# what size extension spring for garage door

· Know How Now

## How do I know which spring my garage door needs?

So, how do you tell if a garage door spring is a left or a right spring on your garage door: check where the end of the spring is pointing and identify the wind direction. If its endpoints in a clockwise direction, then it is a left-wound spring and vice versa.Oct 22, 2019

· Know How Now

## Can I use a heavier garage door spring?

If your garage door springs have lasted less than five years, or if you plan to live where you are for many years, you may want to try the extra long life torsion springs. By using larger springs, you can, in most cases, quadruple your spring life while only doubling the cost of the springs.

## How much tension should a garage door spring have?

A rule of thumb with springs is that four quarter turns equals a full revolution and the spring needs to be tightened a full revolution for every foot of door height (e.g. 7-1/2 foot door = 7 revolutions +2 (30 quarter turns).Dec 18, 2014

## How far can you stretch a garage door spring?

The package that the springs came in says maximum safe stretch is 42 inches, which isn't much more than the non-stretch length of 25 inches.Apr 22, 2017

## Can garage door extension springs be too strong?

When garage door springs are too large, they provide more strength than the door needs. It will open with too much force, rolling up very quickly and compromising its safety. Kids or even unprepared adults could be knocked over by the sudden force when they try to open it.Aug 13, 2020

## How do I know what garage door extension spring I need?

For a one car garage door, carefully lower the garage door onto a bathroom scale in the center of the garage door. Read the scale. The weight that shows on the bathroom scale is the size extension spring you need to order. For a two car garage door, carefully lower the garage door on to two bathroom scales.Oct 7, 2011

## Does a double garage door need two springs?

As a rule of thumb, a single garage door takes one torsion spring. A double-wide garage door takes two springs. However, if you have an exceptionally heavy single door, you may need two torsion springs.

## Does garage door extension spring length matter?

When garage door springs are too large, they provide more strength than the door needs. It will open with too much force, rolling up very …

## How do I choose a garage door torsion spring?

If the springs on your garage door are different sizes make sure to identify the best match for your door. After identifying the correct spring …

## How far can Extension spring stretch?

In particular, seven feet garage doors have 25-inch extension springs that stretch out to 42 inches. Conversely, eight feet garage doors feature 28-inch extension springs that stretch out to 48 inches. Extension springs are easy to install. Additionally, homeowners use them in garages that don't have a lot of headroom.Nov 28, 2020

## How far does a garage door extension spring stretch?

Length. Since extension springs have to stretch during the loading phase and contract to help the door raise, length plays a major role in door operation. Extension springs for a 7ft tall garage door are a standard 25 inches and stretch 42 inches. Springs for an 8ft tall door are usually 28 inches and stretch 48 inches …

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