---
title: "Built-In Reading Nook Cushions: Platforms, Alcoves, Real Sizes"
url: "https://cushionguide.com/concepts/built-in-reading-nook-cushions/"
section: "Concept Sketches"
author: "Rosa Delgado, The Porch Keeper of Savannah"
author_url: "https://cushionguide.com/masters/rosa/"
published: "2026-02-05"
updated: "2026-09-24"
keywords: "reading nook cushion, built-in reading nook cushion, window seat reading nook cushion, reading nook backrest, wedge backrest cushion, notched window seat cushion, floor cushion for alcove"
---

# Built-in reading nook cushions: the seat everybody fights over

*Every porch I grew up on had one chair the whole family squabbled over. These days it's the reading nook. Here are nine real built-ins from past orders, and what each taught us about measuring, thickness and the back.*

> **The quick answer:** A built-in reading nook cushion is made to the finished nook: measure width, depth and back-wall height after the shelves are built, then choose 4 in (10 cm) for sitting or 8 in (20 cm) for lounging. The back can be firm foam, a soft filled pillow or a wedge, in the seat fabric. Notched corners, angled ends and table gaps are routine with a drawing.

![Blush pink and cream striped window seat cushion on honey oak with cream pillows, a fringed throw and pink peonies](https://cushionguide.com/media/window-seat-cushions/blush-stripe-window-seat-oak-bedroom-nook-1600.webp "Soft blush stripes pick up the peonies on the sill, while honey oak paneling keeps the pink from turning sugary.")

## A reading nook is a bed you sit up in

A reading nook is a bed you sit up in, and nobody plans it that way. You build a seat, and by Sunday afternoon somebody is stretched out on it with their shoes off and the dog across their shins.

So a [reading nook cushion](https://cushionguide.com/cushions/reading-nook-cushions/) has two jobs. It has to sit like a [window seat](https://cushionguide.com/cushions/window-seat-cushions/) and lounge like a daybed. The nook questions keep circling back to three things: when to measure, how thick to go, and what to lean on.

The nine nooks below are real, most from buyers in the US. The sizes are theirs, kept exactly. What does your nook measure, neighbor, wall to wall and floor to shelf?

## Nine nooks, tape measure in hand

### 01. The bookshelf wall that wasn't built yet

![Mustard corduroy box cushion on a white window seat in a narrow teal nook with oak shelving and a rooftop view](https://cushionguide.com/media/window-seat-cushions/mustard-corduroy-window-seat-teal-nook-rooftops-1600.webp "Mustard against teal is a bold warm-cool pairing that makes a tiny upstairs nook feel like a destination.")

A buyer in the US wanted a seat, a back and two side pillows for a nook whose bookshelf wall was still on paper. The workshop asked for measurements first: 51 in wide, 37 in deep (130 x 94 cm), with a 21 in (53 cm) back wall. It quoted the set at 4 in and at 8 in thick.

**The takeaway:** Order after the last shelf upright is in, and measure the finished opening.

> **Tailor's margin:** Measure a reading nook cushion after the bookshelf wall is built, never from the plans.

### 02. A platform seat with a hard width limit

![Burgundy wine window seat cushion with light gray piping, gray herringbone pillow and charcoal knit throw by a tall window](https://cushionguide.com/media/window-seat-cushions/burgundy-window-seat-cushion-light-gray-piping-1536.webp "A wine-red window seat set against soft gray walls, finished with pale gray piping, a herringbone pillow and a chunky knit throw.")

A buyer in the US wanted a velvet floor cushion about 48 x 42 in (122 x 107 cm) for a raised platform nook, a back the same length and two very firm bolsters to lean on. The seat could be no wider than 43 in (109 cm). We were slow to reply that week, and the buyer ordered elsewhere.

**The takeaway:** Write the limit as a limit, and check that the quote repeats it.

> **Tailor's margin:** On a platform nook, state the maximum width, like 43 in, and check the quote repeats that number.

### 03. A floor alcove 98 inches long

![Ivory corduroy window seat cushion on a white bench with cream knit and oatmeal pillows under linen curtains](https://cushionguide.com/media/window-seat-cushions/ivory-corduroy-window-seat-tonal-cream-nook-1600.webp "Cream on cream works here because every layer has a different texture: ribbed cord, cable knit, slubby weave and linen.")

