"General Roof Inspection" online training video course

Hello all,

Attached is a photo of a damaged area vent stack with a band-aided lead flashing. The integrity of a water intrusion resistant roof system is in large part dependent on the soundness of all the flashings incorporated in the roof system. Areas of roof penetrations, intersections where roof planes meet, roof to wall and any place in a roof system where distinct direction changes occur are especially venerable to water intrusion and rely heavily on the integrity and proper installation of flashing.

Hello all,

The two articles I chose to read for this assignment are Bathroom Ventilation Ducts and Fans and Green Roof Systems. The first was of interest to me because of the large amount of issues I have found to date regarding space venting. Of the inspections I have been on, one of the common denominator issues found have been with space venting, specifically, space venting not terminating to the outside. This issue may be deemed not significant by some or thought it may be overlooked by others. The second was of interest by curiosity, I don’t believe I will be inspecting a Green Roof System anytime soon, but, I have often thought of their existence over the years. One note worthy benefit is, a green roof adds insulating properties which are reflected in cooling and heating energy savings. One note worthy negative is, due to the added weight, typically upgrading the structural strength of the building is required, which of course requires $$$.

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While performing a visual walking inspection inside the attic space, signs of recent water leakage were present on plywood, Also “wet insulation” resulting from a possible roof leak found around the plumbing exhaust pipe. A moisture meter was used and readings were around 31% or “wet” indicating leak still exists.
Plumbing vent pipe need to be properly sealed around the perimeter of pipe boot flange where it has failed.

Temprano accidente de Edison
por Nick Gromicko y Kate Tarasenko

Muchos electricistas, estudiantes y aficionados a la historia saben que Thomas Edison se acredita por inventar la bombilla. De hecho, su papel en este caso fue mejorar un concepto que ya tenía 50 años. Lo que Edison hizo que dejó su marca en la invención fue desarrollar una segura, práctica y asequible luz eléctrica incandescente para uso domestico, así como para aplicaciones comerciales.

Después de mucho ensayo y error, de 1879, Edison creó una luz eléctrica usando un globo pequeño de vidrio con un filamento carbonizado de hilo de coser y la cantidad justa de vacío en la bombilla, alimentada por una corriente eléctrica baja. Su nuevo bombillo alumbro durante más de 12 horas antes que el filamento se quemara.

Una vez Edison coincide la combinación correcta de elementos que componen su nueva bombilla, la cuestión quedó en cómo energizarla apropiadamente. La primera planta centralizada estaba todavía a tres años de ser operacional, y este retraso condujo a algunas interesantes, si no peligrosas, demostraciones de luz generada por electricidad.

Uno de los clientes de Edison era el magnate de negocios americano William Henry Vanderbilt, cuya familia construyó el ferrocarril Central de Nueva York. Vanderbilt insistió en que Edison equipara la sala de su hogar con bombillas, que fueran accionadas por un generador que se instaló en el sótano para este propósito. Las luces alumbraron bien, aunque breve, durante la noche, cuando una casi tragedia ocurrió probablemente habitual en el mundo día a día de Edison de inventar, pero podría muy bien han descarrilado el curso de la historia como la conocemos. Notas de Edison describieron la escena:

"Sr. Vanderbilt, su esposa y algunos de sus hijas entró y estaban allí unos minutos cuando se produjo un incendio. La galería grande del cuadro fue forrada con tela de seda entretejida con malla metálica fina. De alguna manera, consiguió habían cruzados dos cables con malla, que se convirtió en al rojo vivo, y toda la pared era pronto a fuego.”

El problema, fue rápidamente determinado, el cableado no se había aislado correctamente. Cuando el cableado energizado hace contacto con las aplicaciones de oropel (cinta metálica dorada) en el papel de pared, estalló en llamas.

El fuego fue rápidamente extinguido y no hubo ningún herido. Desafortunadamente para el Sr. Vanderbilt, la histérica señora Vanderbilt, cuando supo que el generador utilizado para alimentar las bombillas estaba situado en el sótano, insistió en que se retirara. Ella se negó a pasar otra noche en la casa hasta que se cumpliera su demanda. Su alarma fue injustificada, ya que el generador en sí mismo era perfectamente seguro. El Sr. Vanderbilt se vio entonces obligado a ceder y lo retiró. No se sabe cuándo la señora Vanderbilt permitió otra vez que su hogar fuera iluminado con luz eléctrica.

