What Damage Can Stones Cause?
Stone damage is the most common and most preventable form of caravan wear in Australia. When the tow vehicle's rear tyres hit loose stones at 80–110 km/h, those stones are launched directly at the caravan's front. Here is what they hit and what it costs to fix.
Front Panel Damage
Dents, chips, and paint damage that worsen over time. Repainting a caravan front panel costs $800–$1,500 depending on the panel size and finish. Left untreated, exposed metal corrodes — turning a cosmetic issue into a structural one.
Gas Bottle and Regulator Damage
A-frame mounted gas bottles are directly in the stone line. A cracked valve or damaged regulator is a safety hazard and costs $150–$400 to replace including labour. In remote areas, this can end a trip entirely.
Water Line and Tank Damage
Front-mounted water tanks and exposed plumbing lines are vulnerable. A punctured water line means no water at camp. Repairs run $200–$600, and in remote areas you may not find a repairer for days.
Electrical Connection Damage
Stone impacts crack connector housings, strip insulation, and corrode terminals. Failed brake lights are a roadworthy defect and a safety risk. Electrical fault diagnosis and repair costs $200–$800.
Front Window Damage
A stone chip in a front-facing window often means full replacement. Caravan window replacements typically cost $500–$1,200 and may require custom ordering — leaving you without a window for weeks.
Key point: Stone damage is cumulative. Every trip without protection adds micro-dents and stress. By the time damage is visible, components may already be compromised.
When You Definitely Need a Stone Guard
You need a stone guard if any of the following apply to your towing situation.
- ✓You tow on highways at 80 km/h or above — stones are thrown with force at these speeds
- ✓You drive on unsealed, gravel, or dirt roads — even occasionally
- ✓You tour regional Australia where road surfaces vary without warning
- ✓Your caravan has front-mounted gas bottles on the A-frame
- ✓You have exposed water lines, electrical connections, or plumbing on the front
- ✓You tow behind a ute, SUV, or 4WD with aggressive tyre tread — these throw more stones
- ✓You plan to sell or trade in your caravan — stone damage reduces resale value significantly
- ✓You tow in convoy or behind trucks on regional roads — double the stone exposure
If even one of these applies, a stone guard is a worthwhile investment. If three or more apply, it is essential.
When You Might Not Need One
There are a few narrow scenarios where a stone guard may not be necessary.
- —You only tow at low speeds (under 60 km/h) on sealed suburban streets
- —Your caravan never leaves a sealed caravan park or storage facility
- —You have a pop-top or camper trailer with no exposed front-mounted components
- —The caravan is a write-off you plan to dispose of soon
Honest take:If you're reading this guide, you almost certainly need a stone guard. The scenarios above are rare — most Australian caravanners tow on highways and regional roads where stone damage is a near-certainty over time.
How Much Does a Stone Guard Cost vs Repair Costs?
A stone guard is one of the few caravan accessories that genuinely pays for itself. Here is how the numbers stack up.
| Item | Cost Range (AUD) | Notes |
|---|---|---|
| Stone Guard Purchase | ||
| Budget stone guard (e.g. Coast Stone Shield) | $80–$150 | Basic protection, standard steel |
| Mid-range guard (e.g. D-Flector) | $200–$350 | High-strength steel, no-drill install, 8.6/10 rated |
| Premium guard (e.g. Stone Stomper) | $350–$500 | Maximum coverage, daily connect/disconnect |
| Stone Damage Repairs | ||
| Front panel repaint | $800–$1,500 | Depends on panel size and paint match |
| Gas regulator replacement | $150–$400 | Including labour; safety-critical |
| Water line repair | $200–$600 | May require custom parts in remote areas |
| Electrical fault diagnosis and repair | $200–$800 | Brake light failure is a roadworthy defect |
| Front window replacement | $500–$1,200 | Often custom order; weeks lead time |
| Total potential repair bill | $800–$3,500+ | Per incident — damage often affects multiple components |
Even a budget stone guard at $100 pays for itself after preventing one minor repair. A mid-range guard like the D-Flector at around $250–$350 is a fraction of any single repair on this list.
Which Stone Guard Should You Buy?
The right guard depends on how and where you tow. For most Australian caravanners, a permanent-mount A-frame mesh guard is the best balance of protection, convenience, and value.
Our Top Pick: D-Flector Stone Guard (8.6/10)
The D-Flector scored 8.6 out of 10 in our expert testing — the highest rating we have given any stone guard. It is Australian Made, uses high-strength performance steel, installs in 10 minutes with no drilling, and permanently protects the A-frame, gas bottles, water tanks, and electrical connections.
Not sure which type suits you? Our buying guide covers the four types of stone guards, key features to compare, and budget recommendations. For a quick side-by-side overview, see the comparison chart.
Frequently Asked Questions
Do I need a stone guard if I only tow on highways?▼
Yes. At highway speeds (80-110 km/h), even sealed roads have loose stones, road debris, and gravel patches — particularly near roadworks, merge zones, and truck stops. A single stone at speed can crack a gas regulator or dent a front panel. Highway tourers may not need a premium guard, but basic protection is strongly recommended.
How much does stone damage repair cost on a caravan?▼
Typical stone damage repairs in Australia cost between $800 and $3,500. Front panel repainting runs $800-$1,500, gas regulator replacement is $150-$400 including labour, water line repairs cost $200-$600, and a cracked front window replacement can exceed $1,000. A quality stone guard costs $150-$500 — less than a single repair.
Can mud flaps on my tow vehicle replace a stone guard?▼
Mud flaps reduce the volume of stones thrown rearward but do not eliminate them. They also cannot protect against stones thrown by passing vehicles or kicked up from the road surface itself. For serious touring, a dedicated caravan stone guard provides far more reliable protection than tow vehicle mud flaps alone.
What is the best stone guard for Australian conditions?▼
Based on our expert testing of 6 stone guards, the D-Flector Stone Guard scored 8.6/10 — the highest rating we have given. It uses high-strength performance steel, installs in 10 minutes without drilling, and protects the A-frame, gas bottles, water tanks, and electrical connections in one unit. It is Australian Made and built for local conditions.
Do stone guards work on off-road and gravel roads?▼
Stone guards are most critical on gravel and unsealed roads where stone spray is heaviest. A quality mesh guard deflects stones away from the caravan front, protecting vulnerable components. For frequent off-road touring, choose a guard with rip-stop mesh and a corrosion-resistant frame — budget guards may not withstand sustained gravel bombardment.
Related Resources
Buying Guide
How to choose the right stone guard for your caravan and budget.
Comparison Chart
Side-by-side scores for all 6 stone guards across 8 criteria.
Installation Guide
Step-by-step instructions for fitting your stone guard.
Stone Guard FAQ
20+ questions about caravan stone guards answered by experts.