Monday, 2 July 2012

My Ingredients for an Owner Built Home


Sorry for the delay in this posting.  The truth is, it is time for a confession - I am stuck!  I am also sorry in advance - this is a long one!

I have been in a hole I do not seem to be able to dig myself out of for many months now – 300 days to be exact.  You see, this was the day that I found out that the Municipality I lived in (District of North Vancouver - DNV) was not as ‘green’ as I had anticipated/hoped, and I was going to have a FSR (floor space ratio) issue with my fatter-better-insulated-walls.

But more on that in next month’s posting, I want to talk now about the ingredients I think are needed for an owner built home – some of which may surprise you (they did me). The basic ingredient list for your owner-build recipe might be something like:

•           Money
•           Skills or willingness/ability to learn
•           Component knowledge or willingness/ability to research
•           Health

Money – Obviously you are going to need a sizable quantity of cash or credit.  In my region this can be anywhere from $75/ft2 at the extreme low end, $130-$150 as an average value, and $200-$300/ft2 and up for a highly custom home with high end finishings.  These are the costs to have the home built 100% by others, any sweat equity that you put into the process can allow you to lower your costs or increase the quality of your finishings.  It is important to define a budget right at the beginning, as this will allow you to make decisions throughout the process as to how to best meet the budget and goals of your build and see, quite clearly, where it makes sense to put the money. We have an initial budget of $300K-$350K.

Skills – Sure, you have built a greenhouse or garden shed – but do you really have the skills needed to build your own house, including installing/constructing each of the components that make up a finished dwelling?  It is important to realize your limitations early in the process so that you can focus on what you do well at, pay others for what you really are poor at, and practice on what you probably know how to do but are not great at.  This will also allow you to get some training and practice in those areas to hone and polish your skills in these areas before you get to the ‘big tent’.

Knowledge – Skills are great, but if you do not know what you need to do, it really does not matter that you have the ability to do it. Knowledge can be gained in many ways and often at very little to no cost.  There is a vast array of free knowledge on the internet.  Building forums, manufacturers websites, and consumer review sites are just some of the resources available to you, at no or very little cost, on the net. There is then the local technical school courses available on most of the systems and components found within a home. These are often just a few hundred dollars for 6 or 12 weeks of instruction. They will give you a fundamental in the system of interest and show quickly areas where your knowledge may be weak.  One of my favourite sources of knowledge is to attend industry sponsored seminars.  The BC Building Envelope Council, Thermal Environmental Comfort Association, Home Protection Office, and the Electrical Inspectors Association of BC are my personal four favourite seminar sources.  You hear directly from industry experts what are the current challenges and solutions available in the marketplace.

Knowledge and skills are probably interchangeable as to which is more important in this list.  You really need both to proceed.  I personally listed skills as more important for me as this is probably the area I am weaker on and is harder to improve. You can of course have natural skills, but most skills are learned by watching others.  You usually need to physically see someone else doing it right to understand the steps to doing it right yourself. This, of course, is the fundamental element of ALL apprentice, articling, or residency type programs out there.  You Learn by Watching and then Practicing and Applying.

Knowledge can be read or researched.  It can be studied and reviewed.  This is for me fundamentally easier and more available than honing my skills. You can research on the internet, read books, take courses and, go to seminars. All of these will help you gain knowledge, but how do you gain skills?

I have found a few ways to do so. Courses that include hands on components are an excellent start.  The BCIT Building Envelope Lab is a great example of this type of course and has been invaluable to me. In it we have been physically practising the application and detailing of rain barriers, air barriers, flashing, window detailing, etc. It has reinforced that having knowledge alone without skills is not good enough. I was horrified when the window I thought I had so carefully detailed --- leaked! Another way to practice your skill is to volunteer at an organization like Habitat for Humanity. You can work on an actual site and be guided by pros in the various construction fields. I have also found that helping with neighbourhood projects has been a great benefit. You can learn from others or if you are at the top of the knowledge pole, can practice doing it right before tacking something much larger or more expensive.

