Page Contents
Quick Answers
Birds sitting on the edge of roofs can be a nuisance, but there are some effective deterrents to humanely keep them away. Here are some quick answers to common questions:
What is the best way to keep birds off roof edges?
Installing bird spikes, coils, netting, or wires along the roof edge. These make it uncomfortable for birds to land and sit.
Are there any chemicals or sprays that will deter birds?
No sprays or chemicals are recommended, as they can harm the birds and the environment. Physical barriers are best.
Will noise makers or ultrasonic devices effectively scare birds away?
These may work for a short time, but birds quickly become accustomed to the sounds. Physical deterrents work better long-term.
Is there a humane way to keep birds off roofs?
Yes, physical barriers that make roofs an unattractive perch won’t harm birds. Proper installation ensures both bird and human safety.
Why Do Birds Perch on Roof Edges?
Birds sit on roof edges for a few main reasons:
- Roof edges provide an elevated perch to survey the area for food and keep watch for predators.
- Gutters and overhangs provide shelter and shade from weather and bright sun.
- Eaves and ridges allow flat surfaces for nesting and roosting.
Common problematic birds include pigeons, seagulls, crows, grackles, and starlings. Pigeons in particular favor roof edges for perching, roosting, and nesting. Their droppings can cause property damage over time. That’s why many property owners wish to discourage birds from treating roofs as ideal hangouts.
Bird Deterrents for Roof Edges
When it comes to keeping birds away from roofs, physical barriers work best for humane and effective solutions. Here are some top options:
Bird Spikes
Plastic or stainless steel spikes can be installed along roof edges, peaks, eaves, ledges, and gutters. Angled spikes or “prongs” are spaced close enough so birds cannot fit between them or get a grip on the surface. They discourage landing while allowing water runoff.
Bird Spikes Pros:
- Effective deterrent for all types of birds
- Low maintenance once properly installed
- Durable materials last many years
- Allow air circulation and water runoff
Bird Spikes Cons:
- Can be time consuming to install
- Require appropriate adhesive or anchors for roof type
- May not be aesthetically pleasing to some
- Careful installation required for best results
Bird Wire
Stainless steel wire or nylon monofilament lines can be installed above roof edges and spaced closely together to block birds from landing. The thin wires are harder for birds to see and sit on. They can be attached with eye hooks to various roof styles.
Bird Wires Pros:
- Very difficult for birds to land on
- Nearly invisible deterrent
- Lightweight and easier to install than spikes
- Low profile and less noticeable from ground
Bird Wires Cons:
- Require anchoring points on roof edges
- Can flap and make noise in windy conditions
- May sag over time and require tightening
- Less durable than spikes in extreme weather
Bird Netting
Heavy duty plastic or nylon netting can be installed above roof edges, anchored to the eaves, fascia or rooftop. Proper installation with ample clearance ensures birds cannot get tangled while allowing airflow. Sturdy netting holds up to weather and bird pecks.
Bird Netting Pros:
- Effective physical roof edge barrier
- Customizable shape and size for coverage area
- Can handle weather exposure when installed correctly
- Good for areas where visual deterrents are undesirable
Bird Netting Cons:
- More difficult and complex installation than spikes or wires
- Debris and leaves can accumulate if not cleaned periodically
- May sag or require replacement over time
- Larger areas require more netting and anchoring points
Bird Coils
Spring steel coils installed along roof edges unfurl when birds try to land on them, preventing getting a foothold. Coils attach to the roof with adhesive and can be looped around curved eaves and peaks. They are less visible than large spikes.
Bird Coil Pros:
- Very effective at denying bird perches
- Lower profile than spike deterrents
- Mold to fit curved roof architecture well
- Durable steel holds up to weather
Bird Coil Cons:
- Can be time consuming to size, cut, and install properly
- Foil finish may degrade in outdoor elements
- Not recommended for metal seam roofs
- Can collect debris and require cleaning
Tips for Deterring Birds from Roof Edges
Here are some useful tips for maximizing the effectiveness of humane bird deterrents on roof edges:
- Identify all of the areas birds are perching, roosting, and nesting on the roof edge.
- Apply deterrents to all possible perching surfaces, including peaks, slopes, eaves, fascia, ledges, and gutters.
- For bird spikes and coils, leave no more than 3-4 inch gaps between deterrents.
- For wires or netting, ensure ample overhang past roof edges, at least 3 feet.
- Use appropriate adhesive or anchors for the roofing material (tile, metal, shingle, etc.)
- Inspect and maintain deterrents regularly to check for any detachment or damage.
- To limit re-perching, trim back nearby trees or shrubs birds are using to access the roof.
When to Call a Professional
While it’s possible to DIY simple bird deterrents, sometimes calling a professional installer is best:
- For large commercial or industrial buildings
- If accessing edges and slopes is dangerous
- For roof types requiring special anchors or adhesion methods
- If related damage like mold or structural repairs are needed
- For custom metal fabrication of wire deterrents
- If birds continue to perch after attempted deterrents
Professionals like roofers or wildlife control experts can assess bird issues, recommend tailored solutions for the exact roof architecture, and properly install more complex or heavy duty deterrent systems if needed.
Conclusion
Discouraging birds from roosting on roofs almost always requires physical barriers like bird spikes, wires, netting or coils. When compared to risks of birds persisting or using chemical deterrents, installing humane devices provides the most effective long-term results. With some knowledge of the main options and how to apply them, homeowners can tackle many basic bird problems themselves in a safe and animal-friendly way. But for big or complex jobs, or if initial attempts fail, seeking professional installation is advised.