Solar air heating panels are a growing trend in green building online, with one notable shortfall – the heat that is generated is difficult to store or control.
Building a frost protected shallow foundation (FPSF) with Passive Solar air-heated radiant floor slab © Ecohome What we've found is there are many advantages to air-heated radiant floors over hydronic radiant floors, but none greater than the ability to inject solar-heated air into the thermal battery which is the concrete slab floor. In our experience, the concrete slab in a super-insulated heated frost protected shallow foundation building provides a gentle and even release of comfortable heat throughout the home.
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How to build frost protected shallow foundations - why we chose this systemĮcoHome built our demonstration prefabricated low-energy kit home, the s1600, by partnering with a specialist company that manufactures frost-protected shallow foundation forms (slab-on-grade) that are heated with air rather than liquid. This has caused much controversy and discussion ever since, with us often hearing how "air doesn't transfer heat the same as water" and how air doesn't hold as much heat, so can't work as well" - with the people saying this taking air and water in isolation, and forgetting that they are both sat in a big thermal battery - which changes everything. These foundation forms give many advantages in terms of convenience, longevity, reduced humidity, radon protection and increased insulation levels - leading to a comfortable home with excellent energy efficiency and an efficient use of carbon intensive materials - like concrete - in the heat-stabilizing thermal mass of the engineered foundation slab. Frost protected shallow foundation (FPSF) forms are in our opinion a great way to build a dependable foundation, and we're going to show how easy installing frost protected shallow foundation forms is here. More and more construction professionals and local States and Provinces in cold climates with a frost line and ground heave in winter have started to realize that the simplest way to build a solid and dependable foundation in these harsh conditions is to build using frost protected shallow foundation (FPSF) forms - which are generally made from high density EPS foam or styrofoam. Traditional foundations for cold climates always extended down under the frost line onto a strip foundation, they can use lots of CMU block or concrete, take lots of time and excavation, and can also be a source of humidity and mold in the crawlspace or basement because they are built underground of porous materials. Why build a frost protected shallow foundation using prefabricated foam forms ?īuilding a frost protected shallow foundation (FPSF) is a well-proven alternative to building deeper, more-costly foundations in cold regions with seasonal ground freezing and the potential for frost heave.
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