Health – Obviously you need to be able to physically do the work.  While this is taken for granted for many, the requirement has delayed our build for years now.  We have had plans to ‘start’ at least 4 times over the last 6 years. Two lengthy illnesses (thyroid and back), each a year or more in duration, each 100% debilitating to the point that all normal life activities stopped during both, managed to derail all previous attempts to start. The back issue in particular, I had two bulged and torn discs, can haunt a person.  Is it going to hold out? Or will it fail part way through? I do not know the answer and instead will take a leap of faith and do everything I can to protect it during the build and strengthen it prior to the build. I have discussed this with my wife, who has a lot less confidence than I, and said, “I need to try and do this, if it fails we will just have to hire someone to finish the build”. This for me is probably the biggest wild card in the plans, and we just have to make an assumption that I will remain healthy or this project dies before it ever begins.

The above four ingredients were the ones I was expecting going into this process.  The next items were ones I did not anticipate needing in such large quantities:

            •           Organization
            •           Optimism
            •           Support
            •           Resolve

Organization – this has turned into the most needed skill of all. As I do not normally work in the construction industry, I needed to find ways to catalogue the huge volume of information I am amassing because I would not otherwise retain the information.  Whether it was a tip I saw on a TV show, an article I read, a product I saw on the way home one day, or an insight I gained at a seminar or class, this all needed to be stored in a way that was easily retrievable and in a format that was flexible for the different types of information I needed to store. I have gone through at least 6 iterations of this ‘knowledge database’.  I started with an Excel spreadsheet but that soon became unwieldy. I then transitioned to a Word document, but it became too difficult to navigate and add information. I started to build an Access database and realized quickly that it would be too rigid.

I was then exploring a new laptop I bought for my wife one day and came across a program from Microsoft called OneNote. My search was finally over!  This was a program that acted like a database, was searchable, infinitely flexible, had tabs along the top that I could use for all my major components groups (like plumbing, electrical, exterior, interior, …) and then each tab had ‘pages’ and ‘sub-pages’ down the side that would let me break up each major component into as many sub groups as I wanted. So for instance, I could take Exterior and break it up into Cladding (and break that up into main and feature sub-pages), Windows and Doors, Roof, Flashing, Water Resistant Barrier, Sealants, etc… Each page then allowed you to store pretty much anything you wanted in any format.  There was no structure, I could just click on any part of the page and start typing. I could embed videos, pictures, sketches, and hyperlinks - and of course text as well. I have been using it for over 6 months now and have not found a shortcoming for the type of data storage I need on this project.

Optimism – When everyone around you is telling you that “you are nuts”, you need to have a healthy dose of optimism to proceed down this path.  Most people I know are interested in the process and some of my professional colleagues actually support me. But those who know me the best doubt my ability to build this by myself.  I do plan on getting some extra hands at key stages where one set of hands just will not be able to lift something or hold it in place and secure it at the same time.  But for the vast majority of the build, I plan on performing the labour myself.  I will fully admit, many have tried and failed, but many have also tried and succeeded. So I need a very healthy helping of optimism to take me through this.

Support – This comes in many flavours.  Emotional support is something I crave and probably have the least amount of (and probably will not be able to increase as I do not have any one around who has the same ‘dream’ as I). As I stated above, most people in my close circle just think I am nuts. Technical support is also very important and an ingredient I feel I am blessed with. I have developed some great technical support relationships in the construction field, and feel well covered in terms of building envelope, building code, electrical, HVAC, general design, roofing, tile and brick, and interior layout. Many of my technical support networks could also most likely lead me to trades people should I ever get stuck (this allows me to have optimism that I have a chance of doing it myself).