An interior designer in the US wanted one bottom cushion for a floor-level alcove, with bolsters around the sides: first 72 x 40 in, then 98 x 40 in (249 x 102 cm), 8 to 10 in (20 to 25 cm) thick. A cushion that long ships in two pieces, so the split had to be planned with the client.

**The takeaway:** Decide where the seam falls before ordering; a bolster laid over it hides it.

> **Tailor's margin:** A 98 x 40 in floor cushion ships in two pieces; plan the seam to sit under a bolster.

### 04. An angled nook in six numbers

![Light gray linen-look window seat cushion with navy contrast piping, two wedge backrests and pillows on a white storage bench](https://cushionguide.com/media/window-seat-cushions/light-gray-window-seat-cushion-navy-piping-backrests-1600.webp "Navy piping outlines every edge of the pale gray set, so seat, backs and pillows read as one tailored piece.")

A buyer in the US sent an angled nook as six numbers: A 6, B 6, C 68, D 34, E 23 and F 23 in, 22 in (56 cm) deep in the middle. The 4 in (10 cm) linen cushion with matching piping got a pillow-filled backrest and four 18 in (46 cm) square pillows. It fit perfectly; the plump pillows measured just under 16 in (41 cm).

**The takeaway:** A pillow's size is the cut fabric, so ask about the stuffed size if it must fill a gap.

> **Tailor's margin:** An 18 in square pillow is cut at 18 in; stuffed plump, the pillow measured just under 16 in.

### 05. A nook with a table built into the run

![Cream window seat cushion with brown diamond lattice pattern on a plaster built-in with oak ledge, sheer linen curtains](https://cushionguide.com/media/window-seat-cushions/cream-diamond-lattice-cushion-plaster-window-nook-1600.webp "A cream cushion with a cocoa diamond lattice suits a plastered built-in window seat. Olive branches and linen keep it light.")

A family in the US measured their nook at 41.5 x 95 in (105 x 241 cm), but the 95 in included a wooden table section built into the bench. They wanted a 6 in (15 cm) seat in a gray linen-look and asked for the seat and backrest priced separately.

**The takeaway:** Measure each run up to the table, and get seat and back quoted as separate lines.

> **Tailor's margin:** If a table sits inside the nook, measure each cushion run to the table, not the whole 95 in wall.

### 06. Four notched corners on a DIY build

![Close-up of a periwinkle and cream striped window seat cushion showing self piping and a matched box edge](https://cushionguide.com/media/window-seat-cushions/periwinkle-stripe-window-seat-cushion-closeup-1600.webp "From above, the stripes line up across the top and down the gusset, with self piping carried round the corner.")

A couple in the US building their own nook needed an 82 x 36 in (208 x 91 cm) cushion with a 5 x 2 in (13 x 5 cm) notch at each corner, in mushroom taupe velvet. They sent a hand drawing; the workshop redrew it in centimeters for their approval and set the thickness at 5 in (12.7 cm).

**The takeaway:** Check the maker's redrawn version line by line before you approve it.

> **Tailor's margin:** Corner notches of 5 x 2 in are routine on a nook cushion; approve the maker's redrawn drawing first.

### 07. The stripe we couldn't weave

![Elevated view of a navy corduroy cushion on a pine window seat with rattan pendant, ficus and a mustard rug in sunlight](https://cushionguide.com/media/window-seat-cushions/navy-corduroy-window-seat-overhead-sunlit-nook-1600.webp "From above you can see how the cushion covers the whole seat top, with the pine paneling showing only on the front face.")

A buyer in the US wanted a forest green window-seat cushion with thin cream and camel stripes woven in. The workshop sews cushions; it doesn't weave cloth. She chose catalog linens instead, forest green with mustard, at 78.75 x 15.5 x 3 in (200 x 39 x 7.5 cm), typing the exact size in the personalization note.

**The takeaway:** Fall in love inside the swatch chart; custom weaving is a mill's job.

> **Tailor's margin:** If a stripe isn't on the fabric chart, a cushion maker can't weave it; pick the nearest chart stripe instead.

### 08. A wedge to lean on in a deep seat

![Blush pink window seat cushion with burgundy piping, wedge end backrests and two pillows above cream shaker cabinets](https://cushionguide.com/media/window-seat-cushions/blush-pink-window-seat-cushion-burgundy-piping-1600.webp "Burgundy piping gives a soft blush fabric a crisp edge and keeps it from looking too sweet.")

