Today's weather was pretty much your average day for early February--sunny, high temp 37 (3 C) up from a morning low of 24 (-3 C). The twist is that it's actually November 13! Yep, this is the coldest blast of arctic air this fall and a perfect day to evaluate my newly enclosed front porch.
The interior dimensions on the porch are 10' by 6' (3.0 x 1.8 meters). The shorter gable ends each have a storm door with fixed tempered glass side lights. The two bays on the long side are skinned with clear vinyl to create a greenhouse-like space. The porch faces west, and it begins warming up mid morning with the low-angle sun streaming through the shorter front door side. Temps continue to rise as the sun rotates around to the longer west facade. On this chilly day, the temp at 2:30 in the shade was 69 inside the porch, while it was 37 outside. Thirty degrees of free temperature boost is pretty darn cool... I mean hot! Time for a late lunch in the hammock chair (thanks Andy and Kim!)
The rather unique aspect of the porch is that the clear panels get swapped out for screens in the warmer months Whichever set isn't in use gets rolled up and stored in the garage attic, and the process takes about 20 minutes.
As an aside, this photo shows my new steps up from the driveway to the porch. Departing from my usual DIY approach, I hired a local mason to do the job, and I'm thrilled with the results.
The porch was always a key aspect of the design, and I regret that it's taken 2.5 years to get it finished. Both storm doors include roll-up screens so I can control the ventilation as easily as opening a window. This is particularly important in the swing seasons. In summer, I love being outside and bug-free. The porch roof serves to shade the west facade from the intense heat of the late afternoon sun, before it dips below the treeline.
In the winter, the space serves as an airlock to minimize the amount of cold air that comes into the house when the door is open. On those rare occasions when I'm home and it's warmer on the porch than inside, I can use a fan to blow that free heat inside. It's also great to dry my laundry on the porch to keep the clutter and moisture out of the living space since I don't use a dryer.
This fall I've been enjoying a quiet moment in the swinging chair around sunset to enjoy the birds and sky. Even 5-10 minutes makes for a nice mood adjustment after work. The porch is a relatively inexpensive space that has a significant benefit to the overall enjoyment and livability of the house.
Friday, November 15, 2019
Tuesday, January 15, 2019
How Much Did the Practice House Cost to Build?
Short answer: $74,767.
Long answer: that comes out to $178 per square foot, which is based on a floor
area of 420 s.f., which needs a little explaining. When measuring the area of loft space, my protocol is to count square footage wherever there
is 3’ of headroom or more (since I need 3’ to sit up straight). In the practice house, the loft measures 132
s.f., but that leaves 66 s.f. of uncounted space near the knee walls that
is finished and heated/cooled.
Also, these costs and the $178 per s.f. don’t account for
the value of my time. If I was employed as a semi-skilled construction contractor and I made
$20 per hour, my time would be worth $31,440 and the cost becomes $105,207 or
$253 per s.f. If I paid professionals to do what I did (let's assume they would take 3/4 as long to do the same amount of work), the cost works out to something like $129,000 or $307 per s.f.
It’s difficult to compare my cost to build to other homes,
but here are a few relevant thoughts;
·
Professionally built tiny
homes on wheels seem to run $75,000 to $80,000 for 350 s.f. with loft
·
I saw a premanufactured
tiny home for sale in 2017 discounted to $60,000 not including transport and foundation
·
Conventional homes in
MD seem to run about $150 per s.f. (or $63,000 for 420 s.f.) , but that is a
tough comparison because the more expensive kitchen and bath areas make up a
larger percentage of costs in a tiny home. Also, my house has a high performance shell, with a higher up-front cost versus lower operating costs.
·
Two internet sources listed
custom natural homes as costing roughly anywhere from $75 to $300 per s.f., so
I guess I fall near the high end of that range.
