Description
Part L compliance thicknesses are where most current new-build and deep-retrofit specifications land, and the fixing length has to match the board depth exactly or the anchorage suffers. The Klimas LTX 180 mm is the plug that carries a 140 mm board through to a certified 30 mm bite into the masonry — a 10 mm sleeve, a 60 mm flange, and an all-plastic pin, held in matched lengths across the Renders World fixing range so a compliance-grade elevation runs one drill cycle from reveal to main wall.
What the LTX 180 mm Plug Does in a UK EWI System
The Klimas LTX 180 mm polystyrene fixing plug is a hammer-in mechanical anchor certified under ETA-16/0509 to ETAG 014, fixing 140 mm EPS or XPS boards on new-build masonry with a true 30 mm anchorage depth. Supplied in boxes of 200 from the insulation fixing accessories range, it is the length specified once a project reaches the board depths that meet current Part L U-value targets on solid-wall and cavity-fill build-ups.
The plug body is polyethylene and the expansion pin is glass-fibre-reinforced polyamide, so no metal pathway runs from masonry to render. Each fixing carries a point thermal transmittance of 0.001 W/K at surface mount and 0.000 W/K when recessed and capped, which keeps the thermal envelope intact at every anchor point across the elevation.
At 140 mm insulation the thermal investment per square metre is larger and the U-value target tighter than at 80 mm or 100 mm, so every fixing-point bridge that gets engineered out preserves the calculated performance the specification was designed to deliver. That is the difference the all-plastic pin makes on a compliance-grade wall — it protects the number on the drawing all the way to handover.
Why Trade Specifiers Choose the LTX 180 mm Plug
- Matched to Part L compliance board depths: the 180 mm length fixes 140 mm boards on new-build masonry — the thickness band where current Part L U-value targets are typically met — so the specification writes itself once the insulation depth is settled.
- Zero thermal bridge when immersed: 0.000 W/K per fixing at recessed mount keeps the full thermal value of a 140 mm board intact, where surface-mounted metal-pin alternatives quietly erode the calculated U-value at every anchor.
- Deep-retrofit reach over existing plaster: on walls carrying 20 mm of old plaster beneath the adhesive, the plug fixes 120 mm boards at surface mount and 140 mm when immersed, covering whole-house retrofit programmes without stepping up a length.
- Pin stiffness engineered for deep drives: glass-fibre reinforcement in the polyamide pin holds rigidity through a full 180 mm hammer drive, so installers get a clean seat without the mid-shaft flex that shows up in lighter plug designs at this length.
- 60 mm flange with adhesive-key pockets: the oversized pressure plate keys mechanically into basecoat mortar, preventing the fixing-point ghosting that can show through thin-coat render on dark or sun-loaded elevations.
- ETA-16/0509 across the full UK substrate range: the assessment covers concrete from C12/15, solid clay and calcium silicate brick, perforated brick including Porotherm 25, lightweight aggregate block, and autoclaved aerated concrete — every masonry type in UK housing stock.
Technical Specifications — LTX 180 mm Data Sheet Highlights
| Parameter | Value |
|---|---|
| Product code | LTX-10180 |
| Plug diameter (dk) | 10 mm |
| Overall length (Lk) | 180 mm |
| Flange diameter (Dk) | 60 mm |
| Anchorage depth (heff) | 30 mm · 50 mm in aerated concrete |
| Drill hole depth (h0) | 40 mm · 60 mm in aerated concrete |
| Body material | Polyethylene (PE) |
| Pin material | Polyamide + glass fibre (PA + GF) |
| Washer stiffness | 0.50 kN/mm |
| Thermal transmittance (χ) — surface mount | 0.001 W/K |
| Thermal transmittance (χ) — immersed mount | 0.000 W/K |
| New-build board thickness — no cutter | 140 mm |
| New-build board thickness — with cutter | 160 mm |
| Retrofit board thickness (20 mm plaster) — no cutter | 120 mm |
| Characteristic pull-out (LTX-10180 length row) | 0.40 kN |
| Certification | ETA-16/0509 (ETAG 014) |
| Pack quantity | 200 pcs |
How the LTX 180 mm Plug Installs in a Render or EWI System
The LTX 180 mm enters the ETICS build-up after the insulation board has been adhesive-bonded and the adhesive has cured — typically 24 hours on EPS at +20 °C. A 10 mm hole is drilled through the board and 40 mm into the masonry, the plug body is inserted until the flange sits flush against the board face, and the pin is driven home until the head seals against the sleeve collar. Basecoat with embedded mesh then covers the flange and unifies the surface for render.
