What Is INVI CavKit and How Does It Deliver a Flush Finish Pocket Door?

What Is INVI CavKit and How Does It Deliver a Flush Finish Pocket Door?

INVI CavKit is a flush finish trim kit that converts an existing sliding door opening into an architrave-free pocket door. It trims and caps the plasterboard edges around the door penetration, creating a square-set finish with no visible architrave. CavKit is constructed from zinc annealed cold-formed steel and is available in standard and custom sizing to suit different wall thicknesses and door widths.

What Is a Pocket Door?

A pocket door is a sliding door that disappears into a cavity built into the wall when open. Unlike a standard hinged door, it requires no clearance arc and takes up no floor or wall space when in use.

When closed, it functions as a normal internal door, providing privacy and acoustic separation depending on the hardware specified. When open, it is completely invisible, leaving an unobstructed opening between spaces.

Common applications in UK homes include:

  • Between kitchens and living areas in open-plan layouts
  • Bathroom and en suite doors where swing space is limited
  • Bedroom and wardrobe openings
  • Home offices, studies, and snugs
  • Separating zones in commercial and hospitality interiors

Section summary: A pocket door slides into the wall cavity when open, removing the need for a door swing arc and creating fluidity between rooms.

What Is INVI CavKit?

INVI CavKit is a flush finish trim kit designed to convert an existing sliding door opening into a clean, architrave-free feature. Where the wall cavity and sliding gear are already in place, CavKit trims and caps the plasterboard edges around the door penetration to create a square-set finish around the perimeter of the opening, with no visible architrave on any side.

For openings where the track is already positioned so its underside sits flush with the ceiling, CavKit finishes the surrounding trim to match, creating a continuous flow from one room to the next.

CavKit is the ideal solution for:

  • Renovations where a sliding door is already installed but the finish is poor
  • Projects where the cavity frame is in place but no flush trim has been fitted
  • Upgrading an existing pocket door opening to a contemporary architrave-free detail

Section summary: INVI CavKit is a zinc annealed cold-formed steel trim kit that finishes an existing sliding door opening to a flush, architrave-free standard.

Where Are Pocket Doors Most Effective in UK Homes?

Pocket doors are particularly effective in UK properties where space is at a premium. A standard hinged door requires a clear arc of around 750mm to 900mm. In a bathroom, narrow hallway, or galley kitchen, this arc often conflicts with adjacent furniture, fittings, or walls.

Replacing a hinged door with a pocket door in these locations recovers that floor space entirely. Beyond space saving, pocket doors also offer:

  • Better circulation: open-plan layouts can be divided and opened up without fixed door positions interrupting flow
  • Cleaner sightlines: a door hidden in the wall does not interrupt the visual line of a corridor, kitchen, or living space
  • Improved accessibility: pocket doors are easier to use for people with limited mobility
  • Acoustic flexibility: close rooms off when needed, open them fully when not

Section summary: Pocket doors recover floor space and improve circulation, sightlines, and accessibility in space-constrained UK properties.

What Hardware Works With INVI CavKit?

Hardware selection completes the flush finish. Visible recessed pulls or protruding handles work against the clean aesthetic of the system.

INVI Hardware includes options designed to suit pocket door applications:

  • NoHa invisible handles: recessed into the door face with no projecting lever, maintaining a flat surface on both sides

Hardware should be selected as part of the pocket door specification, not added as an afterthought during second fix.

Section summary: NoHa invisible handles complete the flush finish and should be specified alongside CavKit, not added later.

How Do You Specify an INVI CavKit Installation?

For most UK residential projects, the specification process involves confirming:

  • Door width and height
  • Wall thickness
  • Existing track and cavity condition
  • Hardware requirements

CavKit can be ordered through INVI Concept’s quote request service. The team can advise on sizing, wall build-up requirements, and compatible hardware for the project.

Section summary: CavKit specification confirms door size, wall thickness, existing cavity condition, and hardware, and can be ordered directly through INVI Concept.

Where Can You Specify INVI CavKit?

Request a quote, confirm sizing, and review compatible hardware at inviconcept.com. The team can advise on wall build-up requirements for your specific renovation.

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