Step one: Assess and prepare. Identify the leak or the area that needs repairing. Look for signs of water ingress, damp spots or holes in the felt. Clearly mark the area or areas that require patching. Use your own judgement to decide what safety precautions to take, such as wearing gloves and goggles, as there may be a risk of debris falling. simply slip a patch down between the felt laps from inside loft the space. That will not last,it will move eventually.The only way to repair and it be 100% effective and for it to last is from the top side.Anything else is tempory aka botch job. If its done properly it will stay there. When searching for gutter parts, such as gutter fittings, gutter guards, and gutter hardware in a home improvement store, you will likely find them in the roofing department. Below, learn how to fix gutters yourself and diagnose the most common problems like overflowing, sagging, leaking, clogs, improper slope, and loose downspouts. Nope, this is a bad idea. You never fix the roof from the inside, and worst case scenario, the water is re-routed by your "fix" somewhere else, like inside the wall, where it does extensive but hidden damage which will be blamed on you, because you fixed the roof incorrectly. – haimg. Mar 27, 2017 at 13:10. 3. Any hardware store should have it, just ask for a sealant for your tile roof. The destroyed tile needs to be placed above the replacement. You can do this with a crowbar. Lift the tile and let the crowbar hold it there. Smashing the tile with a hammer works but you need to be careful not to damage other tiles. Turn off your home’s main water supply, and make a note of the meter reading. Wait several hours, and check the meter again. If the reading goes up, the leak is inside the house. If the numbers don’t change, the leak behind your home’s walls is probably caused by: Clogged gutters or drain spouts. Temporary Solutions for a Leaking Roof. Having identified the source of the leak in your roof, the next step involves temporary solutions to control the situation until a more permanent fix can be obtained. Addressing the problem with a temporary fix is like applying a band-aid—it keeps water out but isn’t a long-term solution. Step 3. – Make A Temporary Leak Patch. Once you’ve found the leak you can make a temporary leak patch from some plywood or shingle and some roofing tar. Use a putty knife to spread the tar into the leaking hole on the inside of your roof. Place the shingle or plywood onto the tar and spread more of the tar around the edges of your patch Catch the Water. If you realize that there is a leak in your roof and water is coming inside, the first thing you need to do is catch the water using a bucket or bowl. If the leak is bad, make sure to empty the bucket frequently so the water does not overflow and cause damage to the floor or surrounding areas. Step 2: Seal The Leaking Point. Sealing a leaky spot on your roof requires patience. After locating the affected area, wait until the rain has subsided and the affected spots are dried up before taking action. Wet surfaces may affect adherence, and this can affect the intended results. 5gTOGvo.