Winter at Tenderbreak

WHAT HAVE WE BEEN UP TO?
We cleared vegetation off our dam wall and resolved to keep it free of trees. Roots from large trees can penetrate the wall in search of water and this could lead to an empty dam. At times we have made attempts to get the job done, but it was just too big.

However this year the fires did half of it for us. The photo shows a small section. All we had to do was grub out the burnt trunks of perhaps 200 saplings. It still took two full days but at least it’s done and all we have to do is to regularly cutback growth to prevent trees getting established. Time will tell if we can keep up our resolve to keep regrowth down.

Whilst doing this job we took the opportunity to create a meandering path which leads to the gate valve (previously we had to battle through dense vegetation to get there). It also leads to the gully below the dam providing a pleasant bushwalk.

Hothouse

Another job we have been intending to do for many years was to build a hot house. We have now collected a pile of second-hand material for this purpose and started excavating the site. Hopefully this project should be completed in the next few weeks.

WINTER GARDEN NEWS
We’ve harvested around 70kg spuds and 80 pumpkins (Butternuts, Jarrahdales, Queensland Blues and a handful of unknown heritage). We continue to pick lettuce, celery, carrots, beetroots, turnips, silverbeet, wong bok, chicory, parsnips, daikon and many herbs. The brassicas are all doing well. We are enjoying the taste of freshly picked brussel sprouts and will soon be able to tuck into caulies, cabbages and brocccoli. Our focus in winter is on garlic, onions, (both planted in May) and broadbeans (for food as well as a green manure crop).

Our passionfruit gave us a pleasant surprise. This was the first year it provided a crop and we have been patiently waiting for them to turn purple. In the end we gave up, tried one and found it to be ripe and sweet. Apparently we have a yellow fruiting variety and are now enjoying them “passionately”.

In the orchard we have started pruning fruit trees, divided and transplanted some rhubarb plants and have prepared spots for a few more fruit trees. We’ve also cut down a few older acacias, cut back others and used our mulcher to turn the prunings into a big pile of mulch.

GREAT NEWS FOR CHOOK OWNERS

David is a woodworker friend of ours, who manufactures and sells a variety of wooden toys and other products. For some time he has been working on a chook feeder design that will prevent birds, rats and mice from stealing the chook food. We are pleased to announce that he has now developed a bird, rat and mouse proof Contented Chook Feeder.

The chook food is placed in a hopper which is covered by a lid. When the chooks step on a flat plate, a clever lever mechanism lifts the lid giving chooks access to the food. The storage hopper is large enough to store several kilos of food, allowing owners to go away for a weekend in the safe knowledge that their chooks will have a supply of food available. Of course they will also need a supply of clean water.

It takes around 2 weeks for chooks to learn how the feeder works and to get comfortable with the device. Two or three chooks can eat together, but it is also suitable for use with larger numbers of birds. We use our unit to feed 12 hens by having at least 2 days supply of feed available in the unit. The result is that hens go to the feeder when they are hungry- usually one or two at any one time.

The feeder needs to be kept under cover. This is partly to preserve the timber components, but also to ensure dampness does not get into the chook food. If feeders are left exposed to the elements the chook food can absorb moisture and go mouldy.

The units are individually handmade and there is quite a bit of work in each one. For these reasons David can only make a limited number each week, subsequently there will a short wait for orders to be filled.
David has just commenced manufacturing these units, and orders or expressions of interest can be placed with us at our Healesville Organic Market stall (Outside the old railway station every Saturday morning). We have a demo model on display at the market. If you would like more information contact us, at tenderbreak@bigpond.com and we can email more details and extra photos. Another alternative is to ring David on mob. 0420 528 606.

Some of his other great products include possum boxes, a great little art stool with built in blackboard, wooden hobby horses, and many other educational toys

Would We Do It Again?