Resolve – The last ingredient is probably the most important, and one I have not totally mastered yet. Because I have never attempted anything like this before, I do not have a good blue-print on how to proceed.  What needs to be done? When does it need to be done? How does it need to be done? How does one item tie into another? This list is endless and unless I break it down into one small chunk at a time, it is all-consuming and totally overwhelming! I need to figure this all out as I go, but the problem is, I am not one to jump into the deep end. I like to know where I am going before I start. I am known for endlessly researching a topic. I am having the most difficulty with this ingredient, and am stalled on making decisions and moving forward. I am always wanting to research just a little more, or consider one more alternative. Some of this is healthy and even required, but I guess I am so scared of screwing up, I am unable to start.

So I blame various setbacks (like the meeting I had with the district back in Sept 2011) on the delays in the design and engineering. I make excuses that the delay is actually a good thing because the codes are changing and I would have had to re-design the plans if I was already done at this stage. 

However, I think the real reason I find myself deep in a hole right now is because I am just too chicken to stick my head out and get moving!

Friday, 8 June 2012

OtterBox Cell Phone Cases

A sustainable product could partially be described as a durable product that is suitable for use.  I believe the OtterBox Cell Phone Case meets these criteria.

Monday, 21 May 2012

Lunacy of 'Green Building' Design


I just finished reading the humorous, direct, and in my opinion - very accurate assessment by Dr. Joseph Lstiburek of the dysfunctional separation of good building science and the current state of building design.

You can always count on Dr. Lstiburek to tell it the way it is and this article tells it straight.  Having recently completed both the BuildGreen and LEED AP training courses, I cannot agree more with Joe's points of view.  When things like 'day-lighting' are given more points and priority in a building design than ensuring a bullet proof and energy efficient building envelop, then the system has somehow been turned on its head and all the change is falling out of the pockets in terms of heat loss or gain through a poorly performing envelope.

Part of my journey through the 'sustainable neighbourhood' has been down flashy roads that promise all manner of wonderful things for me if I just use this particular flooring, or use ground up glass for my counter-tops.  Oh and how healthy I will be if I can just design a dwelling where I can see every leaf on every tree from every spot within that dwelling.

Now do not get me wrong, these are all important aspects of a good and sustainable building design.  But on scale of importance they are nearer the bottom.  If the basics like shedding water, keeping heat in or out, and ensuring the transfer of air is only through the holes YOU want, are not thought out and well executed, then what have you really achieved? You end up with a building that is much more expensive to build (putting in all the premium non-VOC finishing products, huge volumes of glazing, LED lighting, etc.) but will not pay you back with substantial and measurable energy savings.  And unless you are reducing your energy needs you are not fixing the planet no matter how many gallons of Volo paint you use on your project.

I have now realized that the roads I should travel on in the 'sustainable neighbourhood' are the narrow, darker lanes that talk about building science, continuous insulation, air barrier strategies, glazing ratios, building compactness, dew-point potentials, drying potentials, ...  While these roads are not as flashy as the others, they do provide the promise of a payback of my investment and the ability to make a real change to my impact on the planet.  The vendors along these roads all provide real-word methods for measuring their products performance and therefore payback.

I have come to see the beauty of these lanes.  They are narrow because that allows the most efficient use of land.  They are darker because they are conserving electricity and do not have flashy neon signs.  Just billboards providing defendable promises.  I recently had a discussion with a colleague over the aesthetics of a particular roof design on a high-rise we were driving past.  He has more of an artistic aptitude than I and was trying to get me to see the nice lines of the design and how it 'flowed' and was different than the traditional box look.  All I could see was that it had a butterfly design that would not adequately shed water and to me that was 'ugly'.

I believe this is the point that Dr. Lstiburek is is trying to make; until the design community, and population as a whole, start seeing bad building envelope design as ugly, we will all just be standing on our heads with the money pouring out of our pockets!

Saturday, 21 April 2012

Time to Realize a Dream


So what started all of this?  What is our need?  Why do I need to change anything?

Well, our 1954 bungalow has been showing its age for as long as we have owned it.  My wife and I have struggled with the appropriate way to move forward for years.   Do we renovate the existing structure, add on, or start from scratch?

