Underfloor heating + screed heating program without gas connection?

Hello everyone.

Our interior construction is currently in full swing; at the moment, the heating and electrical installers are in the final stages of the "rough installation."

Next week Friday (01.03.2013), our screed is to be laid on the 3 floors (utility basement + ground floor + top floor, each with exterior dimensions of 8.5 x 10.5 m) (the anhydrite screed will be delivered ready-mixed and "heated up" by the screed installer).

But now comes the problem: Due to the weather conditions and our decision to build in winter (hindsight is always 20/20), we naturally do not yet have the supply connections in the house. This means that our underfloor heating (heating system = gas condensing boiler + solar + controlled ventilation + underfloor heating (on ground floor + top floor, not in the basement)) cannot currently (and certainly not for the coming weeks) be put into operation via the normal house connections.

So I did some research online about how this might be handled. I came across various different solutions:

1. Underfloor heating function heating program via electric boiler alone + shock ventilation
2. Underfloor heating function heating program via electric boiler + dehumidifier
3. Technical drying (?)

And then they (I) were lost. What sensible alternatives are there to heat the house (the screed) according to a program? How much money do I need to plan for this? At the moment, I have all kinds of contradictory statements regarding techniques and prices and, as a layperson, cannot make progress alone.

The above-mentioned option 1 would, according to the interior builder, take about 30 days (at approx. €25 device rental/day + delivery + pickup + connection costs + electricity costs + other expenses) and would total around €2000.

For the other options, I only have vague information/prices.

Can you maybe help me out of this situation here and show possibilities of how we should/could best approach this?

I’m grateful for any tip!!!
Thank you very much in advance.
Andi

You won't be able to avoid the appointment anymore anyway... the screeder is obviously already booked. So let him lay it and don't get your hopes up about starting a "drying program" here. Make sure that no one tramples on your fresh screed during the first days and that you manage – without having to go into the house yourself – to keep it at least at +5°C. Afterwards, give the screed its setting and drying time until the tiler comes.

Do you have any special deadlines that are pressing you? Early spring will still be an ideal period for drying! If necessary, you can still provide technical support if time gets too tight for you.

Greetings and good luck ks