Showing posts with label Potty House. Show all posts
Showing posts with label Potty House. Show all posts

Thursday, June 23, 2011

Polka Dot Gallows! - 6/23/11


I have started new posts several times in the past weeks- and never managed to get them finished to the point where they were ready to put up. Too many interruptions from the Universe, which seems sometimes to be looking to change its name to the OmniPerverse.

Besides that big storm which tracked all across our county, which tossed oak branches through the potty house roof, and which incidentally turned out to be a genuine tornado- we're having a very cool, soaking wet year so far. Making most of the processes on any farm slow and difficult; when not impossible.

The other reason for not finishing the posts- they're serious ones; and I really want to do them right, and well. Still working there.

Meanwhile. When I bump into some news that is just mind-bogglingly mind boggling, I do get the urge to share. The Polka Dot Gallows concept is related to the German phrase for mordant humor, often called "dark" humor in English. They call it "galgenhumor", literally "gallows humor". I figured as long as so much of our humor these days is coming from the gallows- we might as well go ahead and make the gallows a fun place. Hence my polka dots.

As you might guess, today's Polka Dot Gallows entries are from Japan. So much of the news there has just been purely horrifying, that I figure a little lightening up will be useful.

You'll be glad to know that Japan is now Safe To Visit! We know for sure!

Our Primary Source of Truth And Expertise has proclaimed it. Lady Gaga. Of course.

"Pop singer Lady Gaga has assured the world that Japan is safe to visit following the March 11th earthquake and nuclear accident."

Thank goodness, we can relax at last. If you find it a bit peculiar that the Japanese government is relying on pop singers for public relations expertise, you may want to consider Item Two for the Polka Dot Gallows today:

If you're wondering if Homer Simpson is actually in charge of nuclear power oversight in Japan, wonder no more. They've fired him; and replaced him with The Three Stooges. (And yes, you're correct, they're dead.)

See, Tepco has installed a nifty new "American made" filtering system, so they can filter out some of the incredibly radioactive crud in the water in their basements, and then, maybe, reuse that water to "cool" the corium still melting its way through their reactor floors.

Except, after several days; the nifty new filters are not working.

They think, today, they may have finally figured out why.

Basically - they hadn't turned it on. That was the "American built" system. Just incidentally, for more fun, they add "The test-run was interrupted on Tuesday after a pump to send water into French-made decontamination equipment stopped, also due to the wrong setting of a valve."


So we're in good hands, folks. Lady Gaga and The Three Stooges.

Hopefully there's someone a little more adept in charge in Nebraska right now. They're close enough to us that I am, in fact, worried. Although the Nuclear Regulatory Commission now has 6 people on site, instead of the normal 2; and are putting out press releases that they've "made extensive preparations" - I have yet to see any statement that the cooling systems of these plants were designed to run under water, with no electricity.

And do remember how forthcoming all the world governments have been, and the power companies, and the press, with information about malfunctioning reactors.

Monday, May 30, 2011

The THWASPCO Takes A Hit-


Part of the reason for my being a little quiet here; we got nailed by severe thunderstorm winds a bit more than a week ago. Like really severe; at first we were wondering if it was a tornado that hit.

I was inside the Little House with Smidgen, watching it come; no warnings severe enough to send us down into the cellar. It was really, really, impressive. Saw some big trees bending- double. Then they broke.

We've been spending a lot of time cleaning up; all the paths and roads in the woods have major trees down on them. And it keeps raining too, have you noticed?
One of the major hits- a couple of big oak branches came down right on top of the THWASPCO (That's "Three Hole Wind And Sun Powered Composting Outhouse" for any uninitiated.) That's Smidgen, walking down into the tangle right after the storm, investigating the damage with me.

It got clobbered. There was a big (5" thick) oak branch poking right through the roof; and even a 2 foot long section of 4" thick branch right inside on the floor- after having made its own hole in the roof on the way in. There are these hazards to living right in the woods. We knew it. In 30+ years, though, this is the first time we've had a building damaged by trees.

A new roof for the outhouse was not on the list of chores we'd been looking at; and also not in the budget.

But it's on the "urgent" chores list now, and budget too, whether there's money or not ("not" would be a good bet.)

Why the Universe feels it has to constantly be testing our resilience, I do not know. But it sometimes seems to be the Universe's favorite pastime.

