北加州爬行空间绝缘推荐
I plan to have the crawl space vented due to the additional cost to seal the crawl space. Home is at
Northern California – 5 months of heating season – wet cold weather, no snow, rarely go below freezing, low typically in 50s. Dry summer and I don’t plan to have AC. There will be plumbing pipes and electrical wires in the crawlspace. Most new homes use fiberglass in the floor joist cavity in my area.
I read through the existing threads and most relevant information I found is from Robert’s suggestion: “use 2″ foil-faced polyisocyanurate insulation board (Thermax, High-R, etc) under the floor joists, well sealed at all joints and edges. The foil is a perfect vapor barrier, an excellent barrier to radiant flow between the floor and the ground below, and high-R insulation.”
Questions:
1) Does the same solution apply to my weather with plumbing and electrical wires in the crawl space? I want material that has least negative impact to IAQ.
- 如果我想在地板托牙腔内添加额外的绝缘，你推荐什么材料？马丁在爬行空间中推荐纤维素。
– If the moisture (plumbing leak) gets into the floor joist cavity, Will it dry upward into living space?
- 是http://products.construction.com/swts_content_files/2414/290659.pdf合适的产品？网站提到墙壁和天花板，而不是地板。
– Just want to be sure – I assume the 2″ insulation board is glued/nailed to the floor joists and with large air gap between the insulation board and ground dirt, right?
2) Where does the plumbing and electrical wire go?
– between the insulation board and ground dirt?
– between the floor and insulation board? This will reduce the crawl space clearance but may be OK.
3）由于爬行空间发泄，我仍然需要用塑料板覆盖爬行空间基础墙壁或覆盖地面吗？我的理解是，千万花费成千上万的密封地面，但它可能比没有放松覆盖地面的东西更好？
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Replies
艾米,
如果你在爬行空间中有管道，那么温度低于冻结，那么你应该有一个密封的，至少半条件爬行。
在泥土上放置蒸汽屏障很少的成本很少。标准6密耳Poly将起作用，但最好使用像TU-TUF这样的更抗撕裂的品种。应粘贴接缝和渗透，并将边缘填塞在墙壁上。
然后将热带粘在墙壁上，地板托梁可以保持绝缘，以便于机械。请务必将泡沫板块放在带托梁上的泡沫板，并在车架上喷洒边缘和关节。
艾米,
如果在绝缘地板中有管道泄漏，则行星上没有绝缘材料将“处理”管道泄漏并允许水分无害地干燥。
If you have a crawlspace with plumbing, it is false economy to try to save money by omitting insulation on your crawl space walls. I strongly advise you to protect your plumbing pipes by omitting vents -- a savings, by the way, compared to installing vents in your foundation -- and by insulating your crawl space walls to retain your home's heat.
艾米,
I should add that there is typically far less surface area to insulate on the crawlspace walls than there is in the floor above (unless it's a small addition).
Another, but more costly, method of sealing and insulating the crawlspace is to spray closed-cell foam on the walls, sills and rim joists. This is one of the few places where I would suggest using spray foam. This also helps seal the ground VB to the walls.
Make sure than any access door is also insulated and weathersealed.
CA湾区还有一个家庭，艾米的天气相同。我知道这是一个古老的线程，但思想值得一提的是，我所在地区的大多数旧家庭都发泄了爬行空间。如果我封锁我的通风口和其他气隙并封装空间，我还将从炉子系统的返回管道中添加通风口。它永远不会太潮湿，所以我并不担心添加一个去加湿器。