| Business | Phone |
| J Eck & Son Inc 614 71st St, Darien 60561 | (630) 963-0230 |
| John Gorgol Rooftech Systems 402 Maple Ln, Darien 60561 | (630) 969-1910 |
| K B & Sons Installations 8317 Highpoint Cir B, Darien 60561 | (630) 325-6842 |
| Rooftech Systems 402 Maple Ln, Darien 60561 | (630) 654-9900 |