Do a small area at a time to really pinpoint the cause of the leak.
Roof leak ok to seal from attatic.
Use enough water to mimic heavy rains.
You should be using the repair fiber in order to achieve a long lasting.
Heated rooms built into attics often have open cavities in the floor framing under the walls.
Make a temporary leak patch.
Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be.
They can be several feet above the leak or to the right or left of it.
At the very least shingles.
Penetrations can include plumbing and roof vents chimneys dormers or anything else that projects through the roof.
Walk carefully on the ceiling joists in the attic or use a sheet of plywood to walk on so you will not accidentally put a hole in the ceiling panel.
Water tends to follow along roof rafters or roof decking.
Possible solutions flexible roof sealant apply flexible roof sealant from a can or tube to holes gaps and loose shingles.
If the leak isn t obvious have a helper watch in the attic while you get on the roof with a garden hose.
Make the final repair as soon as weather permits.
If you have attic access the easiest way to track down a leak is to go up there with a flashlight and look for the evidence.
Rainy weather causes the first type of leak to be discovered.
Begin soaking low on the roof just above where the leak is visible inside the house.
It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow.
Fold the bag over and stuff it into the joist space under the wall.
Repairing a roof leak from the inside is a temporary fix only.
Box out light fixtures.
Water is insulation s enemy.
Be sure to check any areas where the roof comes to a juncture or where there are any added items such as exhaust pipes.
Run water over the low side of the penetration for several minutes while the helper watches for any water droplets.
This can be done by pouring a small amount of water over the area you suspect the hole in your roof is located and checking for the leak underneath.
Long piece from a batt of fiberglass insulation and place it at the bottom of a 13 gallon plastic garbage bag.
Some skylights leak from condensation or from other water leaks that have traveled down rafters inside the attic.
This video explains how to properly use flex seal to seal a roof leak in the corner.