在等级上未加热的板坯
I’m planning to build a house in Southern Ontario with a slab on grade (actually about 2′ above grade) foundation. The slab won’t be heated, but will be very well insulated. The house itself will also be very well insulated. There will be a moderate amount of south facing glass with a reasonably high SHGC (around .6).
I’m weighing two different flooring options for the main floor. The first is polished concrete, with the use of some area rugs. The second option is an engineered wood floor, also with the use of some area rugs.
Although I could always switch from one flooring to another, it would be great if that didn’t have to happen (changing flooring could affect door thresholds, trim, and the rise for the bottom stair, not to mention cost, waste, and hassle).
Any thoughts out there?
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答复
Polishing or finishing the top of the slab should be less expensive than installing a wood floor over the slab, and the exposed slab should perform better thermally. In other words, winter sunshine hitting a concrete floor will absorb and release heat better than wood, and will cause smaller temperature fluctuations.
我同意您的热情和成本凯文。我所遇到的一个问题是，混凝土会感到寒冷的脚下，即使是70F / 21C。区域地毯可以走很长的路要来来管理这一点，但是有些地方没有地毯不是最好的选择，如厨房。在厨房里做软木地板可以工作......但是（可能）地板高度的变化也可以处理。
有没有人在寒冷的气候中有一个未加热的板坯经验？
"Does anyone have experience with an unheated slab in a colder climate?"
Yes, and with adequate insulation, such as you are installing, they are fine. The unforgiving hardness of the floor may pose a problem for some people. Rugs or work mats go some way to mitigating it.
成品板和地板之间的选择并不像出现的那样呈现。你必须电影抹子，无论你是否覆盖它
在我们自己的房子里，我们将平板封装在我们稍后在我们发现我们可能想要更加原谅的地面的地区落地地板。我们从未有过。
Kevin is right that the slab will be cheaper, probably wrong about the thermal benefits, at least in your climate. You'll be cranking the thermostat up a notch or two to compensate for the cold surface underfoot. Still, if you feel like experimenting it's not a terrible idea to go with the polished slab - some people like cold feet - but be sure to at least set your kitchen cabinets and your entry door thresholds 3/4" high so that when you get tired of that cold hard concrete in a couple of years you'll have room to install a comfortable hardwood, bamboo or cork floating floor and the doors will still swing and the dishwasher will still fit under the countertop. The bottom rise on your stair will be short but hey, lots of older houses are like that and you'll soon get used to it. Body memory is a wonderful thing.
The whole idea is silly. A huge hulking bulk of expensive, high embodied energy concrete that has a mind of its own and a microclimate to fight against most of the year. Out of date technology.
Cheaper, more comfortable, more control and responsive and greener would be a superinsulated wood frame floor using pressure treated piers, piles or sills on a rubble trench.
Flitch,
Are there still areas whose codes allow the construction you describe? Ours sure don't.
This is a good discussion - thanks for your thoughts. James, have you lived with a polished slab floor? Not that your opinion isn't still helpful if you haven't.
Polished concrete isn't just power trowelled. After the slab is placed, it should be power trowelled at least three times. Then, at least two weeks later,(a month is better) it gets polished with machines similar to floor Sanders, using ever finer grits. In the Portland Maine area, figure about six bucks a square foot. Of course that's in addition to the cost of the slab.
People claim a concrete floor is harder than other materials, but I am sceptical that in a controlled test, the difference between concrete (or tile) and a typical oak floor would be all that noticeable. I have a slate floor now and it isn't a big problem for my aging body.
James- I have to disagree about not worrying if the first step is 3/4 " higher than the rest. People would be tripping forever.
Stephen,
大多数暴露的混凝土楼层尚未在您描述时完成。使用Troweazo Machines的电力抹平，有一种滑动尺寸的混凝土表面。最近在建筑期刊和设计杂志中看到的最近受欢迎的看法几乎总是只有电力抹雨，用混凝土封口机完成，经常锯切或没有灌浆的接头。我现在站在一个人身上，在过去十年中完成的每个房子都有他们。
Malcolm ......一个级梁周边和轴承墙基础是代码投诉;工程师可以在瓦砾沟槽上签字。我们谈话时节省数千美元并改善室内气候控制。我喜欢一块抛光和着色的混凝土楼层，但安大略省南部的板块在住宅应用中并不是气候实用。我猜这个想法来自周期被动太阳日间热量的概念，然后在夜间释放它。但是，我们现在所知和现代材料，北部气候，板坯应降级到渡渡鸟的方式。
我认为这张海报对板坯的刺激正试图让母猪耳朵出丝绸钱包。它有它的时代。
Here is a grade beam foundation that meets code – still lots cheaper, easier and greener than a full slab.
http://web.ornl.gov/sci/buildingsfoundations/handbook/section4-2.shtml
From there a 12" -14" wood I-beam or truss joist floor, sealed and super insulated is also code compliant. A bullet proof vapor barrier is needed underneath. A mechanicals' well can be poured in the middle or mechanicals can be done above.
