Need more storage? How to build sturdy shelves in your alcoves in 5 simple steps
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Richard Burr reveals top tips to help DIYers get the job done
Many older homes have chimney breasts, offering a great opportunity for storage in the alcoves.
With three kids and all the kit they come with, my shelves are often overloaded, so I need mine to be able to withstand quite a bit of weight.
Here is my 5-step guide for giving it a go yourself...
1. Measure each shelf
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Before you start, think about what will be going on the shelves. For example, if I’m building bookshelves, I’ll often make the bottom one or two shelves taller for larger books. Most houses with chimney breasts are a little older, and so the walls aren’t necessarily going to be straight, so you’ll need measurements for each individual shelf. Once you’ve decided where your shelves are going to be, use a spirit level to draw a straight line in pencil, along the back of the wall, for each shelf. If you don’t have a spirit level, there are apps you can use on your smartphone that can do the trick. Record the length of each shelf as you go. Next, measure the depth of the alcove, or how deep you want your shelves to be, bearing in mind you may put a wood fascia on the front.
2. Choose the right wood
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There are two types of wood I use to make sturdy shelves: 18mm MDF and prepared timber, 25 x 50mm. This is sometimes called PAR (planed all round) timber. You may also want to put a fascia on the front of your shelf, so you’ll need thin wood, for example 13mm x 70mm prepared timber. You’ll be using the MDF for your shelf, the 25 x 50mm prepared timber to make a frame for the shelf to sit on, and the 13mm x 70mm prepared timber for your fascia.
You’ll also need the following tools:
Panel saw (even if you’ve had your wood pre-cut, you may need to adjust it)
Drill with an 7mm masonry bit, a 5mm high-speed bit & a Phillips head screw bit
Spirit level (or app)
60-90 grade sandpaper
5 x 70mm screws
5 x 50mm screws
40mm panel pins
3. Learn how to saw properly
Most DIY stores and timber yards will cut your wood for you, charging a small amount per cut - very useful if you don’t fancy an afternoon covered in sawdust!
If you’re making two shelves, you’ll need the following materials:
4 x long pieces of 25 x 50mm prepared wood to the width of the alcove
4 x short pieces of 25 x 50mm prepared wood to the depth of the alcove, minus the depth of the front and back pieces of wood, and the fascia if you’re having one
2 x rectangular pieces of MDF to be your shelves
2 x long pieces of 13mm x 70mm prepared wood for your fascia
If you want to saw the wood yourself with a panel saw, you need to work outside, as the MDF dust will get everywhere. You need something solid to lean on while you’re doing your sawing, but if you’re using your garden table, for example, don’t saw through your wood and into what’s beneath it! A work bench is ideal and you can pick one up new for about £10.
When you’ve measured your wood and drawn your line on it, the safest way to use a panel saw is to put your thumb on the flat surface of the saw (as above) as a guide to get your cut started. This will stop the blade from wobbling about and doing you some real damage. If you’re nervous about this, work slowly and gently. Once you’ve cut through the first bit of wood, your thumb won’t need to hold the blade any more. Use the full length of the saw, forward and backwards, nice and smoothly.
4. Measure out your drill holes
If you’re building shelves in an alcove with a fireplace next to it, it’s likely to be a brick wall, so you’ll need to use your drill. Check that there are no plug sockets above or below where you’re drilling. If there are, don’t drill in the space directly above or below where your socket is.
Take your long piece of wood for the back of the frame and, with your 5mm high-speed bit, drill three holes in it - one in the middle and the others about 10cm away from each of the ends. Hold this piece of wood against the line you’ve drawn for your shelf. Put the drill back through the hole and lightly tap the trigger to make an indentation in the wall to show where you’ll need to drill.
Swap to your 7mm masonry bit and drill three holes in the wall. Insert your Rawlplugs - you may need to knock these in with a hammer to make them flush against the wall. Poke your 70mm screws through your wood, position it in place so the screws are sitting against the Rawlplugs, then screw them in with your Phillips screwdriver (or Phillips bit on your drill) until the wood is tightly fixed. If you’ve accidentally gone off level with this piece of wood, a light tap with your hammer should get it back into place. Repeat this process for the short ends, but use two holes/screws instead of three.
To put the front of your frame on, drill two holes at each end of your long wood, about 12mm in. Screw the front of the frame to the side sections, two 70mm screws at each end. Lay your cut shelf on top of this. To attach the shelf to the frame, you’re going to drill through the MDF. You’ll know when to stop as MDF is easier to drill into than wood. You need three 50mm screws down into the back piece, two 50mm screws into each side, and for added strength, five 50mm screws down into the front of the frame. Use your drill to screw these together. You will find it too awkward to drill vertically, so it’s OK to do this slightly diagonally - just make sure the screw heads sink into the surface of the shelf. Nail on your fascia to the front of your shelf using panel pins.
5. Fill in your screw holes and paint
Mix up your two-part filler on the lid of its pot and work fast, as it dries quickly. Use your scraper to cover all the screw holes on the top of the shelf and the panel pins on the fascia, leaving it a little bit proud of the flat surface, so you have something to sand off once it’s set.
Vacuum everything up, then paint your shelves with a decent primer undercoat and top coat with whatever suits your room, for example, satin, egg shell or gloss.