CGL Surveys

Content rating
Everyone
5+
Downloads
Content rating
Everyone
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About this app

The RELINE Survey Tool is the survey app for CGL Systems Ltd. It is used by CGL surveyors and approved contractors to record gutter lining and roof surveys on site.

An account is required. Accounts are created in the app and approved by CGL Systems before they can be used.

WHAT IT DOES

Record a complete survey on site — measurements, specifications, condition and notes — and send it to CGL as a formatted PDF.

Photographs
Photograph the gutter run, the outlets and the site conditions. Each photograph is held against the section of the survey it belongs to.

Works without a signal
Surveys and photographs are saved on the device as you work, and upload by themselves once a connection returns. Nothing is lost on a roof with no coverage.

Weather for the site
A seven-day forecast for the site postcode showing wind speed and direction, rainfall and temperature, with CGL's own RAMS wind threshold marked so you know when conditions are unsafe to work in.

Customer signature
The customer signs on screen to confirm the survey details. Their signature is included in the PDF.

Your surveys
Everything you have submitted, with the PDF for each one.

Safety
The site safety notice and RAMS check are shown before each survey begins.

ABOUT CGL SYSTEMS

CGL Systems Ltd manufactures RELINE membrane-lined gutter systems, rainscreen cladding and liquid roofing systems from East Kilbride, Glasgow.
Gutter and roof surveys completed on site and sent straight to CGL Systems.
Updated on
24 Sept 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, Photos and videos and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

What's new

Corrected the app icon.
Content rating
Everyone
Learn more

App support

Phone number
+441355243021
About the developer
NIC AND ARI LTD.
robin@zostro.com
5 LA BELLE PLACE GLASGOW G3 7LH United Kingdom
+44 7515 876853