There are many floor systems that pass muster that are cheaper and much more effective at enabling control over space conditioning.
：
http://www.awc.org/software/enterprise/AWC-ASDGuidelines2001-0602-unprotected.pdf
http://www.apawood.org/level_b.cfm?content=prd_joi_main
http://buildingincalifornia.com/wp-content/uploads/2014/01/perimeter_t_foundation_for_ext_walls_with_girder.pdf.
为什么不只是穿拖鞋？我有“房子”鞋类，这是一个柔软的橡胶鞋，几乎像海滩鞋子，所以脚呼吸，但它通过非常柔韧的橡胶鞋底保护你的脚免受硬地板。让你的脚保暖，它提供支持。问题解决了。
Carpets are OK but the dust and cleanup are a pain. Not good for people with allergies or pets. Hard surfaces work best.
Concrete floors, all the way!
Malcolm-在缅因州，我们称之为抛光混凝土楼层就是这样，即在连续灌注之后抛光，在板坯大多固化后完成。一旦我的地板完成了，我会发布一张照片。
Check out
jonmeadedesign.com
在波特兰。JON做了新的楼层，但也抛光了旧商业结构的地板。
格雷厄姆 - 我有。我希望再也不会。
斯蒂芬 - 舌头在脸颊。我真的不推荐这个。除非你真的知道你和你的s.o.将使混凝土永恒满意为楼层，首次进行。
彼得 - 是的，你可以“解决”问题。或者您无法首先创建问题。
Stephen,
我猜另一个地区的变化。乔恩是真正y nice work. I hope you do post pics when he is done. when I built my place I saw cut the slab on three foot centres and grouted the joints.
If you are ever in Ottawa try and go by the National Archives. In a cost-cutting measure they eliminated the terrazzo floors and instead used the grinding machines on the concrete slabs. the result is surprisingly beautiful.
Flitch,
I'm a bit confused. The grade beams you linked to are all integral to a concrete slab. I thought that was what you were against?
确保您可以构建一个爬网，而不是板块，但有最小的高度限制。您不能在瓦砾沟槽上以等级构建木材框架结构，或者也是码头基础。它并不简单地签署工程师的结构性问题，它与第9部分的太多其他要求发生冲突。这可能是你永远不会看到它的原因。
Malcolm: when you saw cut the joints, how did you avoid breaking the edges and leaving uneven ragged joints and chips? In my existing house we had a concrete floor installed in a garage that previously had a wood floor. The control joints were saw cut and looked pretty rough, OK for a garage, but not acceptable for a living room.
I agree about ersatz terrazzo. It really looks nice. If I ever get to Ottowa, I'll check out the floor.
Stephen,
For avoiding cracks slabs are usually cut as soon as it has cured enough to get on it and that's when it tends to spall and chip. I wait a week or so. I also avoid using a large concrete saw. A good diamond blade in your oldest circular saw, without pushing the cut, and you get fairly nice results.
Thank goodness sealers have advanced since the solvent based ones of the '90s. It was fine putting down the initial finish, but when it came time to re-seal you had to have the owners leave the house for several days. Nothing like a Xylene hangover to ruin your day!
Malcolm we also experimented with the nasty solvent based finishes. We then went to user friendly water based finishes that could be easily stripped if needed. These finishes were usually put over acid stained concrete. This worked ok for residential concrete but the restaurants and coffee houses found the finish and acid stain being worn off. Now the concrete is ground like terrazzo to the desired gloss. Liquid densifiers and penetrating sealers are then used requiring minimum maintenance.
Debra,
That's a great idea for high traffic areas. Many commercial concrete floors here opt for epoxy finishes, but after a decade or so they are faced with a really messy and extensive re-coating. They would have been better served to do as you suggest.