Repair Cracked Roof Box

It have several cracks a couple of holes and was in bad need of painting.

Repair cracked roof box.

Wipe the area clean using alcohol wipes. Our box repair methods have come a long way over the past decade or so. West systems epoxy makes a gflex kit specifically for plastic boat repair. You might be tempted to throw caulk at the problem but that solution won t last long.

Initially in the late 1990s we would apply abs patches cut pieces of abs plastic attached by abs cement to the hole or cracked section of the box. Bought a new one to replace it for the owner but did a perfectly good repair with sikaflex on the cracked one which lasted perfectly well but wasn t. We lightly sanded down the area of the crack extending 6 8 all around. Also look for pulled or missing nails at the base s bottom edge.

Replace them with rubber washered screws. Working on the inside of the box start by sanding the area around the break. The other method is plastic welding which can be diy with the proper hot air welder or any body shop that has one. This would be a pretty good solution but ran the risk of coming apart after a couple of years.

Roof boxes are generally made of abs. Cleaning the crack you must first clean the cracked area to ensure that the repair material will bond. We applied a layer of abs cement to the surface of the box laid down a layer of fiberglass and brushed more cement on until it was saturated. How to fix a roof box in 7 easy steps31st august 2016 step 1.

Use a toothbrush or a fine toothed wire brush to remove any debris from the crack. Check for cracked housings on plastic roof vents and broken seams on metal ones. Will work on your box too. In this video i repaired my thule cargo carrier box.

1 to what ss7 said drill a small hole at each end of the crack. I used fiberglass kit auto b.