The first step in removing
mould is to let the canvas dry to kill the mould & then brush the
effected areas with a stiff bristle brush.
To neutralise the spores add two or three drops of oil of cloves per
litre of water & spray the area & let dry. Oil of cloves is
available at chemists. You can also try 20 to 50 millilitres of
white vinegar per litre of water on black mould. It is a good idea
to try any procedure on a part of the canvas that is not in plain
For spots of dirt on canvas you can use grated Sunlight soap which
is first added to boiling water to make a paste, then add the paste
to water & mixed it in. Hose the canvas down & gently brush on over
the effected area with a soft bristle brush, finally hosing off all
the soap. Do not use detergent.
Anything stronger like a commercially available mould remover may
remove the waterproofing from the canvas, so you may need to apply a
If you need to reseal your canvas check to see if there is a tag
sewn onto it canvas, mostly around the doorway, with canvas
manufacturers name & care instructions. If not, give the camper
trailer manufacturer a ring & ask which canvas waterproofer they
There are two types of resealer. A silicone based type like Aqua
Proof which is water washup. If used on the wrong canvas type it can
leave a milky residue, particularly noticeable on dark coloured
The another type of resealer is wax based like Dry Seal by Joesph
Lyddy & washup in mineral turpentine.
Klaus from InFront Camping has
BellaProof brand waterproofing suitable for Bradmill, Brella &
The easiest way to apply waterproofing is with a
small roller. Only apply a small amount into the tray at a time &
always mix the contents of the container before tipping into the
Always try any of the above on a small area of canvas which cannot
be normally seen.
written by Rob