Fit a roller blind outside the window recess on a timber stud wall

Fit a roller blind above your window, checking your wall type and hidden services before drilling, then fix brackets safely and test it.

RB-01Prepare and measure the recessMeasure the width of the window recess and decide how far outside it the blind should sit, usually 50-100mm past the frame on each side so it blocks light properly. Check the roller blind kit has two brackets, the roller tube, end caps and a chain or cordless mechanism, and confirm the blind width matches your measurement. Lay a dust sheet under the window and get your tools ready: drill, screwdriver, spirit level, tape measure, pencil and a cable/pipe detector.

1 each · Roller blind kit (outside recess, correct width)

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1 each · Dust sheet

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RB-02Work out what's behind the wallRun a stud detector or a magnet across the wall above the recess; a regular line of hits or magnet pulls every 400-600mm shows timber or metal studs, with a hollow sound between them confirming a stud wall rather than solid masonry. Drill a small 3mm pilot hole in an inconspicuous spot within your fixing area: fine pale dust means timber, grey dust followed by a solid stop within 15-20mm means dot-and-dab over brick, and bright metal swarf means a metal stud. If the wall sounds and feels solid all over, it's solid brick or block; if it has a slight give and faint horizontal ridges under the paint, you likely have lath and plaster.

1 each · 3mm drill bit (pilot hole)

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RB-03Mark and level the bracket positionsHold one bracket in place and mark through its fixing holes with a pencil. Use a spirit level to mark the second bracket at exactly the same height rather than measuring down from the ceiling, which is rarely level. Check your marks line up with the solid fixing point you found in the last step, such as the centre of a stud.

RB-04Check for cables and pipes before you drillCables and pipes can run almost anywhere behind a wall, not just in the usual zones, and a metal stud frame can confuse a cheap detector further, so sweep the marked area but still assume something could be there. Before drilling, find your stopcock (usually under the kitchen sink) and check it turns, so you can shut the water off fast if you hit a pipe. If you have any doubt about what's behind a mark, isolate the relevant circuit at the consumer unit before drilling, and turn off the water at the stopcock before cutting into anything that could carry it.

RB-05Fix the brackets to your wall typeSolid brick or block: drill a 6mm hole to 40mm depth, insert a matching wall plug, and drive in a 40mm screw. Plasterboard on timber studs: drive a 40mm wood screw straight into the centre of the stud, no plug needed. Plasterboard on metal studs: use a self-drilling metal-stud fixing or a toggle-type hollow-wall anchor rated for the blind's weight, never a plain plastic plug or an ordinary wood screw, which will strip straight through 0.5mm steel. If there's no stud behind your mark, use a hollow-wall toggle rated for at least 5kg per bracket, or better, shift the bracket to line up with a stud. Dot-and-dab plasterboard: use a long fixing (60-75mm) that passes through the board and the adhesive dabs to grip the solid masonry behind, not just the plasterboard face. Lath and plaster: find the timber stud behind the laths as before, then use a 40mm wood screw into its centre, and avoid fixing into the laths alone as they crack and pull free.

4 each · Wall plugs (masonry)

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4 each · 40mm wood screws

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4 each · Metal-stud self-drilling fixings

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4 each · Hollow-wall toggle fixings (rated 5kg+)

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4 each · Long fixings for dot-and-dab (60-75mm)

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RB-06Fit the blind and test itLift the roller tube into the mounted brackets, clicking the pin end into the fixed bracket and the chain or idle end into the other. Pull the chain or rotate the tube fully up and down to check it runs smoothly and hangs level. Fit the child-safety cleat or breakaway device from the kit to the wall or window frame at least 1500mm above floor level, out of reach of young children.

RULES

1 each · Child-safety cleat (from kit, if not supplied)

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KNOW THE RULES

UK safety rules (BS EN 13120) require corded and chain blinds sold for domestic use to have a child-safety device, and the cleat or breakaway must be fitted out of reach of young children.

RB-07Tidy upVacuum any drilling dust off the windowsill and floor, and fold away the dust sheet. Check every fixing is tight and that the brackets don't flex when you pull the blind down. Dispose of packaging responsibly and keep any spare fixings in case you need to remove and refit the blind later.

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