Air Locks

I am away in the UK at the moment.

As I have been travelling round I was remembering something I felt was very strange when I first got to Australia. . . . . . It was as soon as you went through the front door you were in the main living space of the house.

In the UK most houses have an enclosed porch like this photograph; or an internal space with a door to the inside (a vestibule)

These ‘Air Lock’ rooms can be important in helping keep heating and cooling bills down.

 

Advantages of ‘Air Lock’ Rooms

The advantages of Air Lock Rooms are:

  • Acts as a Buffer Zone slowing down the rate of heat trnsfer through the door and side panels;
  • Slows down the house Ventilation Rate by reducing drafts (air loss around a closed door);
  • Stops massive heat loss when a door is opened (as long as you treat it like a true air lock and always keep one door closed). . . .useful when you have people at the door you don’t want to invite in.
  • A useful security feature as wide windows allow you to check out callers that might be hiding out of the view of CCTV cameras.

Types of ‘Air Lock’ Rooms

As well as enclosed porches and Vestibules mentioned above other common ‘Air Lock’ rooms are:

  • Mud Room;
  • Laundry;
  • Enclosed veranda:
  • Sun Room/Conservatory.

If you are serious about saving energy perhaps you should think about ‘Air Locks’.

 

Monitored Burglar Alarms

I won’t be bothering with a monitored alarm again!

I had one at my previous home. . . . ‘Free Install’ with 3 Year Monitoring Contract. . . . Waste of money in my opinion!

Monitoring

From all accounts most thieves are mainly after a few valuables that can be moved quickly.

By the time the security service have:

  • Phoned you to check that it wasn’t a false alarm, say 3-4 minutes;
  • Contacted a mobile guy say, 2-3 minutes;
  • The mobile guy has driven to your place , say 10-15 mins;

Between 15 -30 minutes will have passed and most thieves will be long gone.

If they are still there whats the monitoring guy going to do? . . . . call the police that’s another 10 minutes.

Burglaries While You Are At Home

The latest scare tactic by security companies is to say “26% of burglaries are while you someone is in the home!”

Well all I have to say to that is:

  • Who has their alarm on when they are at home?
  • If you suspected a burglar was in the house would you think about getting to an alarm panel so the security company could ring you back? . . . and then wait for the mobile security guy? . .  I’d be ringing 000 on my mobile so the police would be arriving!
  • Rather than have a monitored alarm make sure that you lock all the doors, including the garage, when you are in the house; especially at night.

Alarms In General

Alarms do have their uses:

  • The sight of an alarm may deter some burglars.
  • The sound of an alarm will most likely cause the burglar to rush, so your losses, are more likely to be limited.
  • If you return to your house with the alarm going off you know there could be a problem, rather than walking into the middle of a burglary.

I’m not saving I wouldn’t get an alarm again,  but I would probably go for one with CCTV cameras that send a photo to your smart phone.

At least you would get a picture of the burglar, and you could phone the police straight away with the knowledge you had seen someone in your house.

 

 

 

10,000 Visits A Month

Yesterday was a big day for this blog, and me!

This screenshot from Google Analytics shows I passed the 10,000 visits a month milestone for the first time.

OK it’s not the hundreds of thousands that some websites get. . . . . . . but then the site is only aimed at people building a new house in Australia.

The number of visits is steadily growing with the growth being just over 24% in the last year

Thank you to:

  • All visitors, especially those that visit regularly.
  • Everyone who has bought one of my  $4 E-Book Guides  (2,150 sold to date)

It makes me very happy to think that over the past four years there have been a lot of people who have received useful advice from my hobby/long term interest.

 

 

 

Solar Power – What’s Happening in Australia

I spent a couple of hours last week looking around the Australian Solar Council ‘Solar 2015 Exhibition and Conference‘.

So here are a few things which may be of interest if you are planning a new house.

Hot Water from Photovoltaic (PV) Panels

This is a Rotex Hot Water Service that uses Photo Voltaic Power rather than circulating water as the heating mechanism.

All very interesting as I was only wondering whether this sort of thing would be possible in the Hot Water Post back in April this year.

The company who are planning to sell this later this year are called Energy Smart Water.

You may have heard about the Tesla Powerwall for storing power from your solar panels for night time use but they aren’t the only company with battery options.

Fronius Solar Battery

On the Left is  Solar Battery from Fronius Australia .

The standard Size of the unit is 955 x 570 x 611mm

Capacities rnge from 4.5kWh (kilowatt hours) to 12.0kWh

If you want to use it with existing solar panels you will need to replace the Inverter as it requires a special Hybrid Inverter.

LG Solar Battery

LG’s Solar battery at 406 x 664 x 165mm is smaller than the Froniius Unit but only has a capacity of 6.4kWh.

It can however be supplemented by up to two expansion packs of 3.2 kWh capacity.

This increases the size to, a still relatively compact 966 x 664 x 165mm.

Again this unit requires a special hybrid inverter.

The local agent for the unit are ‘Solar Juice’.

 

 

Currently the companies that are promoting these products say they will be available later this year when full pricing will be available.

All these are interesting ideas but of course the real test will be when the prices are released.

 

For more posts check out Sustainability

 

Clown’s House

Well this looks like a Clowns House to me! . . . . But if you like it,    it could be yours for around $870,000.

