Gutter Compatibility Guide
Use this guide to identify common UK rainwater profiles and check which gutter systems can be mixed before ordering.
Choosing the right gutter system and matching compatible fittings helps prevent leaks, delays and wasted parts. Start with the shape and size of the gutter, not just the colour. If you are matching an existing installation, bring a sample or clear photo to your local branch if you are unsure.
Recognise The Gutter Profile
112mm Half Round
Standard residential profile for homes, garages, extensions and replacements.
Shop half round
Square Line
Flat-fronted modern profile with more capacity than standard half round.
Shop square
Deep Flow
High-capacity half round style for larger roofs and heavy rainfall areas.
Shop deep flow
Krown Ogee
Decorative ogee-style profile for period homes and premium rooflines.
Shop Krown Ogee
Kommercial
Large-capacity system for commercial, agricultural and large buildings.
Shop KommercialQuick System Comparison
| System | Best for | Level flow capacity | 1:350 gradient capacity |
|---|---|---|---|
| 112mm Half Round | Standard homes, extensions and garages | 1.90 L/s | 2.43 L/s |
| Square Line | Modern properties and clean geometric rooflines | 2.20 L/s | 3.03 L/s |
| Deep Flow | Larger roofs and heavy rainfall areas | 3.80 L/s | 5.00 L/s |
| Krown Ogee | Decorative and period-style properties | 3.77 L/s | 4.60 L/s |
| 150mm Kommercial | Commercial, agricultural and large buildings | 4.60 L/s | 6.00 L/s |
Manufacturer Compatibility
| System | Compatible manufacturers noted on current guide | Important note |
|---|---|---|
| 112mm Half Round | Brett Martin, FloPlast, Freeflow, Hepworth, Hunter, Marley, Marshall Tufflex, Osma/Wavin, Polypipe | Most widely cross-compatible residential system. |
| Square Line | FloPlast, Freeflow, Hepworth, Hunter, Marshall Tufflex, Polypipe | Check profile carefully before mixing parts. |
| Deep Flow | Brett Martin, FloPlast, Freeflow, Hepworth, Hunter, Marley, Marshall Tufflex, Osma/Wavin, Polypipe | High-capacity half round style; match 120mm Deep Flow parts. |
| Krown Ogee | Aquaflow only | No cross-compatibility. Use Aquaflow Krown Ogee components throughout. |
| 150mm Kommercial | Hepworth, Marley, Osma/Wavin, Polypipe | Commercial profile; do not assume standard domestic fittings will work. |
Important: Krown Ogee is not the same as Klassic Ogee. The two systems are not interchangeable, so always confirm you are ordering the correct ogee fittings.
Before You Order
- Match the gutter profile first, not just the colour.
- Check the width and depth of the gutter run.
- Use matching union brackets, outlets, stop ends and angles where possible.
- For repairs, bring a sample or clear photo to your local branch if you are unsure.