Would we do it again? No, not at our age now. We have done it once, enjoyed the journey and now we are happy to live out our days enjoying the fruit of our labour. However if it was a question of the clock being wound back would we go down the owner builder path again? We certainly would. We thoroughly recommend that everyone at least consider the owner building process. If you do, we found the following helpful

· Undertaking some major renovation tasks at our previous house provided us with some building experience
· Choosing subcontractors wisely (recommendations are useful). The cheapest is not always the best. Look after subcontractors (cups of tea etc). A good relationship will often yield good advice and valuable information. We may have just been lucky but every one of our subcontractors did an excellent job, fitted in with us and were very helpful. Many contractors are happy for you to reduce costs by doing some of the work yourself.
· Having access to paid long service leave enabled a lot of work to be completed in a shorter period of time
· We contracted a qualified builder (Rod Sheppard) to help us erect the frame, and we worked as his labourers. This saved us money, gave us the chance to learn skills on the job, and meant this complex stage was completed in a quarter of the time it would have taken us to do by ourselves.
· Attend as many house tours as you can, to get ideas for your own project and to learn from other people’s experiences.
· Publications such as Earth Garden, Renew Magazine, Grass Roots and Owner Builder frequently have useful articles and useful contacts. These and many helpful books can be found in local libraries.
· Improve your bbq skills so that friends look forward to visiting (and helping when you need an extra hand). This doesn’t always work, but it’s worth a try.
· Learn as much as you can about good design. By this we don’t mean the so called “good style” demonstrated in coffee table magazines, but design that works for you and the planet over the long term.

In conclusion we recommend the completion of a Permaculture Design Certificate. This course introduces all the basic principles and concepts needed to develop plans for an energy efficient, environmentally friendly house which integrates with other infrastructure.

Here is a list of tradesmen/contractors we used or know, and whom we would happily recommend:
· Rod Sheppard - Marysville –survived the fires (Builder, building designer, draughtsman, building timber supplier) Top photo
· Kevin Jones -Chirnside Park (Very skilled and knowledgeable. Did our excavations, driveways and dams) Bottom photo
· Bill Hayes -Lilydale (Plumber & House fire defence sprinkler systems)
· Stephen Cook- Glen Iris (Top class Electrician)
· Glen Morris of SolarQuip Healesville (Solar Supplier & Installer)
· Regis Bezencon Healesville (Solar Supplier & Installer)
· Janelle Murphy of Australian 5Star -Bayswater (Energy Rater who will work through the process with clients, and Insulation consultant)
· Alan Duke of A&A Wormfarm Waste Systems - Hastings. Disposal of all grey and black waste water. Middle photo

Owner Building - Does it save money?

Building your own home can save a lot of money, but there are pitfalls and traps for the unwary. Many houses have been seriously damaged because of inadequate termite protection. Poor foundations or mortar mixes have caused brick walls to crack. Financial institutions may make life hard for owner builders. Subcontractors can be a wonderful help or they can cause a myriad of problems. There are dozens of things that can go wrong with such a large and complex undertaking. Even professional builders occasionally end up in disastrous situations.

We have learned a couple of big lessons on our journey. Building a house is a far bigger project than we imagined. Instead of taking 1 or 2 years, it is now 10 years since we began and we are still finishing the place off. We completed 75% of it within 2 years (enough to get our occupancy permit) and then got distracted by our real love- developing our gardens, orchard etc. From this though, we learned that enjoying the journey is far more important than reaching the destination.

Building is also much more expensive than we thought. As owner builders there is no fixed price contract. Generally you pay as you go, and boy do you pay. Perhaps we were naive, but our total costs were over double what we imagined they would be. This was partly because of lack of knowledge (lack of research). What is particularly easy to overlook is the myriad of small things that by themselves don’t seem much (eg bolts, tiles, taps, nails, paint, door knobs, locks, window furnishings etc.) Budget increases were also partly due to inflation. Our plans were approved in 1997, but by the time we started building in 1999 inflation had increased prices. On top of this, the newly introduced GST increased prices a further 10% by the time we were ready to purchase most of our major fittings.

Obviously owner building has potential to save the cost of all the labour that owners put into the job. There are also other possible savings to be gained from paying as you go. If you can get away with a lower (or no) bank loan, you avoid paying large amounts in interest. The downside is that if you lack tradesman skills, the job takes much longer.