Yes, we could just renovate the existing structure to make it ‘pretty’ for us and generally satisfy our ‘needs’, but this would not address the fact that many of the systems within the home are reaching the end of their service life.  So the renovation would need to be much more extensive and would have to include new domestic water supply and waste drains, new windows, insulating all exterior walls and increasing the insulation in the attic, replacement of the hydronic radiant piping going to the wall registers (which means replacement of all of the flooring).  If this amount of work is being done, I would be foolish to not also re-wire while I had the chance.  This would most likely set us back somewhere around $100K in today’s construction costs with me providing most of the labour.

But then we would still be left with a 1500 ft2 2 bedroom dwelling that does not represent the ‘highest and best use’ of the generous 73’ x 146’ property in an urban area where most buyers are young families needing 3-5 bedrooms.  As a result, whatever we did to the existing dwelling would likely not save it from the wrecking ball if we sold it.  I have a problem with sinking a sizable pot of money and resources into something that would still be thrown away if we ever sold.  It does not, to me, feel like a wise use of limited resources (both ours and the planets).

Aside form the ability to sell the dwelling; I also feel it is inappropriate to create a house that would only be sized for two people.  I have reviewed some of the concepts of architect Frank Lloyd Wright who did encourage homes to be built “just big enough” for the current occupants and “expandable” for an increase in occupant load.  However, when you look at the details, this does not seem to be practical method in my view.  It is very difficult (close to impossible and very expensive) to build an ‘expandable’ home and still meet best practices when it comes to building a bullet proof building enclosure not to mention a properly laid out and sized space and domestic heating system.  Unless the house is enlarged at the same time periods the existing mechanicals were worn out, I would be removing components that had life left and wasting the embodied energy that went into making those products.  I feel instead that multi-family dwellings are much more appropriate to build for 1 or 2 occupants and will easily fill this need in our society.

It is more appropriate, in my view, to design a single family dwelling that looks to the future to predict possible uses and is then built with as much flexibility as possible to meet those needs for the next 50 to100 years.  If this kind of structure is then designed in a durable and highly energy efficient design, I believe you have now achieved the lowest overall carbon footprint for not only your use of that dwelling, but also that of its future occupants.  You would have designed and built a legacy instead of a liability.

So, I need to build a new or heavily modified dwelling.  Now what?  Well, if I am going to build a home, then why not built it to incorporate the best of all of the various ‘sustainable’ programs currently available. Build it with foresight; looking at the ‘operating costs’ when making build decisions and not the short term ‘build costs’.  What are the operating paybacks to putting in better windows or higher levels of insulation? It is all fine and dandy to say I want an energy-efficient, low-carbon footprint, durable and sustainable home, but if I cannot afford to build it, it is not going to happen. 

We have a limited budget for building, and my wife does not completely share my passion for all things ‘sustainable’.  So throughout this process, I will need to make hard decisions on where the biggest bang for our buck will occur.  I will focus on making the long term components (the foresight I was talking about) of the home the best they can be (structure & building envelope) and only install ‘affordable’ short term components (plumbing & electrical fixtures, appliances, and furnishings).  These are all items that are renewed several times throughout a dwelling’s life and so can be upgraded at a later date as desired and as affordable. For the mid term components like the heating systems, I will try to design as efficient a system as possible that can be modified in the future to be even more efficient (like including solar capturing or solid fuel burning systems).

So it appears an exiting new chapter in my life is starting to unfold.  A realization of a dream that started 40+ years ago.  As I start down this road, I have realized my need for learning will never be quenched and that unless I analyze and challenge the decisions I make on a day-to-day basis, I will not be able to ensure that I make the right ones.

I would like to charge you, readers of this blog, to provide words of encouragement, advice, and even critique.  And in the meantime, I hope that each of you enjoys taking this ride with me as I document my personal journey in the realization of this amazing dream.

Tuesday, 20 March 2012

Tell the Senate to stop silencing environmental groups.

Please sign this petition today.

If we have any chance of repairing our environment we need to take serious steps now to reduce our carbon output.  We need to make the smart and hard choices.  We cannot continue to always choose the economy over protecting our planet or we will find that we run out of time (if we have not already) to make a meaningful difference. 