- Fixing density: typically 6 plugs/m² in central zones, 8 at corners and edges, rising to 10 on exposed elevations above 15 m.
- Drilling depth: 40 mm into solid masonry, 60 mm in aerated concrete, drilled around 10 mm deeper than embedment to clear debris.
- Immersed option: recess the plug with an EPS hole cutter and cap with a grey EPS finishing cap for a flush plane and 0.000 W/K per fixing.
Fixing density is governed by the project wind-load calculation, not a rule of thumb. The fixing pattern and spacing calculation method sets out the layout aligned with ETAG 014 wind-load categories, and the step-by-step insulation fixings installation guide covers substrate assessment, drill-mode selection, and pin-drive technique in full.
Installation Notes — Drill Reach, Hole Geometry, Drive Discipline
Drill bit length is the first decision at this plug depth. A standard 210 mm SDS masonry bit reaches its working limit drilling through 140 mm of EPS plus 40 mm of masonry, leaving no spare for chuck depth or operator clearance. A 260 mm or 300 mm bit removes that constraint and lets the operator drill at normal speed without forcing the final millimetres.
Drill mode then follows the substrate. Impact mode drives cleanly through concrete and solid brick; rotation-only mode is essential on perforated brick, hollow block, and aerated concrete, because impact drilling collapses internal webs and drops pull-out below certified values. Clear each hole with three or four back-and-forth passes at reduced speed before inserting the plug.
Depth Stop and Perpendicularity
For the best result on 140 mm specifications, set a depth stop to 40 mm (60 mm on aerated concrete) and check perpendicularity every third hole. At 180 mm overall length a 2° angular drift at the surface produces roughly 6 mm of lateral offset at the expansion zone — enough to move the anchorage into a mortar joint rather than the brick face. Immersed mounting keeps each head flush and removes any visual trace from the rendered surface.
Pro Tips From UK Installers Using the LTX 180 mm Plug
At Part L board depths a handful of tooling habits keep an elevation render-ready and preserve the U-value the project paid for.
- Dedicate 300 mm bits to deep plug work. Keep two or three 300 mm SDS bits for 180 mm and 200 mm plugs and reserve 210 mm bits for shorter lengths — the longer bit transforms drilling rhythm and wears more evenly.
- Default to immersed mounting on every elevation. At 140 mm insulation the thermal payback is substantial; the countersinking step takes seconds per fixing and protects the calculated performance across the wall.
- Snap a single chalk grid after board placement. Marking the pattern in one pass keeps plug caps in a regular array on long elevations where small cumulative drift becomes visible in finished render.
- Confirm lightweight-block pull-out against the wind-load calc. The 0.40 kN length-row value suits standard domestic zones; exposed coastal or upland sites on aggregate block warrant on-site verification, with rotation-only drilling non-negotiable.
- Stage delivery on compliance-grade runs. A four-house terrace at 140 mm insulation runs to ten or more boxes; splitting delivery into two drops keeps the working area clear and reduces weather exposure of stored packs.
How the LTX 180 mm Compares to Sibling LTX Plug Lengths
The LTX-10 range covers nine plug lengths from 70 mm to 220 mm on one shared body, flange, pin, and ETA certification — only the sleeve length changes. The 180 mm sits between the 160 mm enhanced-spec plug and the 200 mm deep-renovation length, and Renders World stocks all three so a mixed-thickness elevation runs one drill cycle throughout.
| Variant | Key spec | When to choose |
|---|---|---|
| LTX 160 mm (200 pcs) | 120 mm new-build · 100 mm retrofit | 120–130 mm enhanced upgrade |
| LTX 180 mm (this product) | 140 mm new-build · 120 mm retrofit | 140 mm Part L compliance |
| LTX 200 mm (200 pcs) | 160 mm new-build · 140 mm retrofit | 160 mm deep renovation |
Is the LTX 180 mm Plug Right for Your Project?
