Water on windows
Regular morning moisture on glass and frames often indicates high indoor humidity and cold surfaces.
What a useful investigation should establish.
A proposal is more useful when it explains the likely cause, the evidence, the affected construction and why a particular repair is being considered.
- Review where and when condensation appears, including seasonal changes and room usage.
- Measure relative humidity and temperatures and look for cold bridges or poorly heated surfaces.
- Check bathroom and kitchen extract performance, duct routes, terminals and background ventilation.
- Exclude plumbing leaks, rain penetration and other damp sources before treating the issue as condensation.
Options, not assumptions01 02 03 04
How the repair may be approached.
Extract moisture at source
Appropriately specified bathroom and kitchen extraction removes water vapour before it spreads through the dwelling.
Provide planned air supply
Background or whole-dwelling ventilation needs a route for replacement air and should be designed as a system rather than isolated fans.
Reduce cold-surface risk
Suitable insulation or thermal-bridge improvements may help, but details must avoid creating concealed moisture risks.
Manage heating and moisture loads
Steadier heating, covered pans, drying clothes appropriately and keeping vents operational can support the physical improvements.
Important limitation
A larger fan or a dehumidifier is not automatically a complete solution. Ventilation must be appropriate for the dwelling, installed correctly and maintainable. Condensation measures will not repair penetrating damp, a leaking pipe or moisture rising through a wall.