Hallelujah, the containers are on site!

I’d love to show you photos of all the angles of my new container house now it is on site, but the delightful thing is that most of it is hidden by the garden. Many of the pictures are of trees and shrubs with just a glimpse of container behind. You can see the whole house from the front where the view is, and it’s shown in the banner photo above.

Getting the containers into position while keeping a substantial garden intact was not a simple thing. I reckon I ended up with the best team in the business, both for the truck delivery and the crane. Adam’s team from Turner and Central Crane Services worked miracles to get the containers from the truck to the piers. Fifty tonne cranes don’t look that manoeuvrable but apparently they can turn tight corners quite well if they’re in the right hands, and this one inched it’s way off the driveway, down the little garden path, to a spot half way between the truck and the piers. I think I might be slightly oblivious to just how close we were to the maximum reach of the crane when it hefted the 6 tonne containers over the tree tops, but I’m happy to stay that way. Adam said not to worry they’d get it done, and they did.

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Setting up the crane in soggy ground near a garden retaining wall.
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The 50 tonne crane in position, with Adam from Turner and Central
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Crane in mid-lift. This gives an idea of how much garden everyone was working around!

Jodi Thompson from J & K Heavy Towing and Transport did some seriously talented driving to reverse the 12m containers down to the bottom of my driveway, with very little room to manoeuvre. A couple of other drivers had visited my site to give me a quote and said it wasn’t possible. Not only was there a blind reverse turn from a very narrow street involved but to add a bit more of a challenge there is a small garden right next to the road, directly opposite my driveway, which was right in the area where the truck needed to swing around. The garden now has large semi-trailer tread marks within 2mm of it, but is otherwise unscathed.

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The truck reversing into the driveway, neatly missing the neighbour’s garden bed by millimeters.
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The truck at the end of the driveway with a container being lifted.

We just had the wettest March since 1975 and then the rain didn’t realise it was April for a while so it kept on going. Delivery day followed the first good break in the weather but the ground was still soft and it’s a good thing we waited as long as we did – the crane only just got back out with the help of a few well-placed solid timber sleepers. I have a bit of landscaping to do to fill in the deep furrows it left in the driveway and path, but that’s a small price to pay.

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Lift off from the driveway – the truck pulled out to go and get the next container.
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A high lift over the trees.
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The first container going into place on the piers.

I am totally chuffed to finally have my house structure tucked away on site, and I can’t wait to get stuck into the rest of the build. I’m also pleased I chose this build method as anything else would have had much more impact on the lovely garden block.

The real fun is about to begin and I am now finally free from dodgy container fabrication companies.

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The first container in place, from behind showing the tree view through to the front.
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Container Number 3 going on top.
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A crane “dogman” with a fine sense of balance working on the roof of the first container.

If you read my last post, which was a frustrated vent about the performance of Port Shipping Containers, I have a relatively quick update for you. After some negotiation the Company Directors acknowledged they knew they were in breach of contract and didn’t care, they refused to release my containers until I paid in full. I offered several compromises including 10% payment after delivery (instead of the agreed 20% outlined in our contract), and a third party payment system where the final payment could be held independently until all parties were happy. Then I asked for payment by credit card, as that would give me a bit of protection via the visa charge back system if something was wrong. They said no to everything except payment by EFT, and decided to stay uncompromisingly unethical.

The company did a last quality check for me, where they picked up yet another mistake. We had actually picked this mistake up back in drawing stages and a correction had been identified then, but it was completely ignored during the build stage. They fixed it promptly this time, without arguing which was nice.

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The view from the garden path right near the containers. They can’t be seen at all from the street.
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The tree view from one side of the deck.

Then as a grand finale, as the one tarnish on an otherwise happy day of container delivery, Port had got the position of the bottom side rails wrong. This bit is rather important as the bottom side rails, along with the corner casts, are where the containers sit on the foundations. If they are not where they are supposed to be then the container might miss the foundations.

I checked the position measurements with Port when I was doing the foundations. Their measurements were way out, basically it looks like they didn’t check which type of bottom side rails the containers had and they gave me specs for the wrong type. So I now have a section where the side rail of one container is sitting only on an overhanging steel top plate not directly over a pier and it will have to be reinforced. The incompetence of their staff just never ends.

I am currently looking into whether it is worth the legal fees to try to recover some of my build costs from Port due to the extended delays, plus the cost of fixing the foundation. I’ll certainly be posting some reviews to give people fair warning – if anyone is looking for a container fabrication company I strongly recommend you look elsewhere and find a company capable of using a tape measure, reading the supplied specifications, and sticking to their own contract.

Overall, apart from what is hopefully the very last stuff up by Port containers, it was a very fine day and a great outcome.