There are of course, a few particular choices I made that
drove up my costs as compared to the conventional construction that runs $150
per s.f.. The idea is that money spent
upfront would save time and hassle over the long term, and my goal was to never
have to touch the exterior for 50 years except to refresh the trim paint and recoat
the shingles. Collectively, these items
probably added about $10,000 or 15% to
the cost:
·
Metal roof rather than
asphalt shingles
·
Cedar shake siding rather
than cement board
·
Spray foam insulation rather than
rockwool bats
·
TrueExterior trim
rather than PVC (http://truexterior.com/)
·
Professionals to help
with siding and light straw clay when I was time-constrained
Of course, none of the costs in this analysis include the
price of land or utility extensions to the house, since those vary considerably
by location. And similar to what I noted
in my “Time to Build” post, there will be a little more money spent when I
enclose the porch. I acted
as my own architect and civil engineer, which probably saved me $6,000 or so. I also spend about $1,800 on tools and equipment
to supplement my existing arsenal so that I could do my own work.
Overall, I was anticipating the costs to come in lower than
they did, but I had zero prior experience with any sort of home-building, let
alone natural home-building. But on the
flip side, I ended up with a better home than I expected, and it is by far the
most comfortable and best suited to my lifestyle of anyplace I have ever lived. As I try to answer the age-old question, “was
it worth it?” I think the answer is yes, provided that the place turns out to
be as low-maintenance as I expect it to be.
How Much Time Did I Spend building?
By one measure, it took me 2 years plus a week to build the
house from breaking ground (July 8, 2015) to moving in July 15, 2017. Of course, the house wasn’t 100% done when I
moved in, and I have been picking away at interior trim, shelving, coat hooks,
etc. in between work, travel, and other projects.
In any case, I wanted to tally up the amount of time I spent
working on the house thus far. Sure, it’s
not the complete picture, so I suppose I’ll have to come back to this
discussion when I’ve completed all the major tasks. So the big number is…
1,572 hours!
If I’d been
working 40 hours a week, that comes out to 39.3 weeks or 9.4 months. That’s also about 70% of the total time spent
building the house if you total up all the time I paid for contractors to do
their thing (694.5 person-hours).
If you’re interested in drilling down into those numbers, check
out the table for a breakdown of that time by task, and I’ll try to put these
into context:
·
I would consider
myself to be semi-skilled labor. I accomplished
most tasks to a contractor-level of quality, without many mistakes, but I am certainly
much slower than a professional.
·
I was not able to work
a “full day” most of the time. That
leads to inefficiencies because it’s harder to maintain an efficient rhythm,
and if you have the same setup/cleanup time whether you work 4 hours or 9, you
get less accomplished working a partial day.
·
On average, I worked 5
hours on the days I made it to the house, but that varied from half an hour to
14.5 hours on the longest day. During
the build, I was working between ½ and ¾ time at my “real” job of civil
engineering, so that limited and broke up the time I spent at the Practice House. For better or worse, civil engineering was
the #1 priority and the Practice House was #2.
·
The percentage of time listed in the chart is based on the combination of my time and the contractors’. You can get a sense that I did most of the
natural building tasks, and the contractors did most of the conventional
construction tasks.
·
There is a hefty dose
of my learning curve involved in my numbers.
In particular, I spent way more time than I should have fixing cracks in
the first two layers of adobe floor because I didn’t get my clay/sand ratio
right.
·
I also wasn’t sure of
what level of finish I would be comfortable with. For example, I spent considerable time on the
finish coats of plaster, making them as flat and uniform as my patience would allow.
At the time, I was a little frustrated that they still seemed wavy and rough. But after stepping back and now living in the
place, I think they look fantastic! I probably
could have cut my time in half on the final layers in retrospect if I’d known that
the material is so forgiving of a rustic look and that I would enjoy the result.
One major caveat is that I’m still not “done”. The biggest pending project is to enclose the
front porch with screened panels in summer, and clear acrylic panels in the
winter. This will be a significant improvement to the use and
functionality of the house, so I plan to revisit these numbers once the porch
is finished.
Monday, January 14, 2019
Electric Expenses
I thought you all might enjoy knowing what I’ve spent on
electricity in a passive solar, highly insulated, and thermally massive compact
home. On average, it’s been $37.80 per
month over the 18 months I’ve lived in the Practice House:
That covers heating, cooling, cooking, and hot water—the house
uses no fossil fuels (and nothing that is explosive). These figures even include small projects and
lighting in my shop.