The oil sands are not a resource that we should be developing.  It is not about the horrible destruction this development is doing to the Alberta habitat.  It is not about how inefficient the process is or how wasteful this industry is to a precious resource - water.  

It is about the fact that this planet cannot handle the carbon that would be released if the oil reserve in these sands is burned in combustion engines.  Just because it is there does not mean it is right that we harvest it. 

We instead need to switch over to renewable energy now on a grand scale.  We need to stop subsidizing the petroleum industry and instead focus this vast volume of funds to developing new technologies and implementing those technologies already available.

Unless we take these steps and take them now, we stand little chance of healing our environment.

Monday, 19 March 2012

A New Education

We are finally getting closer to finding out what it is that I am trying to achieve in my re-build and why.  As you have read, this has been a process that has been building since childhood (excuse the pun) for me and has taken many roads to get to where I am today.  But it has been during the last 4+ years, as a home inspector, that I have finally started to focus on sustainable and durable dwellings in a more serious fashion.  In my work, I am seeing first hand the results of buildings that are poor at shedding water or have high air leakage rates; I am seeing buildings with rot, mould, and high energy bills.

Unlike my attitude out of high school, where I felt all learning was behind me, I was now a sponge looking to expand my knowledge of all things related to making a durable and efficient building.  And the more I learned, the more I realize I do not know.  My training has become particularly focused on the building envelope (or building enclosure as it is properly known). 

As I started pouring over internet articles and various industry seminars, I was learning how this one component, the building enclosure, was so entirely responsible for how a dwelling will perform long term.  It dictates the size of the heating system, the life span of the structure, the indoor air quality, maintenance and utility costs, and the health and happiness of the occupants.

I became a member of the BC Building Envelope Council and started to regularly attend their monthly lunch-and-learn seminars. I also became a member of Thermal Energy Comfort Association and have been attending their monthly dinner seminars which has helped me tie in the design of a heating system back to the building enclosure.

I then made an excellent decision and leapfrogged my learning forward by enrolling in the BCIT Building Envelope Performance course taught by Graham Finch of RDH (whom I consider to be one of the best building envelope gurus out there).  Between Graham’s scientific brilliance and James Bourget’s (also of RDH and Graham’s assistant in class) ‘ya but, this is how we do it in the real world”, I was finally able to connect all the dots (OK, at least most of them) and make sense of the information I had been amassing for the last 25 years.

Make sure the envelope is right and the rest will take care of itself.

This course reinforced that it was the introduction and advancement of insulation and NOT too much air-tightness that has led to many of the problems plaguing our dwellings today.  In class we were reminded that because air leakage is still occurring at a high rate in most structures built even today, and because the sheathing in the wall (or roof) assembly is now so much colder than it was in yesteryear, due to the ever increasing levels of insulation, we have created the perfect storm.  We have built in large cold condensing plates within the wall assembly (the exterior wall sheathing) and regularly introduce warm moist interior air into these assemblies by means of air leakage. And we are surprised that the wall and roof assemblies fail? Have you ever taken an ice-cold can of Coke and put in on the table? What forms on the outside surface of the can? Is the can leaking? Of course not, the surface of the can is below the dew-point temperature of the air inside the room and so the moisture has now condensed into a liquid on the side of the can. 

And then to add insult to injury, we still have the fact that we ignore that it rains in the Lower Mainland and have done very little until recently to keep bulk water out of our wall assemblies.   
Soapbox On.

To all the architects out there, DESIGN YOUR BUILDING WITH OVERHANGS!!!  To all the Municipalities out there, DON’T PENALIZE ARCHITECTS THAT DESIGN THEIR BUILDINGS WITH OVERHANGS!!!
Soapbox off.

I also started attending the Home Protection Office seminars, prepared and presented by Murray Frank (a passionate and very knowledgeable builder and educator who is always entertaining – hint, turn off your cell phone in his seminar or you owe him a beer!).  Murray starting showing us a grand new way to build; a method that was energy-efficient, durable, and straightforward to build.  This new building method focused on increasing thermal resistance to heat loss while at the same time concentrating on reducing dew point potentials within the wall cavities.  This building method is, of course, exterior-insulated wall assemblies. 

