Measuring for your new Garage Door

Measuring for your new Garage Door

Whether you are planning to install an up & over door, sectional door, roller garage door or side hinged door, the basic rules and advice is always the same. Be sure to always measure in millimeter for accuracy. To start…

Measure the structural opening

Starting with the width, take measurements across the top, middle and the bottom to ensure that the opening is square. When checking the height, measure from the solid based floor to underside of lintel. Take one measurement from the left, middle and the right. Use the smallest measurements that you have taken.

 Check the headroom availability

Different door types require different amounts. If you are purchasing a manually operated door to begin with, with the intention of upgrading with a motor at a later date, take this into consideration. The headroom measurement is taken from the bottom on lintel upward to the nearest obstruction (joists or ceiling). If your chosen door is either a sectional garage door or up and over door, then you will need to check if there are any joists further inside the garage that could potentially be an obstruction.

For some door types, the final measurements required are to check the available side room. Single skin roller garage doors fit on the internal face of the brickwork and require between 75mm – 150mm of side room depending on the width of the door being installed. If there is no side room available, then the structural opening can be reduced by adding timber posts to each side, creating the required space.

Another door type is sectional garage doors. A completely different design with its hardware, this door retracts into the garage space. Can be installed as a between the fit or internal face of the brickwork.

Insulated roller doors can be installed both ways as well. If there is no available side room then the between the fit install could be the ideal solution. The guides are attached within the structural opening and can often be color matched. The door curtain sits securely within the guide rail and moves smoothly up and down within when required. If there is no side room available and you did not want to reduce the opening, this door can be installed as an external fit. A box would be required to house the door curtain in, to protect it from the elements and intruders. Cosmetically a box finishes the look.

For all door types, take into consideration some of the most common door obstructions

• Beams
• Brick piers
• Boilers
• Gas or water pipes
• Gas or water meters
• Lights
• Sloping ceilings
• Sockets
• Windows

Remember that once an order has been placed with a garage door manufacturer for a new door to be made, measurements cannot be altered.

Simply by taking your time and asking your garage doors supplier for any technical assistance, you should have no problems at all.

Written by Dan Joleys @ and who often writes about security related issues around the home.

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