I looked at a picture of ice and water shield. It’s required to be installed on slopes of less than 8/12 where there are 3,500 or more degree days and where the edge of the roof to the inside of the exterior measures less than 300mm. What else do you wanna know?
This is a picture of a flat roof on a commercial building. This photo shows a large patched area where it routinely ponds. Additionally, there was no corrective drains or tapering of the deck to direct water to gutters and skuppers at the time of the inspection.
I reviewed an illustration, Attic Inspection Uploaded October 31, 2013. I noticed the inspectors trail through the insulation went both to his left and right, indicative of the inspector not replacing the insulation in the course of back tracking in the attic. This will allow for potential thermal bridging.
The siding should have 1 to 2 in. clearance from roof covering. The roof shingles appear to be performing as intended. Where siding is to close recommend a licensed roofer/contractor correct as needed.
Aluminum Wiring was used between 1965 and1973. Aluminum wiring was found to become defective faster then copper. Making it more dangerous in time. Homes wired with aluminum are 55 times more likely to reach fire hazard conditions then home wired with copper. Thus being a fire hazard inspectors should be able to identify this type of wiring
Roof inspection
This is a video of my foot that is in need of beingvreplaced.as you can see in the video it has passed it’s life expectancy and has several issues
The roof is a standing seam metal roof. It is attached to the decking with metal clips with screws. The metal panel is attached to the clip another panel panel with caulking or rubber seal i in the seams of the panel. Some type of sealer is used to seal the panels together to keep water out. The ends of the panel is attached at the bottom with screws.
The flashing to the top wood goes under the wood and on top of the panel to prevent water from entering the decking and wood.
This house has a hip roof which is steep and the panel is slick.
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Poor house keeping and design of home can cause the loss of lives. There are several egress areas that should be considered is a home. Windows and doors that are below ground, can not be egress route.
In the walls the fire blocks can b missing. The doors going to the garage end to the outside must be fire rated.
Inspection of the roof revealed that there was a double layer of plywood sheathing, no underlayment and no drip edge at the bottom of the roof. The double layer of sheathing has raised the level of the roof by ~1/2 inch, leaving exposed sheathing along the rakes because the drip edge is not tall enough to cover both layers of sheathing. The lack of drip edge along the bottom edge of the roof is causing the sheathing to be constantly wet and it is deteriorating. Recommend evaluation by a licensed roofing contractor and repair as needed.Article: Roofing Underlayment Types
This article describes the three basic types of underlayment, and the advantages or disadvantages of each. It also explains the relationship between the slope of a roof, and the best practices of underlayment installation associated with the slope. For instance, low slope roofs require an additional layer of underlayment (or much heavier underlayment), in order to protect the roof sheathing from water intrusion. Additionally, many of the asphalt-saturated felt underlayments are no longer available, so synthetic types are being produced. Underlayment installation methods have also evolved, so that new attachment methods are available for use in high-wind areas (plastic caps), which also reduce the potential for water intrusion. While some of the newer synthetic types of underlayment may appear to be excellent alternatives to asphalt-saturated felts, the roofing contractor and home inspector should be aware that these newer types may not be appropriate for use as underlayment, and may even void the manufacturer’s warranty for the roofing materials.
The roof has laminated shingles installed with open valleys. The upper level gutters do not drain onto the lower level shingles. The gutters and downspouts appear to be in good working condition.
Collar ties are actually Collar beams. They are intended to prevent rafter separation in the event of unbalanced loads. They are installed on every other rafter. The lack of these does not indicate a defect unless you know they are required by code.
Topic: IR and Thermal Imaging Reporting
Article Referenced: Thermal Imaging Reports
Inspection Gallery Album: Infrared
Although the investment is relatively heavy, thermal imaging is becoming a standard. More and more of my area’s inspectors are offering the service and many of them for free as a sales incentive. I think the use of this technology is an inevitable standard and I will be incorporating the technology into my inspections in the near future. The article and gallery allowed me to further understand the general implementation of this service. I plan to enroll in the provided Internachi training programs to further my understanding of how to use this technology.
Here’s a roof image from a recent home inspection that had good structure, the shingle layer looked great for the age (14 years old), edge flashing was installed properly. Basically no comments really, until I get on this side of the house where the guys from Dish TV installed their antenna and it isn’t properly fastened onto the roof. Upon inspection of the attic space, we noticed signs of water intrusion where the screws from the antenna are penetrating the rood sheating. We advise getting a roofer to fix the issue.
"Cool" Energy-Efficient Roofs
by Nick Gromicko and Kenton Shepard
Cool roofs are useful in the long run because of the energy savings they bring in when installed on a home. They do not absorb as much heat as regular roofs and that leads to a much lower temperature under the roof sheating and in the attic space and then further down into the home. They last longer and sometimes the utility offer rebates when someone gets these types of roofs installed. The most common type of cool-roof is achieved by using a type of coating that absorbs less of the infra-red spectrum of light, thus achieving the cooling effect.
This is a example of missing flashing .The roof looks new so it was most likely forgotten during installation.
Flashing helps direct water from seams and othe likely spots that it might acumulate’
Good places for such flashing is around roof vents,chimneys and where a wall might meet a roof such as this case.
I have researched three tab roofing and reasons for replacing asphalt shingles or three tab.It seam that if the roofing material is not the old or newer it might be more cost effective to do a spot repair or patch.It is also important to inspect rain gutters periodicly to make sure they are free of debris as to deflect water away from the roof.Also inspect rain gutter to make sure they are draining properly and not sagging and attached properly to the facia boards.
C.Reney
During the attic portion of the roof inspection (looking for proper nail penetration and structure) I observed the following.
One truss had been cut to make room for the AHU.
Approximately 5 Ft of truss web had been removed.
The location corresponded to an area of concave deflection on the roof surface.
Neither the owner or A/C installer had pulled a permit.
I recommended the buyer have the repair made. I further recommended the repair be approved by a professional engineer and a building department permit be pulled, the work inspected by the building department and the permit be closed as approved.
I looked in both the library and gallery.
Here in Florida about 80% of the roofs are some form of tile. There is a shortage of data about inspection techniques, particularly storm damage for mechanically fastened roofs.
I recommend inspectors conduct a literature search , to include the wind tunnel tests from FIU to get a better understanding of failure modes for these roofs.
I found I had to develop a failure modes and effects analysis to properly determine a roofs condition.