Oscar Evo-Blade

Oscar Evo-Blade

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The ultimate infinity razor edge trim for elegant, slim line acoustic & conventional plaster ceiling edges
Knife edge trim available to purchase through our office

Contact us to purchase Evo-Blades directly

Knife edge trim

  •   Does not crack ceilings along the back edge of the trim like other profiles

  •   Knife edge trim designed to work with acoustic & non-acoustic products for a lasting finish

  •   Shallower angle means it is invisible from further back than other systems

  •   Multiple aligning slots for straight runs and perfect corners

  •   Doesn’t restrict to use of a particular lighting system

The Oscar Evo-Blade is a patented infinity edge profile.  This is also sometimes known as a knife edge trim, razor edge profile, plasterboard edge blade, plasterboard arrow trim or floating ceiling blade trim.  These knife edge trims are designed to give bulky ceilings an elegant slim line effect and can also be used to create sharp recessed lighting channels.  Gone are the days of having a thick vertical multi-layer ceiling edge.

Until now, there has been an issue with this sort of infinity razor trim.  Most drylining companies would only install them with a letter to say that they will crack along the back edge.  It is also not possible to use them with acoustic plaster systems without causing long term discolouration and cracking.

The Oscar Evo-Blade knife edge trim was developed by Oscar Acoustics following a meeting where an architect and contractor had specified a razor trim for use in a standard plaster and acoustic plaster ceiling.  The drylining company said it would crack their plaster and Oscar Acoustics knew the cracking and air filtration issues it would cause to any acoustic plaster.  The Evo-Blade infinity razor edge trim is designed to prevent these problems by uniquely enabling the installer to position the plasterboard in different places to accommodate different depth finishes.  As a result, it is perfect for both conventional plaster and Oscar Acoustics spray applied acoustic decorative finishes.

Why would an acoustic product discolour with a conventional razor trim?

All acoustic finishes are inherently air porous due to the fact they need to absorb sound.  This means that when a room’s air pressure increases due to a door or window opening or closing, a gust of wind through an open aperture or a ventilation system starting up, air will be forced into an acoustic product which over time will filter out any dust in the air.  This is not normally a problem, but when most of the acoustic ceiling is for example - 27mm thick and the part over the infinity razor trim is only 2mm thick, the air movement rates will be different, meaning one will change colour compared to the other over time.  This can take years but in extreme case can take weeks.


The Evo-Blade inifinity razor edge trim is specifically designed to work perfectly with acoustic and conventional plasters for a lasting quality finish.  A shallower angle also means it remains invisible from further back than other systems, adding to the infinity razor edge illusion and creating dramatic transitions between ceiling heights, recessed lighting channels and feature light rafts.  The knife edge trim assists in minimising unwanted shadows and reflections when being used as part of a feature light channel or feature lit ceiling edge.

Whilst most other knife edge razor trims on the market have been cleverly designed by lighting manufacturers to work with their own lighting systems, which are often relatively expensive and incompatible with others, Evo-Blade works with almost any inexpensive off the shelf lighting strip.



Oscar Evo-Blade - other names

Knife edge trim, Razor edge trim, razor edge profile, plasterboard edge profile, plasterboard edge blade, plasterboard blade trim, plasterboard arrow trim, floating ceiling edge profile, floating ceiling edge blade, floating ceiling blade trim, floating ceiling arrow trim, infinity edge profile, infinity edge trim.

Contact us

For more information regarding our Oscar Evo-Blade knife edge trim or if you have any questions regarding building acoustics you can call us direct on 01474 854902 or fill in our contact us form and a member of our friendly team will get back to you as soon as possible.

Speak to an Evo-Blade expert

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