As an aside, I looked into adding a solar array on my new
garage to go net-zero, but a shading issue makes that payback time relatively
unattractive. For the short term, I
have signed up with a community based solar program, so I am buying power that
is being generated by solar panels located on a farm located nearby in Queen
Anne’s County. Once I build the main house
on the property (the Practice House is the guest house), I will re-evaluate
building my own solar array.
Snow Glacier on My Roof
One cool product on the Practice House that I really love
are the Rainhandlers, which take the place of traditional gutters. I’ll give you a technical discussion of rain
handlers below, but first I wanted to share pics of last night’s snow sheeting
off my metal roof, curving around the Rainhandlers, and freezing in place. Fun stuff!
There are so many downsides to gutters, but top of the list
for me is the PIA factor to clean them out, and the fact that they can hide or exacerbate
rot and other problems relating to the fascia trim at the edge of a roof. On a new structure, if you’re willing to
install them yourself (which is easy if your roof is easily accessible), they
are more affordable than traditional gutters as well.
With Rainhandlers, in a nutshell, rain that sheets off the
roof, hits a series of curved blades (similar to venetian blinds) and sprays
out in a fan pattern rather than dripping down in a straight line. This avoids creating a washout under the edge
of a roof that has no gutter, and it avoids concentrating flow from a
traditional gutter/downspout that may lead to erosion around your foundation. Spreading out roof runoff is an important
principle of low impact development, so in jurisdictions where houses are subject
to stormwater management regulations, this may reduce or eliminate the need to
build treatment practices like rain gardens.
For more info, check out rainhandler.com
(Incidentally, the closeup shot also shows off the fabulous
job the carpenters did with the trim under the roof overhangs.)
Wednesday, December 5, 2018
Coat Hooks
Sorry for the long silence! I've been distracted with other projects, lots of work, and a long sailing adventure, but I'm starting to devote some more time to finishing up the little details of the interior. Here is the coat rack I just installed:
The wood assembly is made of stained pine, which mimics the other trim in the house. Three metal hooks are screwed to the wood, and the whole assembly is screwed to the wall. This is not particularly noteworthy, but if offers an opportunity to talk about various procedures to hang things on the walls in a natural house.
Reminder: the interior walls have about 1/2" of clay plaster on top of 3.5" of Light Straw Clay, which is packed between conventional 2x4 studs. This is somewhat analogous to drywall in that if you want to hang something heavy, you'd better find a stud. Clay plaster by itself, like drywall, is limited in the weight it can safely support.
The coat rack may have to carry 15-20 pounds, so it is screwed into two studs. Fortunately, I was thinking ahead and marked all the stud locations before plastering over them. In my house, you just need to push up the ceiling panels, and my marks are visible in the plywood that lines the perimeter of the cavity between the first floor ceiling and attic floor. Use a plumb bob to project the marks down to the portion of the wall where you are looking to drive a screw. (Fortunately, I hired expert framers and this house is amazingly square, level and plumb!)
I used 2-inch long #8 screws that are counter-bored into the pine, meaning they bite 1" into the studs (1" bite + 1/2" of plaster + 1/2" of wood = a 2" screw). 1" of bury is more than really necessary, but 1 1/2" screws would have only had 1/2" of bury, and that would have left me a little nervous. I drilled a pilot hole for the screw and didn't bother with drilling a clearance bit through the plaster--it is soft enough that the screw drives right through the plaster with minimal effort.
I've only hung a few pictures and paintings where the weight is carried by the plaster. The super-light one is just hung on a nail. The medium one is on a standard hook nailed into the plaster, and the biggest, heavy painting has twin hooks nailed into 2 studs. My intuition says that the clay plaster has maybe 1/2 to 2/3 the carrying capacity of drywall, which means you should choose a bigger nail/hook than you would for a conventional wall.
