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Construction for cast heated floor?
I live in a house from the 1950s where the main structure is 2.5 m high walls for the ground floor and a wooden structure for the second floor. The ground floor is entirely above ground and the foundation has been newly drained. The floor on the ground floor is currently constructed as follows: gravel bed, about 5 cm concrete slab, timber joists with mineral or stone wool 10-15 cm (varies), floorboard/wood floor, parquet. Under the parquet is mostly a linoleum mat that keeps the bad smell away. In some parts, there is a step-dampening plastic mat under the parquet. Yes, as you can see, a flawed construction with organic material directly against the concrete slab.
My plan is to install waterborne underfloor heating throughout the ground floor, but I'm not quite sure which construction to use. I've been thinking of laying foam insulation on top of the existing slab, as much as I can fit (about 10 cm), and then casting a five-centimeter slab on top of the insulation with embedded heating pipes. Would this be a moisture-safe construction?
This weekend, I broke up the entirely uninsulated floor in the laundry room, and now I've got a little idea whether I should break up the whole floor to make room for additional insulation. However, my plan is still to build up the floor without an air gap as follows: gravel bed, (possibly existing slab), foam insulation, concrete slab with heating pipes, parquet or tiles.
Other conditions: The walls are not additionally insulated. We plan to replace the current original windows with modern ones with better thermal properties. The house is located in Stockholm.
Is my proposed construction okay?
My plan is to install waterborne underfloor heating throughout the ground floor, but I'm not quite sure which construction to use. I've been thinking of laying foam insulation on top of the existing slab, as much as I can fit (about 10 cm), and then casting a five-centimeter slab on top of the insulation with embedded heating pipes. Would this be a moisture-safe construction?
This weekend, I broke up the entirely uninsulated floor in the laundry room, and now I've got a little idea whether I should break up the whole floor to make room for additional insulation. However, my plan is still to build up the floor without an air gap as follows: gravel bed, (possibly existing slab), foam insulation, concrete slab with heating pipes, parquet or tiles.
Other conditions: The walls are not additionally insulated. We plan to replace the current original windows with modern ones with better thermal properties. The house is located in Stockholm.
Is my proposed construction okay?
Hi Dino
You can take a look at threads about basement projects available here http://www.byggahus.se/forum/showthread.php?t=28585
You can take a look at threads about basement projects available here http://www.byggahus.se/forum/showthread.php?t=28585
Thanks, interesting! Now we don't have a basement and the ground floor is above ground. But the principle might be the same? I'm now hesitating between renovating quickly, i.e. putting insulation on the existing slab and then casting, or breaking it up and doing it according to all the rules of art. And the answer should be obvious...
My problem is that both entrances to the house are on the ground floor, making it practically impossible to stay while the work is being done.
Another question is whether I should replace the stammer or not? It's a tricky project because the existing stammer goes under floors that I hadn't planned on breaking up: the slab where the pana stands and a newly renovated guest toilet. Well, it will probably be to replace the stammer that come to light and connect to the cast iron pipes.
My problem is that both entrances to the house are on the ground floor, making it practically impossible to stay while the work is being done.
Another question is whether I should replace the stammer or not? It's a tricky project because the existing stammer goes under floors that I hadn't planned on breaking up: the slab where the pana stands and a newly renovated guest toilet. Well, it will probably be to replace the stammer that come to light and connect to the cast iron pipes.
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