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The Cutting Table · a common question

How firm is the foam? I want a bench seat I don't sink into.

Also asked as:How firm will this cushion be?I need it very firm and not soft.

Firm is a number, not an adjective. Here is the number behind these bench cushions, partner, and how to order a firm seat that stays smooth.

Answered by

The Pattern Engineer of Detroit · · Updated

The quick answer

Very firm: the bench cushions use high-density foam of about 2.0 lb/ft³ (32 kg/m³), which supports you without sinking and holds its shape over time. The same foam goes into every cushion. For a firm, clean seat, high-density cold foam stays stable, doesn't wrinkle or sag, and can be made completely smooth, with no quilting or buttons.

Long cream bouclé bench pad on a painted window bench with sage, caramel and dusty blue square pads stacked on topSave
One long cream pad for sitting, three square bouclé pads for color: a flexible set for a Scandinavian window.

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Key facts

  • Seat foam is high-density foam of about 2.0 lb/ft³ (32 kg/m³).
  • The workshop describes it as very firm and supportive, not soft.
  • The same 32-density foam goes into all the cushions, because it is durable and keeps its shape.
  • High-density cold foam is the recommendation for a firm seat you don't sink into.
  • Cold foam stays stable and doesn't wrinkle or sag.
  • A smooth finish with no quilting or buttons is available.
  • Two velvet seat pads forming an L were quoted at 3–5 working days of production.

Have it made

Have Nate’s workshop cut this for you

Every edge and both diagonals, to the nearest 1/4 in. If the numbers do not close, the workshop will say so on the call. — Nate

Leave your details and the workshop will call you to confirm measurements, fabric, foam and piping. No prices, dates or payment on this page: it is a request, not an order.

Fabric · Foam · Pipingwhat the workshop will confirm with you

Fabric
Two velvet seat pads forming an L were quoted at 3–5 working days of production.
Foam
Seat foam is high-density foam of about 2.0 lb/ft³ (32 kg/m³).
Piping
The corded seam edge: matching, contrast or none.
Only for this request: no marketing calls or texts. Outside the US, add the country code.
In inches: length × depth × thickness, plus any angles or cut corners.

* Required. A member of the workshop team will call you to talk it through; nothing is charged and nothing is made until you have agreed on every detail with them.

We use these details only to answer this request and make your cushion: your name and contact details, the cushion details and photos you send, the page you came from and the ad or link that brought you, if any. The workshop that makes the cushions receives them. We don't sell them or share them for advertising, and we delete requests after 24 months. Privacy notice for requests.

Nothing is made or charged until you approve the details.

Want to pick the shape and add photos? Use the full quote form

What 32 means once you sit down

Density is how much foam is packed into a cubic foot. At about 2.0 lb/ft³ (32 kg/m³) there is a lot of material pushing back, so you sit on the cushion, not in it.

The same foam goes into every cushion, from a bench cushion to an L-shaped seat, because it lasts. One foam, one predictable result. Engineers like that. The density vs firmness pattern has the numbers side by side.

A real project

Two velvet pads, one L, no buttons

A buyer got in touch wanting a firm seat they would not sink into, with no quilting or tufting: two velvet seat pads meeting in an L, 47 x 23.5 in (120 x 60 cm) and 51 x 23.5 in (130 x 60 cm).

The workshop recommended high-density cold foam. It stays stable and doesn't wrinkle or sag, so both pads could be completely smooth. They were quoted at 3–5 working days of production.

Writing a firm, smooth seat into your order

  • Name the thickness. Firm foam keeps whatever height you choose; the seat height calculator helps.
  • Ask for a plain finish. Firm cold foam holds its shape without buttons.
  • Skip the firmer upgrade. Every cushion already gets the same 32-density foam.
  • Give it a few days. Compressed foam can take up to a week to fully expand after unboxing.

High-density cold foam stays stable and doesn't wrinkle or sag, so a firm bench cushion can be made completely smooth, with no buttons.

Nate Kowalski
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Buyer questions

  1. A common question

    How firm is the cushion? I need it very firm, not soft.

    The workshop's answer

    Very firm. The workshop uses high-density foam of about 2.0 lb/ft³ (32 kg/m³), supportive and definitely not soft. The same foam goes into all its cushions because it is durable and keeps its shape.

  2. A common question

    I want a firm seat I don't sink into, with a clean look and no tufting. Which foam?

    The workshop's answer

    High-density cold foam. It stays stable, keeps its shape and doesn't wrinkle or sag, and the cushions can be made completely smooth, with no quilting or buttons.

  3. A common question

    One cushion still looks flatter than the others after unboxing. Is it faulty?

    The workshop's answer

    Wait: compressed foam can take up to a week to fully expand. Take the cover off, shake and stretch the foam. If it is still flat after several days, send photos for replacement foam.

Questions buyers ask next

Is high-density foam the same thing as firm foam?

Not quite. Density is how much foam fills a cubic foot; firmness is how hard it pushes back. This 32-density foam is both: dense enough to keep its shape, firm enough that you sit on it.

Can a firm cushion be made without buttons or tufting?

Yes. High-density cold foam stays stable on its own, so the cushion can be made completely smooth and still won't wrinkle or sag.

Is there a foam softer than 32-density?

Yes. The floor sofa uses a medium-hard 28-density foam that is comfortable to sit and sleep on, keeps its shape for years and softens slightly with use.