A buyer wrote to the workshop with a marked-up photo: a seat about 36.6 x 25.6 x 2.75 in (93 x 65 x 7 cm) and a wedge backrest 25.6 in wide, 27.6 in (70 cm) tall and 7.9 in (20 cm) deep at the base, in linen with piping. The workshop quoted from that photo and confirmed 32-density foam wrapped in polyester fiber.

**The takeaway:** A marked-up photo is enough to quote from, as long as every number is on it.

> **Tailor's margin:** A wedge backrest needs four numbers: width, height, depth at the base and thickness at the top.

### 09. A nook for small readers

![French blue and white wide stripe window seat cushion with chambray and grain-sack pillows, tray with books and mug](https://cushionguide.com/media/window-seat-cushions/french-blue-cabana-stripe-window-seat-cushion-1600.webp "Wide blue stripes give a sunny nook a seaside feel, with pillows in the same blue but different weaves.")

A parent in the US planning a nook for young children asked how to wash a tufted linen floor cushion. Tufted cushions can't go in the machine, only a gentle wipe, so the workshop offered an untufted version with removable, machine-washable covers.

**The takeaway:** In a children's nook, skip the buttons. Kids and dogs are the real quality control.

> **Tailor's margin:** For a kids' reading nook, choose an untufted cushion with a zippered cover; a tufted cushion only wipes clean.

## Four inches or eight: which nook wants which build

Sketch the seat in the [bench cushion builder](https://cushionguide.com/studio/bench-cushion-builder/) and try the [foam firmness finder](https://cushionguide.com/studio/foam-firmness-finder/) before you settle on a row.

| How the nook gets used | Seat thickness | The back | from past orders |
|---|---|---|---|
| Sitting up with a book | 4 in (10 cm), the workshop standard | Soft filled pillow back or loose pillows | Angled nook, 22 in (56 cm) deep, pillow backrest |
| Lounging, legs up, a nap now and then | 8 in (20 cm), quoted beside 4 in | Firm foam back in the seat fabric | 51 x 37 in (130 x 94 cm) nook, 21 in back wall |
| Floor-level alcove bed | 8 to 10 in (20 to 25 cm); ships in two pieces when long | Bolsters around the sides | 98 x 40 in (249 x 102 cm) alcove |
| Deep seat with nothing to lean on | About 2.75 in (7 cm) | Wedge, 27.6 in (70 cm) tall, 7.9 in (20 cm) base | 36.6 x 25.6 in (93 x 65 cm) seat |

## Foam back, pillow back, or just the wall

Most nooks start with a wall and a heap of pillows, which works until somebody wants to sit up straight for a whole chapter. Then you want a proper [backrest](https://cushionguide.com/cushions/backrest-cushions/): firm foam that stands upright and looks tailored, or a soft filled pillow that is plumper and more forgiving. A [wedge](https://cushionguide.com/glossary/#wedge-cushion) gives a deep seat something solid behind it, and the [bolster notes](https://cushionguide.com/guides/reading-nook-cushion-bolsters/) go further.

One front-step truth: a cushion cut snug to a narrow window seat has nothing to grip. Ask for a non-slip base or corner ties, and put a rug under a floor cushion on hardwood. For cloth, [velvet](https://cushionguide.com/fabrics/velvet/) and [linen](https://cushionguide.com/fabrics/linen-and-cotton-linen/) both turn up in these nine nooks.

> A reading nook cushion is measured from the finished built-in: if the bookshelf wall isn't up yet, the order waits.
>
> — Rosa

## Nook questions

**A common question:** Can you make a back cushion that matches my window-seat or bench cushion?

**The workshop's answer:** Yes. Backrests are made to any size in the same fabric as the seat, either firm foam that holds its shape upright or a softer filled pillow. One buyer added a matching back later, 90 in (229 cm) long, 11 in (28 cm) high and 3 in (7.5 cm) deep, by quoting the original fabric code.

**A common question:** How thick is a standard floor cushion, and can mine be thicker?

**The workshop's answer:** The tufted linen floor cushion is about 4 in (10 cm), and the tufted reading-nook set has a 4 in seat with about a 4 in back. The velvet floor seat is about 6 in (15 cm). Any thickness can be made to order, thinner so legs fit under a low table, or thicker.