By placing the insulation outboard of the structural sheathing (or at least the vast majority), you allow the inboard face of the sheathing to remain at a consistent temperature with the interior of the dwelling, which then reduces the condensation potential.  You are also then able to place it in a way that reduces thermal bridging because you do not have a stick-frame interrupting the insulation every 16”.  This type of wall construction is prevalent in commercial and some multi-family dwellings but has never quite caught on in single-family dwellings.  But as the code was now going to require even higher levels of insulation in our dwelling assemblies, we were reaching a critical mass where if we continued to build by stuffing an ever-widening stick frame with pink batts, we were going to make it almost impossible to build a wall assembly that would not suffer from moisture-related issues.

I then enrolled in the week-long Canadian Passive House course which was another excellent course and my first official introduction to ‘Green Building’.  Passive House, or more appropriately Passivhaus, is a building method that concentrates ALL of its efforts on the Building Enclosure.  No ‘Green Washing', just a bullet-proof and air-tight building envelope.  In order to be certified, the energy requirements must be lowered to a tenth of what is built in North America today.  How would you like heating and electrical bills that are 10% of what you pay today?  I know I would.  The program achieves this by building very thick wall, floor, and roof assemblies with a large volume of insulation installed to prevent thermal bridging (can you say continuous insulation), and then installing very highly performing windows of the proper size and placement based on the elevation of the dwelling, in order to welcome free heat from the sun when we want it and to block it when we don’t (lots of windows on the South, fewer on the East, even fewer on the West and very few on the North).  This strategy is then complemented by a well designed ventilation system to provide the required air exchange for the occupants.  These 3 steps form the majority of the program.

The program has met with much resistance and even at times ridicule in North America.  Everyone laughs at the statement that these homes can be heated with a candle.  But I do know first hand, that of all the programs I have studied (more on a later blog), this is the only program that puts the building envelope in the forefront of the program and achieves significant (90%) reductions in energy use and greenhouse gas production.

Does the program go too far?  Many people that I respect say it does, and part of this journey for me is to determine and decide for myself if it does, and to what extent I may achieve a middle ground.

Tuesday, 13 March 2012

Name our House

I could use your help.  I would like to name the house/property we hope to build on.  One reason is because it seems all projects that are in some way different from the norm are named in this day and age.  But the main reason is because the property I grew up on was named.  It was called Gananakwa, which at the time I was told meant "Singing Waters" in some form of Native Indian dialect.  Now upon resent research, I have determined that this was probably a made up name, but I would like to name our new project with a similar theme.

So let me tell you a few features of the  property that may help:

  • There will most likely be running water features at the front and back of the dwelling.
  • The property is surrounded by 8 120ft+ tall cedars (fortunately they are generally to the North West to block the evening summer sun that would otherwise overheat the house)
  • The house will be built to a Passivhaus theme (ie. very well insulated and air tight with high performing windows)
  • We will have a very low slop roof (almost flat)
  • The theme of the design will be 'Modern West Coast' and will involve a lot of natural woods.
  • We are located in North Vancouver near the Capilano River but do not have a view (except will have partial view of mountains - Grouse - once we have a second floor.
  • The rear (west) and south side of the dwelling will be flower gardens, vegetable and fruit gardens, paths, arbours, waterfall, man made stream, pond, bridge, etc.  No lawns.
  • The property is flat.
I would appreciate any suggestions that you may all have and will provide a $50 gift certificate to the person that comes up with a name that we choose. There is no guarantee that we will choose any but if a suggestion helps us choose a name, then I will also pay out.  If you would like more info on the project to help in your selection, please contact me.  The name does not have to be in English as long as it is reasonably pronounceable by someone not speaking the language of the name.

I reserve the name "Singing Waters" and would love to hear your take on this choice.

I look forward to your input.