Stop a hairline crack or leaking edge on a caravan or motorhome shower tray seals
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, and water can soak into the floor beneath before you notice.
Captain Tolley’s Creeping Crack Cure uses capillary action to seep into these fine cracks and gaps, less than 0.8mm wide, and seal them from the inside, without removing the tray or any fittings.
“I remembered this product from a few years back in the caravan press… managed to get some to tackle a leaking shower cubicle. Very impressed, followed the simple instructions and the problem has been solved without the need to remove any fittings or take anything apart. Great easy fix at a very reasonable price.”
– Keith Lea, Judge.me review
“Have successfully fixed leaks in campervan roof, shower door frame, and various other places.”
– Anthony, Judge.me review
*Cure times depend on ambient conditions. The sealant cures faster on a completely dry tray in a warm, ventilated space above 10°C / 50°F. Cold or damp air slows the process, and moisture can mix with the sealant and dilute it before it sets. Keep the tray dry while it cures, and allow extra time if the caravan has been sitting cold or damp.
Fine, superficial hairline cracks in the tray that are less than 0.8mm wide, and hairline gaps where the tray meets the wall, cubicle or door frame. It works best on cracks that stay still. Cracks with a hollow space beneath them, or a slightly larger crack, are better filled with a gap-filling repair first, with Creeping Crack Cure used on the fine cracking around it.
Caravan and motorhome trays can flex more than a solid home tray, and the sealant works best on cracks that stay still. If your tray moves noticeably underfoot, check it’s fully supported underneath before you treat it.
It’s best done when the caravan is dry and above 10°C / 50°F. If it’s been sitting cold or damp, warm and ventilate it first, for example with a heater on hook-up, and allow extra cure time before using the shower.
A few rounds. The crack often runs deeper than it looks from the top, so it can take more than one sitting to build up enough sealant to hold.
Exterior trim and mouldings flex with temperature changes and road vibration, opening fine cracks that let water track in behind the panels.
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.
Riveted aluminium panels, seams and window seals all rely on a thin bead of sealant to keep water out, and that seal shrinks and cracks with age, letting water track in behind the shell.
