If your gutter is aluminum use a piece of a soda can.
Seal gap in gutter.
Allow the caulk to dry before you apply paint.
If it is steel you can find a coffee can that can be cut with tin snips.
Again it s essential that the area to be fixed be clean of leaves and other debris.
If there is a gap in the joint you should use your cardboard or plastic spreader to force sealer into the joint.
A waterproof sealing product such as ge clear gutter caulk available on amazon is easy to use.
Simply squeeze into cracks and holes then apply a further coating around the entire gutter joint.
When gaps get too large you.
Apply caulk to nail holes also for added protection.
How to caulk large gaps.
Use colored caulk to match the current paint color if you are not repainting the fascia boards.
Gap filling sealant adiseal has high gap filling properties meaning it will seal even if the hole in the gutter is big where the leak is coming from or there is a big gap in the gutter joint.
There is a technique when it comes to filling or caulking larger gaps or cracks and i will show you how.
Adiseal will also avoid slumping when used in overhead applications due to it s high gap filling property.