ARE OWNER BUILT HOUSES CHEAP?
As described above, savings are possible, but total costs depend more on the size of the house. Labour costs are only a small proportion of construction costs. However I have read articles in Owner Builder magazine where people have built small cottages for under $20,000. These people have usually used second hand and lightweight materials in their construction. Although mudbricks can be low cost if you make them yourself, your pocket suffers when you pay for the slab, which needs very strong beams to support the weight of the walls.

The cheapest form of owner building is to buy an established house, get it transported to your land and then renovate and retrofit it to meet your needs. A friend of ours did this, used contractors to do most of the reconstruction work, and saved a good deal of money. We’ll do a post on her experience soon.

House Design Details

Once we had decided on a mudbrick house, the next stage was to sort out the nitty gritty of design. We drew up plans ourselves, taking care to integrate as many of our criteria as possible. The whole process was a matter of compromise and adjustment and aimed at reaching a final result which would best meet our needs, taking into account factors such as cost, personal preference and perceived significance, to reach what we considered the best acceptable outcome.

HOUSE LAYOUT
The house is basically rectangular in shape with kitchen, lounge and master bedroom to the north with large windows giving a view over our front yard, dam and down the drive. On the southern side are 2 other bedrooms, family room, laundry, bathroom and toilet. There are cathedral ceilings throughout, except for the utility areas which have a lower ceiling to allow for an attic space above. The kitchen, lounge and family room are open plan, which has proved very useful when we are hosting large groups (we’ve had up to 80 people inside).

SOME PARTICULAR FEATURES
THERMAL MASS
Thermal mass provided by mudbrick walls, concrete slab and earth sheltered eastern wall heats and cools slowly, acting to moderate the internal temperature and making the home comfortable to live in all year round. The wood heater is only necessary on the coldest of days, but is used to create a ‘cosy’ atmosphere on other days.

VENTILATION
Cross ventilation is obtained via windows to south and north in our open plan design. Vertical ventilation is created by low air intake from vents and windows and high air exit points in the clerestorey and high vents.

STOVE & HOT WATER SERVICE CUPBOARD
A Stanley Wood Stove is our main cooking appliance, heats all our water and provides some heating to the house. The flue passes through the wall into our HWS cupboard. This reduces the amount of heat coming from the stove in summer and makes the HWS area ideal for use as a drying cupboard. The hot water supply is gravity fed to taps using a 5m head from the header tank located within the ceiling space.

RENEWABLE TIMBER
We’ve endeavoured to use natural materials to minimise chemical release from glues, plastics etc. Radial sawn timber is used extensively internally and externally as a wall cladding above windows and doors. The curves of the boards are perfect match for the flowing lines of the mudbrick. Radial sawn timber is a renewable resource, aesthetic and the milling process uses the whole log with little waste (unlike square cut boards).
Cypress macrocarpa is used for the frame. This is a plantation grown timber which is easy to work with, comparatively light, and contains oils that give it some resistance to insect attack.

EXTERNAL EAVES
These have been constructed to exclude summer sun but allow deep penetration into the house by the lower winter sun. They also protect the mudbrick walls from excessive rain.

STORAGE AREAS
Large built-in-robes provide storage space in each bedroom, a walk in pantry will have extensive specialised shelving and storage areas (for storing produce, home-made products etc.) and the roof space above wet areas has been built into an attic. We plan to build a cool cupboard in the pantry to negate the need for larger refrigerator.

GREY AND BLACK WATER WORM PROCESSING SYSTEM
The “A&A Wormfarm Waste System" processes our “grey and black” water. The water and solids flow into a below ground tank by gravity. A filter in the base holds back the solids which are broken down by aerobic microbes and worm activity. Liquids containing worm castings and minute particles of solids are pumped to absorption trenches. In the future, the liquids will be filtered through reed beds. The captured nutrients will be used to grow biomass as an additional source of composting material and the filtered water will irrigate fruit and nut trees.

