Moisture under coverings – causes & prevention
Moisture under covers is one of the most common issues with garden furniture covers. Important: Moisture is usually not caused by rain from outside, but by incorrect use, insufficient ventilation, or unsuitable materials.
Why does moisture form under coverings?
- Condensation due to temperature differences
- Do not cover furniture that is not completely dry
- No or insufficient air circulation
- Materials that are too tight-fitting and non-breathable
- Cover rests permanently on the floor
- If the furniture is placed on the lawn, for example, rising damp is often a problem.
Condensation: a physical effect
Temperature fluctuations between day and night cause warm air under the cover to cool down. The moisture contained in the air then condenses—similar to what happens on window panes.
Comparison: Furniture without vs. with proper cover
| criterion | Incorrect coverage | Proper coverage |
|---|---|---|
| Material | Not breathable | Breathable |
| air circulation | Hardly present | Sufficiently given |
| Kondenswasser | Frequently | Heavily discounted |
| risk of mold | Increased | Low |
| condition of furniture | Damp / musty | Dry / protected |
How can moisture be prevented under coverings?
- Always cover furniture with a dry cover
- Use breathable materials
(breathability) - Do not seal the cover to the floor
- Leave sufficient space for air circulation
- No permanent tension on fabric and seams
- If the furniture is placed on grass or concrete slabs, we recommend regularly checking underneath the cover.
Ventilation openings – useful or not?
Additional ventilation openings may be necessary for non-breathable covers. However, this can also allow additional water to get under the cover when it rains.
With breathable covers from wettertuete.de, this is usually not necessary if:
- the furniture is dry
- the cover does not close tightly against the floor
- natural air circulation is possible
Other important factors
(Dimensionallystable covers)- Correct fastening
(Fastening systems)
(Measuring dimensions correctly)
Continuous rain on garden furniture covers
Frequently asked questions about moisture under coverings
Is moisture under coverings normal?
To a small extent, yes—the crucial thing is that it can escape again.
Is moisture caused by rain from outside?
Usually not—condensation is the most common cause. Rising damp should not be underestimated either. It often becomes a problem when, for example, furniture is placed on the lawn.
Are waterproof covers better?
Not necessarily. Without breathability, the risk of condensation increases.
Are ventilation openings sufficient?
These may be sufficient for non-breathable materials. However, water can also penetrate through the openings—air circulation is more important for breathable fabrics.
Can mold develop?
Yes, if moisture is trapped permanently.
Should the cover extend to the floor?
No, a small gap is important for air exchange. It should be at least 2-5 cm.
How often should I ventilate the cover?
For longer periods of inactivity, we recommend lifting the device occasionally. We recommend doing this about once a week.
Which covers are best at reducing moisture?
Precisely fitting, breathable covers such as those from wettertuete.de.
Conclusion
Moisture under covers is not a product defect, but usually a question of material, fit, and application. Condensation and moisture damage can be reliably prevented with breathable covers, dry furniture, and sufficient air circulation.
