Mississauga Retaining Walls

#1 Rated Retaining Wall Contractor in Mississauga ON

A Division of SB Excavation

647-277-2919

Frequently Asked Questions Mississauga

About Our Company & Process


Who is Mississauga Retaining Walls and what do you specialize in?

We’re a local contractor focused on durable, great‑looking retaining walls across Mississauga and the GTA. We build gabion, boulder, blast rock, concrete block (segmental), and poured concrete walls for residential and commercial clients.


What is your start‑to‑finish process?

Free phone consult → on‑site assessment → utility locate → design & itemized quote → permits/engineering (if required) → schedule → excavation & base prep → wall build with drainage → finish grading & cleanup → walkthrough & warranty.


Who will be my point of contact?

You’ll have a dedicated project coordinator who schedules site visits, answers questions, and provides updates from mobilization to final walkthrough.


Do you provide free estimates in Mississauga and the GTA?

Yes. We offer a free on‑site assessment and an itemized, fixed‑scope quote with options where appropriate.


How soon after I approve the quote can you start?

Season and permitting drive start dates. We provide a schedule window in your proposal and lock dates once permits (if needed) and materials are confirmed.



Permits, Codes & Engineering (Mississauga/GTA)


Do I need a permit for a retaining wall in Mississauga?

Walls over certain heights, near property lines, or supporting driveways/structures often require permits and engineering. We coordinate applications and keep your project compliant.


When is engineering required?

Typically for taller walls, tiered walls acting as one system, surcharge loads (parking, buildings), or walls near slopes/watercourses. We work with licensed engineers.


Will you handle utility locates?

Yes. We arrange locates before excavation to protect gas, hydro, water, and telecom lines.


Can you help with conservation authority approvals?

Where sites are near ravines, creeks, or regulated lands, we assist with drawings and submissions to the relevant authority.


Do you provide drawings for condo boards or commercial approvals?

Yes—stamped drawings (when required), specs, and method statements for property managers and boards.



Materials & Design Choices


Which retaining wall type is best for my property?

We recommend based on height, loads, soils, drainage, access, budget, and desired look. Options include gabion, boulder, blast rock, segmental concrete block, and poured concrete.


Can you match existing masonry or landscape style?

Often yes. We source blocks/stone profiles and colours to complement your home, or design a contrasting modern look.


Can you build curves, corners, stairs, and terraces?

Absolutely. We design flowing radii, inside/outside corners, integrated steps, landings, and tiered terraces.


Do you offer railings, fencing sleeves, or lighting?

Yes—guardrail sleeves, post details, cap lighting, and step lights can be incorporated during design.



Gabion Retaining Walls


What are gabion retaining walls and where do they work best in the GTA?

Wire baskets filled with rock that retain soil through mass and drainage—excellent for erosion control, creek banks, and naturalized landscapes.


What basket and rock materials do you use?

Heavy‑gauge galvanized or PVC‑coated mesh with geotextile and locally sourced angular rock for tight interlock and long life.


Do gabions require permits or engineering?

Heights, loads, and proximity to water/lot lines govern requirements. We coordinate engineering and approvals when needed.

How are gabions installed?

Compacted base → set and tie baskets → brace corners → fill rock in lifts for a clean face → drainage and fabric behind → cap or step as designed.


How do gabions compare to block walls?

They offer superior drainage and a rugged, natural aesthetic. Mesh visibility is part of the look; coatings manage corrosion exposure.



Boulder Retaining Walls


What is a boulder retaining wall and when is it a good choice?

Walls built from large natural stones (granite/limestone) that rely on mass and interlock—great for organic aesthetics and challenging, rocky sites.


Are boulder walls engineered?

Short garden walls may not need engineering; taller or load‑bearing walls can be engineered with geogrid and specified stone sizes.


What finish can I expect?

An organic, varied face. For crisp lines, consider segmental block; for a natural look, boulders excel.


Do boulder walls need drainage?

Yes—compacted base, drainage rock, geotextile, and outlets to relieve hydrostatic pressure.



Blast Rock Retaining Walls


What are blast rock walls?

Walls constructed from fractured rock sourced from excavation/quarries. They deliver a rugged look and can be cost‑effective where rock supply and access align.


When is blast rock preferred over modular systems?

On sites with rock readily available, long runs, or when a natural stone face is desired without the cost of premium boulders.


Do blast rock walls require special equipment?

Yes—machines for handling large pieces and precise placement; we plan access and staging in your quote.


Are blast rock walls durable in freeze–thaw?

With proper drainage and interlock, they perform well through GTA winters.



Concrete Block (Segmental) Retaining Walls


What are segmental concrete block walls?

Engineered systems of interlocking blocks without mortar, built on a gravel base with drainage and, when designed, geogrid layers.


How tall can a segmental wall be?

Product and site dependent; many systems allow modest heights without engineering and greater heights with engineering and geogrid.


What design options exist?

Multiple colours, textures, cap styles, curves, tiers, and integrated stairs for clean, modern lines.


What maintenance is required?

Minimal—keep outlets clear, manage surface water, and inspect caps/joints annually.



Poured Concrete Retaining Walls


When is a poured concrete wall the right choice?

When you need maximum strength, tight setbacks, or a continuous, modern appearance.


How do you control cracking?

Proper rebar, expansion/control joints, curing, waterproofing, and robust drainage.


What finishes are available?

Smooth, broom, board‑form textures, architectural liners, or stone/brick veneers.


