Defogging in Saint-Jean-sur-Richelieu

Defogging in Saint-Jean-sur-Richelieu

Saint-Jean-sur-Richelieu, traversée par la rivière Richelieu, possède un riche patrimoine militaire et architectural hérité de la garnison et du Fort Saint-Jean. La proximité de la rivière augmente le taux d'humidité ambiante, ce qui accélère la détérioration des joints d'étanchéité des fenêtres et la corrosion de la quincaillerie, particulièrement dans le Vieux-Saint-Jean et le secteur Iberville.

Vosthermos offers a complete defogging service to Saint-Jean-sur-Richelieu residents. We serve all neighborhoods including Vieux-Saint-Jean, Iberville, Saint-Luc, L'Acadie, Secteur du Fort.

Common problems in Saint-Jean-sur-Richelieu

Understanding the three types of fog in a sealed unit

Not all fog is identical, and the type of fog determines whether defogging is the appropriate solution. Dry fog (or halo) appears as a permanent whitish haze between the panes, often more visible around the edges. It is caused by mineral deposits left by repeated evaporation of moisture that has infiltrated and dried out over time. This type of fog is the most common and generally responds well to defogging.

Wet fog appears as visible droplets or condensation between the two glass panels. It indicates active moisture infiltration through the broken sealant. If the wet fog is recent and the sealant is not too deteriorated, defogging can be effective. In cases where the infiltration is severe and long-standing, sealed unit replacement is often preferable.

Misty fog presents as a diffuse, uniform haze between the panes. It often results from a combination of mineral deposits and residual moisture. This type of fog can be more difficult to treat by defogging, and our technician will honestly assess the chances of success before proceeding.

Frequently asked questions — Saint-Jean-sur-Richelieu