- Fixing 140 mm EPS or XPS on new-build masonry, or 120 mm boards on retrofit walls over 20 mm plaster: the 180 mm length is the matched Part L compliance specification, paired with a grey EPS cap for a flush finish.
- Stepping down to enhanced domestic thicknesses? The LTX 160 mm plug in the comparison table above is the precise match for 120–130 mm boards on housing-association upgrades and improved-EPC schemes.
- Stepping up to deep renovation or near-Passive House builds? The LTX 200 mm plug in the table reaches 160 mm boards on new-build substrates and 140 mm boards over retrofit plaster.
- Need the boards to match? The graphite EPS insulation boards stock 140 mm in matching pack sizes, ready to pair with these plugs on one order.
- Specifying mineral wool for fire-rated or high-rise façades? Higher-density mineral wool and fire-strategy requirements typically call for metal-pin fixings with greater pull-out capacity under current Approved Document B guidance; the wider fixing accessories range includes suitable variants.
FAQ — LTX 180 mm Coverage, Substrates, Ordering
What board thickness does the 180 mm plug actually secure?
On new-build masonry with a 10 mm adhesive layer, surface mounting secures boards up to 140 mm and immersed mounting with a hole cutter extends that to 160 mm. On retrofit substrates carrying 20 mm of existing plaster, the effective range is 120 mm surface-mounted or 140 mm with a cutter. That places the 180 mm plug squarely in the Part L compliance band; for 150 mm boards at surface mount, the 200 mm length provides the additional reach without a cutter.
How many square metres does one box of 200 cover?
At the standard density of 6 plugs/m² in central zones and 8/m² at corners and edges, a 200-piece box covers roughly 25–33 m² of insulated wall. On exposed elevations above 15 metres or in higher wind-load zones the density rises to 8–10/m² and coverage falls to around 20–25 m² per box. A project-specific fixing-pattern calculation under BS EN 1991-1-4 governs the exact figure for any given elevation.
What is the pull-out performance on lightweight aggregate blocks?
The LTX-10180 length row carries a characteristic pull-out of 0.40 kN, which meets the design requirements for standard domestic EPS insulation under typical UK wind-load conditions. Projects on lightweight aggregate substrates in exposed coastal or upland zones benefit from confirming pull-out against the project-specific wind-load calculation. Rotation-only drilling preserves the block's aggregate structure and maintains the certified value.
Can I install the 180 mm plug with a standard 210 mm SDS bit?
A 210 mm bit reaches its practical limit once total drilling depth approaches 190 mm, so while it is technically long enough, operator clearance and chuck depth slow the drilling rhythm noticeably. A 260 mm or 300 mm bit restores normal drilling speed and produces more consistent hole geometry across an elevation — the reliable choice at this plug length.
What site conditions does the plug install in?
The polyamide pin retains its drive characteristics across UK site temperatures, from cool mornings around +5 °C through to summer heat above 25 °C. As with all ETICS fixings, the underlying adhesive must have reached its manufacturer-specified cure time — most commonly 24 hours on EPS at +20 °C, extended in colder weather — before mechanical fixing begins. Avoid driving plugs into substrates that are visibly frosted or saturated.
Does the all-plastic construction support whole-life carbon reporting?
The polyethylene body and polyamide pin are recyclable thermoplastics, and the cardboard packaging enters standard paper and card recycling streams. All-plastic construction carries lower embodied carbon per fixing than steel-pin alternatives, which supports the embodied-carbon line of a whole-life carbon assessment or PAS 2035 retrofit report. Renders World holds the full LTX range in matched lengths, which keeps specification and reordering straightforward at the fixing counts a compliance-grade project generates.
Technical Documentation — LTX-10 TDS and Anchorage Reference
- Klimas LTX-10 Product Data Sheet (PDF) — covers all LTX-10 length variants including the 180 mm anchor, with the full selection and strength tables.