Browse Forums Windows & Doors 1 Jun 19, 2009 4:17 pm Hi all I'm not too sure if I've posted this in the right place, but I'm sure I'll find out soon enough I've asked to put double doors on my theatre room, but was told by my builder that this can only be done if it doesnt change the energy effeciency of the house. Is anybody able to explain this to me in English? (I have no idea about energy efficiency!) Cheers. Nat Building 'The Kingston' (with 'Boston' elevation) through Blueprint Homes in Hocking, Perth **PCI complete 06.02.10** My Thread - https://forum.homeone.com.au/viewtopic.php?f=31&t=17607 Re: How do doors change energy efficiency? 2Jun 19, 2009 4:25 pm NatB Hi all I'm not too sure if I've posted this in the right place, but I'm sure I'll find out soon enough I've asked to put double doors on my theatre room, but was told by my builder that this can only be done if it doesnt change the energy effeciency of the house. Is anybody able to explain this to me in English? (I have no idea about energy efficiency!) Cheers. Nat That's strange because we have to have doors between living and passage and another area for energy efficiency. It is about keeping heat in or something. we are wanting double doors on our theatre as well. Re: How do doors change energy efficiency? 4Jun 20, 2009 1:05 pm NatB Hi all I'm not too sure if I've posted this in the right place, but I'm sure I'll find out soon enough I've asked to put double doors on my theatre room, but was told by my builder that this can only be done if it doesnt change the energy effeciency of the house. Is anybody able to explain this to me in English? (I have no idea about energy efficiency!) Cheers. Nat It's possibly true as the door could impede air flow assumed in the software between window openings... depends on the energy rating analysis. 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 Re: How do doors change energy efficiency? 5Jun 20, 2009 2:32 pm Sure closed doors impede airflow between windows, but does that mean you don't put doors on wc's and bedrooms? I don't know what the rules are but logically I would think doors would be required between different heating zones to keep the heat in and beyond that I'm not sure it matters. When you want privacy you close the door, when you want ventilation you open it. I would be interested to know if the builder can explain it, otherwise I'm inclined to agree with Casa2. Casa2 The old we don't want to do something so we'll make up a story trick. Re: How do doors change energy efficiency? 6Jun 20, 2009 6:46 pm Macy Sure closed doors impede airflow between windows, but does that mean you don't put doors on wc's and bedrooms? I don't know what the rules are but logically I would think doors would be required between different heating zones to keep the heat in and beyond that I'm not sure it matters. When you want privacy you close the door, when you want ventilation you open it. I would be interested to know if the builder can explain it, otherwise I'm inclined to agree with Casa2. Casa2 The old we don't want to do something so we'll make up a story trick. Interesting argument, but you're arguing with a piece of software they use to energy rate the houses not with me. I just reported a conversation I had with an energy rater which confirms the builder's reservations... doors may impede the air flow... 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 Re: How do doors change energy efficiency? 7Jun 20, 2009 6:50 pm air flow, sound and heat loss/gain air flow thru vented rooms ie dunny(s) Where you are coming from is where you are going to... Re: How do doors change energy efficiency? 8Jun 20, 2009 6:54 pm onc_artisan air flow, sound and heat loss/gain air flow thru vented rooms ie dunny(s) ?????? "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 Re: How do doors change energy efficiency? 9Jun 20, 2009 6:57 pm ed @ EcoClassic Macy Sure closed doors impede airflow between windows, but does that mean you don't put doors on wc's and bedrooms? I don't know what the rules are but logically I would think doors would be required between different heating zones to keep the heat in and beyond that I'm not sure it matters. When you want privacy you close the door, when you want ventilation you open it. I would be interested to know if the builder can explain it, otherwise I'm inclined to agree with Casa2. Casa2 The old we don't want to do something so we'll make up a story trick. Interesting argument, but you're arguing with a piece of software they use to energy rate the houses not with me. I just reported a conversation I had with an energy rater which confirms the builder's reservations... doors may impede the air flow... and therefore affect the energy rating outcome... 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 Re: How do doors change energy efficiency? 10Jun 20, 2009 7:07 pm ed @ EcoClassic Macy Sure closed doors impede airflow between windows, but does that mean you don't put doors on wc's and bedrooms? I don't know what the rules are but logically I would think doors would be required between different heating zones to keep the heat in and beyond that I'm not sure it matters. When you want privacy you close the door, when you want ventilation you open it. I would be interested to know if the builder can explain it, otherwise I'm inclined to agree with Casa2. Casa2 The old we don't want to do something so we'll make up a story trick. Interesting argument, but you're arguing with a piece of software they use to energy rate the houses not with me. I just reported a conversation I had with an energy rater which confirms the builder's reservations... doors may impede the air flow... Ed Sorry, it wasn't intended as an argument. I just wonder if sometimes the energy ratings theories don't take into account real life. Re: How do doors change energy efficiency? 