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How To Fix A Sagging Couch? [Practical Tips For Sofa Repair]

By: Susie
Updated On: November 23, 2023

You’re settling in for movie night when, as you sit on your couch, you notice it’s not as supportive and comfortable as it used to be.

You’re more aware of the sag than the plot twist in your movie. So, how can you fix a sagging couch? The problem is fairly common but, thankfully, not impossible to tackle yourself.

Armed with a little knowledge and determination, you can breathe new life into your cherished lounging space. It’s all about giving your sofa that much-needed face-lift without breaking the bank or requiring professional intervention.

Knowing how to fix a sagging couch can save money and make your living room comfortable again, ready for many more binge-worthy nights.

What are the reasons for Sagging a Couch?

Before diving into the solutions on how to fix a sagging couch, you need to know what could be causing it in the first place.

What are the reasons for Sagging a Couch?

We’ll identify and briefly discuss the common reasons that turn your once firm and comforting couch into a saggy seat.

  • Worn-out springs: Springs provide buoyancy to your couch. Over time, these can wear out, losing their springiness and leading to a slump in your sofa.
  • Damaged frame: The frame is essentially the skeleton of your couch. If its parts are fractured or broken due to excess weight or misuse, you’ll start noticing a sag.
  • Deteriorated cushion foam: Cushions play an important role in offering comfort and support. As they deteriorate with age or constant use, so does their ability to bounce back from weight.
  • Broken seat webbing: Webbing is used as a base support for couches. The cheap quality or old webbing often breaks and loses its strength, causing a sag.
  • Excessive use or wear: If you have one favorite spot where you mostly sit, it may result in uneven wear, thereby causing a dip in that area.
  • Poor quality materials: Not all couches are created equal; cheaper sofas might not have the same lifespan as more costly counterparts due to inferior materials used.
  • Age of the couch: Just like everything else, the age of your couch might be why it’s falling flat. Depending on its original quality, about every five years, most people notice their couch starting to sag.
  • Inadequate support structure: Lack of adequate reinforcement within the design causes uneven distribution of weight, resulting in deformation over time.
  • Uneven distribution of weight over time: This means one part of your sofa gets repeatedly sat on while others do not.
  • Humidity and temperature changes affecting materials: Lastly, sometimes environmental factors may play a role in the deterioration of couch material.

Identifying the cause of your sagging couch helps tailor the best solution and also avoid making the same mistake in the future. It’s one step closer to reclaiming your comfy spot for relaxation.

Also Read: How Much Does An Average Couch Weigh? [Buying Guide]

How To Fix A Sagging Couch: 15 best ways

Are you feeling exasperated with your saggy couch, and just thinking about buying a new one seems like an extreme solution? Well, you’re at the right place because we have put together some simple DIY tricks to spruce up your couch’s life.

How To Fix A Sagging Couch: 15 best ways

Tighten Screws and Bolts on the Frame

The nuts and bolts of any furniture piece literally hold it together, maintaining its shape and structure.

Over time or with vigorous use, these components can get loose or misaligned which eventually leads to a sagging couch.

Start by identifying any loose screws or bolts in the frame of your couch. You’ll need to remove all cushions first for this step.

Look closely; sometimes, these screws can be hidden under the fabric. Tightening these up might be all your couch needs after years of usage.

You’ll need a screwdriver or a wrench, depending on the type of fastener used in your couch.

Ensure that you turn them tight enough so they sit snugly into their holes, but avoid overtightening as it can strip the threads, making it harder for repair in the future.

Replace or Repair Springs

If tightening some screws didn’t quite work out, don’t fret! Next stop – springs.

Springs provide support and bounce to your sofa, but when they give out, things get pretty slumpish.

The process is simple; first, locate where springs are installed, which is generally underneath the seating area.

You might have to flip over your sofa for better access and also will need pliers for removing and replacing springs.

Not every worn-out spring needs replacement; simple repair could work, too. In case they are stretched out, get a thick wire (baling wire would work) and loop it around one end of the spring, pulling it taut, effectively restoring its bounce.

When replacing springs, pay attention to their installed orientation; mix matching could make things worse instead of bettering them.

Add Support Beams or Brackets to the Frame

Over time and continued use, couch frames can become weak, leading to sagging.

But you can revitalize your couch by strengthening its underlying structure with additional support beams or brackets.

This might sound not very easy but it’s simpler than you think. First things first, measure the inside width of your couch frame to ensure a snug fit for your new support beam. Cut a beam of suitable thickness and length from heavy-duty wood.

Fit this into the frame, ensuring it’s flush with existing frame components. You could also employ metal brackets at joints for extra strength. Fixing them securely in place could make a world of difference.

Insert Plywood Board Under Cushions

Simple solutions often turn out to be incredibly effective – like sliding a plywood board under those dipping cushions.

