The Navigation & Engineering Hub
From Crumlin’s industrial heritage to Risca’s steep residential valleys.
1. Topographical Assessment
We assess slope angle and access risk. If it’s too steep for ladders, it’s perfect for drones.
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 stabilized drones to inspect extreme slopes safely. Ideal for A470 corridor 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 engineer.
The "Impossible Access" Guarantee
If your property has a slope steeper than 30 degrees or is adjacent to industrial infrastructure, ladders are unsafe. We provide the only viable inspection method. If we cannot fly due to terrain, you do not pay a penny.
*Disclaimer: Rescheduled visits are billed at the original quoted rate.
TAMING THE INCLINE
Drones are the only safe way.
Inspecting a roof in Crumlin often means working on a 45-degree valley slope. Ladders are unstable; scaffolding is prohibitively expensive.
Our drone survey eliminates all physical risk:
- ✅ Industrial Heritage Sites: Crumlin Navigation area mapping
- ✅ Valley-Side Safety: No personnel on steep slopes
- ✅ A470 Corridor Access: Rapid deployment for impossible sites
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 (scaffolding) just for an estimate.
CalonTerra: A small fee for the truth. Only pay a tradesman to fix the damage you can see.
Owning a Valley-Side Home in Crumlin?
"The roofer said it's too dangerous to inspect."
Steep slopes and limited rear access make traditional inspections unsafe or impossible.
The Solution: Aerial evidence without setting foot on your property.
Industrial & Heritage Audits
The Crumlin Navigation area demands non-intrusive inspection methods.
- ✅ Asbestos Roofing (Visual): Safe identification
- ✅ Structural Mapping: For aging engineering sites
- ✅ Thermal Option: Detect heat loss on converted units
Typical Defects We Expose
Steep-Pitch Tile Slippage
Identify slipped or missing slates on 40°+ roofs. Critical for Trace and Access.
Industrial Chimney Erosion
Check for lead flashing issues and cracked pointing on tall stacks.
Valley Gutter Blockages
Spot vegetation growth and sagging brackets from above.
Water Ingress on Slopes
Identify driving rain penetration on exposed eaves.
Crumlin Engineering Intelligence
Our drones are calibrated to spot specific defects common to the Western Valley:
- Crumlin Navigation: Industrial heritage mapping
- A470 Corridor: Rapid response for commercial sites
- Risca Slopes: Valley-side water ingress patterns
- Newbridge Estates: 1970s concrete tile audits
Crumlin Pricing
Base Rate (Zero Travel Cost for NP11 Postcodes).
Basic Check
£145*
"Is my roof stable?"
- • 15 Minute Flight
- • Raw Images Provided
- • Single issue check
*No travel fees for NP11
Full Condition Report
£265*
Most Popular.
- • Full Roof & Chimney Scan
- • PDF Condition Report
- • Defect Highlighting
- • For Standard 3-Bed House
*Zero travel cost for NP11 postcodes
Industrial Audit
From £395
Crumlin Navigation | Engineering Sites
- • Structural Mapping
- • Thermal Option (+£95)
- • Heritage Compliance
*No hidden travel fees for NP11 postcodes.
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.
- ✅ Discreet Operation: We use quiet, smaller drones.
- ✅ GDPR Compliant: Data managed to strict ICO protocols.
Crumlin Roof Inspections
Serving the Western Valley. We are independent roof surveyors. Because we don't sell repairs, we give you an honest assessment.
- 📍 Crumlin & Navigation Area
- 📍 Newbridge Estates
- 📍 Abercarn Steep Slopes
- 📍 Risca A470 Corridor
- 📍 Crosskeys
- 📍 Pontymister
Common Problems We Identify
Book Your Crumlin Survey
Select your package below.