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How to Fix Sagging Couch Cushions with Plywood or Particle Board

Updated on August 4, 2012
Source

The furniture we have in our homes are use a lot day to day. You want a comfortable place to just sit down and take a load off after a hard days work and a place to just relax and spend time with your loved ones. But what do you do when your couches no longer provide that relaxing place because the cushions have begun to sag? The answer is simple. Instead of purchasing new furniture which can be quite expensive all you need to purchase is plywood or particle board to fix this problem yourself without putting a strain on your wallet.

Materials Needed

Measuring Tape

1/2 inch Sheet of Plywood or Particle Board

(Particle Board is generally cheaper than Plywood)

Circular Saw

Duct Tape

Locate back side of couch frame underneath the top back cushions.
Locate back side of couch frame underneath the top back cushions. | Source
Measure width from back of frame to the front of the couch frame.  Also measure the length of the frame.
Measure width from back of frame to the front of the couch frame. Also measure the length of the frame. | Source

Taking the Measurements

Your first step is to take measurements for the plywood. To do this you will need to remove the cushions from your couch. After the cushions are removed you will need to find the back side of the couch frame. Once the back side is located you will need to measure from the back side to the front side of the frame and write this measurement down. Next you will need to measure the length of area under the cushions. Remember to make sure you measure in between any framing on the backside of the couch because you will need to slide the plywood underneath back cushions to rest on top of the frame.

1/2 inch particle board.
1/2 inch particle board. | Source

Making the Cut

Once your measurements have been taken it is then time to cut the plywood to fit on top of the couch frame. If you have more than one piece of furniture being fixed you will want to have all measurements recorded so that you can make sure you are cutting the plywood wisely. You do not want to have to buy more plywood than is needed just because you should have cut it differently.

You can generally have enough plywood to fix a stand couch and love seat while still having some plywood left over.

Installing the plywood on top the couch frame.
Installing the plywood on top the couch frame. | Source
Duct Tape on outer edge to prevent unwanted scratches.
Duct Tape on outer edge to prevent unwanted scratches. | Source
Plywood underneath slipcover or other material to prevent snags on couch and cushions.
Plywood underneath slipcover or other material to prevent snags on couch and cushions. | Source

Installing the Plywood

Once the plywood has been cut to fit on top of the couch frame it is time to install it. You will want to make sure you slide it back far enough to rest on the back side of the frame and you also want to be sure that the plywood does not come out to far past the front side of the couch frame. You may have to make some cutting adjustments until you end up with the proper fit.

When you have the plywood cut to the correct size and it fits correctly in place you may wish to apply a layer of duct tape on the area that rests on the front side of the frame to prevent unwanted scratches on your legs. You may also wish to cover the plywood with an old sheet so that is does not snag the material on your couch and cushions.

We use two piece slipcovers on our furniture and it covers the plywood preventing any snags on the material of the couch.

The Final Results

When you have completed the steps above all that is left to do is replace your cushions back onto the couch and enjoy! You will no longer feel as though you are sinking into nowhere land while sitting on your furniture. You will now feel as you did when you first sat on your furniture after you purchased it!

You can relax comfortably especially knowing that you did not drain your wallet to make this quick and simple repair to your furniture. Now you can enjoy many more years relaxing on your couch with your family!

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    • profile image

      abdiyohan 2 years ago

      I have a hypothesis for the comment above from 'Any', if you fix the sagging with plywood and it becomes too firm and uncomfortable, then perhaps filling the cushions with new medium or high density foam will help bring back some of that comfort. It's pretty cheap on amazon, certainly cheaper than a new couch. I'm actually about to try out this hypothesis myself!

    • profile image

      Any 3 years ago

      We did this and it is SO firm. Not very comfortable at all

    • profile image

      julie 4 years ago

      thank you so much

    • CassyLu1981 profile image

      CassyLu1981 5 years ago from Spring Lake, NC

      Excellent ideas on how to fix those crazy cushions!!! We have gotten rid of a couch because of this before. If only I knew it was fixable :) Now I know! Voted up and useful!!!!

    • Om Paramapoonya profile image

      Om Paramapoonya 5 years ago

      I like this practical and budget-friendly way to fix an old couch. Sounds like it should do the trick! Thanks a lot for your step-by-step instructions and tips.