How to measure a hot tub cover
How to measure your Hot tub/Spa cover
When shopping for a new hot tub cover you will need to know how to correctly measure it. We have written this guide to make it as simple and accurate as possible.
It is extremely important that you submit the correct measurements so that it will fit properly. Even if we have your Hot Tub make and model on file, take time to double check the measurements to be sure.
Step 1 - Measuring your Hot Tub
Regardless of the shape of your Hot Tub, measurements should be taken from the hot tub itself 1st and your old hot tub cover 2nd. Your old cover can warp or shrink over time. However if your old spa cover still fits well, you can use the measurements for verification purpose once you've measured the hot tub. If measurements between the hot tub and the old cover differ, we advise you to use the measurements from the hot tub.
Regardless of the shape your Hot Tub, you should measure from the outside dimension of the acrylic (also known as lip to lip). After you have a "lip to lip" measurement you may add up to 1" on both length and width to your final measurement. This will give you a 1/2" of play all around your Hot Tub Cover.
Step 2 - Measuring the Cover Radius (if applicable)
Many spa covers have rounded corners which means you must measure the corner radius. This is the measurement that scares everyone. Fear not...it's really quite simple
The easiest way to measure the corner radius of your hot tub cover is to use a carpenter's square. Place the square on the corner of your existing cover or on the corner of your hot tub.
The measurement comes from the inside corner of the carpenter’s square (A) to the point where it first touches the hot tub (B). This distance (R) equals the radius of the hot tub’s rounded corner
Step 3 - Measuring the hot tub cover skirt
The Cover Skirt is the flap that hangs from the bottom of the hot tub cover. The purpose of the skirt is to protect side of the acrylic that is not concealed by the hot tub cover. The sun's UV rays have a negative effect on acrylic.
Measure the skirt length from the top of the acrylic to the bottom of the lip (or if measuring off of the old cover, measure from bottom of the cover to the edge of the skirt). If you have a wood rail as in the picture above, measure from the top of the wood rail to the top of your hot tub acrylic. If the skirt is too long and resting on the wood rail, it might bunch up and push the cover up. If you do not have a wood rail, then measure from the top of the acrylic to the bottom of the lip and add 1/2".
Step 4 - Measuring the Strap Length/Position
You can request the length of the strap as well as the location however these measurements are not guaranteed and are not covered under our return policy. The strap length should be measured from the bottom of the skirt to the end of the buckle. When requesting specific strap locations, measure from the center of the side in which the straps are to be located. Example: 10" from the center of side A
Measuring a Square Hot Tub Cover
A Square hot tub cover is very easy to measure. From the Hot tub itself, measure the outside dimension of the acrylic or spa shell (also known as lip to lip), and add 1" to each dimension. Then measure the skirt length following Step 3 above.
- Measuring a Rectangle Hot Tub Cover
- Measuring a Square Hot Tub Cover with Round Corners (Radius Corner)
- Measuring a Round Hot Tub Cover
- Measuring a Cut Corner Hot Tub Cover
- Measuring an Octagon Hot Tub Cover
- Measuring a Hexagon Hot Tub Cover
A Hexagon hot tub cover has 6 sides. From the Hot tub itself, measure the outside dimension of the acrylic or spa shell (Width and Length). Then measure the angled side as show in the image. Then measure the skirt length following Step 3 above.
If you have any questions or need advice on how to measure your hot tub cover please contact and we will be glad to help.
Hot Tub measuring guide Pool Store Canada 2015