With a wealth of knowledge & experience, Cornerstone challenges the one-size-fits-all approach with a diverse range of lime-based products.
While lime has been used for centuries, the Cornerstone team knows the future lies in innovation and meeting the industry's evolving needs. Working collaboratively with their team, clients, and suppliers, they aim to meet the industry's complex needs with lime-based products that are accessible, efficient, and consistent in performance, all while meeting the needs of those working with the materials on the ground. Supplying lime mortars, renders, and plasters worldwide, Cornerstone's products have made their way onto prestigious buildings and famous landmarks across the globe.
While lime has been used for centuries, the Cornerstone team knows the future lies in innovation and meeting the industry’s evolving needs. Working collaboratively with their team, clients, and suppliers, they aim to meet the industry’s complex needs with lime-based products that are accessible, efficient, and consistent in performance, all while meeting the needs of those working with the materials on the ground. Supplying lime mortars, renders, and plasters worldwide, Cornerstone’s products have made their way onto prestigious buildings and famous landmarks across the globe.
Explore the range
Cornerstone Insulating Render
A fibred render & plaster to enhance thermal performance moisture management in a white finish.
£16.48 £19.78 Inc VAT
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Cornerstone SuperTherm Plaster
An ultra-lightweight and low density fibred plaster for the thermal insulation of solid walls.
£22.85 £27.42 Inc VAT
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Cornerstone Promix Bonding Coat Render & Plaster
A coarse texture and buff colour for challenging backgrounds or as a highly textured finish.
£13.75 £16.50 Inc VAT
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Cornerstone Promix Traditional Basecoat Render
A traditional coarse texture and buff coloured finish for a coarse basecoats or float coats.
From £13.75 £16.50 Inc VAT
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Cornerstone Promix Coarse Basecoat Render & Plaster
A coarse basecoat with white finish for basecoats, float coats or textured finish coats.
From £13.75 £16.50 Inc VAT
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Cornerstone Promix Fibered Basecoat Render & Plaster
A fibred basecoat for improved stress distribution to reduce cracking and plastic shrinkage.
From £13.85 £16.62 Inc VAT
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Cornerstone Promix Medium Topcoat Render & Plaster
A traditional medium textured topcoat with a tan finish for internal or external finish coats.
£13.75 £16.50 Inc VAT
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Cornerstone Promix Fine Topcoat Render & Plaster
A fine textured topcoat with a light brown finish for internal and external finish coats.
£13.75 £16.50 Inc VAT
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Cornerstone Drymix Coarse Mortar
A coarse texture and refined buff coloured finish, well-suited for stonework and large joints.
From £13.31 £15.97 Inc VAT
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Cornerstone Promix Superfine Finishing Plaster
A popular superfine texture and off-white finish for a smooth and satisfying internal finish.
£15.25 £18.30 Inc VAT
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Cornerstone Drymix Medium Mortar
A buff mortar with medium texture for a traditional finish well-suited for various joint sizes.
From £13.31 £15.97 Inc VAT
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Cornerstone Drymix Brickwork Mortar
A medium textured and buff coloured mortar for porous high-suction bricks.
From £14.99 £17.99 Inc VAT
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Cornerstone Drymix Pointing Gun Mortar
A buff mortar with a medium texture and or efficiency, precision and a speedy finishing time.
£15.55 £18.66 Inc VAT
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Cornerstone Drymix Tamar Blend Mortar
A pale grey mortar replicating the historic mortars of the Southwest's Tamar Region.
£15.77 £18.92 Inc VAT
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Cornerstone Newbuild Coarse Mortar and Render
A multipurpose hydraulic lime mortar & render with a coarse texture & buff finish for pointing.
From £14.15 £16.98 Inc VAT
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Cornerstone Newbuild Medium Mortar and Render
A multipurpose hydraulic lime mortar & render with a medium texture & buff finish for pointing.
From £14.15 £16.98 Inc VAT
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Cornerstone Lime Paint
A collection of traditional lime paints with a natural matte finish. Available in 0.1L, 5L.
From £3.42 £4.10 Inc VAT
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Cornerstone Newbuild Medium Cement Free Mortar
A cement-free lime mortar with the strength of modern 1:2:9 mortars & a heritage aesthetic.
£16.48 £19.78 Inc VAT
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Cornerstone Performance Torching Render
A fibered torching render for back plastering slate or natural roofing tiles with a speedy set.
£20.10 £24.12 Inc VAT
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Cornerstone Performance Tyrolean Render
A robust decorative and protective weather-resistant render with a distinctive textured finish.
