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Writer's pictureMR Post Frame

Barndominium RADIANT HEAT Prep | Is $elf Building Worth It? | Ep 15


Welcome back to Mr. Post Frame. Today's post is part of our series discussing whether self-building is worth it. Specifically, we're focusing on the prep work for under slab in-floor radiant heating. It's an exciting topic, especially considering the effectiveness of our approach, which I'll detail in this video. But before we delve into that, let's touch upon the design aspect.


For all you self-builders out there, we have a Patron group that caters to your needs. Head over to back40buildings.com if you're interested in collaborating with us on designing your barndominium, or any other structure. We specialize in post frame, steel frame, and stick frame constructions. Additionally, we're active on Patreon, where we engage with DIYers regularly. It's an excellent platform for more personalized access to Paul and me. We host live Zoom meetings and chats to discuss your projects and provide guidance.


Under-slab heat

Now, let's talk about under slab in-floor heating. In Central and Southern Iowa, where we primarily operate, experiencing all four seasons, winter can be harsh. That's why we include in-floor heating preparation as a standard feature in all our projects. Proper insulation beneath the slab, coupled with in-floor heating tubing, is crucial for efficient heating. The upfront expense for adding the tubing is minimal, ensuring you have the option for in-floor heating from the start or in the future, without breaking the bank.


Reflecting on past projects, I remember the excitement during the construction phase. Seeing the framed walls take shape, albeit without the steel up yet, was a thrilling moment. It was a race against time to complete the concrete work before winter set in, allowing us to work through the colder months. 


In-floor heat insulation

Moving on to the technical aspects, it's essential to understand that in-floor heating operates on hydronic heat principles. PEX tubing runs through the concrete, connected to a boiler or heat source, ensuring consistent warmth throughout the space. Unlike traditional HVAC systems, in-floor heating offers gradual heating and maintains temperature efficiently, thanks to the thermal mass of concrete. However, it's crucial to plan ahead due to the system's slower response time to temperature adjustments.


Addressing common misconceptions, in-floor heating isn't akin to heated bathroom tiles for comfort. Instead, it's a practical solution aimed at enhancing overall energy efficiency. The system provides a steady base heat, ideal for homes, garages, or any structure, ensuring comfort during cold seasons.


PEX in-floor heat

Regarding cost considerations, while the initial investment may seem daunting, especially with control panels, it's a worthwhile expense for long-term efficiency. In our experience, combining in-floor heating with other heating sources like wood stoves significantly reduces utility costs. Proper insulation and tubing placement ensure minimal heat loss, resulting in substantial savings over time.


Transitioning to the installation process, meticulous preparation is key. From laying vapor barriers to insulation, every step contributes to optimal performance. The choice of materials, such as EPS foam insulation, offers advantages like durability and enhanced thermal efficiency. Modern advancements streamline the process, making it DIY-friendly, albeit with certain specialized tools like the Malco Stapler, which significantly speeds up tubing installation.


Barndominium in-floor heat

As for the choice between gas and electric heating sources, gas boilers offer superior efficiency, especially for larger projects. However, the availability of resources and utility costs vary regionally, so it's essential to assess the options based on your location and budget.


In conclusion, under-slab in-floor heating is a viable option for enhancing comfort and energy efficiency in various building projects. While the initial investment and installation process require careful consideration, the long-term benefits outweigh the costs. With proper planning and the right materials, in-floor heating systems can


Thank you,

MR Post Frame


 


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