Historic masonry buildings are an important part of Cleveland and Northeast Ohio’s architectural character. From century-old commercial buildings to historic industrial facilities, these structures reflect construction techniques and craftsmanship that have stood the test of time.

However, maintaining these buildings requires a different approach than repairing modern masonry.

Older brick, stone, and mortar often have different physical characteristics, and traditional wall assemblies manage moisture differently from contemporary construction.

Successful historic masonry restoration isn’t about making an old building look new. It’s about understanding how it was originally built and preserving the materials, performance, and architectural details that make it unique.

Here’s why historic masonry requires specialized attention.

1. Historic Masonry Was Built Differently

Many historic masonry buildings were constructed using materials and techniques that differ significantly from modern building practices.

Common characteristics include:

  • Older, sometimes softer brick
  • Natural stone with varying properties
  • Traditional lime-rich mortar
  • Solid masonry wall construction
  • Limited or absent modern drainage cavities
  • Handcrafted architectural details

Unlike many modern wall assemblies, which incorporate dedicated drainage and moisture barriers, traditional solid masonry walls often manage moisture through absorption and evaporation.

This means materials must be able to accommodate moisture movement without trapping water within the wall.

Understanding these characteristics is essential before selecting restoration materials or repair techniques.

2. Mortar Compatibility Is Critical

One of the most common mistakes in historic brick restoration is using mortar that isn’t compatible with the original masonry.

Mortar does more than hold bricks together. It also accommodates movement and influences how moisture travels through a wall.

Many older buildings were constructed with relatively soft, lime-rich mortar that allows moisture to evaporate through the joints.

Modern cement-rich mortars can be significantly harder and less permeable.

When an overly strong mortar is used with softer historic brick, it may restrict moisture movement or place additional stress on surrounding masonry.

Over time, this can contribute to:

The right mortar isn’t necessarily the strongest mortar. It’s the one that’s compatible with the existing masonry.

Professional mortar evaluation helps determine appropriate strength, composition, permeability, and appearance before repointing begins.

3. Moisture Management Requires Special Consideration

Water is one of the greatest threats to historic masonry buildings.

Rainwater penetration, deteriorated mortar joints, failed flashing, and poor drainage can allow moisture to enter exterior walls.

During Northeast Ohio winters, repeated freezing and thawing can make existing problems worse.

Historic masonry restoration must consider how moisture enters, moves through, and exits the wall assembly.

Applying an inappropriate waterproof coating or sealant may interfere with natural drying and trap moisture within the masonry.

That doesn’t mean water-repellent treatments are always unsuitable. However, their use should be evaluated carefully based on the building’s materials and existing conditions.

Effective moisture management often begins with repairing mortar joints, correcting drainage problems, and addressing deteriorated flashing or coping.

4. Preservation Should Come Before Replacement

Historic masonry restoration is about preserving as much sound original material as practical.

Replacing older brick or stone unnecessarily can alter a building’s appearance and introduce materials that behave differently from the original construction.

Preservation-focused restoration may involve:

  • Selective mortar repointing
  • Localized brick replacement
  • Stone patching and repairs
  • Stabilizing deteriorated masonry
  • Preserving decorative architectural features
  • Repairing existing materials where feasible

When replacement is necessary, new materials should be selected for compatibility with the surrounding masonry.

The objective isn’t to erase every sign of age. It’s to maintain the building’s structural integrity, weather resistance, and historic character.

5. Historic Facades Require Careful Cleaning and Repair

Cleaning an older masonry facade may seem straightforward, but aggressive methods can cause permanent damage.

High-pressure washing, abrasive cleaning, harsh chemicals, and improper grinding can remove protective surfaces or damage softer historic materials.

Once the outer surface of a brick or stone unit is compromised, it may become more vulnerable to moisture and deterioration.

Historic facades may also feature intricate brick patterns, carved stone, decorative cornices, and other details that require additional care.

Before cleaning or restoration begins, contractors should evaluate the masonry and test proposed methods in small, inconspicuous areas.

Using the least aggressive effective approach helps preserve original materials while achieving the desired results.

6. Identifying the Root Cause of Damage Is Essential

Visible masonry deterioration isn’t always the original problem.

Cracked brick, deteriorating mortar, or moisture staining may result from issues elsewhere in the building envelope.

Potential causes include:

  • Failed roof flashing
  • Damaged parapet coping
  • Poor drainage
  • Building movement
  • Trapped moisture
  • Previous incompatible repairs

For example, replacing deteriorated brick along a parapet wall won’t necessarily solve the problem if damaged coping continues allowing water into the wall assembly.

Without addressing the underlying source of moisture, the same deterioration may return.

A comprehensive assessment helps identify contributing conditions and develop restoration solutions that address both the visible damage and its cause.

7. Historic Restoration Requires Long-Term Planning

Historic masonry restoration often requires a more deliberate approach than routine exterior repairs.

A successful restoration strategy may include:

  • Comprehensive condition assessments
  • Documentation of existing materials
  • Mortar analysis and compatibility testing
  • Prioritizing necessary repairs
  • Phased restoration planning
  • Ongoing inspections and maintenance

Some designated historic properties may also be subject to local preservation review or applicable historic preservation requirements.

For commercial property owners, planning helps balance immediate building needs with long-term preservation goals and capital budgets.

Addressing deterioration early can help preserve original materials and reduce the need for more extensive restoration later.

Protecting Cleveland’s Historic Masonry Buildings

Cleveland and Northeast Ohio are home to historic commercial, institutional, and industrial buildings that require thoughtful maintenance and restoration.

At Cleveland Building Restoration, we understand the importance of evaluating existing masonry conditions before determining the appropriate repair approach.

Our masonry restoration, tuckpointing, facade repair, and waterproofing services help commercial property owners address deterioration and protect their building exteriors.

As part of Extera Building Solutions, we also recognize how roofing, masonry, flashing, and other building envelope systems work together to protect a structure.

Restore the Building Without Losing What Makes It Historic

Historic masonry buildings deserve restoration strategies that respect their original construction.

By selecting compatible materials, managing moisture appropriately, preserving sound masonry, and addressing the underlying causes of deterioration, property owners can protect both the performance and architectural character of their buildings.

Cleveland Building Restoration helps property owners evaluate masonry deterioration and develop restoration solutions suited to their building’s needs.

Contact our team to discuss your historic masonry restoration project.

Frequently Asked Questions

What is historic masonry restoration?

Historic masonry restoration involves repairing and preserving older brick, stone, mortar, and related building components using materials and techniques compatible with the original construction. The goal is to maintain structural integrity, weather resistance, and architectural character.

Why can’t modern mortar always be used on historic brick?

Some modern mortars are harder and less permeable than traditional lime-rich mortars. When used with softer historic brick, incompatible mortar can contribute to trapped moisture, cracking, and spalling. Mortar should be selected based on the existing masonry’s characteristics.

Should damaged historic bricks always be replaced?

No. Sound original masonry should generally be preserved whenever practical. Localized repairs may be appropriate, while severely deteriorated bricks may require replacement with materials compatible in strength, size, appearance, and moisture behavior.

Can historic masonry buildings be waterproofed?

Historic masonry can benefit from appropriate moisture-management measures, including repointing, flashing repairs, and drainage improvements. Water-repellent treatments may be suitable in certain situations, but they should be evaluated carefully to avoid trapping moisture within the wall.

How often should historic masonry buildings be inspected?

Historic masonry should be evaluated regularly, often at least annually for exposed or vulnerable areas, with additional inspections after significant weather events or when deterioration appears. The appropriate frequency depends on the building’s condition, materials, and exposure.