IS THE DESIGN EFFECTIVE?
After chatting to a qualified energy rater, we believe that our design would not reach the 5 star energy rating that has been in use for the past couple of years. If this is the case, it is proof that the current computer program used to rate houses is unsatisfactory as its calculations rely too much on insulation qualities and do not consider the full benefits of thermal mass.

The thermal mass in the house maintains comfortable temperatures year round. In winter, it rarely gets below 16⁰C, even when there are frosts outside (the Yarra Valley is known for heavy frosts). We generally start using the wood heater occasionally in May. It gets more use from June to late August (usually just in the evenings) and we only use it in spring if there happens to be an extra cold snap.

In summer, the temperature rarely gets above 30⁰C, and this should be improved once we install a vine covered pergola along the northern wall. Most of the time house temperatures hover around 20º. In terms of function and pleasant living environment the house performs extremely well. Every room is well lit and “airy” and the aesthetic qualities of the building materials are pleasant to the eye. All living areas have good outlook over surrounding gardens and bush allowing us to enjoy the natural attributes of our environment.

A Mudbrick Adventure

We promised to do this post about our house design way back in October last year. (Recently Geoff from Flood Street Farmlet - http://floodstreetfarmlet.blogspot.com/ reminded us about this.) It's a convoluted tale so we will start at the beginning and spend the next few posts filling in details.

We spent several years pondering our house design and considered a wide range of materials and housing styles, ranging from the traditional Australian homestead with verandas all round, through to concrete earth-covered domes. To help us clarify our ideas, we spent about 12 months going on every alternative house tour we could find. This was a great way to explore possibilities. During this period we drew up the following criteria that we wanted our house to meet.

· Maximise our involvement by being owner builders to save costs and to maintain “ownership” of the process
· East-west alignment with large north facing windows to maximise solar gain
· Smaller windows on South, west and east to minimise heat loss
· Minimise fire risk by giving the house a low profile and by using low risk materials
· Eaves to exclude summer sun but allow winter sun to warm house and protect mudbricks from weather.
· Utilise at least some earth covered wall construction (a carryover from our earlier thoughts of building an earth sheltered house)
· Use thermal mass to maintain constant pleasant temperature (20 –25 degrees) and minimise energy use.
· Utilise natural ventilation and cooling pipes (stack and cross ventilation)
· Maximise natural lighting to all rooms avoiding need for lights during daylight hours
· Wet areas to be in close proximity to HWS to minimise hot water pipe distances
· Incorporate a window outlook that provides views of our bush environment
· Accommodate wheelchair access to most of house
· Plan to include provision for large concrete water tank, wood stove and wood heater
· Access between garage, pantry and rest of house
· Cathedral ceilings and exposed beams
· House to have appearance of being part of the environment- not alien to it
· Rooms to be reasonably spacious and Incorporate plenty of storage space
· Use plantation timber (not old growth forests)
· Minimise “wasted” space eg. halls
· Use materials with a low “embodied energy component”
· Adequate insulation using natural non toxic materials
· Use physical termite barriers- no poisons
· House plan to incorporate 3 bedrooms, a study/office/spare room, lounge, family room, kitchen, walk-in pantry, bathroom, toilet, laundry and garage/workshop.
· Deciduous vine covered pergola along northern wall for shade in summer but light in winter

OUR SOLUTION
Our solution was a mudbrick house (external and internal mudbrick walls), built on a slab with one earth sheltered wall (built with “normal” fired bricks and back filled with soil). The house and garage area is around 25 squares. A clerestory is used to bring light into the back of the house. We are very happy with the design we came up with, which meets 99% of our initial criteria.

WHY MUDBRICK?
We decided on mudbrick because:-
· They have low embodied energy
· We were planning to make the mudbricks ourselves. After we had made 80 bricks (out of the 4000 we needed) we decided to buy the rest from Barclay Bricks in Hurstbridge. Back in 1999, puddled clay bricks were only $1.65 each delivered- a very reasonable price we thought.
· They do not require great skill to lay. Slight irregularities in levels add to the “rustic charm”. We use this excuse all the time to explain imperfect lines etc.
· They have good thermal mass (but not good insulation)
· We love the texture of mudbrick wall surfaces
· Laying a few bricks puts the wall up a fair bit because of their large size
· They are fire reistant
· The density of the mudbrick adds an element of sound reduction so that activities in one room have less impact on people in another room
· By building a post and beam frame and later filling in the walls with mudbrick we could put the roof up first and then work on the walls under cover in rain, hail or shine.

