Browse Forums Windows & Doors Re: difference between stacker doors and lift & slide doors? 4Aug 26, 2014 10:57 am lenarufus Thanks. But I still don't understand low-e, I've read that it reflects heat back to its source. I can see that that means in summer it stops radiant heat from entering but how does it affect the warmth of the house in winter if you have a cold house? Not sure what you mean, how does it affect warmth if you have a cold house. Insulation reduces conduction of heat (radiation with low-E), if there is no heat, then insulation doesn't work. Low-E resists heat transfer by radiation, solar heat gain can be a huge problem as sunlight entering through glass can be equivalent to a 2kW heater for every square metre. Low-E reduces this effect by around 80%. Heat inside the home is mostly lost through conduction, double glazing reduces that by having a pocket of still air slowing down heat movement. Low-E will slow any radiant heat, to compare the two, double glazing and low-E, it is the difference between a doona or woolen blanket and a reflective rescue blanket... the doona or wool contains air pocket that slow heat transmission, the reflective blanket reduces radiant heat transmission. Which would you have on your bed? So in short, yes, low-E will work on radiant heat loss from inside a home, but you will lose 90% of the heat through conduction. Double glazing and low-E works on both. If you heat a house, and set your thermostat to say 24 deg, and your heating system doesn't reach 24 deg, then your leakage rate exceeds the output of your heat source. Double glazing will make the biggest difference in a home. By adding double glazing you should be able to reach your set temperature and save money. If you don't heat your home, then double glazing will make no difference. Ed "ECOECO" At 'EcoEco', we design windows, we design the best windows, we do it for you, so that when you’re happy we are happy. Tel. 1800 326 326 Hi Stuey, think you’ve got a couple of options here you’d just need to decide your preference/which options suits best. You could recess the windows (just keep in… 1 3966 What do you need them to withstand? If it's normal wear and tear, then either will do, if you want resistance to ingress then laminated would be the favourite, but only… 1 12379 Sure looks like the type of track that I fitted to my house. My supplier said that the underside has a tray which drains to the front. They cut vertical slots in it. So as… 6 7880 |