Un sistema de distribución eléctrica que pudiera proporcionar energía segura, sostenible y asequible a luz eléctrica domiciliaria y empresarial sería el próximo desafío mayor en el desarrollo de la electricidad, pero, debido a los tempranos éxitos “trágicos” de Edison (no obstante, el fuego de la sala de Vanderbilt) y la demanda prácticamente instantánea de los consumidores, este desarrollo tecnológico siguiente iba por la vía rápida.

La primera planta centralizada entró en línea en 1882. Encuentra en Pearl Street en el bajo Manhattan, sirvió 59 casas con 110 voltios, costando a sus clientes cerca de 24 centavos de dólar por kilovatio-hora. La central eléctrica consumía 10 libras de carbón por hora, el equivalente de unos 138.000 BTU.

A finales de la década, pequeñas centrales de energía surgieron en las principales ciudades de los Estados Unidos, sirviendo un área de sólo unas pocas manzanas debido a las ineficiencias de energía de corriente directa. El cableado aéreo vino después, en 1883. Los métodos de pruebas de rendimiento y seguridad eléctrica también eran altos en la lista de tareas de Edison. El “mago de Menlo Park,” como era conocido (debido a sus casi 1.100 patentes en los Estados Unidos solamente), fue en gran parte responsable del desarrollo de las innovaciones que llevaron electricidad a los hogares e industria, en última instancia, transformando el mundo moderno.

Inspeccionar el sistema eléctrico es quizás el aspecto más peligroso al inspeccionar una vivienda, seguido de cerca por posibles peligros mientras se camina sobre un techo. Al inspeccionar la instalación eléctrica de una residencia, se deben tomar precauciones para protegerse de descargas eléctricas accidentales, sin dejar de mencionar los riegos de fuego eléctrico. Los inspectores también deben comprobar si existen componentes defectuosos, tomacorrientes sobrecargados, riesgos de tropiezo debido a cables de extensión eléctricos como también el correcto aislamiento de los cables dentro del hogar y en el servicio exterior. Tenga precaución contra estos peligros. Revise las normas de práctica residencial de InterNACHI y prepárese adecuadamente para una inspección.

I insepected the roof on this home. The shingles were lying flat without curled edges. They were not wavy nor worn. The sheeting was lying flat without waves or undulation. It has five hat vents and vented soffitts. It also has two gable vent louvers on either end. The roof seems free of hail damage or traffic wear.

For this assignment I decided to read the AFCI study guide and the Asbestos guide. AFCI are a nice safety device that detedcts changes in the wave created by the electric and interrupts arcs that can not only cause fire and damage but serious injury and death. They are required to be installed in bedrooms. As for Asbestos, it is an insulative and heat reducing product that was installed pretty much everywhere. It almost requires an act of congress to disturb and then must be done meticulously as not to disturb its composition. Repeated inhalation can lead to lung cancer and Meothelioma.

The inspected home was built with CBS along the first floor, and wood frame along the second floor. The exterior walls were covered with stucco, a very typical construction of homes built in South Florida.
There was a roof leak noted, coming from a small area above the garage. Upon further investigation, it appeared that the headwall flashing may not have been installed properly. Over time, moisture from heavy rains has penetrated the area behind the flashing causing moisture damage to the exterior stucco and the garage ceiling below. There is a small area that is inaccesible that may reveal more damage or decay when opened up from inside the garage.
The recommendation was to contact a roofer for a cost to cure. The home buyer claimed that the damage was minimal. The inspector had to inform the buyer that some decay may be present when repairs are underway, thus increasing repair costs.

Good mornig all,

attached is a photo of a roof that has a bad case of deferred maintenance.
There are multiple either mising or broken tiles. This is a bad situation for the house and the neighbors. The felt underlayment may help keep some water out of the atick but in south florida, roofs are subject to severe down pours daily. Not to mention this home is located in a hvhz which means exposure to high winds and rainfall amounts in the double digits. As for the neighbors, all of those pieces of loose tile, are potential missiles. Category 3 and possibly category 2 hurricane force wind would probably shred the rest of this face of the roof as the exposed areas of the deck will allow wind to penetrate and increase pressure under the cladding.

This post is for the “General Roof Inspection Course” class. The picture above is for an inspection on a home that is about a year old. The roof is good condition.

The roof system must work together as a whole system or it can be prone to failure. Weather it is the collar or rafter ties, the underlayment, flashing, nails, or staples all must be installed properly. Failure of any one part can effect another or the whole system.

