Many homeowners face the return of mold just months after a renovation

Many homeowners face the return of mold just months after a renovation.

Fresh paint, new windows, ventilation grilles everything seems fixed, yet the problem comes back.

Why? Because in most cases, only cosmetic repairs are done, without proper engineering diagnostics.

Mold is a symptom, not the cause. Painting over the wall or covering it with drywall only hides the consequences it doesn’t eliminate the source of moisture.

Materials can remain damp for months, even years. If residual moisture isn’t measured and structures aren’t properly dried, you're creating perfect conditions for mold to return.

Ventilation and insulation mistakes are also common.

For example, installing new windows without a proper exhaust system turns the house into a sealed steam room. Without constant air exchange, moisture builds up.

External wall insulation (capoto), done based on advice from builders or neighbors and without expert diagnostics, is another critical mistake it often leads to hidden condensation and serious long-term damage.

Choosing the wrong materials makes things worse: porous plaster, moisture-retaining paints, or drywall in damp areas all contribute to the problem.

It’s essential to choose materials based on the building’s microclimate, wall orientation, and structure.

And even after high-quality repairs, follow-up control is necessary: measuring residual moisture, testing ventilation, monitoring the microclimate over time.

Without that, there’s no guarantee.

Mold doesn’t forgive superficial fixes.Only engineering diagnostics, precise measurements, and a well-thought-out plan deliver a lasting result.

That’s exactly what I offer my clients: not just hiding the stains, but eliminating the root cause for good.