Hello,
we are currently building as well. In the next few weeks, the screed will be installed.
Our builder now wants to place three construction dryers in the house for two months afterwards. However, we would prefer to avoid this and get rid of the moisture by ventilating. The builder advises against this.
Can anyone give us advice on whether construction dryers are really necessary or if it is possible to manage the moisture without them?
Thank you in advance for your opinions.
Best regards,
steffi23
we are currently building as well. In the next few weeks, the screed will be installed.
Our builder now wants to place three construction dryers in the house for two months afterwards. However, we would prefer to avoid this and get rid of the moisture by ventilating. The builder advises against this.
Can anyone give us advice on whether construction dryers are really necessary or if it is possible to manage the moisture without them?
Thank you in advance for your opinions.
Best regards,
steffi23
B
Bauexperte4 Jan 2012 22:31Hello,
I also find using 3 dehumidifiers excessive. Completely avoiding them - if the outside temperatures remain as they are - should not be a problem, but I wouldn't recommend it.
Cement screed is the most commonly used type of screed. Therefore, I assume it was installed in your case as well. Cement screed has good strength properties, is resistant to moisture, so it can be used both indoors and outdoors, and it is also suitable as heated screed. The downside of cement screed is that it is only ready for covering after 20-30 days.
Drying devices are generally a good thing. However, they can cause more harm than good if the capillary connection within the screed’s pore structure breaks due to too rapid drying; then no water can be collected by the condensation dryer. On the surface, the screed might "appear" dry, but underneath the situation can look very different...
Given the current temperatures—if they remain stable—I would say controlled heating and good ventilation, with windows closed at night, is sufficient. If temperatures drop, I would recommend using one additional dehumidifier in a strategic location, rotating it between the floors.
While understanding the desire to save costs, don’t forget that your construction loan interest is accruing, and also remember that at low outside temperatures the existing moisture is barely or not at all removed.
Kind regards
steffi23 schrieb:
For cost reasons – 3 dehumidifiers running for 2 months seems like a high and possibly unnecessary electricity consumption
I also find using 3 dehumidifiers excessive. Completely avoiding them - if the outside temperatures remain as they are - should not be a problem, but I wouldn't recommend it.
Cement screed is the most commonly used type of screed. Therefore, I assume it was installed in your case as well. Cement screed has good strength properties, is resistant to moisture, so it can be used both indoors and outdoors, and it is also suitable as heated screed. The downside of cement screed is that it is only ready for covering after 20-30 days.
Drying devices are generally a good thing. However, they can cause more harm than good if the capillary connection within the screed’s pore structure breaks due to too rapid drying; then no water can be collected by the condensation dryer. On the surface, the screed might "appear" dry, but underneath the situation can look very different...
Given the current temperatures—if they remain stable—I would say controlled heating and good ventilation, with windows closed at night, is sufficient. If temperatures drop, I would recommend using one additional dehumidifier in a strategic location, rotating it between the floors.
While understanding the desire to save costs, don’t forget that your construction loan interest is accruing, and also remember that at low outside temperatures the existing moisture is barely or not at all removed.
Kind regards
Bauexperte schrieb:
The disadvantage of cement screed is that it takes 20-30 days to be ready for covering. Hello!
Hopefully, this was referring to the drying process using underfloor heating!? Achieving this with normal ventilation alone would be quite an ambitious timeframe.
Best regards,
TomTom1
H
Häuslebauer409 Jan 2012 14:59Hi,
we are experiencing something similar at the moment. The screed was left to dry for two weeks without heating. Now the heating program has been running for 17 days and will finish in 4 days. However, a sustainable dryness has still not been achieved.
In the end, the general contractor provided a building dryer at no additional cost. The condensate drainage is not a problem since it is directly discharged into the existing wastewater pipe.
The dryer was initially placed in the attic, where it is now really dry. Today it was moved to the ground floor, where a lot of condensate is still forming.
It is best to avoid simply stating that the screed is ready for covering after 3 or 4 weeks. To determine the screed’s readiness for covering, I would definitely recommend a moisture measurement before installing the floor covering. However, not just a surface measurement, but using appropriate core drillings. In our screed, there are special pre-marked spots intended for this purpose to ensure that no loops of the underfloor heating are drilled into.
we are experiencing something similar at the moment. The screed was left to dry for two weeks without heating. Now the heating program has been running for 17 days and will finish in 4 days. However, a sustainable dryness has still not been achieved.
In the end, the general contractor provided a building dryer at no additional cost. The condensate drainage is not a problem since it is directly discharged into the existing wastewater pipe.
The dryer was initially placed in the attic, where it is now really dry. Today it was moved to the ground floor, where a lot of condensate is still forming.
It is best to avoid simply stating that the screed is ready for covering after 3 or 4 weeks. To determine the screed’s readiness for covering, I would definitely recommend a moisture measurement before installing the floor covering. However, not just a surface measurement, but using appropriate core drillings. In our screed, there are special pre-marked spots intended for this purpose to ensure that no loops of the underfloor heating are drilled into.
B
basti230910 Jan 2012 14:16Hello everyone,
My wife and I recently bought a house (which still needs a lot of renovation). Now I have a question about the drying process. With the current weather, I think it’s quite humid anyway, but so far I have only come across companies offering large construction heaters (see link). Are such large ones really necessary, like the one in the picture?
My wife and I recently bought a house (which still needs a lot of renovation). Now I have a question about the drying process. With the current weather, I think it’s quite humid anyway, but so far I have only come across companies offering large construction heaters (see link). Are such large ones really necessary, like the one in the picture?
H
Häuslebauer4010 Jan 2012 15:27Heating systems should be approached with caution. In particular, gas heaters are not recommended because they emit gas vapors (propane / butane) and actually introduce more moisture into the house than they remove.
basti2309 schrieb:
A little while ago, my wife and I bought a house (but it still needs a lot of renovation), and now I have a question about the drying process.. Did you buy a new build? Why is there renovation needed?
Did you buy an older property? Why is it damp there?
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