The High-Altitude Stronghold
From Tredegar town to the exposed moors of Trefil.
1. Wind Assessment
We check real-time wind shear. Trefil’s exposure demands Enterprise-grade stability.
2. Arrive & Pay
Accept the quote to book. To prevent fraud, payment is only taken upon arrival once flight safety is confirmed.
3. The Storm-Proof Scan
We use DJI Enterprise Matrice 3D to scan every slate in high-wind conditions. Ideal for exposed moorland properties.
4. Receive Data Package
You receive a PDF Condition Report and a link to every raw image & 4K video to show your insurer or roofer.
The "Storm-Proof" Guarantee
Trefil’s wind speeds often exceed 35 mph. If we cannot safely fly due to wind, you do not pay a penny.
*Disclaimer: Rescheduled visits are billed at the original quoted rate.
STORM-PROOF SURVEYS
When hobbyists abort, we operate.
Trefil sits at 1,200ft with constant wind shear. Consumer drones lose stability and drift into valleys.
We deploy DJI Enterprise Matrice 3D with advanced wind compensation algorithms, enabling stable flight where others cannot:
- ✅ High-Wind Certified: Operates safely in 45+ mph gusts.
- ✅ Thermal Stability: No drift from moorland updrafts.
- ✅ CAA GVC Authorised: Legally compliant for high-risk zones.
Don't Ask a Roofer if You Need a New Roof
We are Independent Data Collectors. We don't fix roofs, so we have no incentive to "find" extra work.
1. The Incentive
The Roofer: Makes money by finding defects, selling materials, and increasing the job scope.
CalonTerra: We charge a fixed flat fee. Our price is the same regardless of what we find.
2. The Evidence
The Roofer: Often relies on verbal opinions or blurry ground photos.
CalonTerra: A downloadable Visual Condition Report with zoomed-in 4K evidence.
3. The Cost
The Roofer: You may pay for access (ladders) just for an estimate.
CalonTerra: A small fee for the truth. Only pay a tradesman to fix the damage you can see.
Owning a Moorland Home in Trefil?
"The drone company couldn't fly — too windy."
Standard operators use consumer drones that fail in high wind. Our Enterprise system is built for Wales’ most exposed properties.
The Solution: Aerial evidence when others are grounded.
Insurance & Storm Damage
Insurers demand proof of *recent* storm damage on high-altitude properties.
- ✅ HD Evidence: 4K photos of fresh tile breaks.
- ✅ Date-Stamped Data: Proof for your claim.
- ✅ Independent Validation: Unbiased reports.
Typical Defects We Expose
Wind-Lifted Slates
Identify slates peeled by gales. Critical for Trace and Access in exposed zones.
Chimney Stack Erosion
Check mortar pointing and chimney pots—failure points in high winds.
Vegetation Blockages
Moorland moss and grass clog gutters, causing overflow into eaves.
Timber Soffit Rot
Prolonged damp from driving rain in exposed locations.
Tredegar High-Altitude Intelligence
Our drones are calibrated to spot specific defects common to the moorland:
- Trefil Exposure: Wind-lifted slates on 1,200ft properties
- Sirhowy Terraces: Shared chimney party-wall disputes
- Pontsticill: Heritage stone tile delamination
- Rhymney Valley: Drainage failure on steep rear pitches
Tredegar Pricing
Includes high-wind surcharge (waived for NP22 postcodes).
Basic Check
£165*
"Is my chimney stable?"
- • 15 Minute Flight
- • Raw Images + Wind Report
*Standard rate £145 + £20 wind surcharge
Full Condition Report
£285*
Most Popular.
- • Full Roof & Chimney Scan
- • PDF Condition Report
- • Defect Highlighting
*Includes high-wind protocol
Heritage Stone Audit
From £345
Trefil & Pontsticill Heritage
- • Stone Tile Delamination
- • Conservation Officer Report
- • Party-Wall Documentation
Pilot Certification & Insurance
Your assurance for a safe, compliant, and discreet survey.
CAA Operational Authorisation
Highest standard of UK CAA certification (GVC & A2 CofC).
- ✅ Fully Insured: £5M Public Liability.
- ✅ High-Wind Certified: DJI Enterprise hardware for 45+ mph gusts
- ✅ GDPR Compliant: Data managed to strict ICO protocols.
NP22 High-Altitude Zones
Serving the most exposed housing in the UK.
- 📍 Tredegar Town
- 📍 Sirhowy Valley
- 📍 Trefil Moorland
- 📍 Pontsticill Reservoir
- 📍 Rhymney (Upper)
- 📍 Nantyglo Heights
High-Wind Materials
Book Your Tredegar Survey
Mention "Trefil" or "High-Wind" for priority scheduling.