11Jun 20, 2009 7:10 pm NatB is wanting to add some doors. If indeed a reduction in air flow increased the energy efficiency of a house, which I doubt would, then NatB is only improving things. Demolition August 2009, Construction Started September 2009, Completed December 2010 Re: How do doors change energy efficiency? 12Jun 20, 2009 7:14 pm Sometimes I think real life doesn't concern itself enough with the real cost of energy, I am glad NatB is. Where you are coming from is where you are going to... Re: How do doors change energy efficiency? 13Jun 20, 2009 7:26 pm Macy Sorry, it wasn't intended as an argument. I just wonder if sometimes the energy ratings theories don't take into account real life. Sorry, I didn't mean it like it sounded, I am just as p*** with the software. 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 Re: How do doors change energy efficiency? 14Jun 20, 2009 7:30 pm So if they won't allow double doors on it, have them fit the architrave & no doors. So they match, get them to put 2 aside in the garage. Then after handover, paint the doors, fit the hardware, and put them up. Re: How do doors change energy efficiency? 15Jun 20, 2009 7:30 pm Casa2 NatB is wanting to add some doors. If indeed a reduction in air flow increased the energy efficiency of a house, which I doubt would, then NatB is only improving things. I think the inference in the software is that the doors will impede airflow and the cooling affect of crossflow ventilation, which the software assumes it needs as part of the energy efficiency. It will even assume the doors are open/closed for a % of the time. "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 Re: How do doors change energy efficiency? 16Jun 20, 2009 11:08 pm ed @ EcoClassic Casa2 NatB is wanting to add some doors. If indeed a reduction in air flow increased the energy efficiency of a house, which I doubt would, then NatB is only improving things. I think the inference in the software is that the doors will impede airflow and the cooling affect of crossflow ventilation, which the software assumes it needs as part of the energy efficiency. It will even assume the doors are open/closed for a % of the time. If the occupiers are more comfortable with the doors open or closed, they will do it. Adding the doors increases thermal comfort through more configuration options. The only way is up with doors and thermal comfort (unless you nail them shut ) Demolition August 2009, Construction Started September 2009, Completed December 2010 Re: How do doors change energy efficiency? 17Jun 20, 2009 11:12 pm Casa2 ed @ EcoClassic Casa2 NatB is wanting to add some doors. If indeed a reduction in air flow increased the energy efficiency of a house, which I doubt would, then NatB is only improving things. I think the inference in the software is that the doors will impede airflow and the cooling affect of crossflow ventilation, which the software assumes it needs as part of the energy efficiency. It will even assume the doors are open/closed for a % of the time. Adding the doors increases thermal comfort through more configuration options. Depends which side of the door you are on... "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 Re: How do doors change energy efficiency? 18Jun 22, 2009 10:07 am Hmm some interesting points... I dont know how much difference it will make, but I will be putting a split system in the theatre room and will probably only have the doors shut when I'm watching a movie or something. The rest of the time the doors will probably remain open. Building 'The Kingston' (with 'Boston' elevation) through Blueprint Homes in Hocking, Perth **PCI complete 06.02.10** My Thread - https://forum.homeone.com.au/viewtopic.php?f=31&t=17607 Re: How do doors change energy efficiency? 19Jun 22, 2009 11:44 am NatB your builder is right. He has a 5* star rating on your house AS IS. If you put the doors the theatre would need to be modelled as a new room, whereas it is currently modelled as part of one big room (whatever it connects to). Casa2 etc are right, it will probably make no difference to the rating or slightly improve it, BUT if audited your builder's 5* rating will be wrong becuase the house has been changed. I would do what was suggested above, get the architrave etc fitted and then do the doors yourself later, or otherwise you have to pay the extra $300 to get the thing rated again. Re: How do doors change energy efficiency? 20Jun 22, 2009 12:40 pm Hmm I see... The theatre room already has one door included, I just want to change it to double doors. I'm not even sure why I want double doors, I just do!! For looks I think! I just don't understand how adding one extra door can make so much diffrence? I guess if it does change the energy rating I'll just get them to do the door frame and I'll install the doors after handover, as suggested Building 'The Kingston' (with 'Boston' elevation) through Blueprint Homes in Hocking, Perth **PCI complete 06.02.10** My Thread - https://forum.homeone.com.au/viewtopic.php?f=31&t=17607 go upvc window frames ensure insulation under colorbond. not just sarking, lighter color roof also not sure if you have seen this viewtopic.php?t=5823 last couple of pages… 4 110572 10 years ago was a different software than we use now. it has had a lot of changes over the past years. Improvments to the software and changes to how Nathers models need… 8 1503 Hi, you've probably already resolved this, however, Commbank will probably pay the funds to you after you send evidence the work is done regardless the change in the quotes. 1 35327 |