Home › Masonry Waterproofing and Coatings
We provide masonry waterproofing in Boise, ID to protect brick, block, and stone from water intrusion and damage. Services include clear sealers, breathable coatings, crack repair, and parapet waterproofing. We evaluate your building envelope and recommend solutions that extend the life of your masonry.
Superior Masonry Boise provides professional masonry waterproofing throughout Boise, ID, and the surrounding area. Our licensed, insured crew delivers safe, clean, on-time work with a free estimate before anything begins. Call (208) 567-0948 or request your free quote.
Practical Masonry Waterproofing for Boise Homes and Businesses
Masonry in Boise takes a beating from freeze-thaw cycles, irrigation overspray, and the occasional wind-driven rain. Masonry waterproofing is not about making your brick or block wall shiny, it is about keeping water out of the pores so it cannot crack, stain, or push your mortar apart. Superior Masonry Boise focuses on solutions that fit our local climate and soil conditions, not one-size-fits-all products.
When we talk about masonry waterproofing, we are mainly dealing with three things: limiting liquid water absorption, allowing water vapor to escape, and protecting the surface from future damage. That usually means using breathable sealers or coatings, fixing cracks and joints, and addressing drainage that keeps masonry sitting wet for too long. We work on brick, block, stone, concrete, stucco, and CMU walls around foundations, chimneys, retaining walls, and exterior veneers.
A lot of problems we see in Boise are caused by trapped moisture. If the product used does not breathe, moisture tries to get out through the weakest point which can pop faces off brick or cause flaking concrete. Superior Masonry Boise uses products that have been tested on similar materials here in the Treasure Valley, so they hold up in our hot, dry summers and cold nights without sealing moisture inside.
Step-by-step: How Superior Masonry Boise Waterproofs Your Masonry
Our process starts with an on-site inspection. We look for white powdery staining (efflorescence), hairline cracking, mortar joint erosion, dark damp areas, peeling paint or coating, and any areas where sprinklers are soaking the wall. We also check for movement cracks that might point to structural issues that need to be addressed before waterproofing.
Surface preparation is the most important step. We start by cleaning the masonry with the lightest method that will work for the surface. On many Boise homes, a low-pressure wash and a masonry-safe cleaner will remove dirt and efflorescence. On older brick or soft stone, we avoid harsh pressure or acidic cleaners that can burn the surface. Any previous failing sealer, paint, or elastomeric coating is either stripped or mechanically removed where it is loose so the new waterproofing can bond to the actual masonry.
Next, we repair defects. We rake out crumbling mortar joints and repoint them with a compatible mortar, not an overly hard mix that will cause future cracking. Cracks are opened to a proper profile, cleaned, and filled with flexible sealants or patching materials suited to exterior masonry. Around windows, doors, and penetrations, we check flashing and caulking since many leaks start there, not in the field of the wall.
Once the surface is sound and dry, we apply the chosen waterproofing system. For penetrating sealers, we use low-pressure sprayers and careful back-rolling to ensure full coverage and avoid lap marks. On vertical walls we start at the bottom and work up, which limits runs and makes sure the surface absorbs consistently. For film-forming elastomeric coatings, we prime if needed, then spray and back-roll or apply by roller in multiple coats to reach the manufacturer’s specified thickness. We keep an eye on temperature and wind so the coating cures correctly and does not skin over too fast.
After application, we do a visual inspection and in some cases a light water spray test on problem areas to verify beading and runoff. We walk you through what was done, where any hidden damage was found and fixed, and how to maintain the waterproofing so it lasts as long as possible.
Material Choices: Sealers, Elastomeric Coatings, and Breathable Systems
Different masonry surfaces in Boise need different waterproofing products. Superior Masonry Boise typically works with three main categories: penetrating sealers, breathable clear or tinted coatings, and high-build elastomeric systems.
Penetrating sealers are usually silane, siloxane, or a blend. They soak into the masonry and chemically bond inside the pores. Water beads up and sheds off, but water vapor can still pass through, which is ideal for most brick, block, and natural stone. These are good when you want to keep the natural look of the masonry. They work especially well on chimney exteriors, brick veneers, and porous CMU walls.
Breathable clear or lightly tinted coatings sit more on the surface but are formulated to remain vapor permeable. They are often used when owners want a slight sheen or some color adjustment while still allowing the wall to dry out. This can be a good fit on older stucco or masonry where hairline cracks are present but movement is minor.