The address is 43A Beryl Avenue Oakleigh South Vic 3167.

The Real Estate Agent says “This residence delivers understated panache and undeniable appeal with a touch of Bali”.

Want to find out more? . . . Check this link:  Cooper Newman Real Estate.

For more Unusual House Photos, Wins, and Fails, have a look at: What the………………….?

 

Protecting the Footpath

An issue that can result in grief from the Local Council and additional costs to you is damage to the footpath.

Legally

The last time I built any damage was covered by the Clause which says “The Builder must indemnify the Owner in respect of, and insure against liability for personal injury, death, property loss or damage arising out of the Building Works.”

I have heard that some builders now modify this clause to  exclude damage to the footpath.

If this is the case in the contract presented to you I would suggest that you make sure that the words “will take all reasonable steps to prevent footpath damage” are included.

NB, If there was originally no footpath crossing at the location of your driveway you will still have to pay for a new section of reinforced footpath at that point.

Method Of Protection

Normal practice is for the builder to use a timber mat, like the one pictured, at any point where they move vehicles over the footpath.

The mat is simply 95mm x 35mm, or similar, timbers held together by galvanised steel straps. The ends of the timbers are cut at an angle of 45 degrees to minimise the tripping hazard.

By spreading the load from delivery trucks there is much less chance of cracking, and the timber mat prevents scarring from caterpillar tracks.

 

See Contracts for more posts about issues in the Documents.

 

 

Optus + NBN – Fail 2

A couple of weeks ago I posted about the problems in getting an Installation Appointment but things didn’t much better.

Stage 5

New Optus Modem arrives in the post followed by an NBN installation engineer on the 5th May. the engineer checks the line plugs the modem in and leaves telling us that we should be up and running in 15-30 minutes.

Stage 6

After several tries still no internet and now no phone either.

On the mobile to Optus, after waiting for an hour we were told that we would need to check the NBN box (outside the flat) was working.

We were unable to access the communications room room for the apartments until the caretaker arrived the following morning.

Stage 7

Following morning checked the communications room to find a locked NBN cabinet apparently working.

On the mobile to Optus, after waiting for an hour we were told that we would need to book in an Optus technician to install a cable between the box in the basement and our apartment, at a cost of $140.

Didn’t believe this so contacted NBN who informed us that our NBN was definitely ‘Fibre to the Node’ and ‘Copper to the Apartment’.

Stage  8

Received a message from Optus asking why we were not using our new NBN connection.

On the mobile again to Optus, after waiting for around 45mins we explained what NBN had told us and asked to be phoned back when they had a response.

A couple of hours later we received a phone call saying we had been sent the wrong modem and another  modem was being sent to us.

Stage 9

Finally receive new modem which worked within a few minutes of installation. . . . Internet and phone now working, after 3 days without either service.

Stage 10

Contacted by Optus Customer service as a result of a complaint to the Telecommunications Obudsman who agree to the equivalent of waving 2 months service charge as compensation for the mobile phone calls and inconvenience.

Conclusion

If Optus believed in Customer Care they would:

  • Have enough operators to be able to respond to call in minutes, not an hour.
  • Train their operators to be able to provide correct information.
  • make sure that if a mistake was made with a customer they would take additional steps to ensure no further mistakes were made.

When dealing with communications companies if they fail to provide acceptable service contact the Telecommunications Ombudsman at this link: MAKING A COMPLAINT

 

 

 

 

 

 

Passiv Haus

What is a Passiv Haus  (Passive House)?

Well as you might have guessed the term originates in Germany, and relates to a method of achieving more sustainable performance (and lower Energy Bills)

It’s a technique which doesn’t rely on good orientation, high thermal mass and natural cross flow ventilation to provide comfortable conditions with low energy use.

The house on the right, built in Castlemaine by Carbon-Lite, is said to be the first Passiv Haus built in Australia

Some of the key Passiv Haus characteristics are:

High Levels of Thermal Insulation

All  the exterior envelope (walls and roof) of the house are very well-insulated with a maximum Heat Transfer Coefficient, U-value of 0.15 W/m²K (R=6.6)

This is much better than:

    • A typical Brick Veneer Wall – U value 0.51   (R = 1.92)
    • A typical Roof – U value 0.26   (R = 3.91)

Elimination of Thermal Bridges

All Wall openings, corners, connections and penetrations are designed, and constructed, with great care, so that thermal bridges can be minimised.

Highly Insulated Windows:

Typically triple glazed windows will be required to achieve appropriate insulation

Air Tightness of the Building:

Uncontrolled air changes from gaps must be smaller than 0.6 of the total house volume per hour which is much better than 1.0 of the total house volume per hour that would be more typical of a new house.

To achieve Passiv Haus certification involves a test where the house is pressurised using a temporary ‘Blower Door’.

Energy Recovery Ventilation:

Because the house will be quite airtight a mechanical ventilation is required to keep the air fresh and prevent condensation.

Passiv Haus systems have highly efficient  energy recovery ventilation systems

In Winter around 75% of the energy from the exhaust air is used to warm the fresh air again by means of a heat exchanger.

In summer the exhaust air is used to cool the incoming air

The ventilation systems also incorporate pollen and dust filters.

For more information go to the The Australian Passive House Association.

 

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