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We provide masonry waterproofing in New Orleans, LA, protecting brick, block, and stone walls from wind driven rain and moisture intrusion. Using clear sealers, elastomeric coatings, and parapet treatments, we help extend the life of your building envelope and reduce interior water issues.
Superior Masonry New Orleans provides professional masonry waterproofing throughout New Orleans, LA, Louisiana and the surrounding area. Our licensed, insured crew delivers safe, clean, on-time work with a free estimate before anything begins. Call (504) 321-4818 or request your free quote.
Masonry Waterproofing That Works In New Orleans Conditions
New Orleans is tough on brick, block, and stone. Long rainy seasons, sudden downpours, and high humidity keep masonry saturated for months at a time. Superior Masonry New Orleans focuses on masonry waterproofing that is built specifically for this climate, not just a generic sealer that will peel off after one storm.
We start by looking at how water is actually getting into your masonry, not just where stains appear. In this area, we see a lot of hairline cracks from settling on older homes, porous soft brick in historic districts, and mortar joints that have worn away from years of moisture and heat. We inspect walls from top to bottom, check the condition of weep holes, flashing, sills, capstones, and any roof-to-wall transitions.
Instead of selling a single product as the solution for every problem, we use different waterproofing systems for different types of masonry and exposure. Exterior brick facing Lake Pontchartrain may need a breathable siloxane water repellent, while a low garden wall that sits in damp soil may require a heavier-duty coating and drainage improvements. We match the system to the actual conditions on your property so the waterproofing does not trap moisture inside your wall.
Our Step-by-Step Masonry Waterproofing Process
Superior Masonry New Orleans follows a repeatable process so you know exactly what is happening to your home or building.
1. Assessment and moisture mapping. We look for efflorescence (white mineral deposits), spalling brick, dark damp areas, and interior wall damage. When needed, we use moisture meters to compare readings at different heights and sides of the structure to track active leaks.
2. Surface and joint repairs. Waterproofing over damaged masonry is wasted money. We repoint loose mortar joints, replace cracked bricks or blocks, and repair or re-bed coping stones. On older New Orleans homes, we pay special attention to lime-based mortars and match them so the patch does not cause future cracking.
3. Cleaning and prep. We remove mold, mildew, dirt, and old failing coatings with the mildest cleaning method that will work. This usually means low-pressure washing combined with masonry-safe cleaners or biocides. For historic brick, we avoid harsh acids that can permanently etch the surface.
4. Selecting the right product. For vertical exterior walls, we usually recommend a penetrating silane or siloxane repellent that allows the masonry to breathe while stopping liquid water. For parapets, sills, and wall caps that see standing water, we often use an elastomeric or urethane coating that bridges small hairline cracks. In basements or foundation walls, we may apply a cementitious waterproofing slurry on the inside or outside, depending on access.
5. Application under the right conditions. New Orleans humidity and sudden showers make planning critical. We monitor the forecast, surface temperature, and dew point to avoid trapping moisture under the coating. We apply uniform coverage by spray, brush, or roller according to manufacturer requirements and field-test absorbency to confirm proper saturation with penetrating sealers.
6. Final inspection and documentation. Once cured, we check for missed spots, drips, and proper beading of water. We walk you around the property, explain what was done, and give written product information and maintenance guidance.
Waterproofing Options For Different Masonry Surfaces
Not every part of your property should receive the same waterproofing treatment. Superior Masonry New Orleans separates the property into zones and uses what works best in each area.
Exterior brick walls: For most residential and light commercial brick walls, a breathable penetrating water repellent is ideal. It soaks into the brick and mortar, blocks liquid water, but allows vapor to escape. This is important in New Orleans where interior air is cooled and dehumidified. If the wall could not breathe, you would risk blistering paint or interior moisture issues.
Stucco and CMU block: Many stucco surfaces in New Orleans hide concrete masonry units (CMU). Hairline stucco cracks are common and let wind-driven rain reach the block. In these cases, we may use an elastomeric wall coating that can stretch across hairline cracks, combined with crack repairs before coating. On exposed CMU block, we often combine a block filler primer with a waterproof coating to seal the many pores in the block.
Foundation and below-grade walls: For foundation walls near the water table or in low-lying neighborhoods, penetrating products alone are usually not enough. When access allows, we excavate to apply exterior membranes, drainage mats, or cementitious coatings, then improve grading and drainage. If exterior access is limited, we may treat the inside with negative-side waterproofing coatings and interior drainage, and we will be clear with you about the limitations.
