Stop water finding its way in through a cracked rivet, seam or window seal on your Airstream
A leak on one Airstream was bad enough that even a dealer couldn’t find the source. Some research led the owner to this product, which sealed it.
– Amazon customer review
Airstream trailers are riveted aluminium shells, and those rivets, panel seams and window seals all rely on a thin bead of sealant to keep water out. As they age, that seal shrinks and cracks, letting water track in behind the panels.
Captain Tolley’s Creeping Crack Cure uses capillary action to seep into these hairline cracks and seal them from the inside, without drilling out a rivet or stripping back a seam.
A 1970s Airstream owner used it to seal rivets and seams, and found the sealant wicked into the smallest gaps exactly as expected, drying clear.
– Amazon customer review
Another Airstream owner called it great for sealing panel seams, saying everything else they’d tried left a big mess.
– Amazon customer review
One long-time Airstream Classic owner uses it around doors, windows and the body belt bands, especially on an older unit, and said no seams have needed redoing since.
– Amazon customer review
*For best results, apply in dry conditions above 10°C / 50°F and keep the area dry while it cures. Being under cover isn’t the same as being dry. A garage or storage space can still be damp, and that moisture in the air slows curing and can dilute the sealant before it sets. Check the air feels dry, not just that the trailer is out of the weather, and allow extra time in a cold or damp space.
This works best on a true hairline crack or gap, less than 0.8mm wide, around a rivet, seam or window seal. If you can see a fine line but can’t fit a fingernail into it, it’s a good match. A rivet that’s loose, or a seam with a visible gap, needs refitting or filling rather than sealing.
On bare, uncoated metal it can occasionally cause light rusting over time on steel fixings, though this is less of a concern on aluminium rivets specifically. It works best on coated or sealed surfaces, and any excess should be wiped off straight away with damp cloth. Industrial wet wipes are useful for removing dried stains.
Several owners have used it to treat a general area, such as a full seam or a cluster of rivets, without being certain of the exact source, and found it stopped the leak anyway. It’s worth treating the whole run rather than searching for one precise spot.
Yes, once fully cured. Apply it in a dry spell and give it at least 3 days before exposing it to rain or a wash, so the sealant has time to set properly.
Exterior trim and mouldings flex with temperature changes and road vibration, opening fine cracks that let water track in behind the panels.
Caravan and motorhome shower trays are lighter than a home tray and flex with movement and changing temperatures, so hairline cracks in the sealant are common.
Rivets and fastenings loosen with age and vibration, leaving tiny gaps that let water creep in - a common issue on riveted trailers like Airstreams.
Grab handles, roof vents, awning rails, roof lights, and other fittings bolted through the bodywork all rely on a seal around each fixing point to keep water out.
