Maybe it’s a brown stain spreading across the ceiling after a heavy Philadelphia downpour, or a steady drip landing on the bedroom carpet at two in the morning. If your roof is leaking and you’re wondering what to do right now, take a breath. A few quick, sensible steps in the first hour can keep a small problem from turning into a big one. Here’s exactly what to do, step by step: limit the damage, find where the water is coming from, know what you can safely do yourself, and know when to call a professional.
Step 1: Limit the Damage Right Away
Your first job isn’t fixing the roof. It’s protecting your home and everyone in it. Work through these in order:
- Put safety first with electricity. If water is dripping near light fixtures, ceiling fans, outlets or appliances, switch off power to that area at the breaker panel, but only if you can reach the panel while standing somewhere dry. Never touch wet wiring, fixtures or outlets. If you’re unsure, stay out of the room and call an electrician.
- Contain the water. Get buckets, pots or storage bins under every drip. Lay down old towels around them to catch splashes. A piece of string or cloth tacked to the drip point and hanging into the bucket can guide water in quietly and cut down on splashing.
- Move your valuables. Get furniture, electronics, rugs, documents and keepsakes out of the way. Anything you can’t move, cover with plastic sheeting or a tarp.
- Stay clear of a sagging ceiling. A patch of ceiling bulging with trapped water can give way suddenly. Keep people and pets out from under it, put a bucket nearby, and call for help rather than trying to deal with it yourself.
- Take photos. Photograph the stains, the dripping water and any damaged belongings, and note the date and time. If the leak followed a storm, that record will help if you need to file an insurance claim.
Step 2: Find the Source of the Leak (Safely, From Inside)
Once the water is under control, it helps to get a rough idea of where it’s coming in. You don’t need to climb onto the roof to do this. In fact, you shouldn’t. Most of the useful detective work happens indoors.
- Check the attic if you have safe access. Bring a good flashlight, step only on the joists or a solid walkway, and look for wet wood, damp or matted insulation, dark water trails, or daylight coming through the roof boards.
- Follow the water uphill. Water rarely drips straight down from where it enters. It often runs along rafters or the underside of the roof deck before falling, so the wet spot on your ceiling may be a few feet away from the actual problem.
- Look at the usual suspects. Leaks most often start around chimneys, skylights, vent pipes and valleys, where flashing seals the joints. On the flat and low-slope roofs so common on Philadelphia rowhomes, leaks often show up where water ponds or where the roof meets a parapet wall or a neighbor’s roof.
- Mark what you find. Snap a photo or stick a piece of tape where the water appears to enter. It will save your roofer time when they arrive.
If you can’t find the source, that’s completely normal. Some leaks only show up in wind-driven rain, and some sit behind finished ceilings. A professional roof inspection will track it down properly.
Step 3: Temporary Fixes Until a Pro Arrives
Here’s the most important piece of advice in this guide: do not climb onto a wet, icy or storm-damaged roof. Wet shingles and membranes are slippery, damaged sections can be weaker than they look, and a fall from a roof can be life-changing. Tarping a roof is a job for professionals with the right safety gear, not a homeowner on a ladder in the rain.
That doesn’t mean you’re helpless. These safe, inside-the-house measures can buy you time while you wait:
- Keep emptying and repositioning buckets so nothing overflows overnight.
- Protect the attic floor. If you found the drip point in the attic, a bucket or a plastic sheet directing water into one can stop it from soaking through to the ceiling below.
- Dry things out. Run fans or a dehumidifier in affected rooms, as long as the area is electrically safe, and pull up wet rugs so moisture doesn’t linger and lead to mold.
When our crew arrives for an emergency, we secure the area and install professional-grade tarps, sealants or leak barriers to stop active water flow until a full, lasting repair can be completed.
Step 4: Is It an Emergency, or Can It Wait?
Not every leak needs someone on your roof tonight, but some absolutely do. Use this as a quick guide.
Call for emergency help now if:
- Water is coming in steadily, or in more than one spot
- Water is near wiring, light fixtures or your electrical panel
- A ceiling is sagging, cracking or bulging
- A storm has torn off shingles or roofing, or a tree limb has come down on the roof
- More heavy rain or snow is in the forecast
It can usually wait for a scheduled visit if:
- You’ve noticed an old, dry stain that isn’t growing
- There’s a slow drip during heavy rain only, and it’s safely contained
- You’ve spotted a little dampness in the attic but no water reaching living spaces
Even a “can wait” leak shouldn’t wait long. Water that gets into the roof deck, insulation and framing keeps doing damage out of sight, and a small repair today is far easier than rotted wood and mold later. If you’re not sure which category you’re in, call us and we’ll help you decide. Union Roofing offers 24/7 emergency roof repair, and most emergencies receive same-day service, often within just a few hours depending on weather and traffic.
Step 5: What Professional Leak Repair Includes
A proper leak repair isn’t just a dab of sealant over the wet spot. Here’s what to expect from a professional visit:
- Stop the water. If the leak is active, the first priority is securing the roof with tarps, sealants or temporary barriers so no more water gets in.
- Find the real cause. A thorough inspection traces the leak to its source, whether that’s failed flashing, missing or damaged shingles, a cracked membrane, a worn seal around a vent, or storm damage. Our free emergency inspections include photos, notes and a repair plan.
- Explain your options. You should get a clear explanation of what’s wrong and what it will take to fix, including whether a targeted repair will do the job or the roof is near the end of its life.
- Make a lasting repair. The damaged materials are replaced or resealed properly so the leak is fixed for good, not just patched until the next storm.
- Document it for insurance if needed. If the leak was caused by a storm, we document the damage and can coordinate with your insurance provider.
How much does it cost to fix a roof leak?
The honest answer is that it depends on the extent of the damage. A few things drive the price of a leak repair:
- What failed. Resealing flashing around a vent is a very different job from replacing a section of damaged decking.
- How long water has been getting in. A fresh leak caught early usually means less hidden damage to wood and insulation.
- Your roof type and access. Shingle, slate, flat rubber and other systems all need different materials and methods, and tight rowhome access can add work.
- Whether it’s an emergency call. Stopping an active leak in a storm involves more than a scheduled daytime repair.
Rather than guessing, get a real answer for your roof. We provide free estimates with no pressure to commit, and financing plans are available if a bigger repair is needed. You can learn more about our roof repair services in Philadelphia, or if storms are the culprit, read our storm damage roof repair guide.
Roof Leak FAQs
Can I fix a roof leak from the inside?
You can manage a leak from the inside by containing the water, protecting the attic floor and drying things out, but you can’t truly fix it from inside. The water is getting in through the roof covering or flashing, so a lasting repair has to be made on the roof itself. Treat any inside measures as temporary until a professional can get up there safely.
Should I go on the roof to put a tarp down?
No. Wet or storm-damaged roofs are slippery and can be structurally weakened, and falls are a serious risk. Leave tarping to a roofing crew with proper safety equipment.
Will homeowners insurance cover my roof leak?
It depends on your policy and on what caused the leak. Sudden damage from a specific event, like a windstorm or a fallen branch, is treated differently from slow wear and tear. Take photos, note the date and check with your insurer. If storm damage is involved, we’ll document everything and can coordinate with your insurance provider.
Roof Leaking Right Now? We’re Here 24/7
For more than 40 years, homeowners across Philadelphia, South Jersey, Bucks County and the surrounding areas have trusted Union Roofing. We’re a family-run, fully licensed and insured, GAF-certified company, and when your roof is leaking we’ll respond quickly to inspect, tarp and secure your home. Call us any time at (215) 464-6425 or request your free inspection online.