£16.09 £19.31 Inc VAT
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Cornerstone Performance Roofline Medium Fast Set Mortar
A quick-setting mortar for rooflines requiring support against slump, sag or a same day finish.
£16.48 £19.78 Inc VAT
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Cornerstone Performance Roofline Medium Mortar
A fast-setting mortar for above the roofline, including hip tiles or the bedding ridge.
£16.48 £19.78 Inc VAT
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Cornerstone Performance Scantle Mix Mortar
A fibred and flexible mortar with for bedding natural slate in traditional roof applications.
£17.31 £20.77 Inc VAT
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Cornerstone Performance Tanking Render
A fast-setting, waterproof and sulphate-resistant render for internal areas exposed to water.
£21.00 £25.20 Inc VAT
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Cornerstone Performance Wintermix Mortar & Render
A multipurpose mortar and render for rapid initial strength gain to support frost resistance.
£16.09 £19.31 Inc VAT
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Cornerstone Performance Woodlath Render
A fibered basecoat lime render for traditional woodlath with a speedy and secure set.
£17.77 £21.32 Inc VAT
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Cornerstone Heritage MK Coarse Mortar and Render
A multipurpose high free-lime mortar for an ultra-breathable & porous alternative to hot mix.
£15.77 £18.92 Inc VAT
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Cornerstone Heritage MK Medium Mortar and Render
A multipurpose high free-lime mortar for an ultra-breathable & porous alternative to hot mix.
£15.77 £18.92 Inc VAT
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Cornerstone Heritage Trass Coarse Mortar and Render
A multipurpose high vapour permeability & low capillary water absorption for exposed areas.
£15.77 £18.92 Inc VAT
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Cornerstone Heritage Trass Medium Mortar and Render
A multipurpose high vapour permeability & low capillary water absorption for exposed areas.
£15.77 £18.92 Inc VAT
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Cornerstone Marine L4 Mortar
A lime mortar for exposed applications above water level, with an extended open time.
£14.98 £17.98 Inc VAT
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Cornerstone Marine LP6 Mortar
A natural cement and lime mortar for weaker substrates requiring a lower strength and fast set.
£15.48 £18.58 Inc VAT
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Cornerstone Marine LP8 Mortar
A natural cement and lime mortar for masonry requiring an NHL-strength mortar but a fast set.
£16.01 £19.21 Inc VAT
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Cornerstone Marine P10 Mortar
The lowest strength natural cement mortar in the Marine range with a speedy set time.
£16.24 £19.49 Inc VAT
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Cornerstone Marine P15 Mortar
Our most popular water-resistant natural cement marine mortar with a speedy set time.
£16.99 £20.39 Inc VAT
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Cornerstone Marine P30 Mortar
A water-resistant natural cement mortar for areas requiring strength without being waterproof.
£19.00 £22.80 Inc VAT
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Cornerstone Marine P50 Mortar
A natural cement mortar for aggressive areas requiring high strength without being waterproof.
£21.00 £25.20 Inc VAT
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Cornerstone Marine P60 Mortar
A robust waterproof and chemically resistant mortar for heavily polluted environments.
£24.61 £29.53 Inc VAT
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Cornerstone Ultra-Low Strength Masonry Grout
Our popular lowest strength and highest breathability fine textured CL90 hydrated lime grout.
£27.46 £32.95 Inc VAT
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Cornerstone Low Strength Masonry Grout
A ready mixed NHL2 lime grout for the void filling and consolidation of solid masonry walls.
£26.82 £32.18 Inc VAT
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Burnt Sand Mastic
For forming weather-tight joints between timber window & door frames, render or masonry.
From £38.15 £45.78 Inc VAT
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Cornerstone Medium Strength Masonry Grout
A fine ready mix NHL3.5 lime grout for a balanced approach between strength and breathability.
£26.82 £32.18 Inc VAT
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Cornerstone High Strength Masonry Grout
A ready mixed NHL5 lime grout for the void filling and consolidation of solid masonry walls.
£27.46 £32.95 Inc VAT
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Cornerstone Powder Fine Surface Filler
A fast-setting natural cement and lime filler for small cracks and blemishes with a tan finish.
From £6.89 £8.27 Inc VAT
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Cornerstone Putty Fine Surface Filler
Well-suited for lime plaster walls and ceilings with minor cracks or surface imperfections.
From £8.81 £10.57 Inc VAT
View OptionsHow-to guides & articles
Insulating Older Buildings
Learn the ins and outs of insulation in solid-walled buildings and things to consider for moisture management and thermal comfort.
Lime for Contemporary Construction
Discover the versatility of lime in contemporary construction, including how it can enhance moisture management and thermal comfort.