Shelving Units for Book Lovers: What to Look For

If you own a lot of books, a shelving unit has to work harder than almost any other piece of furniture in the house. The short answer is this: look for thick, well supported shelves that will not bow, adjustable shelf heights so paperbacks and large hardbacks can live together, a depth that matches the books you actually own, and a frame sturdy enough to be fixed securely to the wall. Get those four things right and the style becomes a matter of taste rather than a compromise.

The rest of this guide explains each point in more detail, with practical notes for the way UK homes are built and used. If you would like to see how different designs handle these demands, our collection of modern bookcases UK homes can choose from covers tall, low, open and glazed styles, and it is a useful place to compare proportions side by side.

Start with the weight of your collection

Books are heavy in a way that surprises people. A single shelf of hardbacks can weigh as much as a small child, and a full unit can carry several times that. Before you think about colour or finish, picture the shelves loaded end to end, because that is how a book lover’s shelving usually ends up within a year or two.

This is also why shelving sold mainly for display can disappoint when it is filled with novels. A unit designed to hold a few vases and a plant may have thin shelves and light fixings that are fine for ornaments but not for a dense row of reference books. When you browse living room furniture UK sale ranges, read the product details for shelf material and construction rather than relying on photographs, which are almost always styled lightly.

Shelf thickness and span

The two factors that decide whether a shelf stays straight are its thickness and its span, meaning the unsupported distance between uprights. A thick shelf over a short span will stay flat for years. A thin shelf over a wide span will start to dip in the middle, sometimes slowly enough that you only notice when a book will no longer stand upright.

As a general rule, narrower bays are kinder to books. A unit divided into several columns will usually outperform one with a single wide shelf, even if both look similar from across the room. Solid wood and good quality engineered boards both work well when the span is sensible. If you love the look of a long, uninterrupted shelf, check that it has a central support or a fixed back panel that helps it resist sagging.

Fixed shelves, which are glued or screwed into the frame, also add rigidity to the whole unit. Many well made bookcases combine one or two fixed shelves with several adjustable ones, giving the frame strength while still letting you change the layout.

Depth: matching the shelf to your books

Shelf depth is easy to overlook and hard to fix later. Most paperbacks and standard hardbacks sit comfortably on a fairly shallow shelf, and a shallow unit has real advantages in a narrow UK living room or hallway because it takes less floor space and keeps spines close to the front where you can read them.

Coffee table books, atlases and art monographs are a different matter. They are often deeper as well as taller, and they can overhang a shallow shelf in a way that looks untidy and puts strain on the front edge. If your collection includes a lot of large format titles, consider a unit with one or two deeper lower shelves, or lay those books flat in stacks, which also gives the shelves a more relaxed rhythm.

Very deep shelves bring their own problem: books get pushed to the back and others creep in front of them. Unless you deliberately want to double stack, a moderate depth that suits your typical book keeps the collection visible and easier to browse.

Adjustable shelves make a collection easier to live with

A collection rarely stays one size. Adjustable shelves let you fit tall hardbacks on one level and two rows of paperbacks where a single tall shelf would waste space. They also let you change the arrangement as your reading changes, from children’s picture books to cookery titles to a run of new hardback fiction.

Look at how the adjustment works. A closely spaced series of holes gives you fine control, while widely spaced holes can leave awkward gaps above every row. Metal shelf pins are more durable than plastic ones under heavy loads. It is worth measuring the tallest books you own and checking that at least one shelf can be set high enough to take them standing upright.

Open backs, closed backs and dust

An open backed unit feels light and can work beautifully as a room divider, letting light pass through. For a large book collection, though, a closed back usually makes more sense. It stops books being pushed through the back, adds stiffness to the frame and protects the wall behind from scuffs.

Dust is the other consideration. Books on open shelves gather dust along the top edges, which is part of living with them. If you have rare editions or simply prefer less cleaning, a glazed unit or a bookcase with a few doors in the lower section can protect the most valued titles while leaving the rest on show. Sunlight matters too: spines fade when shelves face a bright window for long periods, so it is worth placing shelving on a wall that does not take direct sun all day.

