Saturday, July 16, 2011
Building Envelope and Mechanical Equipment study - Bill 8
The study will need to project out 30 years, the costs to maintain and replace critical components of the building.
The next step many would like to see is a law that will require Strata's to actually finance at least a portion of the expected costs with the monthly operating assessments. Some are calling for up to 50% of the costs identified in the study to be financed by monthly Strata fees.
The purpose is to finally give buyers an accurate reflection of the costs of owning multi-family and force the Strata to properly maintain the value of the building by forcing regular assessment and service.
Using the right materials in the right areas for the right purpose
- Eugene Emmanuel Violet-le-Duc
Thursday, June 23, 2011
House Exterior Cleaning - Pressure Wash Services
Many contractors offer services to pressure wash the exterior walls on homes. This is especially prevalent on stucco homes. In the worst case scenario, the contractor will even add a soap dispenser to the gun.
Pressure washing any building component is usually a bad idea. You are blowing water at high pressure at surfaces that are not water proof. This water often migrates below the cladding's surface where it can become trapped for weeks or even months in the wall assembly. The water will often migrate to large areas behind the cladding utilizing capillary action (water can travel in all directions when a small gap/crack is present). This trapped moisture can then start to deteriorate the building paper or wrap, change the properties of the paper or wrap (once these materials are wet for over an hour, they loose most of their ability to shed water - no protection during next rain storm). These actions then can lead to the underlying structure (Plywood/OSB sheathing) getting wet and starting to deteriorate. A secondary problem is that any part of the wall assembly that has been previously saturated tends to attract water in the future (even if it has completely dried out) lowering its defence during subsequent rain events. Finally, just the pressure itself can lead to mechanical damage of the wall components.
Adding soap to the mix really escalates the problems. Soap contains surfactants. These surfactants change the molecular makeup of building papers and wraps substantially reducing their effectiveness to shed water (on a permanent basis). You have now compromised the buildings sole defence against water ingress (the cladding is only considered a water shedding surface not a water resistant surface).
Most wall cladding can be cleaned with a simple brush and low pressure garden hose. For stucco, you might want to try specific cleaners formulated for this application. They are sprayed on, allowed to soak for minutes/hours and then rinsed off. You may also benefit from one of those car washing wands that attach to a garden hose and have a spinning head. Just stay away from the pressure washer. This includes trying to remove loose paint prior to re-painting. You will often create the problems mentioned above and the wood surfaces are often still wet (on the underside surface) when the cladding is re-painted leading to a paint job that will not last as blister form as the trapped moisture evaporates in the sun and causes a vapour bubble to form below the paint's surface.
Do not be duped by these contractors. Do your research and get informed. Say no thanks to any contractor who offers to pressure wash any part of your home's exterior.
Cedar Roof Maintenance - Pressure wash services
In the last week alone, just in my neighborhood, I have seen two contractors pressure washing roofs (one shake and one asphalt shingle). If you talk to any knowledgeable building envelope professional, they will cringe when you discuss this subject because this cleaning method often leaves behind a trail of destruction long after the contractor has left.
Lets look at each of these in detail. Bare in mind that most pressure washer contractors are like Tim Taylor from the popular TV show Home Improvement, it always makes sense to buy the biggest & baddest monster machine you can get your hands on. Translation - Lots of Pressure!
First the wood shake roof. Wood shakes are usually split. This results in the wood pieces separating from each other along the cell wall boundaries. The wood cell walls are much harder than the cell interior so this process leaves each shake with a hardened surface. This surface provides better water shedding capabilities and stands up better to UV degradation. Most pressure washers have more than enough pressure to strip away the cell wall leaving the softer cell interior. This cell interior absorbs water much easier and breaks down quicker under the sun's rays. The process also saturates the shake (often on both sides of the shake). The shake would not get this wet under normal rain conditions. As this work is normally done in sunny seasons, the top exposed side of the shake often dries quite quickly in the sun and wind, usually much faster than the bottom-hidden side of the shake. This results in stresses to the shake which often lead to cupping and eventually cracking. Now you need to call a roofer to flash all of these new cracks so that you have a properly lapped system again (do not have a cracked shake lining up over a shake seam in the row below). Now you also have a shake surface that is not as durable as the surface that was blasted off with the pressure washer.
