Precision-engineered roller doors for homes and businesses. Buy direct from the UK manufacturer to cut out the middlemen.
Getting your measurements right is the first and most important step to a perfect installation. We manufacture every roller door based on the "Daylight" size (the actual physical hole in the wall).
Before you begin, grab a tape measure and a notepad. Always take your measurements viewing the opening from the inside looking out.
How your door attaches to your garage depends entirely on the clearance you found in Steps 3, 4, and 5 in the previous section. Below you can see a birds eye view cross section of your garage door opening and how to install your garage door.
Fixing internally, completely behind the opening.
How it works: The guide channels and the roller box are mounted flat against the inside wall of your garage.
Why choose this: This is the cleanest-looking installation. It hides the tracks from the outside and maximizes your drive-through width and height.
What you need: You must have at least 90mm of clear space on both the left and right sides, plus adequate headroom above the lintel.
Fixing directly between the opening.
How it works: The guide channels and roller box are fitted inside the “tunnel” of the brickwork.
Why choose this: Necessary if your garage walls are completely flush with the opening and you have zero internal side room.
⚠️ Crucial Warning: Because the roller box sits under the lintel in the opening, you will lose up to 370mm of drive-through height (300mm for the box + 70mm for the bottom slat hang-down). You will also lose 180mm of drive-through width (90mm per track).
One side Face Fixed, one side Reveal Fixed.
How it works: One side of the door is fixed behind the brickwork, and the other side is fixed inside the tunnel.
Why choose this: The perfect problem-solver if your garage is asymmetrical (e.g., you have 90mm of space on the left, but the right side is built flush against a boundary wall).
Fixed behind the opening, but overlapping.
How it works: The door is fitted behind the opening, but because you have less than 90mm of side room, a portion of the guide tracks will be visible within the opening.
Understanding your final clearances. Use these simple dimensions to calculate your finished opening.
To keep the roller box completely hidden behind your lintel (Option A), you need the following headroom:
77mm Slat Doors: Require 300mm of clear space above the lintel. Diagram shows 77mm slat door setup.
55mm Slat Doors: Require 205mm of clear space above the lintel.
The “Hang-Down” (Drive-Through Height) Even when your roller door is fully open, the bottom slat will always hang down from the box by approximately 70mm.
To calculate your true drive-through height on a Face Fix door, take your total opening height and subtract 70mm.
Take this handy worksheet into the garage with you. It includes all the diagrams you need to easily record your exact dimensions before building your door online.
