How much am I going to save by insulating slab?
我有一个白天的地下室三层楼，在缅因州南部有一个未绝缘的平板。目前，它之间有3/4的卧铺，他们之间的EPS。是在翻新中吗？要拉卧铺以更好地隔离是否值得工作，也比踢脚板氢气更好。值得额外的费用吗？谢谢
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答复
Robert,
如果没有现场访问，很难知道您家中的热弱点在哪里。
如果您的“日光地下室”包括门，则门附近的区域通常是热弱点。当然，您需要直接在门阈值下方的垂直刚性泡沫绝缘材料，从而向下至少3英尺进入土壤。
If your basement has uninsulated concrete walls, they certainly need to be insulated.
改善地板隔热是有意义的是判断。如果您不想，您不必拉起卧铺。您可以在卧铺和EPS的顶部安装2英寸厚的刚性泡沫的连续层，然后是一层胶合板。（当然，如果您有门，则需要调整门阈值。）
在南部ME的新建筑中，充满电踢脚板，油或丙烷加热的地方值得在平板下击中R10，如果不加热的话（R15如果辐射）是有道理的。对于在平板上方使用泡沫的改造，它更加密集，并且还考虑了调整楼梯和阈值以适应更换的地板水平，这增加了巨大的费用。
At the slab edges & above-grade perimeter it's all about heat loss, but with mid-slab insulation it's as much about mold & moisture control and comfort: Summertime outdoor dew points are much higher than the subsoil temps in a ME climate, and a box left on the floor of an uninsulated slab will get moldy, even if there's a capillary break and vapor barrier under it. (It wouldn't surprise me if the existing 1x sleepers were a bit punky or moldy on the bottom side where they contact the cool slab, not from ground moisture, but from summertime moisture from the conditioned space air.) While R3 (3/4" EPS) is enough to mitigate the worst mold issues, another inch would buy you some margin. If you leave them in and install more foam over them it's probably worth putting 6-mil poly between the sleepers and new foam.
From purely an operating cost point of view there's rarely a good economic case to be made for the expense of radiant floors, but from a comfort point of view it's huge as compared to fin-tube baseboard. In-between is low-temp hydronic panel radiators, which are far more comfortable than baseboard, yet far cheaper than radiant floor. If it's a finished basement you plan on spending some time in winter a radiator approach or even radiant floor may be "worth it", but if it's workshop space or intermittent use space, maybe not.
您的加热燃料和空间加热设备是什么？
空间作为全年的客厅,kitchen areas.The room is 23 feet across contributing to the cool feel I imagine. The perimeter has 2 inches of eps 4 feet down on the outside of frost wall. I heat mostly with a PT105 pellet boiler with oil backup. The sleepers are PT. What a great tool this site is and the people who contribute. Many thanks.
I assume you meant the Harman PB105 (not PT...) boiler? Seems like a lot of boiler, but it can probably still run at reasonable efficiency even if it's (probably) 2-3x oversized for the actual load. (And pellet pricing in ME sure beats oil with huge margin!)
If it's a year-round living-room there's a comfort argument for radiant. Without more technical specs on the pellet boiler it's hard to say if running low-temp radiant involves any greater design/implementation difficulty than it would be running an oil boiler, but it's probably not going to be as happy & thrilled as a gas-fired modulating/condensing boiler at low-low temps. Any good heating system design starts with a careful heat load calculation, from which all the rest flows.
感谢Dana，我们有6000SF，但我认为它将处理它，通过Martin的先前建议，我们发现屋顶系统中有很多空气逃生，该屋顶系统被浪费了BTU，我们可以在Radiant中使用。在线经销商说，800 ST的Diys系统为3000美元。您是否会使用目前的绝缘材料来做到这一点，净空是我家人说会杀死两个房间的外观的问题。我打算混合180锅炉供应。
如果您没有净空来容纳更高的楼层，那么加热地板的地板损失将是显着的。（我不是100％确定的，但是我的IIRC在建筑物代码中的加热板代码中阐明了最低的R值，即使是改造的。石膏）如果您的热负荷足够低（与辐射墙和天花板一起使用时，石膏的温度限制不超过温度的限制），但是低温平板辐射器比辐射天花板舒适（或更多）方法。
谢谢for your help