CF83's Local Heritage Specialists
High-resolution drone audits for mountain-shadow, riverside & heritage properties.
1. Get Free Quote
Submit the form. We are based locally in CF83, so residents pay Zero Travel Costs.
2. Arrive & Pay
Accept the quote to book. To prevent fraud, payment is only taken upon arrival once flight safety is confirmed.
3. The 20-Min Scan
We use high-stability drones to scan complex heritage roofs. Ideal for shaded properties in Machen or riverside access in Draethen.
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 "Micro-Climate" Guarantee
The Machen micro-climate can be unpredictable. If we arrive and cannot fly due to sudden weather changes or low cloud cover from the mountain, you do not pay a penny until we reschedule .
*Disclaimer: Rescheduled visits are billed at the original quoted rate.
Heritage-Preserving Inspections.
Why risk scaffolding damage to historic fabric when you can inspect from the air?
Installing scaffolding around delicate heritage cottages in Machen or Draethen can pose risks to the property itself.
Our drone survey provides a safer, non-invasive alternative:
- ✅ Evidence for Insurance: Validation for storm damage claims with 4K photos.
- ✅ Conservation Compliance: Non-destructive inspection reports for heritage authorities.
- ✅ Trace and Access: Find the exact entry point of a leak in minutes.
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 whether your roof is perfect or needs repair.
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 scaffolding access just for an estimate.
CalonTerra: A small fee for the truth. Only pay a tradesman to fix the specific damage you can see.
Buying or Selling in CF83?
"The survey flagged a potential roof issue."
Banks often demand a "Specialist Roof Report" before releasing funds on heritage properties. Standard surveys often can't see high, complex roofs properly.
The Solution: We provide the high-level evidence your lender requires to lift the retention.
Insurance Claims & Heritage Weather
If you are claiming for "Storm Event" damage on a heritage property, your insurer will demand proof that the damage is recent and not just "wear and tear" accelerated by the local micro-climate.
- ✅ HD Evidence: 4K photos of fresh damage.
- ✅ Date-Stamped Data: Proof for your claim.
- ✅ Independent Validation: Unbiased reports.
Typical Defects We Expose
Damaged / Slipped Tiles
Identify slipped or missing slates causing water ingress. Critical for Trace and Access on heritage properties.
Chimney Stack Pointing
Check for lead flashing issues and cracked lime mortar joints common in CF83's heritage builds.
Blocked Guttering Check
Spot limestone dust accumulation and vegetation growth from above.
Fascia / Soffit Issues
Identify water damage and "Riverside Rot" on wooden fascia boards.
CF83 Housing Intelligence
Our drones are calibrated to spot specific defects common to the Machen/Draethen area:
- Mountain Shadow Micro-Climate: Identifying persistent moisture, moss growth, and lichen loading caused by reduced sunlight.
- Limestone Dust Accumulation: Detecting siltation in gutters and valleys from the local geology.
- Heritage Fabric Deterioration: Checking for lime mortar erosion and stone degradation on period cottages.
- Riverside Drainage: Inspecting gutter slopes and drainage paths for "Riverside Rot" prevention.
Machen & Draethen Pricing
Base Rate (Zero Travel Cost for CF83 Postcodes).
Basic Check
From £145*
"Is my chimney okay?"
- • 15 Minute Flight
- • Raw Images Provided
- • Single issue check
Full Condition Report
From £265*
Most Popular.
- • Full Roof & Chimney Scan
- • PDF Condition Report
- • Defect Highlighting
- • For Standard Heritage Cottage
*Plus any applicable conservation area surcharges
Estate Agents
Volume
Property Management.
- • Marketing Photos
- • Roof Reports
- • Pre-Purchase Surveys
*Pricing based on standard residential properties. Heritage building surcharges may apply.
Pilot Certification & Insurance
Your assurance for a safe, compliant, and discreet survey.
CAA Operational Authorisation
Highest standard of UK CAA certification (GVC & A2 CofC) for complex operations.
- ✅ Fully Insured: £5M Public Liability.
- ✅ Discreet Operation: Quiet, small drones suitable for residential areas.
- ✅ GDPR Compliant: Secure data management.
CF83 Roof Inspections
Serving Machen, Draethen, Graig-y-Rhacca & The Western Valleys. Independent assessments you can trust.
- 📍 Machen Village
- 📍 Draethen
- 📍 Graig-y-Rhacca
- 📍 Trealaw
- 📍 Blackmill
- 📍 Rassau
Common Problems We Identify
Book Your CF83 Survey
Select your package below.