The wood shingles fair even worse. These are almost always cut (not split) so the soft cell interiors are already exposed. It takes very little pressure to etch the wood material away. I have often seen roofs during inspections that have up to 1/4" blasted from their surface. They are also much more susceptible to cupping and cracking after a pressure washing incident.
There is also a secondary source of damage created by these contractors. Most wear some form of cleats while on the roof. Think of these cleats as two meat tenderizers on the bottom of their feet as they are producing the exact same effect. In both wood shingle and shakes, the contractor is peppering the surface full of holes that now lets the rain water penetrate to a much deeper depth which in turn accelerates the rate of deterioration of the roof.
On asphalt roofs, the damage created by pressure washers is obvious. A big pile of granules in the gutters at the bottom of the roof. Granules that are needed to protect the waterproofing asphalt substrate from being damaged by the Sun's UV rays. By removing these granules (and even a low pressure pressure-washer will), you are accelerating the deterioration of the roofing system.
Many of these contractors advise their unsuspecting clients that there services will extend the roof and some even offer a 'guarantee' (good luck trying to collect on it). In all of my experiences, the act of pressure washing a roof has significantly diminished the lifespan of the roof not extended it. I consider these contractors as incompetent at best and fraud artists at worst. It is time for the public to demand better. One step would be to require any contractor, who works on any part of your roof system, to be trained and certified by the Roofing Contractors Association of BC. That way, they would be required to follow the RCABC best practices guide even when it comes to maintaining a roof's surface. Homeowners can check out the RCABC Consumer Guide for instructions on how to properly maintain a cedar roof (pg 117).
Do not be duped by these contractors. Do your research and get informed. Say no thanks to any contractor who offers to pressure wash any part of your homes exterior.
Thursday, May 5, 2011
Home Inspections
We want to know what YOU think makes a good home inspection and what it is you hope to achieve by hiring a home inspector.
Comment on this post or send us an email at inspector@bchouseinspections.ca
Monday, March 14, 2011
Home Inspections and Infrared Cameras
Now any press for the home inspection industry is generally a good thing, but I am afraid the Mike Holmes inspection show has done more harm than good, in that it portrays the services of an inspector in an unrealistic way (but more on that on a later post - back to the topic).
A home inspection is best performed by an individual with a broad base of knowledge of all the systems and components in a home. The inspection is visual in nature, as we as inspectors are not authorized to perform destructive testing/investigation. The addition of an IR Camera would seem like a godsend for an inspector, as it would allow them to 'see' behind walls.
However, as with most things, it is not that easy. The cameras that most inspectors are buying are at the bottom end of the technology and cheap (<$5K). They are very low resolution and a very narrow scope of field with limited accuracy. Even a professional would be hard pressed to use these cameras in anything but the most basic and focused of investigations. The concept that a home inspector can use these to 'scope the house' is ludicrous. The technology does represent an excellent opportunity for a home owner or purchaser to asses a dwelling from the standpoint of thermal bridges (missing or poorly detailed insulation), air leakage (poorly detailed air barrier), and even moisture issues (rain leaks, plumbing leaks, & condensation in the walls). However a meaningful and accurate result can only be accomplished by using professional equipment (Still priced in the $10K range) and utilizing an inspector who has the required training to operate the camera, understands the building science that indicates where and how to look, and has the overall experience and field training to interpret what the camera is 'seeing'. For single family homes this means having at the very least, a Level 1 ASNT certification. If the inspector is providing IR inspection on Multi-Family or Commercial properties, they are then required to have a minimum Level 2 ASNT certification. This represents an additional $2-5K in training on top of the camera cost. And in order to stay current on their skills, an IR inspector has to use the technology at least weekly (preferably daily) and must continually update their education and equipment over time. In fact the certification program requires the inspectors to continually update their training as part of the certification program, which is why you want to ensure your IR inspector has a current certification certificate.
