Description
The Klimas LTX 110 mm hammer-in fixing plug is the matched mechanical anchor for 80 mm EPS and XPS insulation boards — the UK's most widely specified domestic retrofit thickness — and sits third in the LTX-10 range by length. Held under European Technical Assessment ETA-16/0509 across five substrate categories, with a 10 mm polyethylene body, glass-fibre-reinforced polyamide pin, and point thermal transmittance of just 0.001 W/K (0.000 W/K immersed). Supplied in 200-piece boxes — enough for approximately 25–33 m² of insulated wall at standard fixing density.
Where LTX 110 mm Plugs Perform Best — Standard UK Domestic Retrofit
The LTX 110 mm plug is the matched mechanical fixing for 80 mm EPS and XPS boards in the bulk of UK domestic external wall insulation retrofit work, anchoring boards into concrete, solid brick, perforated brick, lightweight block, and aerated concrete substrates under ETA-16/0509 assessment to ETAG 014. Its 30 mm effective embedment into the structural substrate — rising to 50 mm in aerated concrete — delivers characteristic pull-out resistance of 0.75 kN in concrete C20/25, well above the design loads typical of two-storey semi-detached and terraced properties. The 110 mm length sits one step up from the 50 mm board plug and forms part of the wider fixing accessories range, where each plug length corresponds to a specific board thickness band.
On retrofit walls where 20 mm of existing plaster sits beneath the adhesive layer, the surface-mounted board capacity reduces to 50 mm while immersed mounting extends it back to 70 mm. The 60 mm pressure flange spreads the clamping load broadly across the board face, and its moulded adhesive-pocket profile gives the basecoat a positive mechanical key directly over each fixing — exactly where rendered finishes can otherwise show faint shadow lines under low-angle raking light.
Why Specifiers Choose the LTX 110 mm Plug
- Matched to the UK's most popular retrofit board thickness: 80 mm graphite EPS is the headline specification across UK domestic refurbishment, ECO-funded work, and Warm Homes programme installations. The 110 mm plug is the length engineered for that thickness on standard new-build masonry, with no compromise on embedment depth.
- Virtually zero thermal bridging at every fixing point: All-plastic construction delivers point thermal transmittance (χ) of 0.001 W/K surface-mounted, falling to 0.000 W/K when immersed. The U-value calculation stays accurate and no "ladybird" cap-pattern appears on the finished facade in damp or cold weather.
- Five-substrate certification under one product code: ETA-16/0509 covers concrete, solid clay and calcium silicate brick, perforated brick, lightweight aggregate block, and aerated concrete — the full range of UK masonry from Victorian solid brick through to modern cellular blockwork, all on a single SKU.
- 0.75 kN characteristic pull-out in concrete C20/25: The all-plastic design intentionally trades a small headroom against metal-pin pull-out for complete thermal-bridge elimination. The values comfortably exceed design requirements for standard domestic EPS systems at typical UK wind exposures.
- Glass-fibre reinforced pin drives clean in cold UK conditions: Polyamide pin with glass-fibre reinforcement stays rigid through hammer impact at low winter temperatures, where unreinforced plastic pins risk deflection and metal pins create condensation rings around the head.
- Two-box pack maths matches a typical semi-detached: 60–70 m² of wall area at 6 plugs/m² central plus 8 plugs/m² at corners works out at roughly 400–480 fixings — two 200-piece boxes plus a small reserve box covers the property end-to-end without leftover stock.
Technical Specifications — LTX-10110 Data Sheet Highlights
| Parameter | Value |
|---|---|
| Product code | LTX-10110 |
| Plug diameter (dk) | 10 mm |
| Overall length (Lk) | 110 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) |
| Drill bit diameter | 10 mm |
| Body material | Polyethylene (PE) |
| Pin material | Polyamide + glass fibre (PA + GF) |
| Washer stiffness | 0.50 kN/mm |
| Point thermal transmittance (χ) — surface | 0.001 W/K |
| Point thermal transmittance (χ) — immersed | 0.000 W/K |
| Characteristic pull-out (concrete C12/15) | 0.50 kN |
| Characteristic pull-out (concrete C20/25 / solid brick) | 0.75 kN |
| Board thickness — surface mount (new-build) | up to 70 mm |
| Board thickness — immersed mount (new-build) | up to 90 mm |
| Board thickness — surface mount (retrofit, 20 mm plaster) | up to 50 mm |
| Certification | ETA-16/0509 (ETAG 014 / EAD 330196-01-0604) |
| Pack quantity | 200 pcs |
How to Install the LTX 110 mm Plug — Drilling, Embedment, Finishing
Installation follows the standard three-step cycle: drill, insert sleeve, hammer pin. Drill a 10 mm hole to 40 mm depth (60 mm in aerated concrete) using impact mode on concrete and solid brick, or rotation-only mode on hollow and aerated substrates to preserve the cell structure that gives those materials their pull-out resistance. Clear masonry dust with three or four back-and-forth strokes at reduced speed before inserting the polyethylene sleeve until the flange sits flush with the board face, then drive the glass-fibre pin with firm, even hammer blows until the head seats fully against the sleeve collar.