Do poured walls require footings and permits?

Yes—engineered footings and permits are typical for structural poured walls. We manage the process.



Drainage, Foundations & Soil


Why is drainage so critical for retaining walls in the GTA?

Proper drainage reduces hydrostatic pressure and prevents freeze–thaw damage, extending wall life.


What’s included in your standard drainage assembly?

Compacted granular base, perforated drain tile to a free‑flow outlet, clean crushed backfill, and geotextile fabric separating native soils.


Do you use geogrid reinforcement?

When specified by design/engineering to increase stability on taller or loaded walls.


How do you handle poor soils or soft spots?

We increase base depth, improve subgrade, or use geotextile separation and grid reinforcement per design.



Access & Site Challenges


Can you build on tight lots or through narrow side yards?

Yes—mini‑excavators, conveyors, and phased delivery minimize disruption and protect finishes.


What if bedrock or buried debris is discovered?

We’ll review options: rock breaking, wall alignment adjustments, or alternative wall types; changes are priced transparently.


Can you protect driveways, lawns, and gardens during work?

We use mats, plywood, and clear access routes; daily cleanup keeps the site tidy.



Pricing, Quotes & Payments


How do you price a retaining wall project?

By wall type, height/length, access, excavation/disposal, drainage, geogrid, stairs/railings, finishes, and permit/engineering scope—detailed in an itemized quote.


Can you provide ballpark pricing?

Yes, with photos and rough dimensions. Final pricing follows an on‑site assessment to confirm soils, access, and drainage needs.


What payment schedule do you use?

Typically a deposit to secure materials/dates, progress draw(s) at milestones, and balance on completion after the walkthrough.


Do you offer options to fit different budgets?

We can value‑engineer materials, heights, and finishes while keeping safety and durability intact.



Timelines & Scheduling


How fast can you get me a quote?

Usually within 48–72 hours of the site visit, depending on complexity and engineering needs.


How long do builds take?

Small residential walls: 2–6 days. Large/engineered or poured concrete walls: 1–3+ weeks. Weather and access can affect schedules.


Do you work year‑round?

Yes, with adjustments for winter conditions. Some concrete finishes require suitable temperatures; we’ll advise on timing.



Repairs, Replacements & Upgrades


Can you repair a leaning or bulging wall?

We assess base and drainage, then recommend targeted repairs or a full rebuild to current standards.


Do you handle demolition and disposal of old walls?

Yes—removal, disposal, site preparation, and rebuild are included in our proposals.


Can you add stairs, landings, or railings to an existing wall?

Often yes. We evaluate structure and propose compliant details.



Maintenance & Aftercare


What routine maintenance should I plan for?

Keep drain outlets clear, maintain positive surface grading, control vegetation near joints, and clean caps as needed.


Do you offer seasonal inspections?

Yes—optional check‑ups to verify drainage, outlets, and surface grading after winter.


How do I spot early signs of trouble?

Leaning, bulges, separated caps, sinkholes behind the wall, or excessive weeping—contact us for an assessment.



Sustainability & Stormwater


Are your solutions environmentally conscious?

We prioritize durable materials, efficient logistics, and designs that manage stormwater responsibly with proper outlets and grading.


Can retaining walls help with erosion and runoff?

Yes—walls paired with drainage, swales, and plantings can stabilize slopes and direct water safely.


Do you reuse on‑site materials?

Where appropriate and compliant, we may reuse suitable rock for boulder or blast rock walls to reduce trucking.



Safety & Compliance


How do you maintain a safe jobsite?

Barriers, signage, PPE, equipment checks, and clear homeowner communication. We’re insured and follow applicable codes.


Will work affect neighbours or traffic?

We plan staging and access to minimize impact, and coordinate with neighbours when needed.


Do you call before digging?

Yes—utility locates are standard before excavation.



Winter & Weather Considerations


Do GTA freeze–thaw cycles affect walls?

Yes; that’s why we emphasize drainage, proper base depth, and compaction to reduce movement and heave.


Can work proceed in winter?

Often yes for segmental and boulder/gabion walls; concrete pours may require heat/blankets or scheduling around cold snaps.


How does heavy rain impact scheduling?

We avoid working saturated subgrades; if rain impacts compaction, we reschedule to protect quality.



Commercial, Municipal & Multi‑Unit Projects


Do you build for commercial sites and property managers?

Yes—parking lots, loading areas, multifamily terraces, and municipal works with engineered submittals and phased scheduling.


Can you meet tender or spec requirements?

We provide submittal packages, insurance, WSIB, and safety documentation as required.


Do you coordinate with other trades?

Yes—site meetings and sequencing to align with grading, paving, and landscaping contractors.



Service Area & Getting Started


What areas do you serve?

Mississauga and the GTA—including Toronto, Etobicoke, Brampton, Oakville, Milton, Burlington, and nearby communities.


What should I include with my inquiry?

Address, rough wall length/height, preferred wall type (if known), photos of the site and access, and your target timeline.


How do I book a site visit?

Call us or use the form at mississaugaretainingwalls.com. We’ll confirm a time, review goals, and follow with an itemized quote.


Ready to discuss your retaining wall?

Contact Mississauga Retaining Walls for a free on‑site assessment and a clear, itemized proposal. We’ll recommend the most effective solution—gabion, boulder, blast rock, segmental concrete block, or poured concrete—to fit your property, budget, and style.