Seat cushion replacement

Professional cushion replacement involves more than just swapping out old foam; it ensures your furniture meets modern safety standards while being tailored to your preferred firmness. Whether you have a modern suite or a cherished antique, renewing the fillings can add another decade of life to your investment.

What Does the Work Involve?

• Assessment: The tradesperson inspects the existing covers, zips, and seams to ensure they can withstand the tension of new, firmer fillings.
• Templating: Precise measurements are taken, or the old foam is used as a template to ensure the new inserts fit the covers perfectly without gaps.
• Foam Selection: Choosing the right density (e.g., Reflex foam) and adding "doming" with polyester wadding (Dacron) to give the cushion a plump, professional finish.
• Internal Repairs: Checking the seat webbing or springs, as sagging is often caused by a combination of tired foam and stretched supports.
• Fitting: Professional insertion of the new core into the original covers, often using a "silk film" vacuum process to prevent overstretching the fabric.
• Finishing: Re-stitching any loose seams, replacing broken zips, and ensuring the "loft" of the cushion is consistent across the entire suite.

Typical Costs

Prices for cushion replacement vary based on the quality of the foam and the complexity of the cushion shape. High-density "Reflex" foam is more expensive but will last significantly longer than budget alternatives.

The primary cost drivers are the foam grade and the "wrap." A stock-size cushion is much cheaper than a bespoke, T-shaped, or L-shaped cushion which requires intricate hand-cutting and gluing.

How Long Does It Take?

• Single Cushion Refill: 45–60 minutes if the foam is pre-cut and the tradesperson is working on-site.
• Full 3-Piece Suite: 4–6 hours, often requiring the covers to be taken away to a workshop for professional fitting and steaming.
• Bespoke Shaping: 1–2 days if the furniture has unusual dimensions that require custom templates and adhesive drying time.

DIY or Professional?

While you can buy foam cut-to-size online, fitting it into existing covers is notoriously difficult and can result in "lumpy" corners or broken zips. A professional upholsterer uses specific tools, such as foam saws and vacuum bags, to compress the foam for easy insertion without damaging the fabric. Furthermore, professionals ensure all materials comply with UK Fire Safety Regulations, which is vital for insurance and safety purposes.

Note: If you attempt a DIY refill, you must ensure the foam is CMHR (Combustion Modified High Resilience) to meet UK law.

Choosing the Right Tradesperson

• Look for members of the Association of Master Upholsterers & Soft Furnishers (AMUSF) for guaranteed craftsmanship.
• Check if they provide a "while you wait" service or if they need to take your covers away.
• Ask for photos of previous "feather-to-foam" conversions to see the quality of their shaping.
• Red Flag: Any tradesperson who suggests using "packaging foam" or scrap materials which do not carry fire safety labels.

Questions to ask:

• "What density of foam do you recommend for daily sofa use versus an occasional chair?"
• "Does your quote include Dacron wrapping and stockinette covers to prevent fabric wear?"
• "Are the materials compliant with the Furniture and Furnishings (Fire Safety) Regulations 1988?"

UK Regulations

• Fire Safety: All new foam must be CMHR (Combustion Modified High Resilience). It is illegal in the UK to supply non-compliant foam for domestic upholstered furniture.
• Labelling: If the tradesperson provides new covers, they must ensure the permanent fire safety labels are preserved or replaced.
• Waste Disposal: Old foam is bulky and often non-recyclable in standard bins; professional tradespeople should dispose of this via commercial waste channels.

Common Problems

• "Bottoming Out": This happens when the foam density is too low for the user's weight, causing the cushion to flatten completely when sat upon.
• Fabric Creeping: Without a "stockinette" inner cover, the friction between the foam and the cushion cover causes the fabric to twist and misalign over time.
• Zip Failure: Forcing a new, firm cushion into an old cover often breaks the original zip; a pro will check the zip strength before starting.
• Incorrect Loft: If the foam is cut too thin, the fabric will look wrinkled and baggy; if too thick, the seams may burst.

Frequently Asked Questions

How long will new foam cushions last?

High-quality Reflex foam typically lasts between 7 and 10 years with daily use. Budget foams may start to soften and lose their shape within 2 to 3 years.

Can I change my feather cushions to foam?

Yes, this is a very common request. Foam provides more support and removes the need for constant "plumping," though it will feel firmer than feathers initially.

What is 'Dacron' and do I need it?

Dacron is a polyester wadding wrapped around the foam. It gives the cushion a rounded, "plump" look and prevents the fabric from sliding around on the foam core.

My sofa is sagging but the cushions feel okay. What's wrong?

The issue is likely the webbing or springs underneath the cushions. An upholsterer can usually tighten or replace these supports during the same visit.

Is it worth refilling a cheap sofa?

If the frame is solid wood, it is almost always worth refilling. If the frame is made of thin chipboard or is already wobbling, the cost of professional foam may exceed the value of the sofa.

Will new foam smell?

New foam can have a slight "chemical" odour for the first 24–48 hours due to the manufacturing process. This is normal and dissipates quickly with good ventilation.