Foam Facts

ZIPCushions offers three fill types: high-density (HD) foam for firm, lasting seat support; Dry Fast foam, an open-cell foam with antimicrobial resistance to mold and mildew for outdoor and damp use; and fiber fill, a soft polyester fill for throw pillows and plush cushions. Foam can be layered for extra thickness.

Yes, ZIPCushions offers foam thickness from 2 to 12 inches, and high-density foam can be layered to reach even greater cushion depth. Choose the thickness that matches your comfort preference and furniture use when placing a custom order.

Foam inserts are not machine washable; clean them by spot-treating stains with mild soap and water, blotting rather than soaking, and air-drying fully before reuse to prevent mildew. ZIPCushions sells foam inserts separately, so a stained or worn foam core can be replaced rather than deep-cleaned if it's beyond spot cleaning.

Yes, ZIPCushions sells foam inserts on their own, without the outer cover, specifically for replacing worn-out foam in existing cushions. Choose from high-density foam, Dry Fast foam, or fiber fill, cut to your cushion's exact size, at https://zipcushions.com/products/couch-foam-cushions.

Restuffing ZIPCushions' sofa cushions is usually worth it if the sofa frame is in good shape but the seating has gone flat or lumpy, cheaper than a new sofa and can revive comfort. ZIPCushions sells foam and fiberfill inserts separately, so you can likely replace just the fill without buying a new cover; confirm current inserts availability with support.

ZIPCushions recommends Dry Fast foam for outdoor seat cushions because its open-cell structure drains moisture and resists mold and mildew in damp conditions. High-density foam also works outdoors if kept shaded and dry, best for covered outdoors, while fiberfill is better suited to indoor or covered use.

ZIPCushions sells replacement foam inserts on their own, without the outer cover, at zipcushions.com/pages/foam-faqs. For outdoor use, choose Dry Fast foam, an open-cell foam with antimicrobial resistance to mold and mildew, cut to your existing cushion's exact size.

ZIPCushions' Dry Fast foam, its recommended outdoor option, has an IFD hardness of 26 ±4 kgf/323cm² and a density of 1.75 ±0.112 lb/ft³, softer than the high-density foam used for regular seating. Its open-cell structure is what makes it suited to damp, outdoor conditions rather than the density number alone.

A plywood or hardboard support board placed under the couch cushions, on top of the springs or webbing, is a common way to firm up sagging seating. ZIPCushions also sells high-density foam inserts separately, so replacing a soft or worn insert with firmer, higher-density foam can solve sagging at the cushion level itself.

ZIPCushions' high-density (HD) foam is its firmest standard option for sofa cushions, with an IFD hardness of 34 ±4 kgf/323cm² and a density of 2.0 ±0.075 lb/ft³, described as “the right mix of soft and hard.” It's firmer than both Dry Fast foam and fiberfill.

Foam cushions can lose their shape and firmness over years of use, are not machine washable and need spot cleaning, and standard high-density foam retains moisture in damp or outdoor conditions unless it's an open-cell type like Dry Fast foam. ZIPCushions notes foam typically lasts around more than 3 years with proper care.

ZIPCushions says foam inside a couch cushion should never be soaked or machine washed, since water breaks down its cell structure. Instead, spot-clean the foam with a damp cloth and mild soap, blot out moisture, and air dry fully in a ventilated spot before reinserting it into the cover.

ZIPCushions primarily sells replacement foam inserts cut to your cushion's measurements rather than running a labor-based restuffing service, though its sales team has helped some customers restuff pillows on request. High-density foam suits firm seating, fiber fill suits softer cushions, contact support to ask about your specific item.

ZIPCushions recommends spot-cleaning couch foam only, never soak or machine-wash it, since water breaks down foam's cell structure. Blot moisture with a damp cloth and mild soap rather than rubbing, then air dry fully in a ventilated area. Air high-density foam in sunlight occasionally to prevent mold; see our deep-clean guide for stains instead.

ZIPCushions cuts foam inserts to your couch cushion's exact measurements rather than selling a fixed size. High-density foam suits firm seat cushions, while fiber fill is better for back cushions and throw pillows.

ZIPCushions recommends never soaking or machine-washing polyester fiber fill — the loose hollow-fill stuffing inside some cushions — since moisture compacts and damages the fibers. Spot-clean the cover with mild soap and a damp cloth, keep the fill itself dry, and air dry fully in a ventilated area.

