should be 42 inches high. Although some jurisdictions may allow for 36 inches.

Garages & Carports

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Standards require for garages to be inspected whether attached or detached. Other structures are not required.

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Common Problems - Garages & Carports
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BE CAREFUL of ductwork passing into the house from a garage. There should be no gaps to prevent vehicle fumes from entering the house! There should be no supply or return registers either.

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Doors between the garage and home should not open into a bedroom and these should be exterior-style doors at least 1 3/8 inches thick.

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Garage floor slabs should be at least 3 inches thick and reinforced. Substrate should be 5 inches of well compacted gravel or clear stone.

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Garage floor slabs should be installed with a slope to allow for water drainage out to the overhead door.

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Hollow sounds below slab may indicate settlement of the substrate. Crackin should be anticipated.

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Common Problems - Vehicle doors

AUTOMATIC OPENERS

  • All automatic opener should have the ability to stop and reverse direction upon encountering a possible obstruction when closing. If an obstruction is found when opening, it should stop only.
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When testing an automatic garage opener, keep your hand in the disconnect cord if the units doesn’t stop right away upon encountering an obstruction. You can test with a 2 inch piece of plywood or toilet paper roll.

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Gas, propane, and oil-fired water heaters and furnaces in garages should be protected from vehicle impact and should be at least 18 inches above floor level.

Surface Water Control and Landscaping

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✔️Unit 2 Review Questions
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IMPLICATIONS & STRATEGIES

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MEMORIZE CHEAT SHEET ( THE NUMBERS )