Best Waterproofing Products for Englewood Chimneys (And How to Apply Them)

By James Carter Chimney Inc Team · Updated September 2, 2026

For Englewood homeowners, the best chimney waterproofing products are siloxane-based sealants like ChimneySaver WaterRepel or SaverSystems’ Siloxane 20. These penetrate brick and mortar to repel water without trapping moisture inside. Proper application requires a clean, dry surface and careful brush or spray application, followed by a 24-hour cure. Trust a licensed sweep to ensure it’s done right the first time.

Why Englewood Chimneys Need Waterproofing (And What Happens If You Skip It)

A chimney inspection is a visual and tactile assessment of your chimney’s structure, flue, and components to identify damage, blockages, or safety hazards. In Englewood, where seasonal temperature swings from summer highs in the 90s to winter lows below freezing are common, unprotected chimneys face relentless moisture stress. Englewood, CO reports an average of 18 inches of precipitation annually, with snowpack lingering into April. Without a waterproof barrier, water seeps into porous masonry, freezes, and expands, cracking bricks and eroding mortar joints. Over time, this leads to costly structural repairs, interior water stains, and even chimney collapse. The Chimney Safety Institute of America (CSIA) warns that water is the leading cause of chimney deterioration, accounting for over 90% of damage observed in inspections. If your chimney shows white efflorescence or spalling bricks near the roofline, it’s already under attack.

Top Waterproofing Products for Englewood Chimneys (Tested by Local Sweeps)

After years of servicing chimneys from the foothills of Englewood to the plains near Bow Mar, we’ve found three products consistently outperform others in Colorado’s climate. First, **ChimneySaver WaterRepel** is a siloxane-based sealer that bonds chemically to masonry, repelling water while allowing vapor to escape. It’s ideal for historic brick in Englewood’s older neighborhoods like the Belleview area. Second, **SaverSystems’ Siloxane 20** offers a thicker, more durable finish that resists UV degradation—a must for chimneys exposed to high-altitude sun. For homeowners near Cucharas Park, where wind-driven rain is common, **ChimneySaver’s VaporGard** adds a hydrophobic layer that beads water aggressively. Avoid cheap acrylic sealers; they trap moisture and accelerate spalling. Always choose a product labeled for chimneys and certified by the manufacturer for masonry use. Ask our team for a free moisture test to confirm your chimney’s needs.

Step-by-Step: How to Waterproof Your Englewood Chimney Like a Pro

A chimney crown sealing is the protective cap at the top of your chimney that shields the flue and masonry from rain and debris. Start by scheduling a professional chimney sweep to remove soot, creosote, and debris from the flue and crown. In Englewood, we recommend this step before waterproofing to ensure the sealer adheres to a clean surface. Next, repair any cracks in the crown or masonry with a high-temperature mortar mix. Once dry, mask off the roof and surrounding areas to protect landscaping and siding from overspray. Apply the waterproofing sealer with a stiff-bristle brush or low-pressure sprayer, working in 3x3-foot sections to avoid puddling. Allow 24 hours of dry, above-freezing weather for curing. Avoid applying sealer in direct sun or wind, as this can cause uneven drying. For chimneys taller than 10 feet, consider hiring a certified sweep—safety is paramount on Englewood’s windy days. Our craftsmen include a one-year workmanship warranty on all waterproofing jobs.

When to Waterproof Your Englewood Chimney (Timing Matters in Colorado)

The best time to waterproof your Englewood chimney is in late spring or early summer, after the last freeze but before monsoon season. In Englewood, late May to mid-June offers stable temperatures between 60–75°F, ideal for sealer application and curing. Avoid fall waterproofing; residual moisture in masonry can freeze overnight, trapping moisture under the sealer and causing blistering. If you notice leaks after a spring storm, address them immediately—delaying repairs in Englewood’s clay-rich soil can lead to foundation issues near the chimney base. Homeowners near the Platte River corridor should prioritize waterproofing before July’s monsoon rains. For older homes in Englewood’s historic districts, consider a pre-winter inspection to catch summer damage before freeze-thaw cycles begin.

DIY vs. Professional Waterproofing: What Englewood Homeowners Should Know

While DIY waterproofing kits are available, the risks outweigh the savings for most Englewood homeowners. A poorly applied sealer can trap moisture, leading to internal rot and hidden mold growth in walls adjacent to the chimney. Professional sweeps use commercial-grade sealers and follow CSIA-approved protocols, including moisture testing before and after application. In Englewood, where chimneys often share walls with living spaces, precision matters. Our team uses infrared moisture meters to detect hidden dampness and ensures the sealer penetrates deeply into the masonry. For a free estimate, call us before purchasing any product—we’ll match or beat retail prices. Licensed sweeps also carry liability insurance, protecting you if a ladder slips or a sealant drips onto your deck.

How to Spot Water Damage on Your Englewood Chimney (And What to Do Next)

A chimney inspection is a visual and tactile assessment of your chimney’s structure, flue, and components to identify damage, blockages, or safety hazards. If you see white, chalky stains (efflorescence) on bricks, feel crumbly mortar when you run your fingers along joints, or notice water pooling in the firebox after rain, your chimney is already compromised. In Englewood, chimneys near the Highline Canal Trail often show these signs due to prolonged exposure to moisture. Act quickly: water damage spreads from the crown downward, weakening the entire structure. First, schedule a chimney sweep to clear debris and inspect the flue. Then, apply a waterproofing sealer if the masonry is sound. If spalling is severe, the chimney may need tuckpointing or crown repair. Don’t wait for winter—Englewood’s freeze-thaw cycles accelerate damage.

Cost of Chimney Waterproofing in Englewood (And How to Save)

The cost to waterproof a chimney in Englewood typically ranges from $300 to $800, depending on height, condition, and product choice. A standard 10-foot chimney with minor cracks costs around $450, while a taller, historic brick stack may exceed $1,000. Factors like scaffold rental, crown repairs, and moisture testing add to the total. To save, bundle waterproofing with your annual chimney sweep—many local sweeps offer discounts for combined services. Avoid the temptation to cut corners with discount sealers; a failed application can double your repair costs. Ask about our seasonal promotions for Englewood homeowners—we include a free moisture test with every job. Always verify the sweep’s license and insurance; uninsured work can void homeowners insurance claims if the chimney leaks later.

Frequently Asked Questions