The method is beneficial when cushion foam is still in prime condition but lacks adequate support below.

First off, get a plywood sheet – thin enough to be inconspicuous but strong enough to provide solid support.

Measure the area under your cushions and cut the plywood board accordingly.

Slide this board underneath your cushions, making sure it’s evenly distributed across the width of your sofa seat.

With that simple addition, you’ll get an instant lift, eliminating all signs of sagging.

Explore More: 12 Best Nugget Couch Dupes In 2024 [Get The Look For Less]

Restuff Sagging Cushions with High-Density Foam

Cushions losing their fluffiness can be another reason for that dreaded dip in your couch comfort. Fewer things are as satisfactorily rewarding as restuffing old sagging cushions.

Get yourself some high-quality, high-density foam that would stand up better against wear and tear while providing improved comfort and durability than regular foam.

To replace it, unzip your cushion cover (if it has one), remove the old stuffing, and replace it with a spanking new foam cut according to the exact size.

Remember not to skimp out while stuffing; the more foam, the more comfort! Zip it back and enjoy your upgraded pillowy paradise.

Use a Sofa Saver or Support Board

A saggy couch can make your living room look uninviting, not to mention the lack of comfort it offers. A quick fix could be using a sofa saver or support board.

These pre-fabricated boards can slide under your cushions, providing that much-needed boost instantly.

Often made of robust materials like vinyl or wood, they are designed to withstand considerable weight and provide firm support.

To ensure it doesn’t stick out as a sore thumb, choose one that matches the size of your couch seating area.

Using this may slightly alter the feel of your couch, but it will definitely be more comfortable than a hollow one.

Replace Worn-Out Webbing or Straps

If your couch has lived through years of movie nights and Sunday siestas, there’s a good chance that the webbing underneath is worn out. Webbing consists of straps that hold up the cushions and provide support.

Replacing webbing comes in handy when all other issues have been addressed; loose screws tightened, springs replaced, but something still feels off when you sit down.

Use upholstery webbing available online or at home furnishing stores to make your DIY repair job hassle-free.

While at it, always test for the tension in new straps. Too loose, and you’re back to square one; too tight, and they might snap during heavyweight.

Re-Tie Loose or Broken Support Systems

Tying up those loose ends is more than just an expression when it comes to fixing sagging couches.

Various internal elements like springs and bars work collectively as a support system that holds your couch symmetrically.

These tied-up connections can break or loosen, leading to sinking spots on your couch. Re-tying these connections restores structural integrity, making it as good as new.

Any heavy-duty twine or cord works well for this task, followed by treating the repaired zones with lubricant for smooth functioning in the future.

Also Read: Nugget Couch Review 2024 [Your Kid’s Next Favorite Furniture]

Check and Reinforce Couch Frame Joints

Loose or worn joint connectors can also jeopardize the couch’s structure, contributing to sagging.

The connectors are likely hidden behind some fabric covering. You’ll need to unscrew this material.

Check the L-brackets or dowels holding your couch’s frame together for any damage or loose fittings.

If your dowels are damaged, replacing them can prove to be a reasonably cost-effective measure. Just make sure you match the dimensions before making a purchase.

In case L-brackets are loose, you can tighten the screws, as we discussed earlier. For reinforcing these joints, wood glue or construction adhesive can come in handy. Remember to allow sufficient drying time before you take a seat!

Regularly Flip and Rotate Cushions

Often overlooked, the simple act of flipping and rotating your couch cushions uniformly distributes wear and tear over time, preventing premature sagging.

Cushions bear the brunt of our weights; hence, flipping them is akin to even distribution of load – think rotating tires on your car.

On days when you’re doing some house cleaning stuff, make it a point to flip cushions over horizontally and swap them from one end of your couch to another if possible.

Besides prolonging your cushions’ lifespan, doing so will give them that plush feel longer while delaying any impending sags from cropping up too soon.

Use Furniture Legs or Risers for Even Height

Uneven weight distribution can become a significant contributor to a sinking sofa over time.

Furniture legs or risers provide optimum height adjustment, enhancing support distributed across all points equally.

You’ll need to install these legs at each corner of your sofa, ensuring they are suitably tight but not excessively threaded inside.

Risers come in various heights, so select one aligning with what you think is the best elevation covering uneven flooring, if any, underneath your sofa.

Using a furniture riser also delivers an added bonus of additional undercouch storage space. Just remember to measure your sofa’s original legs before purchasing replacements to retain your couch’s proportions and comfort.

Explore More: How Long Should A Couch Last? [We Dug Deep Into Years Of Reviews]

Replace Old or Flattened Cushion Fillings

There might be times when you might need to replace your old or flattened cushion fillings. Over time and frequent use, these fillings lose their form and lack the comfort they once had.

Look for high-density foam replacements that offer longer life and better comfort. Unzip the cushion cover, pull out the existing filling, and replace it with new foam cut to size.

