Attached Flat Deck Patio Roof
A wall-attached flat patio roof of side-by-side steel deck panels on a front beam, two end beams and square steel columns.
Details
Category: Pergolas › Open and Fixed Roof Pergolas
By Huu Khanh Nguyen · Updated November 5, 2026
Parameters
| Name | Default | Unit |
|---|---|---|
| Sheets across | 12 | |
| Projection | 3600 | mm |
| Column height | 2400 | mm |
| Beam depth | 150 | mm |
| Beam width | 50 | mm |
| Column section | 65 | mm |
| Columns | 3 | |
| Roof fall | 1 | ° |
| Intermediate beams | 0 | |
| Frame finish | anodisedNatural | |
| Gutter | true | |
| Gutter width | 185 | mm |
| Overall width | (sheetCount * sheetCover) + plateSize - postSize | mm |
| Overall depth | Math.max(projection + (gutter ? gutterWidth - eaveOverhang : ribHeight * Math.sin(fall * Math.PI / 180)), projection - eaveOverhang - beamWidth / 2 - postSize / 2 + postSize + ((plateSize - postSize) / 2)) | mm |
| Overall height | Math.max(deckHeight + ribHeight * Math.cos(fall * Math.PI / 180), deckHeight + channelHeight) | mm |
| Deck rib height | 45 | mm |
| Deck cover width | 500 | mm |
| Deck overhang past the front beam | 50 | mm |
| Deck underside height at the wall | columnHeight + beamDepth + (projection - eaveOverhang) * Math.tan(fall * Math.PI / 180) | mm |
| Roof finish | steelZincAluminium | |
| Footing plate size | 172 | mm |
| Footing plate thickness | 8 | mm |
| End cap thickness | 3 | mm |
| Back channel height | 60 | mm |