**A common question:** My nook isn't a rectangle. Can you still make the cushion?

**The workshop's answer:** Yes, any size and shape. Measure every side, draw the shape on paper with all sizes written on it, including rounded corners and cut-outs, and send a photo of the drawing and the space. The workshop redraws it as a clean diagram for you to confirm before it quotes.

**A common question:** I want a floor cushion with backs for a corner reading nook. What do you need from me?

**The workshop's answer:** The shape and measurements, a few photos of the room taken from a distance, and a sketch if you have one, all agreed before ordering. For a curve, give the two straight sides. For backrests, say whether your numbers are wall sizes and give the floor-to-top height. Any size-based customization fee is confirmed up front.

## Questions buyers ask next

### What thickness works best for a reading nook cushion?

The workshop standard for seat and window-seat cushions is 4 in (10 cm), and most buyers keep it. For a nook where people stretch out, 8 in (20 cm) is the usual step up, and a deep floor-level alcove was specified at 8 to 10 in (20 to 25 cm).

### Should I wait for the built-in to be finished before ordering the cushion?

Yes. Measure width, depth and back-wall height from the finished built-in, not the plans. Shelf uprights, trim and a table section can all change the real cushion run, and the cushion is cut to exactly the numbers you send.

### How do I keep a nook cushion from sliding around?

A cushion cut exactly to a narrow seat has little to grip. Ask for a non-slip base, or fabric ties sewn into the seams at the corners or back. On hard floors, put a rug or grip mat under a floor cushion. The [sliding fixes](https://cushionguide.com/guides/stop-bench-cushion-sliding-ties-nonslip/) cover more.

### Can a reading nook cushion have notched corners or an angled end?

Yes. Notches, angled ends and trapezoid shapes are routine when you send a drawing with every side measured. One DIY nook had a 5 x 2 in (13 x 5 cm) notch at all four corners of an 82 x 36 in (208 x 91 cm) cushion.

## Related at the atelier

- [Window Seat Cushion in Pinstripe Linen with a Pink Bolster](https://cushionguide.com/readings/pinstripe-bedroom-window-seat-cushion-pink-bolster/): A bedroom window seat cushion should be only as deep as the seat allows once window handles, latches and trim are counted; one buyer cut a 21 in (53 cm) depth to 16 in (41 cm) so the handle would…
- [Window Seat Cushion for Long Sitting: Charcoal Chalk Stripe](https://cushionguide.com/readings/charcoal-chalk-stripe-window-seat-blush-alcove/): A window seat cushion for long sitting needs a firm box cushion that fills the whole seat, pillows stepped for back support, and a spot for a cup.
- [Window Seat Cushion in Ivory Velvet Over Built-In Drawers](https://cushionguide.com/readings/ivory-velvet-window-seat-cushion-built-in-drawers/): An indoor window seat cushion should borrow two habits from outdoor cushions: plan for sun, and plan to take the cover off.
- [Notches and cut-outs: window seat cushions around posts, casings and units](https://cushionguide.com/concepts/notched-window-seat-cushions/): A notched window seat cushion is cut from a drawing that gives each notch its width, depth and distance from both ends, ordered through the custom-shape listing.
- [Custom cushions for Swedish summer cottages, apartments and boats](https://cushionguide.com/places/custom-cushions-sweden/): Custom cushions in Sweden mostly serve three places: the apartment window seat through dark winters, the summer cottage that stays closed through the cold months, and the archipelago dock or boat.
- [Window seat cushions for Danish nooks, summer houses and apartments](https://cushionguide.com/places/custom-cushions-denmark/): Window seat cushions in Denmark mostly serve the hyggekrog, the cozy nook by a window, plus apartment balconies and wooden summer houses.
- [Reading nook bolsters, back pillows and a seat depth that invites a nap](https://cushionguide.com/guides/reading-nook-cushion-bolsters/)
- [Window seat cushion thickness compared: 2, 3, 4 and 5 inches](https://cushionguide.com/guides/window-seat-cushion-thickness/)

*Porch light's on — Rosa*

---

Written by Rosa Delgado (https://cushionguide.com/masters/rosa/) for CushionGuide (https://cushionguide.com/about/). The site explains made-to-measure cushions and the partner workshop makes them; measurements are in inches first. This Markdown mirrors the page at https://cushionguide.com/concepts/built-in-reading-nook-cushions/