Browse Forums Building A New House Re: Hebel Powerfloor insulation 3Oct 28, 2019 3:21 pm Simeon McGovern Affordable Custom Homes, We design and build to your budget Ashington Homes www.ashingtonhomes.com.au Re: Hebel Powerfloor insulation 5May 26, 2020 12:07 pm From thermal perspective - hot air will rise up and Hebel will store heat inside it passes through your bedrooms as well as insulate too, cold air will rise down anyway. So I don't think insulating from thermal properties makes any sense. Air noise and impact attenuation levels are much better than wooden floors and even some of its in-situ slabs due to the structure of AAC material (cells of air), so I am not sure if additional sound screen is really necessary or will help much here. Re: Hebel Powerfloor insulation 6May 26, 2020 5:59 pm Hebel does not store heat (thermal mass), it works like an esky in not allowing air to transfer through it. I would definitely be insulating the underfloor area. Powerfloor is really just a step up from y-tongue boards. Have a brother's house with them installed on a custom build and you can still hear a lot of noise. IMO Hebel is overrated for the cost. Re: Hebel Powerfloor insulation 7May 26, 2020 6:25 pm So why would you insulate the insulator? AAC (Hebel) does store heat and offers a decent level of thermal mass. Due to its thickness of only 75 mm, don't expect 100% noise insulation, especially, considering that staircase void as well as services penetrations will still be responsible for the distribution of the majority of the upstairs noises. They still guarantee STC values between 54 and 62 depending on the flooring being used, which is certainly not bad and much much better than what you get from the plywood floor. You also get superior fire protection of over 240 mins from the above and 90 mins from the below. AAC "stores" excessive heat and let your joists last longer when under fire. Re: Hebel Powerfloor insulation 8May 26, 2020 7:12 pm Compared to timber it has thermal mass, but Hebel is approximately a fifth weight of Concrete. Touch a Hebel powerpanel external wall after 3-4 hot days, its not hot. What are the system details that give you STC 54 or 62? Re: Hebel Powerfloor insulation 9May 26, 2020 7:29 pm Timber has higher specific heat capacity than concrete (1200 kJ/c vs 900-1000 kJ/c) Hebel's heat capacity is 1000 kJ/c, higher than concrete and brick, similar to gypsum plaster, meaning that Hebel PowerFloor performs from thermal mass standpoint similar to 60 mm thick solid timber or 7.5 layers of gyprock. Hebel's wall is not too hot after several hot days because releases heat/cools down during the night, but also, due to its insulator properties, most of the heat goes "inside" the material. You can check their brochure for data on STC: https://www.hebel.co.nz/uploads/downloads/HELIT014April14-NZ-PFloor-D-I-Guide_100dpi.pdf You get 55+ with pretty much any flooring with gyprock-based ceiling system under, however, yes, they still propose to use Bradford 1.5 batts, although, from what it seems, the main role is still played by furring channel and 13 mm gyprock. Such systems also deliver R values above 2.7 and probably around 1.4-1.5 without batts. Re: Hebel Powerfloor insulation 10May 26, 2020 8:00 pm No the heat (air) is not absorbed by Hebel. The wall systems are better than Brick but you still require batts to bring to code. The introduction of Powerpanel XL was further evidence that really the Hebel system is just a basic "cladding", as the insulation brings it to code. Re: Hebel Powerfloor insulation 11May 26, 2020 8:11 pm Powerpanel just adds to insulation, it is not replacing completely replacing it, as it is quite thin. It performs better than brick though. However, if you build your house out of Hebel blocks, 300 mm will be enough to address insulation requirements of even colder areas such as Tasmania and ACT (in fact, even 200 mm should be enough if we count in thermal mass properties). No code defines insulation between the floors though. As insulator as well as thermal mass, Hebel will not be transferring heat, e.g. if you put it on fire, the inner layer of Hebel will be only few degrees warmer while the outer layer will be thousand degrees hot, e.g.: https://www.youtube.com/watch?v=ohKp3uoifqg 1000000% definitely add insulation. I have in my home and it makes a big difference minimising sound transfer. Insulation is pretty cheap and definitely worth it 2 6302 I was looking at different options for a fence for my build and Hebel PowerFence seemed like a good option (one of the criteria was a solid wall look). However, I don't… 0 5928 1 6673 |