Description
At 160 mm board depth the fixing has to reach through the insulation, the adhesive and still bite the masonry, and the 200 mm sleeve is the last length Klimas boxes in two hundreds. Renders World stocks it beside the rest of the insulation fixing accessories range, so the step up from a 140 mm elevation changes the plug and nothing else.
What the LTX-10200 Fixes on a Deep Insulated Wall
The LTX 200mm polystyrene fixing plug 200pcs box holds hammer-in anchors assessed under ETA-16/0509, each taking 30 mm of anchorage in masonry to fix a 160 mm board on new-build walls before the basecoat goes on.
Body and pin are both plastic — polyethylene and glass-fibre reinforced polyamide — so nothing conductive runs from the substrate to the render. The data sheet declares a point thermal transmittance of 0.001 W/K surface-mounted and 0.000 W/K once the head is recessed and capped, which is the reason the immersed method earns its extra seconds on a deep board.
The assessment covers five substrate categories, and the strength table is organised by substrate rather than by plug length:
- Categories A and B, solid: concrete C20/25–C50/60 (≥ 2.30 kg/dm³) and solid clay brick (≥ 2.00 kg/dm³) both give 0.75 kN characteristic pull-out, the highest rows in the table. Concrete C12/15 (≥ 2.25 kg/dm³) reads 0.50 kN, and calcium silicate solid brick 0.60 kN.
- Category C, hollow and perforated: calcium silicate hollow blocks (≥ 1.60 kg/dm³) and vertically perforated clay bricks (≥ 1.20 kg/dm³) sit at 0.60 kN, while Porotherm 25 (≥ 0.80 kg/dm³) is the lowest row in the whole table at 0.40 kN.
- Categories D and E, lightweight: LAC lightweight aggregate concrete (≥ 0.88 kg/dm³) gives 0.60 kN, AAC2 (≥ 0.35 kg/dm³) 0.50 kN and AAC7 (≥ 0.65 kg/dm³) 0.60 kN. In aerated concrete the embedment steps to 50 mm and the hole to 60 mm.
Every one of those is a characteristic value with a partial safety factor of γM = 2.0 applied where no national regulation says otherwise, so the design figure per fixing is half the table value before the wind loading is worked out. On perforated clay block, design against the 0.40 kN row rather than the category average — that single row is the reason a substrate check comes before the order.
Why Installers Fit the 200 mm Length
- Four documented board cases: 160 mm on new-build masonry surface-mounted, 180 mm with the plastic cutter, and 140 mm or 160 mm respectively on an old wall where 20 mm of existing plaster sits under the adhesive.
- The last length in a 200-piece box: the selection table breaks the pack at 220 mm, where the count drops to 100. Anyone comparing box prices across that step is comparing different quantities.
- No point bridge to allow for: at 0.000 W/K immersed there is nothing to add back into the calculation at each anchor position, where a steel-pin equivalent puts a figure at every one.
- A 60 mm collar made for mortar: the manufacturer's catalogue describes a stiffened support collar with adhesive pockets, so the basecoat keys into the plate instead of bridging over it.
- One geometry to set out: minimum substrate thickness, minimum fastener spacing and minimum edge distance are all 100 mm, which makes the corner zone easy to mark before the drill comes out.
Technical Specifications From the Klimas LTX-10 Data Sheet
| Parameter | Value |
|---|---|
| Product code | LTX-10200, marked LTX10200(200) |
| Fastener diameter (dk) | 10 mm |
| Overall length (Lk) | 200 mm |
| Collar diameter (Dk) | 60 mm |
| Effective anchorage depth (heff) | 30 mm; 50 mm in aerated concrete |
| Hole depth (h0) | 40 mm; 60 mm in aerated concrete |
| Body / pin material | PE / PA + GF |
| Point thermal transmittance (χ) | 0.001 W/K surface, 0.000 W/K immersed |
| Collar stiffness (S) | 0.50 kN/mm |
| Characteristic pull-out | 0.40–0.75 kN by substrate row, γM = 2.0 |
| Minimum substrate thickness, spacing, edge distance | 100 mm each |
| Board thickness, new build | 160 mm; 180 mm with cutter (140/160 mm in aerated concrete) |
| Board thickness, old building with 20 mm plaster | 140 mm; 160 mm with cutter (120/140 mm in aerated concrete) |
| European Technical Assessment | ETA-16/0509 |
| Box quantity | 200 pcs |
Board figures already carry a 10 mm adhesive layer, and the old-building rows add 20 mm of plaster on top of that — the sheet's own rule is insulation plus sub-crusts plus anchorage depth, which is the arithmetic behind every row. Two published mirrors of this sheet agree on all of it and differ only in the assessment basis they cite, ETAG 014 on the 2018 product sheet against EAD 330196-01-0604 on the catalogue pages. Quote the ETA number on a specification and the ambiguity never arises.
How to Install the 200 mm Plug After the Boards Are Bonded
Mechanical fixing follows the adhesive, and the plug goes into a board that is already holding itself on the wall.
- Identify the substrate and confirm at least 100 mm of it at the fixing position.
- Bond the boards and let the adhesive reach the cure time its own data sheet states.
- Drill 10 mm diameter to 40 mm in solid masonry, or 60 mm in aerated concrete, keeping the hole at least 10 mm deeper than the embedment.
- Drill without impact in hollow brick, perforated units and aerated concrete — impact breaks the internal webs and takes the assessed pull-out with them.
- Clear the hole with four back-and-forth passes of the bit at reduced speed.