The wheels get wobbly

The wheels have not fallen off, not by a long shot, but they did get a bit wobbly this week. Before you read on, this is a technical post about wall structure and cladding, so if you have something better to do with your weekend like a good book, a movie, or maybe watching grass grow then carry on with that. If you are interested in the nitty gritty then read on, but be warned, you might need to sit down with a gin and tonic at the end of this lot like I did.

I have put a moody mountains picture up the top of this blog post because it calms me, and reminds me why I am doing this. The project is progressing but I’d really like to get my DA in SOON.

Optimist that I am, I have been carrying on thinking that I have at least two options for my wall structure to meet BAL Flame Zone compliance. This week they both became a lot less certain, and probably more expensive. Darn you Flame Zone, darn you.

Option 1 bites the dust; well that’s a bit melodramatic, Option 1 bent down and tasted the dust and stood back up again, thinking about whether or not it would like to spend more time with the dust. After getting the NASH standard wall structure info (see previous post) I sent that to the company I am hoping will do my container build, and they said no worries we can build anything you want if you provide the specs, and something like that should only add about $2K to the cost of your build. Yes, $2K! So I thought right, we’re on.

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The lovely effect that dust can have, if used correctly.

The company has been amazingly helpful so far with such an out of the box build and a hundred emails and calls from me, and they are pretty busy developing a lot of cool new off-grid container homes. I’m fairly sure in this case they didn’t actually take a look at the NASH wall extract I sent before replying to my email in such an encouraging way, because when I then sent them the full house design and asked for a quote using that NASH wall structure, the first wheel went wobbly.

They recommended that I stay with the polyurethane spray foam insulation that they use as standard, because not only is it really effective, it also reduces the risk of condensation happening. Condensation can be an issue with the corrugated container steel if the corrugation gaps aren’t all filled by insulation. Normal flat batts are not so good. There might also be an issue with the type of internal framing they would have to add in to support the NASH wall structure in a container.

I can see their point but from what I have found so far, polyurethane foam is organic and therefore considered potentially combustible, so will not meet BAL FZ requirements. I am yet to see a BAL FZ approved wall system that doesn’t use mineral or glasswool insulation.

The condensation is also a risk but I reckon (being the builder architect that I am, NOT) that risk would be greatly reduced because of the thermal barrier in the NASH wall. Condensation happens due to the difference between the inside air temperature and the outside temperature – like if you sit in a vehicle with the heater on in winter and the windows up, and it fogs up the glass and drips moisture (not so much in these modern days with the aircon on though as that removes condensation).

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The evil that is condensation. Pic taken from here.

So if, from the inside of the house to the outside, you had just plasterboard then normal flat insulation batts then corrugated steel then the risk of condensation, and therefore corrosion of the steel, is high in extreme temperatures. Like the temperatures you get in winter in the upper Blue Mountains; warm heated house inside, minus 2 outside. However, the NASH wall system has from the inside to the outside; plasterboard, insulation, plasterboard, 20mm air gap (air is a good insulator), then the steel. So I am guessing/hoping the condensation risk would be far less as the temperature difference by the time you get to the steel would be minimal.

Maybe you could also drill tiny, less than 2mm holes in the bottom of the steel wall to allow more air mixing – but small enough not to allow ember attack because as we know from BAL FZ, embers grow up to be bigger than 2mm.

So this wall system is not written off yet, it’s just a matter of whether the container builders can adapt it to a container wall system, and how much it will cost. The walls would also end up being about 130mm thick, which is a bit of extra space to lose in an already tight space.

Option 2, INEX cladding. The magic silver bullet that, in my starry eyed optimistic state, looked like it was a standalone BAL FZ cladding solution. A silver-bullet-proof werewolf caught this bullet in it’s teeth and spat it back out. Being a tough little bullet it’s only partly damaged by the wolf’s teeth so maybe I can still use it, but it lost a lot of its sparkle.

Reading the INEX specs for use in bushfire zones it says “No fireproof plasterboard required” and that it gives FRL 60/60/60, double that required for BAL FZ. I really wanted that to mean that all you needed was the INEX cladding to meet BAL FZ requirements, without any other wall layers.

My bad. As with everything in BAL FZ, the INEX weatherboard was tested as a system, and that system included R 2.5 rockwool or glasswool insulation underneath it. So adding the INEX cladding onto a steel wall with polyurethane foam insulation under that will not match the approved BAL FZ specs.

An option here is looking at how much it will cost to add the insulation to the outside of the steel under the INEX, instead of having the poylurethane foam on the inside. And looking at the relative cost of this compared to other solutions. If it’s affordable, that would make for thinner walls inside the container and a bit more space.

So, I am back to getting some more quotes and information on feasibility from the experts, and we’ll see what the best and most affordable option is. A tent with a heater is looking pretty good at this stage. I miss my block of land, the view I don’t get to sit and look at yet, and the cool fresh mountain air.

Patience, persistence…and a bit more persistence…and some stubbornness for spice ; the essential recipe for building a container home in a Flame Zone. Mix thoroughly and roast slowly over the flames.