Before the storm, we were wealthy. We had a permanent place for our poo. No worries; it goes there, rain or shine or snow, and it works.

Then, suddenly we were without a pot.

Well, without a roof for our pot, anyway. The basic structure was not damaged; we'll need new translucent fiberglas roofing (which, at 30 years, actually needed replacing anyway) and I think a purlin or two got cracked, but that's all.

With all the "spring rush" going on- wet soils like everywhere else slowing it all down- I'm guessing we'll be looking like a blue-tarp refugee camp for a while; maybe until autumn. We'll have to scare up a few dollars- and harder, a few days worth of time to get it done.

I mean, really, Universe. Was that necessary?

sigh.

Monday, January 21, 2008

sigh. Mel Brooks found out, too.

Mel made his first movie, The Producers; won an Oscar for Best Screenplay, and earned a little money at it.  Everybody's heard of that one these days, particularly since it was beautifully recycled into a wildly successful Broadway play version a few years ago.

What did he do with his earnings?  He made his next movie, of course.  Which flopped; totally.  Nobody I know has ever heard of it (until I tell them.)  It's quite possibly my absolute favorite movie (and I don't DO "favorites").  Brilliant.  Beautiful.  Chaplinesque humor, mixed with hard social commentary and primal human pathos.  Intelligent.  Moving.  Mel himself has a minor role as well as directs (spectacularly well) - and his line "Master?..." - gets me every time.  He can act.

This was The Twelve Chairs, easily available now on DVD from NetFlix etc.; but a few years ago, almost the only way you could get a copy was by begging- Mel, himself, to run you off a VHS copy.  He'd do it.  He knew how good it was, and was delighted when someone else knew.  But you DO have to have a measurable IQ to enjoy it.  Ergo - commercial flop.  Watch it if you possibly can- nobody I've ever talked into it has been disappointed.

Then (I imagine) Mel said to himself, "Ok, you don't want class, you want cheap commercial humor??  Fine, it's fart jokes and potty humor for you!"   And Blazing Saddles was born - and Mel made LOTS of money.  Bless him.

So, having given you my brilliant, original, and highly intelligent analysis of why we as a species cannot afford to design and build our world for perfect constant comfort- the primary response so far is a) silence, or b) a request for the "prurient" details of frigid potty function!  (apart from BillyM and Heather- bless you).

Ok.  As Milton Berle (or someone) always said - "If you're losing your audience; just drop your pants.  Works every time."  (or something like that).

Ok, you want prurient details?  Fine, I'll drop my pants.

:-)
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Rule 1 - WAIT, until you REALLY have to go, onesies or twosies.  This will make the process faster, a good idea.
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For #1, as in, pee.  In Farbelowzero weather, we still try to pee outside, when reasonable.  Usually that depends on the wind, more than the temperature.  15mph winds at -20 can lead to serious discomfort, pretty quick; when the mere air temperature would be unnoticeable otherwise.

As mentioned in the previous Potty House Posts, (and pics) pee is one of the biggest problems in composting toilet design- there's a lot of it, too much for a PDORS (poop digester of reasonable size) to hold.  You have to do something to evaporate it; like heat everything and run a fan.  Lots of energy used there.  Or- just don't pee much in the composting toilet.

The world would use far far less water, pipe, and energy if we could just get everyone to pee on a tree, whenever possible.  The trees love it, and then you don't have to flush, or pipe, or process, or dispose of.  Granted, this is not a reasonable option inside a city.  Alas.  But it's pretty reasonable for us.

#1 outside is easy for me, pretty much regardless of the conditions.  Just don't pee into the wind.  It's more trouble for ladies, of course.  We do go so far as to keep an area away from the house swept clear of snow, so ladies in residence can squat without dipping their nether regions into snowbanks.  It can be done.  If it's REALLY cold and windy, then ladies are welcome to pee in the THWASPCO; a little pee is no problem.

And it's probably good to remind visitors that "don't eat the yellow snow" is not a joke.
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To go, or not to go?  (hike out, that is)

It's a relative question.  The thing is, a chamber pot of any kind is extra work.  And stinky, and messy.  So far, the people living here have quickly come to the conclusion that they can stand a LOT of cold, before it's so cold they want a chamber pot.  Personally, the only time I've used one is when I'm really ill.  Otherwise- in Minus 40; I'll still walk out to the Potty House.

