Outdoor cushions and UK weather do not mesh well together; moist air, downpours or even just the ever present cool evenings create a mould-and-mildew-loving climate. Fortunately, most issues can be avoided with a little common sense on your part.
To start, cushions should be allowed to dry completely after rain or extensive dew. Moisture can even get trapped in seams and piping of “water-resistant” fabrics. If the covers have zips, unzip if (just to allow some air in).. then place them on their side.. either beside or behind the radiators and leave for a few hours. Keep the fabric off your furniture while wet.
Next, improve airflow. Humid air creates mouldy hotspots. Avoid forcing pads into a garden storage box, either opt for ones with vents or leave the lid open a little on dry days to reduce condensation. For details on Fabric for outdoor furniture, visit https://extex.co.uk/
Lastly, during nights and wet spells store them accordingly. Breathable cushion bags or fabric storage sacks work better than sealed plastic ones that will trap moisture. If all of you have is the plastic storage containers, add a bunch of moist absorbers and make certain cushions are bone dry.
Keeping things clean and cleaning regularly is also a good plan. Clean spills up immediately and brush off leaves/pollen (it contributes to moisture held in). For a more thorough cleaning, refer to the care label and opt for a mild detergent: harsh bleach can strip it of its outdoor-friendly coatings.
Lastly, consider an outdoor fabric protector spray. Cushions that are sprayed will still absorb moisture and dirt but it will be far easier to clean.
In a British summer, cushions are apt to get wet and stay that way so regular drying out can pay dividends.