Masonry features: Chimneys, garden walls, porch columns, and steps often fail first because they are fully exposed. We typically use a combination of tuckpointing, cap flashing or waterproof caps, and a water repellent or coating. For historic decorative elements, we keep the appearance as close to original as possible and test products on a small discreet area first.
Common Masonry Water Problems We See In New Orleans
Knowing what problems are typical in this region helps you recognize issues early. Superior Masonry New Orleans repeatedly sees a few patterns on masonry structures throughout the city.
Efflorescence and salt damage: That white, powdery residue on your brick or block is minerals left behind as water evaporates. On the lake side and in coastal-influenced neighborhoods, salt content can accelerate this. We do not just wash it off. We track the moisture source, allow the wall to dry, then use breathable water repellents so salts do not build up and push the face of the brick off.
Spalling brick and cracked faces: When bricks or stones repeatedly get soaked and then heat up in the sun, the face can pop or flake off. You see rough, broken surfaces and loose pieces. Waterproofing at this point must be combined with selective brick replacement and proper mortar. We avoid trap-moisture products that would make spalling worse.
Interior damp spots and odors: In New Orleans, masonry walls often have little or no cavity space. When water seeps through, it can show up as peeling paint, swollen baseboards, or musty smells. We inspect the exterior masonry, check for clogged gutters and poor grading, then design a system that dries the wall and blocks further moisture. Sometimes that means addressing roof and gutter issues before we apply any masonry waterproofing.
Hairline cracking from settling: With soft soils and older foundations, small structural movement is common. Hairline cracks in brick and mortar can admit water during wind-driven rain. Our approach is to repair the cracks, correct any obvious drainage issues, and then use flexible or penetrating waterproofing so future seasonal movement is less likely to reopen the wall to leaks.
What Affects Cost And Timeline For Masonry Waterproofing
Homeowners and property managers in New Orleans usually want a straight answer about price. Superior Masonry New Orleans explains all cost drivers upfront so you can budget realistically and compare quotes on equal footing.
Access and height: A one-story brick home with open yard access costs less per square foot to waterproof than a three-story building in a tight historic district. If we need scaffolding, lifts, or special fall protection setups, that adds labor and equipment costs.
Condition of the masonry: Waterproofing itself is only part of the job. The more repairs needed, the higher the total cost. Heavy repointing, brick replacement, or structural crack stitching are separate line items. We will always separate repair costs from coating or sealer costs on your estimate.
Type of system: Penetrating water repellents are usually less expensive than multi-coat elastomeric systems or full below-grade waterproofing assemblies. If your property needs specialty products (for example, vapor-permeable systems approved for historic restoration work), that can change the material cost but often pays off in longevity and compliance.
Project size and staging: Larger projects sometimes get a better per-square-foot rate because setup is spread over more area. However, if the work must be staged in small sections due to tenant schedules or business operations, that can lengthen the timeline.
Weather delays: In New Orleans, pop-up storms and heavy humidity are a real factor. Some coatings require a dry surface and several hours of cure time with no rain. We schedule work around the forecast and will explain if weather may extend the project by a day or two so you are not surprised.
Local Considerations, Permits, And How To Hire The Right Masonry Waterproofing Contractor
Masonry waterproofing in New Orleans touches on more than just products. There are local rules, neighborhood expectations, and historic guidelines that must be respected.
Permits and approvals: Simple clear sealing of an existing wall usually does not require a building permit. However, if we are repairing masonry on a building in a historic district, changing exterior appearance, or doing structural work, the Historic District Landmarks Commission (HDLC) or local review board may need to approve materials and methods. Superior Masonry New Orleans has worked under these constraints and can help you understand when approvals are needed.
HOA and condo rules: Many condo associations in the Warehouse District or along the river have rules about exterior finishes and colors. Before we start coating common-area masonry, we review association documents or coordinate with your board so the work complies and the warranty is clear about who maintains what.
What to ask before you hire: Ask any contractor exactly what type of product they are using (brand and chemistry), whether it is breathable, and how long it is expected to last in this climate. Ask to see previous New Orleans jobs that are at least three years old, not just fresh work. A reliable contractor will show you surfaces that have already been through several storm seasons.
Warranty and maintenance: We explain what is covered by the product manufacturer and what is backed by Superior Masonry New Orleans. Typically, penetrating sealers last 5 to 10 years depending on exposure, while some coatings can last longer if maintained. We will also advise you on simple ongoing maintenance like keeping gutters clear, maintaining caulk at openings, and watching for new cracks so the waterproofing system can perform for its full life.
