Four tips for solving loft damp problems

October 05,2021

If you have a poor insulation loft, there is more likely to be a condensation problem due to the rising warm air. When the warm and humid air contact the cold surface, like a wall or ceiling with poor insulation, it will form a droplet. And If this problem is not addressed, mold can eventually develop. Increase the insulation isn't the best way to reduce condensation. Ventilation and decreased humidity also are essential.

Add more insulation to the loft space to reduce condensation caused by temperature differences. However, adding the insulation can be a problem if your loft is at the top of the house, and the ceiling is the roof. Because the extra insulation decreases the air circulation under the roof, and if the roof can not breathe, the hot sun will destroy the top quickly. However, if the loft is under the attic, try to increase ceiling insulation as much as possible.

Increase ventilation the key to keeping the condensation of the loft down is proper ventilation. If the loft has a window, keep it cracked, the air will form natural convection from the loft entrance to the window. If it doesn't have a window, you can install an exhaust fan or use a portable fan to circulate the air. And if necessary, placed the fan in the farthest corner of the entrance or put it in the place where air stagnates and the droplet forms.

Many reasons can cause humidity in the average household, like improperly venting clothing dryers, ventless gas heaters, bathrooms that lack ventilation, and other resources. Among them, poor gas heaters and bathroom ventilation are problems you should address as soon as possible, and they can cause many issues, including loft condensation. Consider replacing the vent-less heater with a ventilation one. However, if the humidity is a chronic problem, you should use a dehumidifier to reduce it.

If you can't increase the ventilation to circulate the loft's standing and humid air, go the opposite way. First, reduce the convection current and draw the damp air upward in the first place. Caulk all interior trim to prevent air seep from behind into the frame, and it may have a direct path to outdoors. If you have a central heating system, keeping the insider loft register open can help balance the temperature between the loft and the room downstairs to reduce air exchange.