There's nothing significant about any of that, except that I was a little nervous about nailing into the plaster, worrying that it might be brittle and crumble. Point #1 is that I did the nailing in the summer when the air is more humid and perhaps the clay is a softer and less brittle. Point #2 is that I used a small paintbrush to wet the wall where I was going to drive the nail. And I kept re-wetting it every 5 minutes or so for 20-30 minutes to pre-soften the clay. At this point ,the nails drove in quite easily, and I let the clay dry completely before hanging the art on the hook.
With this methodology, it took a little longer to hang the art than it would have with a conventional drywall wall, but there have been no oh-crap moments. If I had mock-up Light Straw Clay and drywal wall sections, I would do some destructive testing where I installed different size nails and hooks and hung weights on them until the fittings pulled out. Alas, I wasn't thinking ahead on that, so that will have to wait until the next project.
The wood assembly is made of stained pine, which mimics the other trim in the house. Three metal hooks are screwed to the wood, and the whole assembly is screwed to the wall. This is not particularly noteworthy, but if offers an opportunity to talk about various procedures to hang things on the walls in a natural house.
Reminder: the interior walls have about 1/2" of clay plaster on top of 3.5" of Light Straw Clay, which is packed between conventional 2x4 studs. This is somewhat analogous to drywall in that if you want to hang something heavy, you'd better find a stud. Clay plaster by itself, like drywall, is limited in the weight it can safely support.
The coat rack may have to carry 15-20 pounds, so it is screwed into two studs. Fortunately, I was thinking ahead and marked all the stud locations before plastering over them. In my house, you just need to push up the ceiling panels, and my marks are visible in the plywood that lines the perimeter of the cavity between the first floor ceiling and attic floor. Use a plumb bob to project the marks down to the portion of the wall where you are looking to drive a screw. (Fortunately, I hired expert framers and this house is amazingly square, level and plumb!)
I used 2-inch long #8 screws that are counter-bored into the pine, meaning they bite 1" into the studs (1" bite + 1/2" of plaster + 1/2" of wood = a 2" screw). 1" of bury is more than really necessary, but 1 1/2" screws would have only had 1/2" of bury, and that would have left me a little nervous. I drilled a pilot hole for the screw and didn't bother with drilling a clearance bit through the plaster--it is soft enough that the screw drives right through the plaster with minimal effort.
I've only hung a few pictures and paintings where the weight is carried by the plaster. The super-light one is just hung on a nail. The medium one is on a standard hook nailed into the plaster, and the biggest, heavy painting has twin hooks nailed into 2 studs. My intuition says that the clay plaster has maybe 1/2 to 2/3 the carrying capacity of drywall, which means you should choose a bigger nail/hook than you would for a conventional wall.
There's nothing significant about any of that, except that I was a little nervous about nailing into the plaster, worrying that it might be brittle and crumble. Point #1 is that I did the nailing in the summer when the air is more humid and perhaps the clay is a softer and less brittle. Point #2 is that I used a small paintbrush to wet the wall where I was going to drive the nail. And I kept re-wetting it every 5 minutes or so for 20-30 minutes to pre-soften the clay. At this point ,the nails drove in quite easily, and I let the clay dry completely before hanging the art on the hook.
With this methodology, it took a little longer to hang the art than it would have with a conventional drywall wall, but there have been no oh-crap moments. If I had mock-up Light Straw Clay and drywal wall sections, I would do some destructive testing where I installed different size nails and hooks and hung weights on them until the fittings pulled out. Alas, I wasn't thinking ahead on that, so that will have to wait until the next project.
Tuesday, September 26, 2017
Mostly Moved In
I moved in about two months ago and have been working on some of the small details: interior trim, shelves, shades, etc. I'm happy to report that I DO NOT FEEL CRAMPED! In part, that is due to my strategy of only moving in the things I need for the space I have available. Trying to downsize from my old cottage by just emptying the old place (800 sf plus attic) and trying to stuff it into 420 square feet would have resulted in an entirely different outcome. So please enjoy the following photos and consider what's done and what is yet to be finished:
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