Can insulation cause damage to my property
The answer is YES if you don't have adequate ventilation.
Do you need good insulation, YES is the answer but moisture will build up more than before so ventilation is needed to manage the moisture day in day out.
Opening won't help manage the moisture in your property, it will more likely add humidity in summer and damp air in winter.
Passive ventilation will flush your house all day, it's a bit like folding your house inside out and hanging it the clothes line on a nice day every day.
This will stop mould, crying windows make heating cheaper, and prevent expensive and unnecessary maintenance.
Air quality is a big issue in todays world and super vent filters out VOC allergies and odours as well as flushing damp from the property.
Super vent is the best insurance policy for your home or investment.