What is the best sealant to use on a caravan?

Furthermore, what do you use to seal a caravan roof?

Butyl Mastic (Ezycaulk Cartridges) For many years caravans were sealed using a a Butyl Rubber / Mastic or sometimes known in Australia as Caulking compound. This type of sealant is a non-hardening, water and dust proofing compound that forms a tough skin but should remain permanently soft and sticky beneath.

Also, how do you fit a caravan window seal? Measure against the old seal and allow an extra 25mm , cut with either scissors or a stanley knife. Spread the seal and fit to the window frame ( note make sure the seal pushes into the corners well ). Push the seal down on the outside edges ( see my thumb ). Trim the seal once you've fitted it around the window frame.

Regarding this, how do you waterproof a caravan roof?

Prepare the roof by ensuring it's as clean as possible.

Refer to Liquid Rubber preparation Guide. You can download it HERE.

Detail with bandage and Liquid Rubber.

Apply 1 coat of Liquid Rubber.

Apply 2 coats of Premathane Top Coat allowing to dry in between coats for 24 hours.

How do you find a leak in a caravan roof?

The most common way of finding a leak is to wet the caravan roof and watch for the points the water is seeping through. What you'll need to use to seal the leak depends on the size of it. For a small leak, silicone will do the job nicely, but it might not be tough enough to withstand larger failing areas.