Should I Insulate My Crawl Space (Yes, it’s A Mini-Basement)?

一个姐妹问题上一篇文章,您应该隔离地下室爬网空间吗?是否有储蓄和舒适的好处使这么大的项目值得?

通过我的能源审核员眼睛,良好的隔热材料在世界上伟大的事物清单中,纽卡斯尔(Newcastle)也是如此。如果您将爬网空间隔离,那么答案就像一个完整的地下室,是一个强大但合格的肯定的。

Should I Insulate My Crawl Space – The Strong Yes Part

I covered basement insulation in上一篇文章and concrete crawl spaces are similar but in ways quite different. Why should you insulate your crawl space?

出于与您的地下室相同的原因:它失去了大量热量,提供了great paybackand投资回报对于一个大项目。我开玩笑说,在过去,crawl spaces have all the drawbacks of basements with none of the storage. Fantastic!

(OK, I am totally copying this section from my basement post and crossing out ‘basement’ and inserting ‘crawl space’) You should insulate your crawl space for the simplest reason: your crawl space loses a ton of heat and costs you a lot of money. Consider the thermal dynamics for a minute…start considering, I’ll wait *starts whistling*.

Should I Insulate My Crawl Space – Where The Heat Goes

假设外部空气温度为10 f,霜冻线以下的接地温度为50至55 f,舒适,条件的房屋中的温度为70 f。热能总是从上层移动到更低(除非您住在洛杉矶)当材料之间的温度差更大时,热量会更快。遵循热量的路径:

  • 这conditioned 70 F living space will radiate heat into the basement.
  • 爬网空间(锅炉,热水箱,热水管和从地板辐射辐射的热量可能约为50 - 55 F)将缓慢辐射到低于级的土壤中。
  • 爬行空间的热量将非常积极地通过高度移动混凝土/砖/瓦砾粉底wall toward the 10 F outside air.

您的爬行空间在哪里失去热量?穿过建筑物围栏and out the above grade crawl space wall. And often the uninsulated pipes, hot water tank or heating system live unattended in these spaces.

我应该弥补爬行空间 - 我失去了多少热量?

很多。可能不仅仅是地下室。爬行空间失去的热量与没有绝缘的地下室一样多……还有更多的热量。混凝土墙是痛苦的绝缘子,爬行空间具有更大的高度津贴 - 您知道,足够的空间可以爬行。通常,这意味着更大的爬行空间壁高于等级,这意味着更多的热量损失。令人兴奋。

建筑物围栏andthermal enclosure在爬行空间中是混凝土墙。热能以最大的温度差异(在这种情况下通过高级混凝土壁)最大程度地移动。混凝土几乎没有绝缘能力R值of 1 per 8 inches. And, while not universal, most crawl spaces have more above grade concrete than do basements.

爬网空间和地下室有什么区别?只是一个爬行空间,地下室要短得多。从结构上讲,它们与页脚,混凝土粉底墙和窗台组件相同。该空间通常为3-4英尺,允许在下方进入,并且比标准地下室更频繁地拥有污垢地板。这将是稍后的重要一点!他们经历了与地下室相同的热量损失和水分问题,并带来了娱乐性的奖励,因为没人看到问题,所以问题可能会流连忘返。

我应该隔离爬网空间吗?

Moisture is a big issue in basements but can be an even bigger one in a crawl space. The issues of freezing damage and soil gases (see这篇文章以进行较长的关于冰冻伤害和土壤气体的讨论in the basement) apply equally to crawl spaces but moisture deserves more attention.

首先,是早些时候提到的“看不见”问题。地下室被更常规贩运,任何问题(例如漏水地基裂缝)都会很快发现。房主有时会去几年,而不会冒险进入他们家的爬行空间。如果有破坏性的水分持续存在,它可能会持续不足。

爬行空间中污垢地板的普遍性为水分问题增加了另一层。打开污垢会蒸发大量的水蒸气进入建筑物的围墙。当我们开始隔热时,湿度升高可能会导致巨大的问题。例如,由于从居住空间散发出热量,一个未绝缘的爬网空间留在露点的北部。添加fiberglass batts进入爬网空间托梁,爬行空间温度可能会下降到可能的凝结。

所使用的绝缘方法必须考虑到当前的水分。房主通常会实施减少水分(请参阅this article on moisture controlfor some non-dehumidifier thoughts) and use a water impervious insulation like closed cell spray foam. And, like basements, moisture, water flow, chemicals and material differences affect the crawl space. There are bushels of money radiating from an uninsulated crawl space making it a savvy and green investment.

3thoughts on “Should I Insulate My Crawl Space (Yes, it’s A Mini-Basement)?”

    • Irene,

      Thanks for the comment. Heat moves by three mechanisms and air movement is one of them. The other two are conduction and radiation. Caulking would keep the cold air out, but heat would still move through the uninsulated concrete. So there’s some benefit but insulating the wall would stop a greater portion of the heat loss.

  1. Do you have examples how to insulate the crawl space? I would like to know what materials to use for floor, walls and ceiling in crawl space.

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