I'm taking it that these are ready made/ready to hang? And are a pair? If so then yeah they should be fine so long as you have the room on either side of your window for the overhang.

Hi Martina, Since it looks like a fairly big gap and you have a tiled splashback to the left of the window I would tile the gap to match the tiled splashback. That way it gives the effect of a tiled wall with a window in it. However if it's only 10 - 20mm gap you could maybe paint it to match the window frame or even stick on a piece aluminium to match the frame (assuming it's an aluminium frame) Hope that helps..

Thanks for the support and advice. The house is a fair distance behind ours and its a bit higher. The owner keeps the dogs just for hunting wild pigs and they're in large metal sheds, so the noise is like a speaker across our street. I've approached the owner and he's been known to the council Rangers for 8 years. The noise nuisance orders in place but the dogs are still barking... He doesn't care. I suggested the citronella collars him too. I was informed that a roller shutter over the windows will keep the noise down a little but will only reduce a small dogs bark by 3 Db. Zzzzzzzz.....

I'm not expert, & no very little about the rating systems. But have heard they're pretty opaque, & as mentioned may not really mirror real world outcomes. I'm surprised that overglazing the northside will result in too much heat loss. If anything, with the right sized eaves, I'd expect it means too much heat gain in winter (& shaded in summer) in the day. But as mentioned by Paul, it's important that you have thermal mass within the home, to absorb this heat. Which can then be released over time as the home is cooling down in the evenings. Thermal mass are heavy materials, like masonry, concrete, & even water. By absorbing heat, & releasing it slowly, thermal mass knocks off the peaks of daytime highs, & nighttime lows, keeping the internal temperature more stable. Without it a lightweight home can become too hot in the day (even in winter on occasions) & too cold at night. Thermal mass is especially important inland, where the difference between daytime highs & nighttime lows (called the diurnal temperature) is greater. So if you are away from the coast of definitely investigate whether you have enough thermal mass in your home. A north facing concrete of tiled floor will do it. It will greatly increase the comfort & energy efficiency of your home. Instead of aiming for the bare minimum when it comes to energy efficiency, resulting in less comfort, & much higher bills. More about thermal mass can be found on this wonderful government website, http://yourhome.gov.au/passive-design/thermal-mass