- Applications
- Extensions,
- Garages,
- Dormers,
- Porches
- Balconies
- Bay Windows
- Summer Houses
- Stairs
- Green Roofs
- Non Slip Walkways
- Architechtural Projects
- Bespoke Detail
- Simulated Lead Finishing
GRP Materials Calculator
Please note Hardener Quantities will vary depending on weather conditions. Please see our “Estimating quantities guide” below.
Data Sheets
Material Safety Data Sheets
Installation Guides
Full Range of Trims
Estimating Quantities Guide
Sentinel Fire Rating Certificate
Sentinel GRP Installation Guide
Our Sentinel GRP installation guide is a comprehensive step by step booklet including our full range of trims and an easy to follow estimating materials guide.
