I have a living room of 30 square meters with two waterborne radiators. The room is constantly cold, especially the floor. The plan is to lay 50 mm cellular plastic directly on the existing floor, which consists of 22 mm chipboard and cork/plastic mat. On top of the cellular plastic, I plan to lay 22 mm grooved chipboard, plates, and pipes. On top, I want to lay some cheap click flooring. Does the plastic mat have to be removed, and should I put something between the grooved chipboard and the click flooring, like gypsum or something? Additionally, I'm wondering if I need to lay age-resistant plastic under the click flooring to prevent moisture migration and if so, where in the sandwich should the plastic be placed?
surris
Construction veteran
· Sverige
· 1 692 posts
surris
Construction veteran
- Sverige
- 1,692 posts
With 2 radiators, you shouldn't have any problems heating up 30m2. Do you want to install underfloor heating just because you want a warm floor? Or is the idea that you're going to remodel the kitchen as well? And are you planning to have underfloor heating in more rooms later?
Seems like a lot of work just to get underfloor heating..
Seems like a lot of work just to get underfloor heating..
What does the floor frame look like?
The construction you want with underfloor heating on a poorly insulated floor with 50mm eps additional insulation is not the best!
If you intend to install underfloor heating only for comfort and keep the radiators, you can remove the plastic mat and if it is dry underneath, lay Platon's system for floor ventilation.
Then you add eps and floor chipboard with grooves for comfort and avoid a cold floor...
The radiators must maintain the heat!
A simpler and better solution is if you can renovate the insulation in the joists and simultaneously check its condition!
Cold floors can be due to gaps in the insulation... this way you also gain building height.
The construction you want with underfloor heating on a poorly insulated floor with 50mm eps additional insulation is not the best!
If you intend to install underfloor heating only for comfort and keep the radiators, you can remove the plastic mat and if it is dry underneath, lay Platon's system for floor ventilation.
Then you add eps and floor chipboard with grooves for comfort and avoid a cold floor...
The radiators must maintain the heat!
A simpler and better solution is if you can renovate the insulation in the joists and simultaneously check its condition!
Cold floors can be due to gaps in the insulation... this way you also gain building height.
The two radiators are not enough to heat up the room. The idea is to both reduce the cold intrusion from the floor and simultaneously increase the heat sources, especially since we are considering removing one of the radiators next summer as the wall where the radiator is will be torn down to make room for 2-meter-high windows, basically the whole wall. And YES, a warm floor is nice, right now we have to keep our feet on the sofa in winter.
A common mistake with underfloor heating is that you can't have the floor so warm that it's sufficient to heat ...K Kaputte said:
with too high a temperature in the floors, it becomes stripy... meaning you experience warmer and cooler stripes...
If you're going to install full-height windows, you might encounter cold drafts...
you should prepare a trench in the floor where you can place a special heater... underfloor heating alone can't handle cold drafts...
Also, keep in mind that the feed in the underfloor heating loop should go to meet the cold on the outer edge of the floor with strip insulation.
The ceiling height is the least of my problems, I have about 270 in ceiling height and the door doesn't go into the room. I thought the underfloor heating would be enough to heat the room, especially with extra insulation on the floor. The plan is to keep one of the radiators, but the other has to go because that wall will be knocked down and replaced by 2-meter high windows. So ventilation is needed between the existing floor and the EPS. Can there be condensation there otherwise, or is there some other reason? Since my health is not at its best, I want to avoid tearing out the old chipboard floor; I thought it would be labor-saving to lay a new floating floor on top.B byggarätt said:
The windows will not be directly on the floor, they will be about 50cm up so there will be room for low radiators, it might be best to plan for that. I understand what you mean about the water being at its warmest going along the wall, but I don't understand the part about edge insulation.B byggarätt said:
Edge insulation is when you insulate closest to the wall so that the concrete does not connect with the wall!K Kaputte said:
Good that you are preparing for low radiators under the windows
You could try without radiators first?