If you read the comments on the original posts, Spice left this: "I was pregnant in the winter, delivered Smidgen in Feburary. I had to troop out to the potty house on average of 10 times a day in January. It can be done, and it wasn't all that bad. In fact it kept me in better shape for labor!"  It's not that bad. 
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re: #2, as in poop-

I don't drop my pants all the way down.  Now you know, Chrunch, for your visualization pleasure.  (I do figure I owe you there, for all my own fun visualizing your well described gyrations...)

If it's a mere 20 below, I'll just drop trou, sit on the cherry seat, get well situated, then pull the pants back up to cover whatever can be covered.  Yes, I'm wearing a jacket, and a hat.  Bare hands, for dexterity, tucked inside the pants legs while waiting for critical operations.  I know, this sounds clumsy for folks used to doing these operations virtually unclothed- but it's not a big deal, and way more comfy to stay warm.  It can be surprisingly comfy; the THWASPCO is well supplied with good reading material, and even below zero, I can find myself so involved in some reading that I quit paying attention to the cold.  Until it reminds me.

On sunny days in late winter, when the potty house may be quite warm inside, we may indeed just skip putting on the coat- it's cozy in there.

If it's colder than that; like 30 below (coldest I've been here is -42°F, not including wind chill- coldest including wind was -102°F) - I'll probably lift the lid, and sit on the seat with my pants ON for about 30 seconds- to warm the seat- then proceed to drop.

It's really true, you just don't feel the cold in your behinder parts.  Good thing.  Likewise, however, gentlemen; your winky does not have extensive cold sensing capabilities.  I've never had this problem myself, but I had a friend in grad school who reported minor frostbite there when he was peeing outside during some really extreme weather- windchill of -60 or so.  He didn't realize it was happening- it's not sensitive.  To cold.  So be aware.  There's no windchill inside the Potty House, of course.

When it's time for the TP - (water is SO not going to work here) the pants go all the way down again, for easy access.  No big deal.

Typical follow-up on re-entering the actual Little House- jacket comes off, and you spend a minute or two backed up close to the woodstove, re-warming the fanny area, and hands.  Nice.
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There is another inobvious aspect to winter outhouse technique- coping with the poopsicle.

See- if it's really cold, the pit freezes.  So successive depositions of "material" will result in an ever-growing poop stalagmite, known here as the poopsicle.  Some foresight is required- if you wait too long, it can grow right up to... where you don't want it to be.

Hence, we have an old broken axhandle handy; and once every 2 weeks or so, I'll take that, reach it down the hole, and gently whack the frozen poopsicle sideways.  It'll crack off pretty easily (not a lot of tensile strength there) and just fall over, alleviating the problem for another couple weeks, or more, if the weather warms.  But you don't want to forget.
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The path to the Potty House we keep open not by shoveling, but by sweeping with a push-broom.  It's not a matter of removing the snow, but collapsing its structure- in a matter of 6 hours or so, its structure rearranges after being disturbed and it freezes very hard, and makes a good, non-slippery path.  In spring, the hard snow stays longer than the adjacent unpacked snow, and provides us a clean path through the spring mud- until it's too far gone, then the adjacent areas are usually past the mud phase, and can be walked on just fine until the main path is dry.

In case of very heavy snowfall, we'll likely walk to the potty house with snowshoes on a couple times, before sweeping.  That'll pack it down and firm the snow.  No shoveling.

So.  What else do you want to know?  :-)

Sunday, January 20, 2008

The THWASPCO/Potty House in Winter-


That's "Three-Hole Wind And Solar Powered Composting Outhouse", in case you missed that earlier.

Some time ago, I made a comment over at NoImpactMan, to the effect that "everybody going back to mud huts" IS indeed an "option".  

It took me quite a while to realize some of the participants there did not understand what I meant by that.  It's not that universal mud huts is an option we would CHOOSE, as a society.

It's that we could all to easily find ourselves living that way- if we don't fix some of the problems facing us.  The potential for societal collapse is that big.  We won't choose it- the universe will enforce it, if we continue to ignore physics.

Seemed obvious to me- pretty dumb (of ME), huh?

Wherever humans live, there are seasons; either cold/warm, or wet/dry, or light/dark, or calm/windy - etc.

One of the factors contributing to planetary overload is the increasing assumption that whatever dwelling/city you build; it should be built to serve your needs perfectly - 100% of the time.

