你如何隔离爬行空间和防止霉菌?
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How do you insulate a cottage crawlspace? It's in the Haliburton Highlands
Beata Domanska
May 25, 2020Last updated: Sept. 14, 2020
我们的小屋建在混凝土桥墩上。小屋的爬行空间从30-36英寸不等。爬行空间的外部由压力处理胶合板围脚，有多个通风口。肮脏的地板上覆盖着厚厚的塑料。搁栅之间有粉红色的绝缘层。小屋的爬行空间被泡沫塑料的边界一分为二。其中一半有所有的管道，2个散热器，周围喷洒泡沫和一个带软管的除湿器。这边的通风口已经用泡沫喷封了。
From reading the other posts on this site, we wonder if a) we should close all the vents, b) remove the pink insulation to reduce humidity, c) remove the styrofoam boundary from underneath, and d) spray insulation on entire perimeter of plywood skirting?
Would moisture problems under cottage contribute to moisture inside cottage? We would like to reduce moisture and keep the cottage as warm as possible because we are living here part-time throughout the year.
First I'd suggest you start here on our page on how to insulate crawl spaces –
How to insulate crawlspaces properly
如果室外湿度很高，潮湿的空气接触到爬行空间或地下室的寒冷表面，会导致冷凝，通风就会成为一个问题。你的除湿机是一个相当现代的显示当前相对湿度水平的读数吗?
Its’ best to keep them below 50% RH if possible, certainly below 60%. You have a few questions going on here so I’ll do my best to answer - The insulation won’t ‘add’ humidity, but it’s only needed if you’re heating above and not heating below. If you have insulation batts I assume you may be keeping it cooler down there. Is your plywood touching the ground inside or out? Does it extend below grade? Pressure treating wood will extend the life but it’s still wood and still subject to rotting at some point, so applying spray foam to it may not last very long.
As for your last question, yes, moisture below your cottage will for sure add moisture to the conditioned space above. Best is to lay down a sheet of 6-mil (or thicker) polyethylene vapour barrier to the ground below so moisture doesn’t evaporate into the crawlspace and then the house. Once you’ve had a look at our crawlspace guide pages you may have some better insight, and more questions as well.