- Surface mounting (standard method): Suits 80 mm boards on new-build masonry, 50 mm boards on retrofit substrates with existing plaster. Fixing head sits 2–3 mm proud of the board face, ready for basecoat.
- Immersed mounting (best thermal and visual result): Cut a 67 mm × 20 mm recess into the board surface with the EPS hole cutter, drill and fix as normal, then seat a graphite EPS cap flush over the head. Extends new-build board capacity to 90 mm and drops χ to 0.000 W/K.
- Aerated concrete adjustment: Drill to 60 mm and use rotation-only mode. The 50 mm embedment depth maintains rated pull-out without crushing the cellular substrate.
- Mixed surface/immersed elevations: Countersink the immersed fixings first, then drill the surface-mount holes — cutter dust does not settle into open holes that way, and the workflow stays clean across reveal/main-wall transitions.
- Perpendicular drilling discipline: Keep the drill square to the wall face. An angled hole pushes part of the expansion zone outside the structural substrate and reduces pull-out resistance below rated values.
For full sequencing across an elevation including base-track interface, corner-zone density, and snagging inspection, the complete EWI fixings installation guide for UK projects walks each stage in order. To calculate exact plug counts by wind zone and building height, the fixing pattern and spacing calculation method works through worked examples aligned to ETAG 014 design loads.
How LTX 110 mm Compares to Sibling LTX Plug Lengths
The LTX-10 range covers nine plug lengths from 70 mm to 220 mm. The 110 mm is the third variant by length and the most widely specified across UK domestic retrofit, with the 90 mm directly below for 50 mm boards and the 120 mm directly above for retrofit walls with thicker plaster or 80–90 mm board zones.
| Variant | Board Thickness (New-Build) | Embedment | Best Application |
|---|---|---|---|
| LTX 90 mm (200 pcs) | 40–50 mm | 30 mm / 50 mm aerated | 50 mm domestic EWI, soffits |
| LTX 110 mm (this product) | 60–80 mm | 30 mm / 50 mm aerated | 80 mm domestic retrofit (UK standard) |
| LTX 120 mm (200 pcs) | 80–90 mm | 30 mm / 50 mm aerated | Retrofit with thicker plaster, 90 mm boards |
The plug body, flange dimensions, pin material, and ETA certification stay identical across the range — only the sleeve length changes to match board thickness plus adhesive layer plus embedment. On a typical UK domestic refurbishment specifying 80 mm graphite EPS on the main walls and 30 mm boards at reveals, the 110 mm plug handles the main elevations and the 70 mm handles the reveals, both running through the same 10 mm drill bit and the same installation cycle.
Pro Tips From UK Installers Using LTX 110 mm Plugs
The 110 mm plug is the volume fixing on UK domestic retrofit — small habits in pack ordering and drill discipline compound across the typical 400-plug semi-detached property.
- I always order two boxes plus a half for a standard semi. 60–70 m² of wall at 6 plugs/m² central and 8 plugs/m² at corners lands at 400–480 plugs. Two boxes covers the central zones, the third half-box covers corners plus misdrilled-hole reserve. Saves a same-week reorder.
- I always countersink the immersed fixings before drilling surface-mount holes on mixed elevations. Cutter dust falls into open drill holes and packs under the sleeve, giving false-seated plugs. Sequencing by mount type keeps the substrate clean.
- I always keep the drill perpendicular on solid brick. An angled hole shifts the expansion zone partially outside the brick, dropping pull-out below the 0.75 kN rated value — a quiet failure that only shows up on a pull-test.
- I always change to rotation-only on aerated concrete and lightweight block. Hammer mode shatters the cellular structure; the visible powder coming back is broken cells, not just dust, and the pull-out value drops with it.
- I always pull-test one plug per 50 on retrofit substrates of unknown age or grade. A simple manual pull on a sample confirms the substrate delivers rated resistance before the next pallet of plugs goes up the scaffold.