I think we probably cannot afford it.  And I can tell you from long personal experience- it won't kill you to be hot, cold, wet, or dry, some of the time.

We look, for example, at the country farmer housing/village in China/India/Brazil- and the more sheltered among us are appalled.  My gosh, the houses are made out of... mud.  (Literally; or adobe, or rammed earth, or thatch...)  The streets aren't paved.  They use outhouses.  Each house has one lightbulb.  It's horrifying that humans should be forced to live this way!  We think.

They frequently don't think so, until they get a satellite tv link, and start watching re-runs of Dallas.

Then, since this is what the whole world tells them, they start to "need" paving, highways, indoor plumbing, refrigerators, and prefab plywood houses.  It's a disaster.  They have no recognizable "cash-flow" to pay for all this, of course; so they tend to abandon their 8,000 year old sustainable agriculture/polyculture pathways, and plant a "cash-crop" - like cotton, or opium.  So they can buy Spam, bagged rice from California...  etc.  One crop failure of the new cash crop and - they starve.

Sitting cosy in our Chicago condo, it's hard to realize- about HALF of all the humans on the planet still live this way.   World Bank data.

As far as I can decipher the bureaucratese, a mere 25% or so of the world lives on $1US (one dollar) per day; or less.  What's a little harder to discover is that another 25% or so lives on - TWICE that.  That is - $2US/day (two dollars) - or less.  Rich folks.

Life in the mud-hut world is far from bucolic; it entails occasional hunger, frequent lack of basic medicine, total lack of advanced medicine; short lives and too much hard work.  

Here's what I'm trying to get around to- the capital investment in our "modern" city/suburb infrastructure is utterly incomprehensible to anyone living on $2/day.  And a disproportionately large chunk of it goes to make our modern world "100%" functional, 100% of the year.

Highways are not a really good example to work with here; since a lot of the "frills" associated with fancy highways are also for safety - hard to argue against.  But the numbers are more easily accessible than most; and for most of us- the costs are surprising.  From GAO - (slide 16)

WSDOT found:
– Reported costs ranged from about $1 million to $8.5 million
per lane mile.
– The median reported cost was about $1.6 million per lane
mile.
– Five states reported costs significantly higher than other
states—ranging between about $3.1 million and $8.5 million
per lane mile. (See fig. 1.)

So- when your town builds one mile of 2 lane road- it tends to cost around $3.2 Million.  More if it's mountainous, or swampy.

You have any idea what a mud village could do with $3.2M?  Build a hospital?  (mud would be fine)  Educate 3 doctors?

Are all the roads in your neighborhood NECESSARY?  How many are there so people can get to work 10 minutes faster?  Or because there's one house way at the end of the road?

Staggering amounts of money are spent by us on infrastructure that is useful - for a small percentage of time; or a few people.  This is mostly unnoticed- and I think is not being discussed as a possible source of "saved" energy and resources.  Of COURSE it's my right to have an all weather road to my door!

Quite a few thinkers believe that one of the "answers" in the coming centuries to humanity's problems has to include a more even access to resources - water, fuel, money.  Besides the airy-fairy nonsense about fairness or justice - it's just practical.  Those damn poor people eventually get cranky, when they have nothing left to lose- and start banding together, and burning cities, and stuff.  (take a look at history, please)

3 billion people now live on less than $2/day.  How much more do they have to lose?

Analysis will show, I am quite confident, that the cost of providing services  "100%/24/7/52" -is usually about TWICE the cost of providing services "92%/23/7/46".  That's huge; and those resources are desperately needed elsewhere.

Would you be willing to put on a sweater for a couple weeks - so a village in India could have a doctor?  That's what it could come down to, in the centuries ahead.

SO - where the heck is the THWASPCO in all this blather?

Well.  It's a sanitation service that makes many people recoil in horror.  "I COULDN'T live like that!"  they'll say- and the most astonishing part to me; they believe it.  Never mind that a) all your great grandparents lived this way, and b) more than half the people on the planet still do.  Yes, you COULD.  You just don't know it.

Why do we have one?  

A) we couldn't afford a "normal" sanitation system- which would have cost about 6-8 times more. (Freeing resources for much more critical needs.) 

 B) once we got into the needs and design aspects- this system actually does an environmentally superior job of handling waste- by a long shot.

