Remmers RM Restoration Mortar is a specialist mineral-based stone repair mortar designed for the restoration, reconstruction and re-profiling of damaged natural stone, brickwork, concrete and artificial stone. Developed for heritage conservation and architectural restoration, this high-quality repair mortar provides a durable and visually sympathetic solution for repairing weathered or deteriorating masonry.
Formulated with carefully selected mineral binders and aggregates, Remmers RM is designed to provide excellent adhesion, low internal stress and physical properties that can be matched to the existing masonry substrate.
Available in a range of natural stone and brick colours, the mortar allows damaged surfaces to be repaired while closely matching the appearance, texture and character of the original building materials.
Ideal for Natural Stone & Heritage Masonry Restoration
Traditional stone and brick buildings are exposed to decades of weathering, moisture movement and environmental deterioration. Over time, this can lead to surface erosion, damaged stone edges, missing architectural details and localised loss of masonry.
Remmers RM Restoration Mortar offers a practical alternative to replacing entire stone or brick units, allowing damaged areas to be carefully rebuilt and reshaped while preserving as much original material as possible.
The mortar is particularly suitable for sandstone restoration, brick repairs, stone window surrounds, architectural mouldings, cornices, decorative façades and historic masonry features.
Its low-stress formulation and choice of strength grades help ensure that repairs can be selected to suit the physical characteristics of the surrounding masonry.
Features & Benefits
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Specialist stone repair mortar – designed for restoring and rebuilding damaged natural stone, brick and mineral surfaces
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Excellent flank adhesion – provides reliable bonding to suitably prepared masonry edges
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Low inherent stress – helps minimise stress within repaired areas and surrounding masonry
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Colour-matched restoration – available in a wide selection of natural stone and traditional brick shades
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UV-resistant pigments – help maintain colour stability on exposed building façades
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Suitable for architectural detailing – ideal for reconstructing decorative stonework, mouldings and ornamental features
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Adjustable strength and grain size – allows the repair mortar to be selected to suit different masonry types
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Optional hydrophobic formulation – specialist versions can be manufactured with water-repellent properties
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Suitable for internal and external repairs – including heritage buildings and traditional masonry façades
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Ready-mixed dry mortar – provides consistent material proportions and straightforward onsite preparation
Typical Applications
Remmers RM Restoration Mortar is particularly suitable for:
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Natural stone restoration – repairing eroded, damaged or weathered stone surfaces
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Sandstone repairs – rebuilding lost profiles, edges and surface details
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Historic brick repairs – restoring damaged brick faces and missing sections
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Stone window surrounds – reconstructing damaged reveals, sills and decorative profiles
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Architectural mouldings – repairing cornices, string courses and decorative façades
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Ornamental stonework – reproducing carved details and architectural features
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Heritage building conservation – carrying out sympathetic localised repairs to historic masonry
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Concrete and artificial stone repairs – restoring compatible mineral building elements
Product Specifications
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Manufacturer: Remmers
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Product Type: Mineral Stone Repair & Replacement Mortar
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Material: Premixed Mineral Binders and Aggregates
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Suitable Substrates: Natural Stone, Brick, Concrete and Artificial Stone
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Application: Internal and External
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Approximate Consumption: 1.6kg per litre of repair volume
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Available Colours: Twelve listed standard stone and brick shades, with further colour options depending on specification
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Special Formulations: Custom colour matching and optional hydrophobic properties
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Pack Size: 15kg
Application Guidance
1. Prepare the Substrate
Remove loose, deteriorated or unsound material from the repair area. The remaining substrate should be clean, stable and capable of supporting the repair mortar.
2. Pre-Wet the Masonry
Dampen the prepared masonry as required by the manufacturer's instructions to help control suction and promote good bonding.
3. Apply a Contact Layer
Apply an approximately 2mm contact layer of suitably mixed material to the prepared surface.
4. Build Up the Repair
Apply Remmers RM onto the contact layer while still wet, typically in layers of approximately 15–30mm. Slightly overfill the repair area to allow for subsequent shaping.
5. Re-Profile the Surface
Once the mortar has firmed sufficiently, carefully scrape, carve or shape the repaired area to reproduce the original stone or brick profile and surface texture.
6. Protect During Curing
Protect fresh repairs from frost, rain and excessively rapid drying. Allow at least 24 hours before applying additional layers, following the manufacturer's recommendations.
Professional Stone Restoration for Traditional Buildings
Remmers RM Restoration Mortar provides an effective solution for repairing deteriorated stonework and architectural masonry while helping preserve the original appearance and character of traditional buildings.
Its combination of good adhesion, low inherent stress, colour-matching options and suitability for detailed restoration work makes it particularly valuable for stonemasons, conservation contractors, architects and heritage restoration specialists.