A typical non-trained home inspector would look at this photo and state that the upper windows are cooler than the bottom windows, when in fact the upper windows are reflecting the night sky radiation off the Low-E coatings on the window, due to the viewing angle of the camera and are most likely hotter than the bottom windows, due to the stack effect that would be present in the tower.
The facts are, that in order to perform quality Infrared inspections you must have the right equipment and right training behind you, and then you must perform the inspection under controlled conditions at the right time of the day. Criteria very few home inspectors have met, have knowledge of, or can even afford if they do.
The 'IR' services that many home inspectors are advertising are really more of a marketing gimmick, as opposed to providing the client any real level of additional security against liability. The services usually represent negligence at best (providing a service they are not trained to perform) and sometimes even fraud at the worst.
At this point SENWI will not be providing Infrared Services and will instead leave it to the experts. We will instead provide the best visual inspection we are capable of providing and when warranted, recommend an independent IR inspection follow up by a contractor who performs IR inspections as their major business activity, and who has a current Level 1 or Level 2 certification.
One source of professionally trained thermographers is City Green Solutions
Should you wish to discuss the issues of IR inspections with us further, please feel free to contact us at mailto:inspector@bchouseinspections.ca?subject=IR%20Inspections
So, do not fall victim to those that claim to provide 'IR Inspection' as part of their home inspection services, but do not have the equipment or training to provide this service competently. Look for these warning signs that the inspector does not have the proper training to perform an IR Inspection:
- They advise that they will be providing IR services during a brief 4 hour or less home inspection.
- They advise that they will be performing the IR portion of the inspection during daylight hours (After sunrise or before sunset is required for accurate readings).
- They advise that it will be easy to identify water related issues on the interior or exterior of the home. (nothing could be further from the truth)
- They advise they will only do an interior or exterior scan of the home (not both as is required for accurate interpretation).
- Ron Newport, Director of Institute of Infrared Thermography agrees with these sentiments and indicates a complete and thorough IR inspection of a standard single family residential dwelling will take in the order of 4-6 hours (this is just for the IR portion, the inspection has not performed any regular home inspection tasks yet). The City Green website indicates that their thermal imaging assessment overview takes on average - 2 hours.
- Most thermographers will take any scans of the exterior of the home prior to sun-up or after sunset. The whole purpose of using an IR camera is to look for temperature differences (indicated by the infrared light that radiates from an object) between various building components and trying to determine if they make sense. Once the sun is out, much of the 'evidence' is wiped out as the surfaces heat up under the sun's rays. This will also very quickly effect the readings on the inside face of exterior walls and so even interior scans are often done before the sun has reached the particular wall(s) of concern.
- Even a seasoned IR inspector, with the best equipment, will advise that finding moisture issues is one of the hardest tasks to perform with an IR camera. In order to perform this task, the technician usually has to artificially cause a significant temperature change to the structure of concern (often also accompanied by artificially lowering the air's humidity in the region). This investigation takes a very thorough knowledge of building science (something the vast majority of home inspectors due not have) and preparation, and even then can often not be conclusive.
- In order to get a true 'picture' of the situation, a good thermographer will scan both the interior and exterior of a dwelling to allow a comparison between the two surfaces and allow the development of a hypothesis of what is happening within the building structure at that location. Just think, would a home inspector ever inspect just the exterior or interior of a home and advise that a given building envelope was OK based on only seeing only half of it?
Sunday, February 13, 2011
Why does SENWI take so long?
I was recently at another inspection association's seminar. At a break I got to talking with one of that association's longest members and I mentioned that I can often take up to 300 photos when looking at a property. He laughed and said - "How long does that take?" I replied that I am often at a house for 5-7 hours. He made the typical claim of how long he had been in the field and that he is looking for the 'big ticket' items only and implied that any inspector worth a grain of salt could do that in under 3-1/2 hours.
SO why does SENWI take longer?
Well first of all, our clients are usually with us (something uncommon in the industry) during the inspection. This allows them to be better informed regarding the condition of the dwelling and does take on average a hour or two longer per inspection depending on their level of interest and questions. It allows the buyer to understand the defect because they have seen it with their own eyes.