Oh, yah, and C)  luckily for us all, your tushy just doesn't have many "cold" sensors in it.  Sitting on a below-zero seat is like jumping into 50°F water- seems chilly for a couple moments, then you're used to it.  NO BIGGIE.

Basically, the THWASPCO provides perfectly comfortable services about 8 months of the year.  It's got substantial solar heat gain when the leaves are off- making spring and autumn pretty cozy.  It MAY get too hot for a few days in mid summer.  In midwinter- yeah, you notice it's not cozy.

So?  Cope.

And how, precisely does one use an outhouse in -20° weather?

Very, very quickly.

More tomorrow.  :-)

Saturday, January 19, 2008

there and back again.

Ok, so she wasn't generating chaos ALL the time.  Smidgen's hair got just long enough to gather into a ponytail a few days before the trip.



There is just something about a sleeping baby that is irresistible. I've got zillions of pics like this; of all 3 kids. Alas, the first 2 are on film, not digital.




But, I can catch them now.  Beelar came along on this trip, thank goodness; and cheerfully carried his little sister- more than I did, I confess.  She seems pretty content.

Then we got home- to this.


Yeeha.  This was the in-out thermometer this morning; 42°F INSIDE; -18° below Zero Outside (-28°C).

Looks like getting colder tonight.  In light of all the interest in our potty habits, I'm thinking of doing a detailed post on how, exactly, one uses an outhouse in really chilly weather...  :-)

  Crunchy has this ongoing thing about freezing one's behind off... and I now have a rep to maintain for advanced nuttiness, thanks to her...

:-)

Monday, May 21, 2007

Potty House Design

RC made a request for drawings/diagrams. I hope you'll forgive me, but I'm going to pass on that. For one thing, I don't have any already made up- and making them would be quite a lot of work. For another- I'm a little bit opposed to the idea of "recipes" for this kind of thing. I think they can stop people from thinking for themselves, and a Potty House is exactly the kind of project where you MUST do a lot of thinking- about your specific site, specific climates, and specific needs. (RC, it's not you I'm worried about- but other folks who will read this blog and get ideas. If you need evidence, you can take a look at some of the advice Colin is getting on "refrigeration" - cold milk?. Wow.)

So; I'd rather stick with design principles here. There are still a couple we haven't touched on, though most design stuff is outlined in the two previous posts basics and the one with pics, more, and Pics.

Looking at the pics, I can quickly see a couple aspects of our potty house you might well want to NOT copy- not because they don't work, but because they're pretty specific for our situation.

One is- all the glass on the south of the building. It's "frosted" glass, so you can't see through it (privacy being important to some people). It's certainly more work to install, and more expensive, than just putting in a wall. We need it here, for winter sun/heat. We're far enough north that the sun's angle changes hugely from winter to summer; RC, who lives in PR, has got very different sunlight parameters to deal with. Our Potty House is also IN the woods; under a couple big oak trees. Lots of shade in the summer- which is good for not frying anyone who needs to use it in the middle of the day- but you do need SOME solar heat gain in order to dry the pits. Finding the balance can be tricky.

For this particular building, probably 90% of our solar heat in the winter comes in through the south wall windows. Partly because of the low angle of the sun- but also because of the snow. Most of the time in winter there will be snow on the roof- plenty enough to prevent much light getting through that way. Luckily- when there is snow on the ground- we get a LOT more heat in through the south wall- from sun bouncing off the snow field. It's quite significant, and yes, I did figure on that before building.

2nd design aspect you may not want- you can see the roof is made of 2 different materials- part of it is asphalt shingle; part of it is corrugated translucent fiberglas. The junction is a pain in the neck; and prone to leaking, particularly during snow melt. We mostly wound up with it this way because I wanted the "turbine" "powered" air vent to go straight up, and out- and fitting an 18" pipe through the fiberglas would have been beyond my construction skills at the time. I find myself calling this air-duct/pipe the "stack", as in smokestack.

Other considerations about that roof- I wanted a substantial overhang over the entry door, because people have to use it in the rain; nicer to have a little cover while you negotiate the wet, slippery stones walkway, etc. So I opted for a frame roof there.

Why did I want a straight stack? Because bends in very low air-pressure ducts REALLY cut down on the air flow. And- the stack, you recall, is connected down into the pits, to pull wet stinky air out of the building. Using ambient wind- which is known to be uncertain. I really wanted to do everything I could to make the air flow easier- for example, the stack outside of the house is painted flat black- to absorb more solar heat, and heat the air in the stack further, making it "draw" better. (The paint is 20 years old; still looks black when it's wet, anyway.)

