Shingle damage could come from sun exposure wind hail falling debris ice or just plain age.
New roof leaking from ice.
In other words skylights stack lines chimneys and valleys are the most common places to see a leak if the tiles themselves are in good shape.
Ice dams happen when ice melts trickles down the roof then freezes again.
Find them locally at hardware stores or home centers improved attic insulation and ventilation are usually the best ways to prevent ice dams but they might not be effective in this complicated leaky roof situation.
We have found that the only way to cure an ice dam and prevent one in the first place is to.
If you see icicles hanging from your roof you most likely have an ice dam.
The majority of roof leaks especially on new roofs take place around protrusions in the roof.
Water then pools above the ice and leaks into your roof.
In northern climates ice dams can cause major problems.
Shingle hail damage can leave a crack in shingles over time and result in roof leaks.
Insulate the living space well enough to prevent conduction and convection of heat.
If you notice any spots where granules are missing from the shingle surface you may have hail damage.
A quick scan of your roof from the ground may also yield some information as well.
The roof must.
An ice dam forms as a ridge of ice along the lower edge of your roof and prevents melting snow higher up on the roof from flowing past the dam.
Seal all points where warm air leaks from the living space into the spaces immediately below the roof sheathing.
In a house without gutters water flowing over the roof edge will form icicles often huge ones.
They simply freeze up and fill with ice causing water to flow over them.
What is an ice dam.
If leaks continue to occur from ice dams consider installing roof edge heating cables.
Ice dam roof leaks.