Importance of correct pointing methodology for old brickwork

Article

Proper pointing methodology is crucial for maintaining the structural integrity of old brickwork because the mortar between bricks acts as a key component in the overall stability of the wall. Over time, weathering and decay can erode the mortar, potentially allowing moisture to penetrate, which weakens the structure and can lead to issues such as damp, frost damage, or even collapse. Using appropriate techniques and materials for repointing ensures that the wall retains its strength while preventing further deterioration. Importantly, the mortar used must be compatible with the original materials, as modern, harder mortars can damage softer historic bricks by trapping moisture and causing spalling.

From an aesthetic perspective, correct pointing enhances the visual appeal of old brickwork by maintaining its original character and craftsmanship. The style and color of the mortar joints significantly impact the overall look of the wall, and mismatched or poorly executed pointing can detract from the historic charm of the structure. Traditional pointing techniques, such as lime mortar repointing, not only preserve the authentic appearance but also allow the building to "breathe," managing moisture more effectively. By respecting the original construction methods and materials, proper pointing preserves both the beauty and the heritage of old brickwork.

Pointing involves filling the joints between bricks with mortar, which serves several essential functions:

• Weather Protection: Correctly applied mortar prevents water ingress, safeguarding the building from moisture-related damage such as dampness, mold, and structural decay. Trustmark Roofing and Building

• Structural Stability: Mortar binds bricks together, contributing to the overall strength and stability of the structure. Deteriorated or improperly applied mortar can lead to loose bricks and compromised structural integrity. Historic England

• Aesthetic Preservation: Appropriate pointing maintains the historical character and appearance of brickwork, which is especially important for heritage buildings. Unsuitable repointing can detract from a building's visual appeal and may even cause damage. SPA British Society

In London, several reputable firms specialize in brick pointing and restoration services:

London Repointing & Restoration Ltd London, UK Specializes in tuck pointing, ribbon pointing, brick cleaning, and paint removal with over 30 years of experience on period properties.

Restore Repoint Repair Ltd London, UK Offers bespoke brick repointing and stone restoration services, utilizing historic and traditional methods. 

Pointing by Tony Wallace London, UK Provides brick cleaning and repointing services, with expertise in various pointing techniques and methods.  

S.J. Pointer London, UK A family-run company offering brick cleaning and pointing restoration services, with over 20 years of experience. 

MMR Pointing London specializes in repointing, brick cleaning, lime mortar pointing, and chimney repair services.

Engaging experienced professionals ensures that repointing is performed correctly, preserving both the functionality and historical value of old brickwork.

Publications

Proper pointing—the technique of finishing mortar joints between bricks—is crucial for the preservation and aesthetic integrity of historical brickwork. Several authoritative publications provide in-depth guidance on this subject:

1. "Repointing Brick and Stone Walls" by Historic England: This guide offers comprehensive advice on assessing the need for repointing, selecting appropriate materials, and executing the process to maintain the character and durability of historic masonry.

2. "Repointing" by the Society for the Protection of Ancient Buildings (SPAB): SPAB's publication emphasizes the significance of using compatible materials and techniques in repointing to prevent damage to historic structures.

3. "Joint Finishes on Historic Brickwork" by Gerard Lynch: Published in the Building Conservation Directory, this article delves into traditional jointing and pointing methods, highlighting their impact on the appearance and longevity of historic brick facades.

4. "Brickwork: Historic Development and Repair" by Gerard Lynch: This detailed examination traces the evolution of brickwork over six centuries, offering insights into conservation and repair practices essential for maintaining historical integrity.

5. "The Benefits of Brickwork Pointing: Comprehensive Guide" by Trustmark Roofing and Building: This guide outlines the advantages of proper pointing, including its role in preventing water penetration and enhancing the structural stability of historic buildings.

These resources provide valuable information for anyone involved in the maintenance, conservation, or restoration of historic brick structures, ensuring that interventions are both sympathetic and effective.