Stability and wall fixing

Any tall unit filled with books should be fixed to the wall. A fully loaded bookcase is top heavy and can tip if someone pulls on a shelf or a child climbs it. Most good quality units come with an anti tip fitting, and it is sensible to use it in every home, not only those with young children.

In many UK homes the walls are plasterboard on a timber or metal frame, and fixings need to go into the studs or use suitable cavity fixings. Older solid walls take masonry plugs. If you are unsure what your walls are made of, it is worth checking before you load the shelves. Also make sure the unit sits level, because older floors are often uneven and adjustable feet help a tall bookcase stand true.

Materials and finishes that suit reading rooms

Solid wood brings warmth and ages gracefully, and its weight helps a unit feel planted. Oak and walnut finishes sit naturally with books, whose spines already add plenty of colour. Painted or white units give a cleaner backdrop and can make a dense collection look calmer, which is helpful in a small room.

Metal framed shelving with wooden shelves has an industrial character and often uses slim uprights, so it can feel less bulky. Glass shelves look elegant but are better suited to display than to heavy rows of books. If you like the idea of mixing books with ceramics and objects, our modern shelving units UK collection includes designs that balance closed storage with open shelves.

Planning for a collection that keeps growing

Book lovers tend to underestimate how quickly shelves fill. A sensible approach is to buy shelving with spare capacity, leaving roughly a shelf or two empty at the start. That space can hold a few objects for now and absorb new books later without forcing a second purchase straight away.

Another option is to choose a design that can be extended. Some ranges are made in matching widths, so a second unit can sit alongside the first and read as one wall of shelving. Alcoves either side of a chimney breast are a classic place for this in Victorian and Edwardian terraces, and two matching units there can hold a large collection without dominating the room.

Think too about where overflow goes. A low bookcase under a window, a narrow unit on a landing or a few shelves above a desk can spread a collection around the house so no single room feels overwhelmed.

Lighting the shelves

A wall of books is most enjoyable when you can read the titles in the evening. Ceiling lights tend to cast shadows across the top shelves, so a lamp angled towards the unit makes a noticeable difference. A floor lamp beside a reading chair can serve both purposes, lighting the page and the nearby shelves. Our modern floor lamps UK range includes arc and adjustable designs that work well next to a bookcase.

Warm white bulbs flatter wood and paper. Avoid placing hot bulbs close to books, and keep any integrated shelf lighting low in heat output.

Checking the details before you choose

Many of the questions that apply to display furniture also apply to bookcases, particularly around how much weight a shelf can take. Our guide to shelf load limits by thickness and span for UK homes explains why span matters so much, and our article on shelf spacing and cabinet dimensions in UK homes is useful when you are working out heights and depths.

When you have a shortlist, measure the wall, the ceiling height and the route into the room, including any tight turns on the stairs. Check whether the unit arrives assembled, and allow space in front of it to stand back and browse. At Furniture in Fashion we offer free delivery to most UK mainland postcodes, which makes it easier to plan a larger shelving project in stages.

Frequently asked questions

How do I stop bookshelves from sagging?

Choose thicker shelves, keep the span between uprights short and avoid overloading a single shelf with very heavy titles. If a shelf has already started to bow, turning it over can help, and adding a central support will prevent it getting worse.

What depth of shelf do I need for books?

A moderate depth suits most paperbacks and standard hardbacks. If you own many large art or reference books, add one or two deeper shelves at the bottom of the unit or store those titles flat.

Should a bookcase be fixed to the wall?

Yes. A tall unit full of books is top heavy, so it should always be secured with an anti tip fitting using fixings that suit your wall type.

Are glass shelves suitable for books?

Glass shelves are better for display pieces than for rows of books. For a heavy collection, wood or a quality engineered board is the more practical choice.