The single most common mistake in roof repair is fixing the spot directly above the stain. Water almost never falls straight through.
When water gets past the covering it lands on the underside of the sheathing, and from there it follows whatever is available — the slope of the deck, the line of a rafter, a run of wiring. It can travel several feet horizontally before it finds a low point and drops. So the wet patch on your bedroom ceiling marks where the water finally gave up, not where it got in, and the entry point is generally uphill of it.
This is why an attic inspection is worth so much when the attic is accessible. In daylight the trail is often visible: darkened sheathing, rusty nail shanks, a tide line along a rafter. Follow it back up the slope and it usually ends somewhere entirely unsurprising.
Because the entry points repeat. Flashing where the roof meets a wall or a chimney. Valleys, where two slopes concentrate a large volume of water into one narrow channel. Pipe boots, whose rubber collars perish and split after ten to fifteen years of UV — an extremely common culprit and a cheap fix. Skylight flashing. Nail pops. The open field of a roof, away from any detail, is one of the least likely places for a leak to start.
Timing is diagnostic too. A leak that only appears in a driving southerly is wind-driven rain being pushed up under a covering that sheds ordinary vertical rain perfectly well — a different fault from one that drips in any steady downpour. And water appearing on cold clear mornings with no rain at all is usually not a leak; it is condensation, which is a ventilation problem and needs a completely different fix.
If you have a stain and no idea where it comes from, take a photograph of it and note whether it only happens in certain weather. That is genuinely useful information, and it often shortens the search considerably.
Talk to HJ Gomez Roofing
Tell us what the roof is doing. We will arrange a time to come and look, and tell you plainly what it needs.