Roof Inspection: Bulge noted in shingles on attached garage near ridge that will cause premature ware of shingles. Cause cannot be determined without a destructive inspection. Advise repair be made by qualified roofing contractor.

Reading and writing assignment:

Evaporative Coolers
by Nick Gromicko and Ethan Ward

Evaporative coolers are cheaper to buy and run than air conditioners but they have their limitations and drawbacks. They typically do not perform well in humid climates. They can also cause damage to interior components due to increased moisture added to the home. If not properly maintained they can also be harmful to ones health by introducing bacteria into the home.

House-Moving
by Nick Gromicko

While it can be a large undertaking to move a home it may be the best course of action. Sometimes they have to be moved for development or environmental hazards like flooding. Many factors come into play when moving a home like new code requirements, path of travel restrictions and contractor expense.

For the 4 point roof inspection upload, I took a picture of my roof decking and the outside edge of the roof. The roof decking is 7/16" osb board installed with 6d nails and held together with hclips. Upon inspection, I could see no water or black stains on the decking and was unable to detect any moisture with my meter. The edge of the roof picture was taken to ensure insulation was not clogging the soffit ventilation. Card board strips had been installed to ensure insulation was not blocking venitilation.

The two articles chosen for the General Roof 4 point were Collar Ties vs. Rafter Ties and H-Clips. Collar and rafter ties are both horizontal roof framing members under tension. A collar tie or collar beam is a minimum 1x4 board spaced 4 feet on center located in the upper third of the opposing gable rafters and is intended to resist separation from the ridge beam beam during times of an unbalanced load. ( snow / wind) A rafter tie is located in the lower third of opposing gable rafters that is intended to resist outward thrust of rafter underload. H-clips are small steel devices that fit snugly between wood panels in order to provide them with edge support. Their use is dependent upon local jurisdiction.

Higher than normal granule loss observed in various areas of the roof mostly on the ridge possibly from excessive foot traffic. The purpose of these mineral granules which are adhered to the roof shingle surface as part of the shingle manufacturing process, is to protect the shingle from sunlight, from UV light, and from the weather in general. Once the shingle substrate is exposed due to granule loss, that area of the shingle will deteriorate rapidly causing leaks. Recommend evaluation by roofing contractor for repairs or possible replacement of roof surface.

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Walking Roofs Safely

Inspecting the roof can be one of the most dangerous duties of a Home Inspector. Many inspectors as well as numerous trade professionals have been seriously injured or even killed due to improper ladder and roof safety practices. A little common sense can go a long way. Inspect your ladders frequently, be aware of power lines overhead especially with aluminum ladders, make sure your ladder is correctly placed and on firm and level footing, preferably with a place to tie off the top of the ladder, do not allow clients or others to climb your ladder, and never walk a roof that you are unsure about due to high slope, moisture, moss/ fungus, or debris/ loose roofing materials.

general roof inspection:

Up in the attic verifying the sheathing type 1/2 " OSB, type of fastners 8d, found the presence of H clips, and verify the length of roof nails as 1 1/4 inch.
Also verify the nail spacing for roof sheathing material with in 6 inches of each other.
No evidence of leakage.

Advantages of Solar Energy:

In correlation to a general roof inspection we are seeing more and more solar devices mounted on the rooftops here in the Sunshine State.
Along with these solar systems for electricity, hot water, attic exhaust fans, inspectors are seeing some interesting installs.
Different types of roof attachments and leaky penetrations into living spaces.

Roofing Underlayment Types:

New home construction seems to be rebounding a small bit in central Florida,
In the Larger developments that I see under construction many of the roof decks are now being covered with rubberized asphalt; and/ or non-bitumen synthetic. A more costly choice but fewer problems down the road. The cost of oil is still decent so the regular felt paper has not disappeared yet.

I took a photo of a kickout. The kickout shows the attention to detail the roofer put into this roof. It may look rather insignificant due to its size but it really does help divert water away from the house when it rains

I read the articles “Ceiling Fan Inspections” and “Central Humidifiers”. I’ve installed many ceiling fans and it never occurred to me until I read this article that I should look at making sure the fan is designed for standard 8ft ceilings. Central humidifiers are rare in south Texas so I’ve not seen one yet, but it is interesting to know the ailments that are caused by air that is humidified by improperly maintained central humidifiers and that the most affordable type is more susceptible to growing the organisms that cause these ailment.