Description
The LTX 180mm polystyrene fixing plug 200pcs box fixes a 140 mm insulation board on new or stripped brick, block or concrete, and a 120 mm board where about 20 mm of old plaster remains on the wall. It is a Klimas LTX-10: a hammer-in plastic sleeve and pin with a 60 mm plate.
Deep boards leave little room for error at the back of the plug, so the length is worth checking against the wall before ordering. Shorter and longer lengths are in the insulation fixing accessories range.
Boards the 180 mm Plug Fixes
The Klimas selection table, brick, block and concrete, LTX-10180 row:
| Wall | Plate on the board face | Plate recessed |
|---|---|---|
| New or stripped wall, 10 mm adhesive bed | up to 140 mm | up to 160 mm |
| Old plaster of 20 mm plus the adhesive bed | up to 120 mm | up to 140 mm |
The assessment's formula gives the same: 180 − 10 − 30 = 140 mm of board on a new wall, and 180 − 30 − 30 = 120 mm on a wall with old plaster.
In aerated concrete the plug must reach 50 mm into the block, so each figure loses 20 mm — 120 mm on the surface and 140 mm recessed on a new wall, 100 mm and 120 mm over old plaster.
Why the 180 mm Length
- Made for 140 mm boards on bare masonry. That is this plug's own row in the table, plate on the surface.
- Takes 160 mm recessed. Sinking the plate into the board buys 20 mm more, on a new wall.
- Handles 120 mm over old plaster. Useful on refurbishment, where stripping the plaster is not planned.
- Thermally quiet. No metal in the plug: 0.001 W/K each on the surface, 0.000 W/K recessed.
- Assessed in solid, hollow and aerated walls. ETA-16/0509 of 30 March 2026 covers all five wall groups with one 10 mm drill.
LTX-10180 Specification
| Parameter | Value |
|---|---|
| Product code | LTX-10180 |
| Sleeve diameter × length | 10 × 180 mm |
| Plate diameter | 60 mm |
| Drill bit | 10 mm (cutting diameter up to 10.45 mm) |
| Anchorage depth in the wall | at least 30 mm; 50 mm in aerated concrete |
| Drilled hole depth | at least 40 mm; 60 mm in aerated concrete |
| Sleeve material | Polyethylene |
| Pin material | Polyamide, glass-fibre reinforced |
| Point thermal transmittance | 0.001 W/K on the surface · 0.000 W/K recessed |
| Plate stiffness | 0.50 kN/mm |
| Minimum spacing, edge distance and wall thickness | 100 mm each |
| European Technical Assessment | ETA-16/0509 of 30 March 2026 |
| Box | 200 plugs |
Characteristic Pull-Out by Wall Type
| Wall | Drilling | Characteristic pull-out |
|---|---|---|
| Concrete C12/15 | hammer | 0.50 kN |
| Concrete C20/25 to C50/60 | hammer | 0.75 kN |
| Solid clay brick | hammer | 0.75 kN |
| Calcium silicate solid brick | hammer | 0.60 kN |
| Calcium silicate hollow block | hammer | 0.60 kN |
| Vertically perforated clay brick | rotary only | 0.60 kN |
| Porotherm 25 perforated block | rotary only | 0.40 kN |
| Lightweight concrete block | rotary only | 0.60 kN |
| Aerated concrete, density from 0.35 kg/dm³ | rotary only | 0.50 kN |
| Aerated concrete, density from 0.65 kg/dm³ | rotary only | 0.60 kN |
The 0.75 kN figure for concrete starts at C20/25 on the Klimas sheet and at C16/20 in the 2026 assessment; where the concrete grade is in doubt, use 0.50 kN. The plug count per square metre comes from the fixing design, which works from these characteristic values with its own safety factors.
How to Fit the 180 mm Plug
- Adhesive first: boards are bonded to the wall; the plug only takes wind suction.
- Drill 10 mm where adhesive is behind the board, through 140 mm of board and the adhesive, then at least 40 mm into the wall (60 mm in aerated concrete). A drill bit for this depth needs to be long enough to reach the bottom of the hole.
- Rotary only in perforated brick, hollow block and aerated concrete.
- Clean out the hole with four slow passes of the drill.
- Push the plug in until the plate is flush, then drive the pin with one series of blows. A driven pin is never hit again.
Minimum 100 mm between plugs and to the wall edge; fixing temperature 0 °C to +40 °C; plates covered by mesh and base coat within six weeks. The guide to installing insulation fixings covers the full sequence.
Recessed Fixing at 180 mm
With Klimas's WK-FT cutter the plate sits inside the board and a polystyrene disc covers it. On this length that means 160 mm of board on a new wall or 140 mm over old plaster, with 0.000 W/K per plug.
The Whole LTX Range in One Table
Selection table for every length Renders World stocks, brick, block and concrete. "New wall" = 10 mm adhesive bed; "old plaster" = that bed plus 20 mm of plaster.
| Plug | New wall, surface | New wall, recessed | Old plaster, surface | Old plaster, recessed |
|---|---|---|---|---|
| 70 mm | 30 mm | 50 mm | 10 mm | 30 mm |
| 90 mm | 50 mm | 70 mm | 30 mm | 50 mm |
| 110 mm | 70 mm | 90 mm | 50 mm | 70 mm |
| 120 mm | 80 mm | 100 mm | 60 mm | 80 mm |
| 140 mm | 100 mm | 120 mm | 80 mm | 100 mm |
| 160 mm | 120 mm | 140 mm | 100 mm | 120 mm |
| 180 mm (this box) | 140 mm | 160 mm | 120 mm | 140 mm |
| 200 mm | 160 mm | 180 mm | 140 mm | 160 mm |
| 220 mm (100 per box) | 180 mm | 200 mm | 160 mm | 180 mm |
If the old plaster is deeper than 20 mm, add the extra to the board before reading. Use the plug length calculator for any other build-up.
Right Length for Your Board
- 180 mm for 140 mm EPS insulation boards on a new or stripped wall, or for 120 mm boards over about 20 mm of old plaster.
- 200 mm for 140 mm boards over old plaster, plate on the surface, or for 160 mm boards on a new wall.
- 160 mm for 120 mm boards on a new wall.
LTX 180 mm Plug — Questions
Which plug for a 150 mm board?
The table has no 150 mm row. On a new wall the 180 mm plug reaches 140 mm on the surface and 160 mm recessed; the 200 mm plug reaches 160 mm on the surface. For 150 mm with the plate on the surface, take the 200 mm plug, or recess the 180 mm.
How many boxes for 100 m²?
Klimas recommends a minimum of 6 plugs per m² in the field and 8 per m² at corners on walls up to 15 m. 100 m² at 6 per m² is 600 plugs, three boxes; with more corner area, plan on four.
Above 15 m the minimum is 8 per m² in the field and 10 per m² at corners. The building's insulation design sets the exact count.
What changes over old plaster?
The plaster takes 20 mm of the plug's length, so the surface-fixed board drops from 140 mm to 120 mm. Recessing brings it back to 140 mm.
When should the hammer action be off?
In vertically perforated clay brick, Porotherm 25, hollow blocks, lightweight concrete block and aerated concrete — the assessment's values for those walls assume rotary drilling. Concrete and solid brick are drilled with hammer.
Which insulation does it suit?
Klimas recommends the LTX-10 for EPS and XPS polystyrene boards. Stone wool slabs take the fixing named in the wool system's instructions.
Does the plug hold the board's weight?
No. The assessment covers wind suction only; the adhesive bed carries the boards.