Elastomeric coatings create a continuous flexible film across the wall that bridges small cracks and sheds water very effectively. We use these on block or stucco walls that have multiple fine cracks or that are exposed to a lot of wind-driven rain, such as commercial buildings or retaining walls. The key is choosing an elastomeric that has enough breathability for our freeze-thaw climate and applying it at the correct thickness. Too thin and it will crack, too thick and you risk trapping moisture.
Product selection is not just about the wall type. We also look at sun exposure, sprinkler patterns, whether the wall is above or below grade, and whether interior spaces behind the wall have humidity issues like bathrooms or mechanical rooms. Superior Masonry Boise explains the pros and cons of each material, including typical life span before reapplication, appearance changes, and maintenance requirements, so you can choose a system that fits both your budget and how you use the space.
Costs, Timing, and What Boise Property Owners Should Plan For
The cost of masonry waterproofing in Boise depends on several very specific factors: total square footage, height and access (single-story vs multi-story, flat vs sloped grade), level of cleaning and repair needed, and the type of product system you select. A simple penetrating sealer on a sound, easily accessed wall is on the lower end of the cost range. A full elastomeric coating system that involves extensive crack repair, priming, and lift or scaffold access will be higher.
Surface condition is usually the biggest variable. If your brick or block is heavily stained with efflorescence, if mortar joints are failing, or if an old coating must be removed, we will have to build in more labor and materials. On the other hand, newer masonry with minor issues can be prepped relatively quickly. Superior Masonry Boise provides itemized estimates so you can see the difference between cleaning, repairs, and waterproofing itself, and decide where to invest if you are on a strict budget.
Timing matters in our climate. The best seasons for masonry waterproofing in Boise are late spring through early fall when daytime temperatures are generally between 50 and 90 degrees and the walls can dry out fully overnight. Many products require a dry surface and no rain for at least 24 hours after application. We avoid days with hard frost in the morning or extremely high heat in the afternoon since both can affect curing. If you have a tight schedule, it is smart to contact us a few weeks before you want the work done, especially for larger commercial jobs where lift rental scheduling is involved.
If you are planning other exterior work like painting, landscaping, or new concrete, let us know. For example, it can be better to adjust sprinkler heads or drainage grading before we seal the masonry so that the new system is not constantly getting soaked. We can coordinate with your other contractors so no one is working on the same wall at the same time.
Common Local Problems, Maintenance, and Why Professional Help Matters
Around Boise, Superior Masonry Boise repeatedly sees a few recurring waterproofing issues. Sprinkler overspray is probably the biggest one. When heads are aimed at brick or block, the lower few courses get saturated every day, which leads to dark staining, efflorescence, and in winter, freeze-thaw spalling. We recommend adjusting irrigation as part of any waterproofing plan so you are not undoing the protection you just paid for.
Another common problem is using the wrong type of product. Non-breathable sealers, especially some old acrylics or deck-type sealers, have been applied over masonry in the past. These can peel, yellow, or trap moisture, which then shows up as bubbling or flaking. Part of our job is to identify what is already on your walls. If removal is needed, we explain the options and the realistic limits of how clean the substrate can be brought back before applying a new, more suitable system.
Maintenance is straightforward but important. Most penetrating sealers last several years, depending on exposure. An easy test you can do yourself is to sprinkle water on the wall. If it still beads up and runs off, you are in good shape. If it quickly darkens and soaks in, it may be time to call us for an evaluation. Elastomeric coatings last longer but can be damaged by physical impact or new cracks in the structure. Periodic visual checks for peeling, open joints, or new stains can catch issues early while repairs are simple.
Professional waterproofing is not just about having access to contractor-grade products. It is also about understanding how masonry assemblies work in our specific region. Boise structures see a wide temperature range from summer to winter, so materials expand and contract more than in milder climates. Our crews know how to detail corners, control joints, parapets, and transitions so that the system moves with the building instead of tearing or opening up.
If you are unsure whether masonry waterproofing is right for your property, Superior Masonry Boise can perform a focused inspection and give you a clear summary: what is happening now, what is likely to happen if nothing is done, and what level of protection makes sense. That way you can decide based on real conditions, not just a sales pitch.
