A Practical Guide for Comfort, Insect Control and Heat Awareness
Many owners assume rugs are only for winter. In reality, summer rugging plays a critical role in protecting horses from insects, sun exposure and skin irritation. However, incorrect summer rug use can lead to overheating, sweating and coat damage.
Summer rugging is about protection — not insulation.
This guide explains when summer rugs are necessary, how to choose correctly, and how to balance fly protection with temperature regulation.
Why Summer Rugging Exists
Summer rugs are primarily used to protect against:
- Flies
- Midges
- Horseflies
- UV exposure
- Dust irritation
For some horses — particularly those prone to sweet itch — summer rugging becomes essential for welfare.
However, not every horse requires a summer rug.
Observation and individual need matter.
1. Understanding Fly Rugs
Fly rugs are:
- Lightweight
- Mesh-based
- Breathable
- Non-insulated
They are designed to create a physical barrier between insects and skin.
A well-fitted fly rug:
- Reduces biting irritation
- Minimises tail rubbing
- Decreases stress behaviours
- Protects coat condition
2. When Does a Horse Need a Fly Rug?
Fly rugs are especially useful for horses that:
- Rub mane and tail excessively
- Develop sweet itch
- Become agitated by insects
- Live in midge-heavy environments
- Have sensitive or thin skin
Some horses tolerate insects well and may not require rugging.
Avoid rugging purely out of habit.
3. Sweet Itch and Specialist Rugs
Sweet itch is an allergic reaction to midge saliva.
In these cases:
- Full-coverage rugs are essential
- Belly flaps provide crucial protection
- Neck covers reduce mane damage
- Early season use is critical
Prevention works far better than late intervention.
Once severe rubbing begins, skin damage escalates quickly.
4. Heat Considerations
Summer rugs can trap heat if poorly designed or used incorrectly.
Watch for:
- Sweating under the rug
- Damp coat
- Lethargy
- Increased drinking
- Reduced grazing
Even breathable mesh slightly reduces airflow.
On very hot days (around 25°C+), consider:
- Removing rugs during peak heat
- Turning out overnight instead
- Providing ample shade
- Using fly masks or shelters
Comfort always overrides routine.
5. UV Protection for Light-Coloured Horses
Horses with:
- Pink skin
- White markings
- Light coats
May develop sunburn.
UV-protective rugs help prevent:
- Skin peeling
- Painful irritation
- Long-term skin sensitivity
Especially useful for horses with exposed noses or clipped areas.
6. Fly Masks and Additional Protection
Fly masks protect:
- Eyes
- Ears
- Sensitive facial skin
Choose masks that:
- Do not press on the eyes
- Sit securely without slipping
- Allow clear vision
- Avoid rubbing at cheeks or poll
Check daily for debris or insects trapped inside.
7. Ensuring Correct Rug Fit in Summer
Poor fit can cause:
- Shoulder rubs
- Mane thinning
- Heat build-up
- Slipping or twisting
Check that:
- Chest closures sit flat
- Shoulder movement is unrestricted
- Belly flap lies comfortably
- Neck cover does not press or pull
Fit should be reassessed regularly.
8. Balancing Turnout and Stable Time
Midges are most active at:
- Dawn
- Dusk
- Still, humid evenings
Management options include:
- Stabling during peak insect times
- Using fans to reduce insect landing
- Applying repellents where needed
Layered management is often most effective.
9. Fly Spray vs Fly Rug
Fly sprays:
- Offer short-term relief
- Require frequent reapplication
- May not suit sensitive skin
Fly rugs:
- Provide continuous barrier protection
- Reduce chemical exposure
- Offer consistent coverage
Many horses benefit from a combination approach.
10. Monitoring Skin Under Summer Rugs
Even lightweight rugs require daily checks.
Look for:
- Dampness or sweating
- Heat build-up
- Skin irritation
- Hair breakage
- Early rubs
Fly rugs can trap dust — regular washing maintains hygiene.
Signs Your Horse May Be Overheating
Watch for:
- Excess sweating
- Rapid breathing
- Lethargy
- Reluctance to move
- Reduced appetite
Remove the rug and reassess if signs appear.
Common Summer Rugging Mistakes
Avoid:
- Leaving rugs on during heatwaves
- Ignoring sweating
- Failing to clean rugs regularly
- Using rugs when insects are minimal
- Starting sweet itch protection too late
- Assuming all horses need rugs
Summer rugging is preventative — not decorative.
The Core Principle
Summer rugs are:
- Protective barriers
- Insect management tools
- UV shields
They are not insulation.
Use them when needed. Remove them when unnecessary. Prioritise airflow, comfort and daily observation.
Successful summer rugging is responsive — not automatic.
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Knowledge Hub: https://jsm-equestrian-supplies.co.uk/knowledge-hub/
Category: https://jsm-equestrian-supplies.co.uk/category/rugging-seasonal/
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