Next, we are not looking for just the 'big ticket items'. Our reports present a majority of the conditions we find in the house that could be improved upon. Who are we, as inspectors, to decide up front what is important to you as a buyer? I have had many client choose not to buy a home not because of the dollar value of a problem, but because they were not willing to deal with a specific problem. That is and should be your prerogative as a buyer.
Lastly, I suspect that we, at SENWI, take a bit more time to look at things than inspectors who take less time on site. We open up most access panels, we will move a couch or chair to see behind, we will clear out a closet to get into an attic or crawlspace and we will look behind that picture to see what it may be hiding (where incidentally many electrical distribution panels are found). We almost always inspect a roof from its surface or multiple eaves-trough locations (many in the industry just look at it from grade with binoculars), we will crawl over a fence in order to get into an otherwise inaccessible point of the back yard. This all takes time and increases our ability to report on deficiencies which in turn reduces your liability as a buyer.
Could we inspect the roof from grade and get a good idea on the OVERALL condition and age? Yes, but what about all the smaller details that may not be a condition of the roof issue, but more where the roof meets other parts of the dwelling, locations that may be allowing water into the wall or roof cavities. These can only be examined from arm's length and I do not know anyone with arms long enough to reach a roof from the ground level.
So, yes we could perform our inspections without the buyer present, we could state that areas are not accessible because of storage or fences, we could look at roofs from grade, we could leave our cameras in our truck, we could fill out a pre-printed checklist on site (hard copy or software driven), … We would still meet the legal requirements of our contract and our certifying body's Standards of Inspection. But we do not want to, we want to provide a service that is better than that, one that we can be proud of, one that PROTECTS YOU - not us.
Monday, January 24, 2011
Industry Standards
Original Post:
ASTTBC recently submitted a brief to Consumer Protection BC calling for one set of standards and one regulating body for the home inspector industry in BC.
These views do not constitute an official view of any party outside of this inspector's and SENWI Services Inc.
Friday, January 21, 2011
The BC Institute of Property Inspectors (BCIPI)
On November 30, 2009, ASTTBC dissolved BCIPI (and removed the duly elected BCIPI Board) after many years of struggles between the Institute and ASTTBC over the rights to advocate on behalf of the inspector membership, communicate with the membership directly, and choose as a membership our own direction outside of certification.
The active portion of the BCIPI Membership had just voted with over 80% in favour of lobbying ASTTBC to dissolve the institute and support us as an independent business body with members still certified by ASTTBC (ASTTBC has always run the certification program for home and property inspectors and no changes to this arrangement were being requested). The desire was to form a business organization better able to market on behalf of its members in a timely manner and better able to communicate freely between members.
ASTTBC made the decision to dissolve the Institute without its Council even once meeting with the BCIPI Board at the time. The notice sent to the BCIPI membership by ASTTBC at the time, identified that the Institute would be re-formed the next day with representation assigned by ASTTBC (to be called the 'Steering Committee'). It is the opinion of many of the former BCIPI members, that you cannot have an Institute without a duly elected Board and a member approved Constitution (neither of which the current 'BCIPI' has after being formed over 1 year ago).
It is important for the public and government bodies to realize, that although this development has not effected the certification and practise of ASTTBC Certified home inspectors in any way, it has removed the voice that those home inspectors once had. While the actions of the Steering Committee and ASTTBC have benefited the former BCIPI inspectors (finally updated website, introduction of webinars, & Home Show marketing initiatives) over the last months, it is important to realize that the ASTTBC appointed committee represents ASTT and does not represent the voice of the inspectors, as the Committee have not been elected into their currently held positions by the members.
Licensed Home Inspectors
Update Jan 21, 2011
Since I first wrote this posting, in April of 2009, things have changed significantly in the home inspection industry. Now all three organizations (soon to be four) accredited by Consumer Protection BC, to certify and train home inspectors have virtually the same programs in place. All have an education requirement, all have a field training requirements, all have a Standards of Inspection that are almost identical to each other, and all have a requirement for continual education. All have a Code of Ethics and a conflict resolution program. They have to or they would not be accredited by CPBC which considers all of the points above the minimum set of requirements for licensing.