- Push the body in until the collar faces flush against the board, siting it where adhesive was applied behind the panel.
- Drive the pin in one continuous action; a pin that is already driven does not take a second hit.
- For an immersed head, cut the recess with the WK-FT plastic cutter (⌀66.7 mm, 90 mm thrust collar) and cap it with a KS or KSG polystyrene disc at ⌀67 × 17 mm.
Fixing numbers come from the thermal insulation design. Klimas recommends a minimum of 6 per m² in the field and 8 per m² in corner zones up to 15 m from the ground, rising to 8 and 10 above 15 m, and states in the same line that the recommendation does not replace the design. The fixing pattern and spacing method covers the layout, and the plug length calculation from board depth works a length back from board, sub-crusts and embedment.
Hole Depth and Perpendicularity at This Length
On a 160 mm board the hole runs 210 mm from board face to base: 160 mm board + 10 mm adhesive + 40 mm masonry. That is the working reach a bit has to give before chuck clearance is counted, so a bit chosen for 100 mm boards will be fighting the last stretch rather than cutting it.
Perpendicularity is worth a glance every few holes here. Two degrees of drift across the 200 mm shank moves the expansion zone about 7 mm sideways (200 × tan 2° = 7.0 mm), which is enough to put it in a mortar joint instead of the brick face — and the strength table has no row for mortar. Substrate assessment and drive technique are set out in full in the guide to installing insulation fixings.
Comparing the 180 mm, 200 mm and 220 mm Lengths
The LTX-10 family runs ten codes from 70 mm to 260 mm on one body, collar, pin and assessment; only the sleeve changes. Renders World stocks nine of them, and these three sit next to each other on the shelf.
| Length | Board reach | Choose when |
|---|---|---|
| LTX 180 mm plug, 200 per box | 140 mm new-build · 120 mm over plaster | Boards at 140 mm on sound masonry |
| LTX 200 mm plug (this product) | 160 mm new-build · 140 mm over plaster | Boards at 160 mm, or 140 mm on a plastered wall |
| LTX 220 mm plug, 100 per box | 180 mm new-build · 160 mm over plaster | Boards at 180 mm, where the pack drops to 100 |
Choosing the Length for Your Board Thickness
- 160 mm boards on clean new-build masonry: this is the matched length, surface-mounted, with the recess-and-cap option where the 0.000 W/K figure matters to the calculation.
- 140 mm boards on a wall carrying 20 mm of old plaster: also this length, because the plaster uses up the reach a shorter plug would have needed.
- 180 mm boards, or 160 mm over old plaster: step up to the 220 mm plug in the table above and accept the 100-piece pack rather than asking a cutter to make up the difference.
- Mineral wool instead of polystyrene: this fastener is assessed for EPS and XPS boards, so a wool build-up is a separate fixing question and belongs with the wider fixing range.
Ordering runs in whole boxes. This box was listed at £32.50 per 200 pieces and shown in stock when the page was read in August 2026 — £32.50 ÷ 200 = £0.16 per plug, or about £0.98 per m² of wall at the field density of six. Pair it with graphite EPS insulation boards at 160 mm and both halves of the fixing decision are settled on one order.
FAQ — Reach, Substrates and Box Quantities
How many boxes does a 100 m² elevation take?
One LTX 200mm polystyrene fixing plug 200pcs box covers 25–33 m² at the manufacturer's minimum densities: 200 ÷ 6 per m² = 33.3 m², and 200 ÷ 8 per m² = 25 m². Over 100 m² that is 100 ÷ 33.3 = 3.0 boxes at field density and 100 ÷ 25 = 4.0 with corner zones at eight, so four boxes suits a typical elevation. The project's thermal insulation design sets the actual count.
Which length suits a 170 mm board?
The selection table has no 170 mm row: 200 mm is documented to 160 mm on new-build masonry and 220 mm to 180 mm, so the 220 mm plug is the sourced answer for 170 mm and leaves reach in hand. Its box holds 100 rather than 200, which changes the per-plug arithmetic on a large order.
Does the reach change on a wall that still has plaster?
Yes. The sheet counts 10 mm of adhesive plus 20 mm of plaster as sub-crusts, which brings the surface-mounted figure down from 160 mm of board to 140 mm. With the plastic cutter and an immersed head, 160 mm is workable again on that build-up.
Which substrates need rotation-only drilling?
Hollow blocks, vertically perforated clay units and aerated concrete all keep their internal webs intact when drilled without impact, and those webs are what the assessed pull-out depends on. Solid concrete and solid brick take impact mode, and every hole is cleared four times at reduced speed before the plug goes in.
Who decides how many fixings the wall needs?
The thermal insulation design does, against the wind loading for that building and exposure. Klimas publishes 6 and 8 per m², and 8 and 10 above 15 m, expressly as minimum recommendations that a design supersedes rather than as a specification on their own.
What caps the recess on an immersed head?
The catalogue pairs the LTX-10 with the WK-FT plastic cutter at ⌀66.7 mm and a KS or KSG polystyrene disc at ⌀67 × 17 mm, in white or graphite. Match the disc colour to the board so the plane reads evenly under the basecoat.
Technical Documentation — LTX-10 Data Sheets
- Klimas LTX-10 Product Data Sheet (PDF) — technical parameters, substrate strength table, selection table and installation method.
- Klimas LTX-10 catalogue sheet with installation data (PDF) — adds minimum substrate thickness, spacing and edge distance, plus the cutter and disc dimensions.