However when it is not practical to climb up on the roof to fix a leak such as during the winter months you can repair a leaky roof temporarily from the inside if you can determine where the leak is occuring from the underside of your roof.
Repair leaky roof in winter.
If a leak is difficult to find enlist a helper and go up on the roof with a garden hose.
Isolate areas when you run the hose.
For loose or damaged shingles remove them by pulling the nail out and scraping glue from underneath the shingles before replacing with new ones.
The shingles can be warmed up with a propane torch.
Electric tape works well but it must be applied before the winter season begins a pickaxe works well with risk to further damage to your roof.
Sealing the shingle to the object can be accomlished with a roofing sealant available at menards lowes etc.
Make use of the flame carefully on the curled shingle edges.
Locate the leaking source and search for the damaged or missing shingles and make a list of the areas to be repaired.
Check plumbing vent boots and roof vents if water is entering from that area to cause the leaking roof.
Various conditions can cause roof leaks and the origination point may be difficult to detect.
2plumbing vent boots and roof vents.
Look for cracks in the base of flexible rubber flashing or broken seams in metal varieties of vent pipe flashing.
To repair a leaking roof with curled shingles straighten the shingles with a heat source like a hair dryer and reattach them with asphalt roof cement or compound.
The rubber gasket that surrounds the vent pipe could be rotted.
For example soak the downhill side of a chimney first then each side then the top on both sides.
The secret to caulking in winter time is to heat the sealant in the tube.
Start low soaking the area just above where the leak appears in the house.
The roof shingles should be softened and flattened as the shingles tend to curl up in winter.
Roof leaks must be repaired from the outside to ensure the problem is corrected.
If there is ice on the roof and it can be cleared do so.
For flat roofing look for cracks.
Using salt on the roof edge may be the safest and easiest way.