The short answer
Prepare the Roof and Tarp
Before you climb up, clear any loose debris from the roof area. Wet leaves, branches, or shingles can tear the tarp or make the surface slippery. Use a broom or gloved hands to sweep the area gently, and check for exposed nails or sharp edges that could puncture the tarp.
Choose a tarp that is larger than the damaged section, with at least two feet of overhang on each side. Heavy-duty polyethylene tarps with reinforced grommets are a good choice. Lay the tarp flat on the ground first to inspect for holes, and have a second tarp ready in case the first one fails.
Secure the Tarp Properly
Position the tarp so the highest edge is under the roof shingles or tiles, not over them. This stops water from running underneath. For a flat roof, weigh the tarp down with sandbags or heavy boards, but for a sloped roof, use rope or bungee cords to tie the grommets to sturdy points like nails, vents, or the roof ridge.
Run the rope across the roof, not just along the edges, to hold the tarp down against strong winds. Cross the ropes in an X pattern over the middle of the tarp. Check that the tarp is taut, with no sagging pockets where water could pool. If the damage is near a chimney or skylight, wrap the tarp around the base and secure it separately.
- Use a tarp at least 6 mil thick for durability
- Anchor ropes to fixed points, not loose shingles
- Overlap two tarps by at least 12 inches if needed
- Tie knots away from the roof edge to avoid slipping
- Add extra rope across the middle for high winds
- Check the tarp after heavy rain or wind
Stay Safe While Working
Never go on a roof during lightning, heavy rain, or high winds. Wait for a break in the storm, and always have a second person on the ground to hold the ladder and pass tools. Wear shoes with good grip, and avoid walking on wet or mossy areas.
If the roof is steep, more than one story high, or if you feel unsteady, do not attempt the job yourself. A fall can cause serious injury. Instead, focus on reducing water inside the home, such as placing buckets under leaks, and then contact local water damage pros who have the right safety gear.
Temporary Fixes for a Lasting Seal
A tarp is a temporary solution, not a permanent repair. While the tarp is in place, check it regularly, especially after storms. If you notice water still getting in, adjust the tarp or add more anchors. You can also apply roofing cement or sealant around the tarp edges to improve the seal, but only if the surface is dry.
Keep in mind that a tarp will not stop all water if the roof structure is damaged. Water can travel along rafters or under the tarp. For a more reliable fix, have a roofing professional inspect the damage and perform a proper repair. Meanwhile, the tarp buys you time to plan the next steps.
When to Call the Pros
If the hole is large, the roof is sagging, or you see water stains on ceilings and walls, the damage may be more than a tarp can handle. In those cases, the pros can assess the roof and provide a more secure temporary cover. They can also check for underlying issues like rot or structural weakness.
After the storm passes, the pros can handle the full repair, from removing the damaged shingles to replacing the roof deck. They can also dry out the attic and walls if water has already entered. For now, focus on staying safe and keeping the tarp as secure as possible while you wait for professional help.
Water damage does not wait
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (469) 698-4610Frequently asked questions
How long can a tarp stay on a roof?
A tarp can stay on for a few weeks, but it depends on the weather and the tarp quality. Check it after every heavy rain or windstorm. If the tarp tears or shifts, replace it quickly. A tarp is not a permanent fix, so plan for a real repair soon.
Can I tarp a roof in the rain?
You can try, but it is risky. Wet surfaces are slippery, and rain makes it hard to secure the tarp properly. If the rain is light and the roof is not too steep, you might manage. Otherwise, wait for a dry moment or use a bucket indoors until you can safely work.
What if the tarp blows off during a storm?
If the tarp blows off, do not go out during the storm. Wait until it is safe, then retrieve the tarp and re-secure it. Use more rope and anchor points this time. If the tarp is damaged, use a new one. If the roof damage is severe, call the pros.