Don’t forget about polyester batting. This stuff is wrapped around your foam and adds an extra pad of softness while also extending your foam’s lifespan. It’s like a little armor for your cushions, keeping them in shape while enhancing comfort.

Sew or Patch Tears in Fabric

Many little things can lead to rips in the fabric, like playful kids, pets with sharp claws, or unknowingly carrying sharp objects.

Big or small, you should address these tears immediately before they grow larger. Focusing on such a tear is as distracting as that sag was.

You will need matching fabric patches large enough to cover the tear and surrounding area.

Apply adhesive to the patch’s underside, ensuring all corners are amply covered; press it firmly over the tear, making it merge with existing fabric seamlessly.

For sewing up views, in case glue ain’t for you – a simple needle-thread job could suffice.

Apply Wood Glue to Reinforce Wooden Components

Wood glue comes into play when dealing with crack damage or any loose wooden component. Apply it evenly across cracks or joints.

Make sure you’ve cleaned the surface thoroughly before applying any adhesive.

After dabbing some glue, squeeze components together tightly until they bond, forming a sturdy unit once again.

You might have to secure them using clamps if available for stronger reinforcement, not too tight, though, lest damage wood further.

Give adequate drying time because only when dried properly does wood glue shine, maintaining the integrity and strength of wooden components beautifully.

Consult Professional Upholsterer for Complex Issues

While your effort and interest in fixing up that couch is commendable, there are instances when a professional is needed.

Don’t be discouraged if you’re unable to fix your sagging couch, particularly in the face of complex issues.

Any thorough upholstery job requires more advanced knowledge and tools. Upholsterers have years of experience fixing furniture issues, from damaged spring systems to comprehensive structural repairs.

Allow them to assess your couch; they may find what your untrained eye didn’t catch. Be it a worn-out frame or an underlying structural glitch, these pros will ensure that your favorite lounge piece is returned to its original glory.

Also Read: 25 Best Places To Buy A Couch In 2024 [Reviewed By Experts]

How to Repair or Replace Couch Cushions?

Over time, the once-plush cushions of your couch may start to sag, compromising not just comfort but also the visual appeal of your sofa.

How to Repair or Replace Couch Cushions?

On the bright side, a sagging couch can be salvaged with a simple DIY project: repairing or replacing cushions.

With some patience and elbow grease, you can restore your sofa cushions to their prime.

  • Unzip Cushion Cover: Begin by carefully unzipping your cushion cover. This will allow you easy access to the foam cushioning inside.
  • Remove Existing Foam: Once open, gently remove the existing foam material.
  • Mark New Foam’s Position: Now, take your replacement foam and finalize its positioning on the cushion cover. You may use temporary marks for precision.
  • Wrap with Dacron/Polyester Padding: After you have decided on the positioning, wrap the new foam in Dacron or polyester batting for additional comfort and support.
  • Slide Cover over Foam: Once done with wrapping, slide the cushion cover back onto this restored foam core.
  • Zip The Cushion Shut: Finally, zip up your cushion cover securely and place it neatly back on your couch.

When opting for replacement foam, ensure that it’s of high quality and appropriately sized for your cushions.

Some highly recommended choices include high-density polyurethane foam or memory foam. They not only provide a firm structure but also come with added longevity.

A revived couch that boasts renewed pleasure and coziness. This simple yet effective restoration process takes little time and resources but gives incredible results in return.

Explore More: How To Clean A Microfiber Couch [Freshen Up Every Kind Of Couch]

FAQs About Fixing A Sagging Couch

What materials can I use to fix a sagging couch?

Common materials used include plywood, polyurethane or memory foam, duct tape, polyester batting or Dacron, and durable fabric strips.

How can I prevent my couch from sagging?

Aim to distribute your weight evenly when sitting, regularly plump and rotate cushions, and avoid bouncing or placing heavy items on the couch.

Can a sagging couch impact my health?

Yes, Consistently using a sagging couch may lead to back pain and poor posture due to inadequate support.

Will it be more cost-efficient to buy a new couch instead of fixing it?

Not necessarily. While severe damage might require professional help or replacement, minor issues could be fixed easily at home, which is financially beneficial.

How do I know if the damage to my couch is too severe for DIY repairs?

If the frame is severely damaged or if multiple springs are broken, it’s generally best to seek professional help or consider replacing your couch.


Fixing your sagging couch isn’t just about saving money, but it’s also about preserving a cherished piece of your home. You can prolong the durability of your couch, making it comfortable and appealing again.

Knowledge is power, so equip yourself with the right steps to give your sagging couch its much-needed face-lift.

Regular maintenance is always easier than extensive repairs. Consistent check-ups on your furniture will prevent minor issues from escalating into major ones that steal away the comfort of your lounging hours.

And if there’s something out of your league, never hesitate to seek professional help.

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