ᐅ Painting with high moisture levels in new constructions

Created on: 31 Jan 2017 12:04
A
annehh
A
annehh
31 Jan 2017 12:04
Hello everyone,

As is probably the case for many who have built a house, we are experiencing unexpected delays with our build and are under time pressure to move into the new house quickly. Therefore, the question arises whether certain work, such as painting, can already be done while there is still relatively high humidity inside the house.

Here is a brief timeline:
Mid-December: Interior plastering
Then a one-month delay because the plumbing subcontractor dropped out...
January 16/17: Rough installation of underfloor heating
January 23: Screed (with drying accelerator GLASCOPLAST RAPID)
January 27: Connection of one construction dehumidifier and one fan per floor
February 1: Heating switched on with screed drying program
February 11: Start of painting
From February 20: Kitchen installation + flooring

Currently, we still have very high humidity of almost 90%. According to the site manager, this is because the heating is not yet running.
I cannot imagine that we will get the humidity below 60% by February 11. My question now is whether we can still start painting (the plaster is of good quality, so we don’t need to wallpaper beforehand) or if this could have any negative effects? What is your assessment?

Thanks in advance for your feedback!

Best regards,
Anne
N
Nordlys
31 Jan 2017 13:18
With regular dispersion paint: Caution. Blistering may occur. It might work with Keim Ecosil. Keim paints are also used, for example, for interior painting in old, unheated churches where the walls are usually quite damp. They are highly vapor-permeable, meaning they allow water vapor to pass through. However, they are not available for $19.95 per bucket.