I'll toss out a general "sustainable -green" design principle here, which I have not seen formulated anywhere, but which I have come to completely believe in. If you are incorporating some feature which relies on a "passive" process- i.e.. it relies on physics or meteorology to work, not an electric motor- get the best advice you can on "how big" that passive feature should be- then build it twice that big. Three times bigger, if you can afford it.

"Passive" is great- and free. IF it works. And it's just in the nature of passive phenomena; like warm but not hot air rising up a chimney; that a LOT of the time, they WON'T work, if the least little thing goes wrong. Like a stray wind gust blowing down the stack, and stopping a slight air flow. Making passive features bigger gives the physics that's supposed to drive them much better odds of actually grabbing hold.

Ok, I expect to see that cited as "Greenpa's Aggressive Passive Design Principle" from now on.

Anyway- rather than build that complex roof, it might be easier/cheaper to just lead the stack out through a wall, and put a bend in it. It might also be smart to go with "active" design in a warm climate; like investing in a little solar powered fan, to really pull the air through and out. A little pricey, but nice; and the turbine, incidentally, does NOT pull air nearly as well as they like you to think; testing shows it works about as well as a ... hole in the roof. But it does keep the rain out.

AND-

Here is a major design concern we haven't touched on yet- bugs- and spiders- WILL get into the building, and into the stack. You need to design the stack so it's easy to clean out, once a year anyway- otherwise spider webs (and other webs) will build up in it to the point where you have no air flow; and everything will quit working.

It's not that you can't clean a stack with bends in it; but it sure is more difficult, and the bends invite webs.

Bugs. You need to build your potty house with bugs in mind- every step of the way. (And mice; etc.)

Big piles of poop attract lots of bugs/critters, and you really would rather not have them in the potty house with you.

So-

A) Build the building TIGHT. Remember that a mouse can squeeze through a 1/8" crack; and little bugs through cracks smaller than that. Don't leave cracks- allow for shrinkage and movement- and caulk whatever you can't close.

B) Build everything so it can be CLEANED. No matter how tight you make it; bugs/critters WILL get in (just not so freely). They'll come in the door, with you; even mice, who will sneak in past your feet at night. (Really.) So just keep muttering "I didn't want to be the only species on the planet, anyway.", and put things together so they can also be taken apart and cleaned out from time to time.

For example- the stack not only needs to be opened and "swept" once a year- I also put in an insect screen, to keep flies from just zooming down into the pits. The screen gets dirty/webby much faster than the stack as a whole; so make life easier on yourself and design it for easy access.

Now. Here we get into a difficult area for me. I have to confess something.

I didn't INTEND to tell you all a fib- but I did. I just forgot. My "green practices" list brags "no pesticides; EVER..." My confession- I do use some "fly spray" in the outhouse; probably about 5 times a year. Flies love poop. They will get in. You have to do something about them, or you'll got completely crazy. Ick. And while I'm confessing- we do use some of the same fly spray in the greenhouse, to control fungus gnats, which are lethal for us. The spray we use we buy at the farm store- it's designed and sold to control flies in "the milk room" and around dairy cows; pyrethrin based stuff.

I'd rather not use it- but so far it's the only realistic solution. If you're going to have a composting toilet, you've got to control flies. A couple of sprays of pyrethrin down into the pit when they appear inside usually stops them for a good month. It's not easy for them to get in; due to construction- but it will happen if people insist on opening doors.

Which gets us to the last point for today- the windows do NOT open- any of them. You DO need some ventilation options, however. No matter how well you balance things, you'll find yourself with days when it's just darn hot inside, and you wish it weren't. I made our windows unopenable mostly to simplify construction- and it also makes it easier to make the building fly-tight. And it's better for SEEING , and easier to clean- you don't have big insect screen areas constantly in front of your glass, and getting dirty. What we have instead are two screened "portholes" right up in the peak of the building, under the eaves. A much better place for ventilation, since that's where the hot air goes, and glass would be pointless, since nobody is tall enough to see out right there. The portholes have hinged wooden shutters that work from the inside; so if it's too hot, or two chilly, you can just reach up and change the amount of heat that's escaping or being retained in the main room.

We'll have a summing up post next; then on to the next subject. What have I left out?