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Aluminium foil tape - foil,
£255.98
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Pir insulation board - pir, 20
£174.95
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Celotex kingspan pir - kingspan,
£185.00
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Celotex 100mm x - 5,
£190.00
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Rockwool rwa45 100mm - 100mm, acoustic
£930.00
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Expanded polystyrene eps70 - expanded,
£1180.00
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Expanded polystyrene foam - expanded,
£440.00
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Loft insulation roll - roll, roof
£32.49
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Expanded polystyrene eps70 - polystyrene,
£324.00
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Cavity closers multi - cavity,
£68.49
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Superglass loft insulation - superglass,
£615.00
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Isover acoustic partition - isover, roll
£73.75
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Kingspan thermawall multi - kingspan,
£89.99
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Knauf loft roll insulation - knauf,
£17.75
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Kingspan 100mm greenguard - 100mm,
£52.70
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Foamglas perinsul - foamglas,
£150.00
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Kapton polyimide tape heat - polyimide,
£167.99
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Cavity closers multi - cavity,
£96.99
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Loft roll attic insulation - loft,
£45.94
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Kapton polyimide tape - polyimide,
£167.99
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Closed cell - 2m, 1m,
£244.98
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Celotex kingspan 2400mm - kingspan, x
£199.00
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Rockwool 100mm rwa45 - rockwool,
£64.99
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Insulation recticel celotex - insulation, -recticel/celotex
£1224.00
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100mm insulation - 15, 90/100mm
£390.00
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Sheets foamglas 100mm - foamglas,
£179.00
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Wrap around universal wool - wrap,
£7.89
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Ecotherm eco versal pir - ecotherm, eco-versal
£71.94
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Rockwool acoustic slab - rockwool,
£72.77
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Rockwool rwa45 1200mm 600mm - 1200mm,
£48.00
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Rockwool acoustic slab rwa45 - slab,
£78.87
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Rockwool rwa45 acoustic sound - rockwool,
£240.00
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Solid neoprene rubber strip - solid,
£70.00
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Aluminium foil tape - aluminium,
£35.50
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Rockwool rwa45 acoustic - rwa45,
£68.95
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Loft roll insulation - loft, 100mm
£485.27
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Rockwool acoustic sound - acoustic,
£345.00
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100mm plastic round - 100mm,
£1000.00
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Rockwool rwa45 50mm acoustic - rockwool,
£72.88
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100 100mm thick - 100, ceiling
£349.99
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Superglass loft roll - superglass,
£42.50
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Celotex kingspan pir - kingspan,
£1200.00
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Universal plastic wall - universal,
£6.21
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100mm ecoloft non itch - 100mm,
£84.99
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Knauf insulation loft roll - knauf,
£42.00
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Self adhesive acoustic - self-adhesive,
£2.99
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Rolls aluminium foil - aluminium, tape
£46.99
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Aluminium foil tape - aluminium,
£72.95
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Kapton polyimide tape - kapton,
£131.99
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Loft insulation roll floor
£53.50
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140mm 100mm foil faced - 140mm,
£35.00
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White foam packing - white,
£228.00
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Rockwool thermal insulation - rockwool,
£88.18
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Rockwool acoustic thermal - acoustic,
£194.00
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Ecofleece thermo insulation - thermo,
£33.99
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Kapton polyimide tape - polyimide,
£154.00
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Polystyrene insulation eps70 - polystyrene,
£290.00
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Celotex kingspan pir - /,
£70.20
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Celotex pir insulation board - pir,
£69.08
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Aluminium foil tape - aluminium, rolls
£10.95
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50mm ethafoam stratocell - 50mm,
£1.59
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Celotex kingspan pir - celotex,
£598.00
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Closed cell high density - closed, foam
£128.98
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Black solid rubber flat strip - black,
£99.88
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Aluminium foil tape self - aluminium,
£9.49
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Cavity closers multi width - x,
£49.99
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Underfloor heating retro - underfloor,
£16.00
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10mm 150mm ceresit - [10mm, to
£67.50
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Kapton polyimide tape heat - polyimide,
£167.99
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Ursa cavity batt - cavity, 32
£24.99
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Heat shrink tubing electrical - shrink,
£49.99
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Kapton polyimide tape - tape, heat
£43.99
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Isover 100mm cws - isover,
£75.00
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25mm ethafoam stratocell - -,
£1.79
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Cavity closers multi width - cavity,
£39.99
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Underfloor heating retro edge - underfloor,
£480.00
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Rockwool acoustic thermal - rockwool,
£338.00
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100mm insulation - x, 90/100mm
£236.60
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Kapton polyimide tape heat - kapton,
£6.27
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Polystyrene eps insulation - 70,
£178.00
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Knauf insulation dritherm - knauf,
£59.10
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Xtratherm kingspan celotex - xtratherm,
£71.28
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Self adhesive acoustic - self-adhesive,
£1.99
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Aluminium foil tape - aluminium, 50m
£12.99
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Knauf loft insulation roll - insulation,
£53.50
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Polystyrene insulation sheets - insulation,
£310.00
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Marmox thermoblock insulation - marmox,
£52.00
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Fish barley paper - 1x,
£4.49
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Expanded polystyrene sheets - polystyrene,
£361.00
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Thermo duct insulation 100mm - thermo,
£22.99
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Pir insulation board 2400 - insulation,
£59.00
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Celotex kingspan insulation - kingspan,
£320.00
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Foamglas perinsul - , hl
£20.43
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Self adhesive acoustic - self-adhesive,
£199.99
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Rockwool rwa45 100mm acoustic - rockwool,
£352.07
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Isover acoustic partition roll - isover,
£52.70
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Looking for more insulation 100mm?
Search eBay live — fresh results filtered for the best value, updated every hour.
Browse 96 insulation 100mm listings currently in our index. Prices range from £1.59 to £1224, with an average of £186.8. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about insulation 100mm →
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Whether you are looking for a brand-new or second-hand insulation 100mm, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £1.59, while premium listings can reach £1224 — giving you a wide budget spread to work with. The average price of £186.8 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.