How can I solve the excessive humidity in my house?
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As you have seen, moisture is the cause of your problem. Nothing will keep the mold from growing if you don't dry up the space. Is the roof leaking? Is the house air conditioned? If so, make sure that the air conditioner drains are functioning properly. After that, air circulation is going to take care of the issue. Stagnant air is allowing the moisture to stay around and feed the mold.
Fans. Put fans in the windows backwards so that the air is being pulled out of the room, not blowing into the room.
Clean walls and make sure they are very dry before you paint. Paint with a paint with a mold retardant mixed in. The mold retardant is already in exterior paints and those are probably your best bet. Make sure to not paint during the highest humidity parts of the day. Evening time is best.
Dehumidifiers work very well if you have air conditioning. Then clean and paint as above. Good luck.
Thanks so much, I will keep doing it. The bad thing about it is that we have so many trees that overlap the roof of my house, and since we are in the tropical rain forest, it keeps raining all the time.
try brushing on undiluted bleach if it does not work the first time try again.
We moved into a new "cement" apartment in Central America. We did not have heat or air conditioning. I found that the mold showed up on our shoes and leather belts in the closet more than anything on the walls. We kept the windows and doors open for a few months and didn't have any trouble after that. Cement keeps the humidity in and causes mold....hope air passing through will help you.
Dehumidify, check your roof, check your eavestrough if you have any, divert your downspouts away from the house.
I use Concrobium on mould. It is non-toxic, and you can paint over it. I don't know if you can get it in that area.
http://www.concrobium.com/en-can/blog/2017/01/28/concrobium-moisture-grabbers-calling-snowbirds/
As you posted the pictures on the humid walls. It looks like the moisture is the main reason behind the excessive humidity. So, I would recoomend some possible step that helps you in resolving your problem:
I hope by following these of the things you can easily fix your excess humidity problem of your house.
If you did not get benefit by following above steps then you can contact us for quick solution to stop the excessive humidity problem.
I think you should solve root causes, not just the result of the excessive humidity. Here is a good explanation of what causes high humidity in a house and how to lower it https://hvacguides101.com/high-humidity-in-house/
If your house is new, remember cement holds moisture for quite some time...I would leave the windows and doors open...maybe even use a fan to move air. That is what we did in Central America. May take a year or two to completely dry out your cement walls, ceiling and floors.