This is excellent progress and a direct result of licensing I feel (and I feel as a result of the pressures put on the industry by the former BCIPI). The down side is that it has led to a complacence in the public's mind. The public is lead to believe that all inspectors have been through these systems, have the same training and provide the same service. As such they feel that a home inspection is a commodity that can be shopped by price alone. Nothing could be further from the truth.
The facts are that most if not all associations have significant numbers of members that were accredited before current requirements were put in place. These members may have never had to take any courses or receive any field training. Yes they may have been doing the job for 5 yrs, 10 yrs, or even 15 yrs - but is it being done right? When licensing was put in place there were inspectors that joined ASTTBC (in order to get licensed) that had been performing home inspections for years. But when they took the field assessments they failed. They had never had the benefit of any type of passing down of knowledge from a more senior member of the industry.
There is also a vast difference between inspectors that receive a majority of the business through Realtor referrals and those that offer an independent service. The former usually provide a simplified check list style report right on site and often take 3 hours or less to inspect a single family home (1 hour or less for a Condo style apartment). This is the service expected by the agents and preferred by them because it does not cut in too much into the agent's schedule and often the limited time on site can mean many of the defects are not uncovered or reported on. An independent inspector who relies on word of mouth or past client referrals for their income, usually puts in a lot more effort into the process to protect you, the buyer and make sure you are satisfied. Most of us will spend 5-8 hours for a single family home (2.5 - 3 hours for a Condo apartment) and most of us provide a custom written narrative report with annotated photos at the end of the process. We do this because we feel that the report is the most important part of the process and that it needs to clearly identify ALL of the areas that could be improved with the dwelling and let you make an informed decision on what is important to you (other inspectors often make those decisions for you and only show a selection of the more severe defects). A select few of us even goes as far as identifying possible remediation plans to not only tell you the problem and the significance of the problem, but also possible ways to address so that you, as a buyer, can get a better feel for the cost of the defect (most reports just state there is a problem and to hire an XYZ professional to further investigate - which you as a buyer often do not have time to do before subject removal).
The bottom line is that although the industry is almost identical from association to association 'on paper', the actual service provided differs greatly from inspector to inspector. You as a buyer need to understand this and research what service you are getting for the price you are willing to pay and ask yourself - 'Will this service allow me to make an informed purchasing decision?'.
Original Post ***
In a press release dated January 30, 2009, the Ministry of Public Safety and Solicitor General announced that, as of March 31, 2009, all those providing home inspection services must be licensed. To verify your inspector is licensed, please ask to see their inspection certificate or search the BPCPA "Home Inspector Search" page.
The benefit of the licensing is that all those who provide home inspection services within the next 2 years will need to belong to an accredited inspection organization that ensures a standard of education, a standard of practise, a code of ethics, a requirement for continuing education, and a mechanism for handling customer or peer complaints. The licensing requirement stops those with no experience in the field from getting business cards and a flashlight and setting up a business. The requirements also stop those (carpenters, engineers, contractors, licensed plumbers, electricians, etc.) who may have training and experience in one or two building components, but lack the training required to inspect the dwelling as a whole, from providing inspection services.
Licensing inspectors is a great first step for the industry and provides an added layer of confidence in the system for the public. It is, however, still important for you to choose your home inspector wisely.
Only BCIPI inspectors certified by the ASTTBC are required to be fully trained before they offer services to you the consumer. BCIPI is unique in this practise. A new BCIPI inspector must pass a series of mentored field training exercises and supervised inspection assessments before they are authorized to provide services to the public. The new licensing does not yet require this from all organizations and allows those that have ONLY written a theory examination to be licensed and work unsupervised while gaining enough work experience to become “qualified” by their organization.
At SENWI, we feel that like most professional occupations and trades, some form of apprenticeship is required to hone a student’s skills and prepare them for practise in this field. Book smarts can only take a new inspector so far. A form of apprenticeship is needed to take them the rest of the way and should be a mandatory requirement for new inspectors coming into this industry.
You can rest assured knowing that all SENWI inspectors are fully qualified to provide their services to you.