Fitting guide · dctuk.com · 0345 222 1544 · Flooring that ain’t boring
Interface carpet tiles
How to fit Interface carpet tiles
Interface do something clever: instead of adhesive, you get TacTiles — little square stickers that go underneath where the tile corners meet. No glue, no smell, no mess, and the floor lifts up clean if you ever move.
- Difficulty
- Easy
- Time
- 3–5 hours for a 20m² room
- People
- 1 person
- Skill level
- Beginner friendly
What you’ll need to fit Interface carpet tiles
- Interface TacTiles (or a carpet tile tackifier if you prefer)
- Sharp utility knife and spare blades
- Metal straight edge
- Tape measure and chalk line
- Knee pads
Before you start
Let them warm up
Leave the tiles in their boxes in the room for at least 24 hours at 18°C or more. Interface are particularly keen on this for their bio-based backings — cold tiles don't lie flat.
Check before you cut
Check the quantity and the dye batch on delivery. Once you've started cutting, it's yours.
Clean floor, clean tiles
The floor needs to be clean, dry, flat and free of old adhesive. TacTiles stick to the floor, so dust is the enemy.
Know where TacTiles won't work
Not for stairs, not for ramps, and not under heavy rolling loads. Stairs need proper adhesive and a stair nosing.
How to fit Interface carpet tiles, step by step
Find the centre of the room
Measure the middle of two opposite walls and snap a chalk line between them, then do the same the other way so you've got a cross in the centre. Never start against a wall — walls are never straight.
Dry-lay a row first
Before any adhesive goes down, lay a loose row of tiles out to each wall. If the edge tiles would come out as thin slivers, shift your centre line over by half a tile.
Fix the tiles down
Peel a TacTile off its backing and stick it to the floor where four tile corners will meet, sticky side up. Lay your tiles onto it. That's it — no drying time, no waiting. One connector at every four-corner junction.
Check which way the tiles go
There's an arrow on the back of each tile. Interface support five layouts: all arrows the same way (monolithic), a half-tile offset (ashlar or brick), every other tile turned 90° (quarter turn), or completely random. Pick one before you start.
Work outwards from the middle
Start at the centre and build out in a staircase shape rather than straight rows. It keeps everything square and stops small errors adding up across the room.
Butt them up gently
Tiles should touch with no gap, but don't force them tight. Brush the pile back as you lay each one so nothing gets trapped in the joint.
Cut the edge tiles
Put the tile you're cutting face down on top of the last full tile, then put a third tile on top pushed against the skirting. Mark along its edge, cut through the back with a sharp knife, and fit it with the cut edge to the wall.
Don't forget the edges
Every cut tile at the perimeter, and every full tile next to a cut one, needs a TacTile underneath. This is the step people skip and then wonder why the edges creep.
Finish off
Fit a threshold strip in any doorway, vacuum the floor and put the furniture back. Carpet tiles can be walked on straight away.
Watch it being done
TacTiles: fitting flooring without adhesive — Interface's own explainer of the TacTiles system.
The Interface bits that catch people out
TacTiles only work with the right backing
They're designed for Interface's CQuest Bio, CQuest BioX and Graphlex backings. If you've got a different backing, use a tackifier instead.
Skinny Planks are a bit different
If you've bought the long thin plank format, lay them lengthwise pointing towards the window and use a variable offset rather than lining every joint up.
Check the joints with your fingers
Interface specifically tell you to run your fingers along the joints as you go. Tight but not squeezed — squeeze them and the edges peak up into ridges.
Lifting a tile later is easy
Peel the tile off the TacTile, or cut through the connector between tiles. No damage to the floor underneath.
Mistakes to avoid
- Forgetting TacTiles at the perimeter and under cut tiles.
- Using TacTiles on stairs — they're not designed for it.
- Laying over a dusty floor, so the stickers never grip properly.
- Pushing tiles too tightly together and creating ridges.
- Moving heavy furniture across the floor before all the perimeter tiles are in.
Interface fitting questions, answered
What are Interface TacTiles?
Small square stickers, about 75mm across, that sit under the corners where four tiles meet. They hold the floor together as one sheet rather than sticking it to the subfloor — so there's no glue and no residue.
How many TacTiles do I need?
Roughly one for every tile, since each one covers a four-corner junction, plus extras around the perimeter. A box of 500 covers a good-sized room.
Can I use normal adhesive with Interface tiles instead?
Yes. A standard carpet tile tackifier works fine, and it's the better option for stairs, ramps or anywhere with heavy wheeled traffic.
Can Interface carpet tiles go on stairs?
Yes, but not with TacTiles. Stairs need a permanent adhesive on the treads and risers, plus a proper stair nosing.
Do I have to lay Interface tiles all the same way?
No. They support several layouts — all one direction, half-tile offset, quarter turn, or random. Some ranges are designed to be laid randomly, in which case you can ignore the arrows entirely.
Rather someone else did it?
If it's a big room, an awkward shape, or you just fancy a Saturday off, our own fitting teams cover the whole of the UK. Free site survey, tidy job, no dramas.
See how our fitting worksNationwide fitting, fully managed
Our own teams, a free site survey, and one point of contact from quote to clean-up.
Get a fitting quoteManufacturer’s own instructions: Interface installation guides. Always check the guidance supplied in the box — ranges and backings vary.