How should I insulate under concrete slab on stilts?
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How should I insulate under a concrete hydronic slab on stilts?
Cam Smith
Feb. 6, 2021Last updated: Feb. 10, 2021
Hello all,
I have just purchased a little home in western Québec in an area affected by the 2019/2017 floods. My first order of business is raising the house to avoid future floods. My plan is to use tridodetic posts as my foundation, so the property will essentially be sitting on stilts. My second goal is to install concrete hydronic radiant floors.
有谁有在高跷上手工制作液体混凝土板的经验吗?我将如何进行下面的绝缘，以避免热量损失，因为地板将暴露在高跷的元素。可否将混凝土地面直接浇筑在胶合板底层上?
Thank you,
There are a few ways you could do that, but have you considered raising the grade and just dropping it on a slab on the ground? The reason I suggest that is that you are talking about a whole lot of weight, so you will be putting a lot of money into screw piles to begin with to carry such a heavy load as a slab on concrete not to mention the house, and you are left with a house that sort of falls short on a couple of fronts, namely – the whole underside will be exposed to cold winter air, so you will pay more for heating (or more for insulation), you are exposed to animals underneath, and houses on posts don’t have as good a resale value.
That said, I would first point you towards eitherEPS deck insulated concrete forming systemto go the screw pile route as you suggest, but if it were me I would sooner raise the grade with compactable fill to the desired level you were going to go with the screw piles and drop a slab right on it. At least I would price it out. In which case you could check outslab on grade form kits. At least
price out both options, The slab is definitely the preferrable choice unless it comes in way higher, and that may depend on exactly how high off the ground you were hoping to put it and how much fill you’d need. Either way, here is ourDIY hydronic radiant floor tubing installation video. Laying hydronic tubing is pretty easy work, but designing the zones is best left to a hydronic supplier, Uponor is a brand we used in that video to design the zones for us.