In the next post we will get into the nitty gritty of construction and layout.

2009 At Tenderbreak

Most of our posts focus on the development of our permaculture property, but every now and then we’ll add more personal bits and pieces to give a better understanding of what it means to live in this magical place.
Last year ended well with a joyous Christmas. We knew a place in the bush where escaped pinus radiata trees were growing wild. Each year we do our civic duty and remove one of these weeds for use as a Christmas Tree. Our cathedral ceilings allowed us to use trees over 5m tall. This creates two difficulties. They do not fit inside the car so they get strapped to our roof rack for the ride home (luckily not on major roads). In the photo, Heather and Sally are getting ready to lower last year’s selection to the ground. The next problem is getting them through doorways- but we solved this with some judicious pruning.

Once the tree was inside it would be placed in a pot and fastened in place with some fishing line. Then the fun part came- adding decorations. The challenge with large trees is to obtain enough decorations so that the tree doesn’t end up looking half naked. This year we were helped out in this regard by some kind people who left a large box of decorations (in very good condition) out beside the road for hard rubbish collection. Thanks to those unknown people our trees will always be superbly decorated.

Unfortunately this happy anecdote has a sad ending. Our supply of “Christmas” trees that we thought would supply us forever, were burnt out on Black Saturday. At least when the bush recovers it will not have to compete with these invasive introduced plants. But now we are on the lookout for another source of trees!

After Christmas we harvested our onions and garlic. The garlic harvest was very good. To solve the storage problem, Heather decided to plait the garlic together into long strings which we hung in our barn till needed. She wasn’t quite sure of how to plait them securely, so she checked out some websites which explained step by step how to plait a horse’s tail. This technique worked really well. She became so absorbed in the process that one plait ended up over a metre long! Now whenever we happen to pass a horse, her hands start twitching with the urge to start plaiting. (Just joking!)

Our onions were equally successful- particularly the red onions. As the photo shows, they were huge and they tasted delicious. Even if we were eating onion each day, one onion would last a week.

We grew sunflowers in our pumpkin patch to attract bees and provide some shade to the pumpkins on hot summer days. We reckon every garden should have at least 1 or 2 sunflowers- they brighten up the garden and radiate happiness. They are also a very useful source of seed for chooks- ours love them.

Most of our visitors arrive by car, because we are many kilometres from most places. A month ago though, our friend Sean decided to ride his bike over from Healesville. That’s about 20 km away over some quite steep hills and windy gravel roads. However Sean regards such a trip as just a warm up ride. He is quite addicted to long and difficult (to us) trips on his bike. Anyway Sean is a bit of a coffee aficionado, so Heather brewed him a freshly ground cup of Organic Yarra Coffee as a reward for his effort. After morning tea he hopped on his bike and rode home to his partner Leah –the long way!

In early February, Victoria was under the spell of a heatwave. Our way of turning those oppresive nights into a bit of fun was to camp down by the dam. We were in one tent, Sally was in another and Emilie was camped up closer to the house. (She may have been nervous about the wildlife moving about at night.)

We just used the inner part of the tent, which meant we could see the stars above, and because we are far from the city lights they twinkle very brightly- always awesome. We slept so well we have no idea whether kangaroos or wombats passed by- perhaps they were on tiptoes.

In this post we’ve avoided talking about Black Saturday (almost). But on two weekends in April we hosted small group tours of Tenderbreak and part of the tour involved explaining to visitors what happened, what our defences were and what changes we intend making. The photo above shows Andrew explaining the role of the dam in our permaculture design to one of these groups.

These tours have been so popular (78 people have booked so far) that we added several more dates. If you are interested in joining one of our tours, the two dates currently available are May 3rd and May 24th. Send us an email if you would like more information (tenderbreak@bigpond.com) .