Expert Masonry Window Openings for Residential & Commercial Properties

At Red Clay, we deliver precise, safe, and high-quality window openings in masonry walls across the GTA and Ontario. From new openings to enlargements in brick or block walls, we provide expert structural support, clean finishes, and reliable results for both residential and commercial projects.
Window Openings in Masonry

Why Choose Professional Window Openings in Masonry?

When you need a window opening in masonry walls, the job is far more than cutting through brick. At Red Clay Masonry, we know these walls carry loads, face constant weather exposure, and require proper support to prevent structural issues. Poorly done openings can cause water leaks, heat loss, cracking and unattractive finishes.

In contrast, a professionally executed masonry opening for windows from Red Clay Masonry ensures:

  • The structural integrity of the wall is maintained or improved.
  • Proper support (lintels or engineered beams) is placed above the opening.
  • Flashing, sealants and drainage details are correctly installed to prevent leaks or freeze-thaw damage.
  • The finished opening is square, clean and ready for the window installation.
    In Ontario’s changing weather and colder climate, quality matters—and selecting a trusted masonry contractor for brick window opening services is the smart choice.

Clean, Seamless Masonry Finishing for All Window Openings

We deliver full-service solutions for brick window opening services, catering to both residential and commercial clients. Whether you need a new opening, an enlargement or closing up an existing window, we have you covered. Our service area includes the Greater Toronto Area (GTA) and municipalities across Ontario.

Residential and Commercial Window Openings

Residential and commercial window openings across the GTA, from enlarging home windows to storefront modifications and new masonry openings. Safe, clean, and structurally sound results every time.

  • Residential: Opening up a living room wall for a larger window, replacing a small bedroom window with a modern unit, or closing an old opening entirely.

  • Commercial: Store-front alterations, use of larger glazing units in masonry walls, or retro-fitting older buildings with new openings.
  • Across the GTA Ontario: From suburban homes, urban townhouses, to office and commercial buildings in downtown and surrounding cities.
Residential and commercial window openings

Brick & Block wall openings

We create precise brick and block wall openings across the GTA, handling full masonry window opening services—from assessment and structural support to lintel installation, finishing, and waterproofing.

Window openings in masonry walls: We work with brick, block, stone and mixed masonry walls.

Brick window opening across GTA Ontario: Whether you’re in Toronto, Mississauga, Brampton, Vaughan or beyond, our crews are local, experienced and responsive

Masonry opening for windows: We handle the full process – from assessment, temporary supports, structural reinforcement, lintel installation, brick or block finishing and waterproofing.

wall openings

How Our Window Opening Process Works

Our process for creating masonry openings for windows is methodical, transparent and designed to minimise disruption while maximising quality. Here’s what to expect when we perform your window opening masonry Ontario job:

  1. Assessment & Planning – We inspect the masonry, evaluate load paths, check brick and mortar condition, identify obstructions, and determine the exact size and support required for the new opening.

  2. Structural Support & Permits – We install proper lintels or engineered beams and handle permits when needed, ensuring the opening meets Ontario building codes and structural standards.

  3. Controlled Masonry Removal – Our team safely cuts and removes brick or block while protecting surrounding areas, managing dust, and ensuring clean, precise demolition.

  4. Support Installation & Opening Prep – We set structural supports, add flashing and drainage, and prepare a plumb, level, and fully ready window opening.

  5. Finishing & Final Clean-Up – We rebuild surrounding masonry, repoint joints, seal edges, verify waterproofing, and leave the site clean and ready for window installation.

Window Opening Process

Key Considerations for Window Openings in Masonry Walls

Correct Lintel & Support Sizing
Proper lintel selection is crucial. The span, wall load, and masonry type determine the support needed to prevent cracking or structural failure.
Correct Lintel & Support Sizing - Redclay
Moisture Control & Flashing
Window openings are vulnerable to water infiltration. Correct flashing, weep holes, and sealants are essential to protect against leaks and freeze-thaw damage.
Assessing Wall Condition
Moisture Control & Flashing
Window openings are vulnerable to water infiltration. Correct flashing, weep holes, and sealants are essential to protect against leaks and freeze-thaw damage.
Moisture Control & Flashing - Clay
Insulation & Thermal Performance
Ontario’s climate requires careful detailing to reduce heat loss and prevent condensation around the new opening.
Insulation & Thermal Performance
Seamless Masonry Finishing
After creating the opening, we blend new masonry with the existing façade to ensure a clean, cohesive finish that maintains the building’s appearance.
Seamless Masonry Finishing

Specialized Window Openings for Every Property Type

Residential Window Openings

Homeowners often request new or enlarged window openings to: improve natural light, enable sliding or French doors, convert wall space to windows, or replace old single-pane windows with larger modern configurations. We assist with:

  • Single-family homes with brick or block façades
  • Townhouses, semi-detached homes, multi-unit residential
  • Heritage brick homes requiring sensitive detail work

    In each case, our focus is on quality finishing, disruption minimisation, and clean transitions so the new opening blends with the home’s aesthetic.

Commercial Window Openings

On the commercial side, we support businesses, institutions and property managers who need:

  • Storefront window openings in brick walls
  • Office façades requiring new or expanded openings for glazing

Multi-story buildings needing coordinated access, structural support and timeline control Commercial projects often require coordination with glazing contractors, building engineers and property managers — we bring that experience and logistical capacity to the job.

Our Service Types: Residential & Commercial
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