Fenwicks Overwintering Fluid

We have fully tested the Fenwicks Overwintering Fluid and here's our review of this product:

Overwintering Fluid

If, like us, you get extremely fed up of spending hours cleaning off green algae and the general winter build-up of dirt on your caravan, then this is the product for you !

I personally think this is a brilliant product which will save you hours of hard labour.

After giving my caravan a good wash down, I simply spray the overwintering fluid all over the caravan using an ordinary garden sprayer (although you can use a sponge or cloth but this will obviously take a lot longer). This will then provide invisible protection all over your caravan.

When your caravan comes out of hibernation in the spring, you simply need to give it a quick wash and you will be amazed how easily the build up of dirt washes off and, more importantly, there is no sign whatsoever of the dreaded green algae.

I gave some to my father-in-law last year because he was always complaining about the number of times he had to clean his conservatory roof because it became covered in dirt and green algae. He used it on that and it worked a treat over winter.

Overwintering Fluid Benefits

The main plus points:

  • Invisible winter protection
  • Easy to apply
  • Washes dirt off very easily
  • Also protects against pollution, acid rain and bird lime
  • Easy to apply using a garden sprayer
  • Competitive price
  • A once-a-year job!
  • Other uses, e.g. conservatory roof

The following is taken from the Fenwick's website about their Wintering Fluid:

Safe for use on caravans & motorhomes Fenwick’s Overwintering Exterior Protector is a protective ‘jacket’ for the winter months. Its unique properties actively repel water, dirt and algae without the need for a cover. Simply apply after cleaning. It is suitable for use on plastics, aluminium, glass, acrylic windows, GRP, ABS, fibreglass, decals, sealants, paint and much more.

Available in 1 Litre Bottle


Step 1: Clean unit with either Fenwick’s Caravan or Motorhome Cleaner and allow to dry.
Step 2: Mix 1 part Fenwick's Overwintering to 4 parts water. (Usually half a litre of Fenwick’s Overwintering with 2 litres of water will cover most units.)
Step 3: For best results apply using a garden spray or a sponge or a brush.Cover all surfaces evenly from the bottom up, and leave to dry. It will take 3 to 4 hours to dry properly.
Step 4: To remove Fenwick’s Overwintering use a 1 to 10 solution of Fenwick’s Caravan Cleaner or Fenwick’s Motorhome Cleaner.

Have you ever tried Fenwicks Overwintering Fluid? Let us know what you thought of this product.

Share this page:
Enjoy this page? Please forward it on. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.