How to Stop a Tarp From Flapping in the Wind
A tarp that starts flapping in the wind is more than just annoying. Every movement puts additional stress on the tarp, its grommets and attachment points. Over time, this repeated movement can stretch the material, damage the grommets and eventually cause the tarp to tear.
The solution is usually simple: reduce the amount of loose tarp that the wind can move.
But tightening the existing edge grommets is not always enough. Depending on the shape of the object being covered, you may need to create additional attachment points exactly where the tarp needs support.
Why Does a Tarp Flap in the Wind?
Wind flapping usually occurs when there is a loose section between the tarp and the object or frame underneath it.
Wind gets underneath the tarp and lifts the loose material. As the wind pressure changes, the tarp repeatedly moves up and down.
The larger the unsupported area, the more movement you can get.
This is particularly common with:
- Boat covers
- Winter storage tarps
- Machinery covers
- Trailer covers
- Construction tarps
- Camping tarps
- Garden furniture covers
Irregular shapes, such as boats and machinery, are particularly difficult because standard tarp grommets are not always positioned where tension is actually needed.
Start With the Existing Tarp Grommets
Before adding anything to the tarp, check all existing attachment points.
Make sure the tarp is evenly tensioned and that no ropes, bungees or straps have become loose. One loose corner can allow a surprisingly large section of tarp to start moving.
The goal is not to pull the tarp as tightly as possible. Good tarp tension should be firm and evenly distributed.
Overtightening individual grommets can actually create another problem by concentrating too much load around one eyelet.
Find the Loose Areas
Once the existing attachments are properly tensioned, look for sections of tarp that can still move.
A simple way to identify them is to push the tarp gently toward the supporting structure underneath.
If the tarp can move a significant distance before reaching a pipe, ridge pole or frame, that area may benefit from an additional attachment point.
This is often the key to stopping persistent tarp flapping.
Add an Attachment Point Where You Actually Need It
Traditional tarp grommets are normally positioned around the edges at fixed intervals.
Unfortunately, the object underneath rarely matches those positions perfectly.
Instead of applying more tension to an existing grommet several feet away, an additional attachment point can be placed directly over a strong part of the supporting structure.
A self-adhesive tarp attachment patch makes it possible to create such a point without sewing or installing a traditional metal grommet.
The Hippo Marine Tarp Attachment Point 1260 combines a heavy-duty adhesive reinforcement patch with a reusable rubber tie. The patch can be positioned where additional support is needed, allowing the tarp to be pulled toward the frame underneath.
This reduces the loose surface area that the wind can lift.
Where Should an Extra Tarp Attachment Point Be Placed?
Position is important.
Whenever possible, place the attachment point directly above or close to a strong part of the supporting structure, such as:
- A tarp support pole
- Ridge pole
- Frame tube
- Railing
- Other solid support
This allows the tarp to be pulled toward the support rather than sideways across the fabric.
Sideways tension should be avoided because it concentrates the load on one side of the attachment point.
How to Install an Adhesive Tarp Attachment Point
The installation itself is straightforward.
First, decide exactly where additional tension is needed. Make sure the tarp is sitting in approximately its normal position before choosing the location.
Clean and dry the surface thoroughly. Dirt, moisture, oil or other contamination can reduce adhesion.
Apply the reinforcement patch and press it firmly onto the tarp.
Once installed, make a hole through the reinforced area and insert the rubber tie. The tie can then be attached to the supporting structure underneath.
No sewing is required.
The attachment should be tensioned enough to keep the tarp close to the support, but not so tightly that excessive stress is placed on the tarp or frame.
Don't Automatically Reuse Last Year's Position
This is particularly important for seasonal boat covers and winter tarps.
Even if you use the same tarp and frame every year, they may not sit in exactly the same position.
A previously installed attachment point can be reused if it still lines up correctly with the support underneath.
If it doesn't, don't pull the old attachment point sideways simply because it is already there.
Creating a new attachment point in the correct position is generally better than putting unnecessary sideways stress on the tarp.
Reinforce Existing Grommets Too
Extra attachment points solve one problem, but existing tarp grommets should also be checked regularly.
If the material immediately around a grommet begins to stretch or show signs of wear, reinforcing the area before it tears can considerably extend the life of the tarp.
This is where grommet reinforcement tape, such as Hippo Marine 1220, serves a different purpose.
The two solutions complement each other:
Grommet reinforcement strengthens an existing attachment point.
An additional tarp attachment point creates support where an attachment point is missing.
Less Movement Means Less Wear
You cannot eliminate every movement from an outdoor tarp, particularly during strong winds.
But reducing large, loose areas can make a significant difference.
A well-supported tarp distributes loads across more attachment points and reduces the repeated snapping and pulling that eventually damages the fabric.
The basic principle is simple:
Support the tarp where it needs support – rather than trying to solve every loose area by pulling harder on the existing grommets.
Frequently Asked Questions
How do I stop a tarp from flapping in the wind?
Start by evenly tensioning the existing attachment points. If sections remain loose, add support or an additional attachment point where the tarp can be pulled closer to the frame underneath.
Why does my tarp still flap when all the grommets are tight?
The existing grommets may not be positioned where the tarp actually needs support. This is common when covering irregular shapes such as boats, trailers or machinery.
Can I add an attachment point to a tarp without installing a metal grommet?
Yes. A self-adhesive reinforcement patch can create an additional tie-down point without sewing or installing a traditional metal grommet.
Where should I add an extra tarp attachment point?
Ideally, place it above a strong part of the supporting structure such as a pole, tube or ridge. This allows the tarp to be pulled toward the support rather than sideways.
Should a tarp be pulled as tight as possible?
No. The tarp should be firm and evenly tensioned. Excessive tension can concentrate loads around individual grommets or attachment points and damage the material.
Can extra attachment points help prevent tarp grommets from tearing?
Yes. Reducing loose areas and distributing the load across additional attachment points can reduce the stress placed on existing grommets.
