The canvas used in our annexes is treated to increase water resistance and inhibit mould whilst leaving the canvas breathable.
Mildew on canvas annexes is generally caused when the canvas has not been dried thoroughly or has been stored in damp conditions. Mould thrives in damp, dark environments and can grow in as little as 24 hours.
It can eventually rot the canvas and has been associated with respiratory infections, allergies and asthmas. Mould should therefore be removed as soon as possible to avoid health problems.
After treating the canvas for mould, the annexe will then need to be re-treated for waterproofing.
Removing mildew on canvas
Preparation
- Set the annexe up in the sun and open all windows flaps for maximum ventilation to completely dry the canvas.
- Brush the canvas to remove the mould spores then vacuum the canvas to remove any remaining spores.
Solution options
Vinegar
- Create the solution by diluting 1 part vinegar to 4 parts water.
- Apply the solution evening on the fabric using a soft brush or broom, rinsing as you go.
- Rinse and re-rinse to remove any residual cleaning solution.
- Allow to dry completely before folding and storing.
White King
A standard method of removing mildew from canvas is to use a diluted solution of White King. This is an effective way of removing mildew growth and killing the mildew spores.
- Create the solution by diluting 1 part White King® to 3 parts water.
- Apply the solution evening on the fabric using a soft brush or broom
- Thoroughly hose off the solution after 15 minutes and continue hosing after the run off is clear (don’t allow the solution to remain on the canvas for more than 20 minutes without thoroughly rinsing or damage may occur)
- If mildew is not completely removed, repeat the application.
- Allow to dry completely before folding and storing.
Avoid mould on canvas
Your canvas annexe should be dried thoroughly before being packed away after each use. If you need to vacate your caravan site before the annexe has had an opportunity to dry completely, erect the annexe, or lay it flat to dry, when you get home.
Don’t allow the canvas to be stored if still damp or if the storage environment is damp.