Browse Forums Heating, Cooling & Insulation 1 Oct 09, 2014 9:36 pm Project builder includes R2.5 batts in the ceiling including garage and alfresco. Only wall wrap around the sides of the house. I've asked for a slight upgrade as I want to feel very comfortable in my home during winter, and mainly summer time. New home is in Springfield Lakes, QLD. House size is 227m2. Ceiling height 2550mm. House faces South, rear faces North.
QUOTE: Ceiling insulation batts upgrade from R2.5 to 3.0 at ($687 ) or 3.5 ($1145) based on approx 229m2 – would you like either included in tender? R1.5 wall batts – approx $2220? END QUOTE Are these prices on par with market prices? Can I do ceiling batts upgrade by myself in the future? Should I get the builder to do it? TIA Felipe Re: Costs to upgrade ceiling and wall insulation: Building a 2Oct 09, 2014 10:54 pm Is that a padded bra with all the batts ? I'm going for R4.0 batts in my ceiling, and as well as the blanket under the colourbond that's R1.3 , that'll give me an effective R5.3 up there. Depending upon what you save in a refund from the builder for the batts, you may just better bang for bucks by letting the builder put in the R2.5 in the ceiling and adding another lot of batts, either R2.0 or 2.5 over the top of the ones already in there. Definately get the walls batts in, at least on the north and west walls, but see how much more the R2.0 ones are. Depending upon your wall frame, if it is 70mm, then R2.0 is as thick as it'll take. If your roof is more than say 20 degree pitch, it is relatively easy to put the batts in yourself. Just watch your step! Owner Building at Jimboomba Woods in Logan City Qld. Blog : http://bandlnewhomebuild.blogspot.com H1 thread : viewtopic.php?f=38&t=68283 . Re: Costs to upgrade ceiling and wall insulation 3Oct 10, 2014 8:08 am he is definitely charging you more than the should. Even if he bought the standard ones then through them away then bought the upgraded ones he will still have charged you too much. Why dont you work it out. Find some fancy batts see how much it covers and work out the material charge then allow a days pay to install. Re: Costs to upgrade ceiling and wall insulation 4Oct 10, 2014 8:59 am I bought 75mm roofing blanket R1.8 (to go under metal roof) for $6/m2. This equates to about $1,500 plus installation. I was quoted $6.60/m2 for R3.5 ceiling insulation and $7.75/m2 for R4 ceiling insulation. For 227m2 this equates to $1500 for R3.5 plus installation (Allow one man day) or $1,800 for R4 plus installation (Allow one man day) I bought R2 wall insulation from Bunnings for $4.32/m2. This equates to about $600 plus installation (allow 4 hours) Re: Costs to upgrade ceiling and wall insulation 5Jan 13, 2015 12:52 pm I'm building a new house and am hoping to improve/maximise energy efficiency in every aspects (considering cost vs benefit). The house comes with R3.5 ceiling insulation, I just wonder if its appropriate to lay another layer of batts on top of the existing? since the existing batts are still new. I will do it myself after handover. What is the most cost effective batts rating suggested? I understand thicker is better but like to know the optimus setup and the curve (insulation vs batt rating) where insulation effective slow down. What rating of batts I should add? R4? would R7.5 (R4 + R3.5) be too thick? or I should go for the lower batts e.g. R2 since I already have R3.5. Any suggestion brand from Bunnings? Thanks for sharing. Re: Costs to upgrade ceiling and wall insulation 6Jan 13, 2015 3:16 pm Redfernpoint I'm building a new house and am hoping to improve/maximise energy efficiency in every aspects (considering cost vs benefit). The house comes with R3.5 ceiling insulation, I just wonder if its appropriate to lay another layer of batts on top of the existing? since the existing batts are still new. I will do it myself after handover. What is the most cost effective batts rating suggested? I understand thicker is better but like to know the optimus setup and the curve (insulation vs batt rating) where insulation effective slow down. What rating of batts I should add? R4? would R7.5 (R4 + R3.5) be too thick? or I should go for the lower batts e.g. R2 since I already have R3.5. Any suggestion brand from Bunnings? Thanks for sharing. The difference in energy usage between (R4+R3.5) and (R2+R3.5) is 0.049 watts/m2/Deg C. so 100m2 area for 10 degrees difference would be 49 watts or $0.01/hour (@$0.20/kWh). 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: Costs to upgrade ceiling and wall insulation 9Jan 22, 2015 8:52 am felipe1982 Project builder includes R2.5 batts in the ceiling including garage and alfresco. Only wall wrap around the sides of the house. I've asked for a slight upgrade as I want to feel very comfortable in my home during winter, and mainly summer time. New home is in Springfield Lakes, QLD. House size is 227m2. Ceiling height 2550mm. House faces South, rear faces North. QUOTE: Ceiling insulation batts upgrade from R2.5 to 3.0 at ($687 ) or 3.5 ($1145) based on approx 229m2 – would you like either included in tender? R1.5 wall batts – approx $2220? END QUOTE Are these prices on par with market prices? Can I do ceiling batts upgrade by myself in the future? Should I get the builder to do it? TIA Felipe Ceiling insulation Moving from R2.5 to R3.0 will save $0.03/hour for your home (229m2) for 10 degree heating/cooling change inside/outside. This will take around 23,000 hours of heating/cooling to recoup the $687 - which is a payback of almost 1,000 days or just under 3 years if you heat/cool 24/7. Moving from R2.5 to R3.5 will save $0.05/hour for your home. This will take around 23,000 hours of heating/cooling to recoup the $687 - which is almost 1,000 days or just under 3 years if you heat /cool 24/7. It's almost exactly the same payback period for R3.5... Walls