How to Fit Blackout Blinds in a Campervan

A blackout blind that leaves a 10 mm gap around the edge can be enough to wake you at sunrise, show the van is occupied, or make a summer campsite feel far less private. Knowing how to fit blackout blinds properly is less about the blind itself and more about measuring the finished aperture, choosing the right fixing method and allowing for the van body to move.

For a campervan, blackout blinds need to do more than block daylight. They should give privacy when parked, reduce glare, sit clear of opening windows and doors, and remain secure over rough roads. The best fitting method depends on whether you are installing cassette blinds, roller blinds, pleated blinds or a removable insulated screen.

Plan the blind around the finished interior

Fit blinds after the window, insulation and primary wall or door lining are complete. Installing them earlier often creates trouble later, particularly if you add ply lining, carpet, trim panels or overhead cupboards that reduce the usable space around the glass.

Start by deciding whether the blind will mount to the vehicle body, a timber lining frame, or the window surround. A solid, flat mounting surface is essential. Thin unsupported ply flexes, while self-tapping into bare metal can cause rattles, damage paintwork and leave a route for moisture if the hole is not protected.

On side windows, check the path of sliding doors and any curtain track, furniture edge or roof locker that could foul the blind. For rear doors, allow for the door seal, hinges and the gap between the two doors. A blind that fits perfectly while the doors are open may catch or buckle when they close.

Before ordering or drilling, hold a piece of cardboard in the proposed position. Open every door, window and cupboard nearby. Sit in the bed position and check the coverage from inside. This simple test usually reveals clearance issues before they become permanent.

Choose a blackout blind system that suits the window

A cassette blind is a practical permanent option for many campervans. The blind rolls into a top cassette and usually runs in side rails, which helps control light at the edges and stops the fabric swinging while driving. It is particularly useful on fixed side windows and rear windows where a neat, repeatable fit matters.

Roller blinds can work well where there is a flat, strong upper fixing point and enough depth for the roll. They are simple, but side light gaps are more likely unless you add tracks or overlap the blind onto the surrounding lining. They also need a secure bottom restraint so they do not knock against the glass in transit.

Pleated blinds take up less space when open and are common in motorhome-style installations. They can be a good choice where headroom is limited, but the guides and tension cords need accurate alignment. If the two sides are not level, the blind will pull unevenly and may not stay in position.

Removable thermal screens fixed with suction cups, magnets or press studs offer a different approach. They are useful for windscreen and cab windows, where shaped glass and dashboard contours make permanent blinds awkward. Properly made insulated screens also provide more thermal benefit than a single-layer blind. Their trade-off is storage space when not in use and the need to fit and remove them each evening.

For sleeping areas, complete coverage matters more than a particular mechanism. A slightly wider blind with suitable overlap is generally more effective than one cut exactly to the visible glass size.

How to measure for blackout blinds

Measure each window individually. Even matching windows on opposite sides of a van can differ once trim, lining and furniture are fitted. Use a steel tape measure and record width and height in millimetres.

For an inside-recess fit, measure the narrowest width and shortest height in three places: top, middle and bottom for width; left, centre and right for height. Use the smallest figure. This prevents the blind or rails binding where the aperture narrows slightly.

For a face-fixed blind, measure the area you need to cover rather than the glass alone. Include enough overlap onto a flat surrounding surface to reduce light bleed. The amount depends on the blind design and available lining, but an even overlap around the window is preferable to a large overlap on one side and none on the other.

Check the manufacturer’s stated dimensions carefully. Some measurements refer to fabric width, while others refer to the full cassette, brackets or guide rails. A blind advertised at 600 mm wide may occupy more than 600 mm once its hardware is included.

Mark the centre line of the window and the centre of the blind position before installing. Working from centre marks prevents the finished blind looking noticeably off-set, especially on a rear door or large side panel.

Prepare secure fixing points

The right fixing method depends on what sits behind the lining. If you are fixing through carpeted ply into a timber batten, pre-drill a pilot hole and use screws long enough to gain a proper bite without reaching the outer skin. Where possible, position battens during the lining stage with future blinds, cupboards and accessories in mind.

If a bracket must mount to sheet metal, check behind the panel first. Avoid wiring looms, window frames, structural reinforcements, door mechanisms and airbags. Use a centre punch to prevent the drill bit wandering, drill only to the required depth, then treat exposed metal with a suitable primer or rust-protection product before fitting the screw or rivnut.

Rivnuts can provide a strong removable threaded fixing in metalwork, but only if installed in sound material with the correct grip range. They are not a cure for a flimsy panel. For lighter blinds, well-fitted screws into a prepared timber frame are often the simpler and quieter solution.

Adhesive brackets may suit very light temporary blinds, but heat, condensation and textured trim make them less dependable in a campervan. Do not rely on adhesive alone for a blind that could fall while driving or obstruct a door mechanism.

Fit the cassette, rails or brackets

Offer the cassette or upper brackets into place using your centre marks. Use a spirit level or laser level, not the visual line of the roof or window rubber. Van panels are rarely perfectly square, and following them can leave the blind visibly crooked.

Mark the hole positions, drill pilot holes, then fit the upper brackets or cassette loosely at first. Check the blind can be removed and re-fitted as intended before tightening everything fully. If your system has side rails, install one rail first and pull the blind down to establish the true position of the second rail. This is more reliable than measuring each rail independently from an uneven window edge.

Keep the rails parallel and avoid overtightening screws. Pulling a plastic rail out of shape can make the blind run stiffly. With tensioned or pleated systems, follow the supplied cord-routing arrangement exactly and set tension gradually. Too little tension allows sagging; too much can distort the frame or make operation difficult.

For magnetic or press-stud thermal screens, clean and degrease the fixing surface before marking positions. Fit the screen centrally, then work outwards so the edges sit evenly against the trim. Test it with doors closed, as compression from door seals can change the fit.

Test the installation before calling it finished

Operate the blind repeatedly from fully open to fully closed. It should travel without snagging, creasing or pulling away from its fixings. Check it after a short drive as well. Road vibration often identifies a loose rail, a rattling bottom bar or a screw that has not gripped sufficiently.

Wait until dark and inspect the edges from outside the van. Small strips of light are common around blinds fitted to curved panels, but large gaps are usually fixable by repositioning a rail, adding a modest overlap or using a separate magnetic edge flap. Do not add foam, tape or bulky seals where they will prevent doors from closing correctly or hold moisture against the lining.

Also check ventilation. Blackout blinds should not lead to every vent and window being sealed overnight. Condensation is a normal campervan issue when people sleep inside, particularly in colder weather. Maintain safe ventilation and use insulated screens as part of a wider approach that includes sound insulation, thermal insulation and controlled airflow.

A well-fitted blackout blind makes the sleeping area feel finished without adding much weight or complexity. Take the extra time to prepare solid fixings and test every moving part, and it will stay quiet, dark and dependable long after the first few trips.