Is the LTX 110 mm Plug Right for Your Project?
- Standard 80 mm EPS or XPS domestic retrofit on masonry: The 110 mm length is the matched specification for the UK's most common board thickness, paired with a graphite EPS cap for a flush thermal finish. The LTX-10 range covers the full substrate range from solid brick to aerated concrete.
- 50 mm board zones on the same elevation: Step down to the LTX 90 mm plug, which keeps drill bit and installation cycle identical.
- Retrofit walls with 20 mm plaster carrying 80 mm boards: Step up to the LTX 120 mm plug for the additional sleeve length needed to maintain full embedment into the structural substrate.
- Mineral wool slabs on fire-rated facades or high-rise: Steel-pin fixings are typically called up for non-combustible fixing chains under current Approved Document B guidance. The full fixing accessories range includes alternatives for those specifications.
- Timber-frame substrate: The LTX hammer-in plug is designed for masonry and concrete only. TD60 PVC discs in the fixing accessories range provide the correct load-spread for fixing EPS to timber studs.
- Need 80 mm boards to go with these plugs? The graphite EPS insulation boards stock 80 mm in matching pack sizes, ready to pair on a single order.
FAQ — LTX 110 mm Coverage, Compatibility, Substrate Limits
How many boxes do I need for a typical semi-detached house?
A standard two-storey UK semi-detached property typically presents 60–70 m² of insulated wall area. At 6 plugs/m² in central zones and 8 plugs/m² at corners and edges where wind suction concentrates, the total requirement falls in the 380–480 plug range. Two 200-piece boxes (400 plugs) cover the central zones comfortably, with a third box providing corner-zone fixings and a practical reserve for any misdrilled holes. The fixing pattern and spacing calculation method works through the maths for non-standard building shapes and higher wind zones.
Does the LTX 110 mm work on retrofit walls with existing plaster or render?
Yes. With up to 20 mm of existing plaster beneath the adhesive layer, the 110 mm length supports boards up to 50 mm with surface mounting or up to 70 mm with immersed installation. For 80 mm boards on heavily rendered retrofit walls, the LTX 120 mm provides the additional sleeve length needed to maintain the full 30 mm anchorage into the structural masonry. A test hole at quoting stage confirms substrate condition and existing plaster thickness on unfamiliar properties.
What pull-out resistance does the LTX 110 mm achieve?
Characteristic pull-out under ETA-16/0509 is 0.50 kN in concrete C12/15, rising to 0.75 kN in concrete C20/25 and solid brick. For domestic EPS systems on typical UK substrates these values comfortably exceed wind-suction design loads. Metal-pin fixings deliver higher headroom for dense mineral wool at height or other demanding applications, with the trade-off of measurable point thermal bridging at each fixing (typically χ of 0.002–0.004 W/K versus 0.001 W/K for the LTX).
Can the 110 mm plug handle thicker boards with immersed mounting?
Yes — countersinking the board face with an EPS hole cutter before drilling extends the surface-mounted board capacity from 70 mm to 90 mm on new-build substrates and from 50 mm to 70 mm on retrofit walls with existing plaster. Immersed mounting also drops the point thermal transmittance to 0.000 W/K, so the technique delivers both a thickness gain and a thermal performance improvement in the same step.
Is the LTX 110 mm certified for aerated concrete?
Yes — substrate Category E (aerated concrete) is covered by ETA-16/0509. On aerated concrete the anchorage depth increases to 50 mm and the drill hole to 60 mm, so the 110 mm sleeve length supports boards up to 50 mm on new-build aerated substrates. For 80 mm boards on aerated substrates, longer LTX variants provide the additional sleeve length needed.
How should LTX plugs be stored on site?
Keep the 200-piece boxes in a dry store at normal site temperatures. The polyethylene body and polyamide pin remain stable across the −20 °C to +60 °C range typical of UK conditions and are unaffected by humidity. Avoid prolonged direct sun on stripped pallets, since UV degrades unprotected thermoplastics over multi-year exposure — a storage discipline issue, not a short-term concern.
Can the plugs and packaging be recycled?
Both the polyethylene body and polyamide pin are recyclable thermoplastics that enter standard plastics recovery streams. The cardboard 200-piece packaging is fully recyclable through paper and card collection. For projects tracking embodied carbon, the all-plastic LTX range also carries lower upfront carbon than steel-pin alternatives, which suits sustainability-targeted specifications under PAS 2035 and Warm Homes programme requirements.
Technical Documentation — LTX-10 TDS, ETA, Anchorage Calculation