Your R1.5 will save approximately $0.05/hour for your home (say 150m2 walls). This will take around 44,000 hours of heating/cooling to recoup the $2,220 - which is approaching 2,000 days or 5 years if you heat/cool 24/7. (10 years if you only heat cool 50% of the time!) Ed (All at 10 degrees difference, $0.20/kWh) "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: Costs to upgrade ceiling and wall insulation 10Jan 22, 2015 8:59 am Thanks Ed that puts things into perspective. Sometimes however I'd rather spend the money knowing its not about payback but comfort. I'd hate if I couldn't rely on my insulation to protect the inside of my house from heating up for 1 hot day. Re: Costs to upgrade ceiling and wall insulation 11Jan 22, 2015 9:12 am Crazyk Thanks Ed that puts things into perspective. Sometimes however I'd rather spend the money knowing its not about payback but comfort. I'd hate if I couldn't rely on my insulation to protect the inside of my house from heating up for 1 hot day. Welcome... You won't protect your house from heating up on a hot day, it will just delay the time it takes before your cooling cuts in. And provided your cooling is appropriately sized, and can cope, it will make no difference to your comfort, only your pocket. Ditto for heating homes, if you heat your home (or cool it) to your comfort level, insulation affects the dollars, while your temperature remains stable. 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: Costs to upgrade ceiling and wall insulation 13Jan 22, 2015 12:47 pm Lorri Haha Crazyk he lost me at "and". But look up "insulation benefits and diminishing returns". By James Fricker .Someone sent me to look at it I don't know how right it is. Thanks Lorri, the graph is really helpful showing that the benefit of insulation beyond R2 is steady improved (more is better), so from the maximum cost vs benefit perspective, we should have the insulation at least R2. Re: Costs to upgrade ceiling and wall insulation 14Mar 25, 2015 8:32 pm Sorry to hijack, but If you can't do the whole house, is it worth doing things like bedrooms by themselves. Or would I be wasting time by just doing a room or two and not the whole house? Re: Costs to upgrade ceiling and wall insulation 15Mar 26, 2015 10:38 am In a heating scenerio, it depends on where you live & how cold it gets, but bedrooms can usually be a little colder than other rooms, & still remain comfortable (as most people sleep better at a temperature a little below their waking comfort levels, plus they're under blankets). So you might actually be better to insulate your living areas first, unless you plan to regularly heat your whole house I guess. More heat is lost through the ceiling than walls, so you'd want your ceiing insulation levels to be higher than your walls. In a cooling scenerio, reflective blankets are effectve at cutting down radiation (when installed properly with an air gap), while bulk insulation is effective at cutting down conduction. Along with the ceiling, it's a good idea to insulate the western wall, to protect the home from the strong afternoon sun. Re: Costs to upgrade ceiling and wall insulation 16Mar 27, 2015 9:24 am Quote: Sometimes however I'd rather spend the money knowing its not about payback but comfort. I'd hate if I couldn't rely on my insulation to protect the inside of my house from heating up for 1 hot day. That's exactly my take on it too crazyk. I'd much rather a comfortable house in both summer and winter. The payback in lower energy costs to achieve both is a bonus. I have had friends of mine who have either done a KDR or a big reno and despite me advising them to increase their insulation for walls, ceilings, roof and floor ( plus a couple of design changes ) just installed the bare minimum. I found out later their energy bills per year are four times what ours are . Stewie Re: Costs to upgrade ceiling and wall insulation 17Mar 27, 2015 10:59 am I concur, People spend ridiculous amounts on benchtops, taps and other non critical things, yet bulk at insulation upgrade costs, seems illogical to me, we upgraded our ceiling insulation to R6 for approx. $900 and had sound proof R2 batts put in the internal walls for a bit more, seems like money well spent for mine! Re: Costs to upgrade ceiling and wall insulation 18Mar 27, 2015 8:12 pm steevo I concur, People spend ridiculous amounts on benchtops, taps and other non critical things, yet bulk at insulation upgrade costs, seems illogical to me, we upgraded our ceiling insulation to R6 for approx. $900 and had sound proof R2 batts put in the internal walls for a bit more, seems like money well spent for mine! I'm doing that too. R2 insulation between all beds, laundry, ensuite and living wall. For the sake I a few hundred bucks it's worth it. Re: Costs to upgrade ceiling and wall insulation 19Mar 30, 2015 9:11 pm Thanks for the replies, is it worth doing all walls or just external walls? Just to clarify, To work it out is it just for example the wall is 20m long with ceiling height of 2.55m just 20x2.55. Just doesn't seem like very much as I've work out my external walls plus lined the inside of garage so as to be separate from living is only approx 113m2 Re: Costs to upgrade ceiling and wall insulation 20Apr 03, 2015 3:36 pm Ok so you convinced me to do the insulation went and bought a few rolls of r2.0 wall Insulation and fitted it today to the external walls. Will do the internal walls a bit later of the long weekend. I hope it helps, lol. Will it be worth doing internal walls, I'll only he doing it mainly for noise levels between laundry and rooms etc Found the answer. The recommended distance is .... 1 5959 Hi all, Just wondering if anyone had suggestions on installing/replacing wall insulation on an external wall which doesn't have wrap, our miners cottage being constructed… 0 4933 1 19719 |