Most leaks under the awning come from that joint and are an easy fix by adding caulk to the joint.
Repair leak by awning.
Try to overhang one edge of the tape over the strip beneath so there aren t any gaps think of them like shingles.
However you may want to take a repair kit shown below with you on holiday in case a leak does happen.
First lay the awning on a flat surface and then using the repair tape cover one side of the leaking area with multiple strips.
Place a ladder next to the aluminum awning.
Use a sealant that is uv resistant exterior grade and designed for seams and metal.
Put leather gloves on to protect from cuts while working with the aluminum awning.
Put a dab of the silicone caulk on your finger.
That way you can repair the leak.
If it is a darker fabric use the clear silicone caulk.
If it is a light colored fabric use the white silicone caulk for the repair.
The sealant will fill the crack as it dries and plug the leak.
Fix a tear in a vinyl patio awning by attaching a patch of vinyl with similar size and weight characteristics as the awning.
Wash the awning with a mixture of warm water.
Depending on the size of the leak there are a few methods for fixing cloth awnings.
Step 2 spread vinyl glue on both surfaces and allow it to dry then position the patch over the torn area.
The surface must be free of dirt grease oil rust tar and any other contaminant that will inhibit a proper seal.
The two surfaces should bond immediately.
Clean the area surrounding the leak.
Check the awning fabric for holes.
Make sure the awning fabric is clean and free of mildew before repairing the holes.