ZIPCushions sells high-density foam alone without the cushion cover in thicknesses from 2 to 12 inches, so you can order a thicker insert than a standard cushion typically comes with for extra support or a plusher seat.

ZIPCushions' high-density (HD) foam for seat cushions is specified at 2.0 (+/- 0.075) lb/ft³ density with an IFD hardness of 34 (+/- 4) kgf — firm enough for daily seating on dining chairs, benches and ottomans.

ZIPCushions does not offer a restuffing labor service or publish a restuffing price; it sells replacement foam inserts separately, with price depending on shape and size, so you can restuff the existing cover yourself.

ZIPCushions doesn't publish a set labor price for RV and camper cushion reupholstery, though our team has handled this work by mail-in service, with past jobs taking around four weeks. We also sell custom-measured replacement covers and foam separately, with covers starting around $18 depending on size and fabric. The cost varies depending upon the sizes and customization options selected.

ZIPCushions recommends deep-cleaning foam couch cushions without soaking them: spray the surface with a mild soap-and-water solution, work it in with a soft brush, then blot out moisture with a dry towel rather than rinsing. Air dry fully in a ventilated spot before reassembling the cushion.

High-density (HD) foam is ZIPCushions' recommended fix for a sagging couch cushion — it's firmer than fiber fill and holds its shape under daily seating, specified at 2.0 (+/- 0.075) lb/ft³ density. Replacing just the foam insert, rather than the whole cushion, is usually enough if the cover is still in good shape.

ZIPCushions doesn't publish a set price for reupholstering a seat cushion, though our team has handled reupholstery inquiries and quotes them case by case. As a lower-cost DIY alternative, we sell custom-measured replacement covers separately, starting around $18 depending on size and fabric.

Cushion foam and upholstery foam are generally the same category of material — high-density polyurethane foam — though the specific density and firmness are chosen for the job. ZIPCushions' high-density foam, for example, is specified at 2.0 (+/- 0.075) lb/ft³ with a firm IFD hardness rating, built for seat cushions rather than softer padding uses.

High-density (HD) foam is ZIPCushions' firmest cushion filling — described as thick and firm to the touch, with an IFD hardness of 34 (+/- 4) kgf — firmer than its Dry Fast foam or loose fiber fill.

ZIPCushions' Dry Fast Foam gives outdoor sectionals a real advantage in rainy climates — its open-cell structure lets water drain through instead of soaking in, so cushions dry faster and resist mold, rot and mildew. It's built specifically for patios, boats and poolside furniture exposed to regular moisture.

ZIPCushions' Dry Fast Foam and fiber fill feel different underneath an outdoor sectional cushion. Fiber fill is soft and molds around the body for a cozy, huggable sit, while Dry Fast Foam is firmer, open-cell, and built to drain and dry quickly outdoors, holding its shape under regular use.

ZIPCushions uses high-density foam for outdoor sofa seat cushions because it holds its shape and supports body weight better over time, while fiber fill feels softer and molds to the body but compresses faster under regular sitting — better suited to back and throw cushions than main seating. With proper care, ZIPCushions foam typically lasts up to 10 years.

ZIPCushions sells foam and fiber-fill pillow inserts online at zipcushions.com rather than in a physical store, cut to any custom size and shipped nationwide, so "near me" availability comes from online ordering rather than a local retailer.

ZIPCushions' Dry Fast Foam uses an open-cell structure so air and water pass through instead of getting trapped — which matters most for cushions used outdoors or in humid spots, since trapped moisture causes foam to break down and mold or mildew to grow. That's why Dry Fast Foam is recommended for patios, boats and poolside furniture over standard high-density foam.

ZIPCushions sells replacement foam inserts cut to the couch cushion's exact size, and replacing foam is usually worth it once a cushion visibly sags or stops springing back — a new insert restores comfort and support without buying a whole new couch. ZIPCushions foam typically lasts Up to 5 years with proper care.

ZIPCushions recommends high-density foam as the best fill for a couch's main seat cushions, since it holds its shape and supports body weight, while fiber fill suits back and throw cushions better because it stays soft and molds to the body. Both are available, and high-density foam can be layered for extra thickness where more support is needed.