Tag Archives: shutters

Windows

Eyes may be the windows to the soul, but windows are the weakest link in our homes. Because they’re fragile. Because they break.

It seems like such an obvious thing now, but I remember how shocked I was when an expert pointed out that the inside of our homes is the driest place on earth. Once a window breaks, even one ember is enough to burn the house down from the inside out.

Makes sense, doesn’t it? Yet how many of us have adequate protection for our windows?

When I built my house in Warrandyte, I had to put metal mesh screens over all the windows that could be opened. But my house has double barrel windows where the top pane opens but the bottom pane is fixed. The top pane is protected by the required metal screen [basically an ordinary fly wire screen but made of metal]. The bottom pane is not.

Now, imagine a bushfire scenario. The wind is howling, and the gums are dropping branches large and small. One of those branches is blown towards the house and slams into one of my windows. The top pane may remain intact, but what of the bottom pane?

Yes. Exactly.

I solved my window problem by investing in fire resistant shutters. These shutters cover the entire window area, top pane, bottom pane and the wooden frame. They look like this:

The shutters roll up and down inside the frame [like vertical sliding doors] and are rated to protect the windows for about 20 minutes. That’s the length of time it usually takes the fire front to pass.

The regulations have been tightened up a lot since Black Saturday, and I believe that new houses in fire prone areas must have toughened glass instead of ordinary glass. But what of existing houses? As far as I know, there are no regulations about retrofitting toughened glass to houses built before 2009.

Does that mean there is no danger to those houses? Of course not.

If you live in a bushfire prone area, please think hard about your windows, and what you can do to protect them.

Stay safe.

Meeks


Staying cool in 43 C

It’s officially 43 C in Melbourne, and my air conditioner died yesterday, yet the inside of the house is a relatively comfortable 26 C :

The defunct aircon unit showing the temperature inside the house

My office is a fair bit warmer because it’s a small room, and the desktop computer puts out quite a lot of heat [AMD processor], but it’s still bearable.

Magic? No, fire resistant shutters.

I wrote about my fire resistant shutters back in this post. They’ve never been tested in a bushfire situation, but by god they keep ordinary heat out!

The following pics were all taken from inside the house to show the shutters at work:

In the loungeroom
Inside the front verandah
Through the kitchen windows
Old fashioned evaporative cooling, and more shutters.

Almost every door, verandah and window in my house has been fitted with these fire resistant shutters. They weren’t cheap, but every winter since then, they’ve kept the warmth in, saving me money in heating costs. And in summer they keep the heat out, with or without the air conditioner. đŸ™‚

Much as I love my shutters, however, I have to say that on their own they would not have been enough. Part of the reason they work as well as they do is that I insisted on having an insulating foam applied behind the door and window frames. The foam fills up all the gaps in construction conveniently hidden by the frames. A small thing, perhaps, but the foam has stopped those elusive draughts from leaching the heat from the house.

Apart from the shutters and the foam, two more things helped keep us from melting today. The first was the weather overnight. The temperature dropped to 14 C which allowed the cross ventilation in the house to cool everything down before the heat climbed again. If it had been hot overnight, we would have been in trouble.

The second thing is that orange towel shown in the last picture. And no, it’s not my washing. :p

That humble towel is wet, and it’s hanging in front of an oscillating fan. As the water in the towel evaporates, it cools the air. The fan then circulates that cooler air around the small family room and into the kitchen.

My jerry-rigged evaporative cooling is probably good enough for some light cooking but…bugger it, we’re having take away! Ahem. I deserve it.

If you’re an Aussie, I hope you stayed cool and safe today. If you’re from the northern climes, I hope you stayed warm and toasty.

-hugs-

Meeks


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