Chimney Waterproofing in Nassau County
ChimSaver is a professional-grade, vapor-permeable chimney waterproofing treatment that penetrates brick and mortar to block water entry from outside while allowing moisture vapor from inside the chimney to escape. This breathability distinction is critical — ordinary paint or sealant traps moisture inside the masonry, where freeze-thaw cycles cause spalling and internal damage. ChimSaver protects without trapping. DME Maintenance applies ChimSaver after chimney pointing and crown repair as the final layer of water protection — it's the difference between a repair that lasts five years and one that lasts twenty-five.
ChimSaver penetrates brick and mortar — not a surface film
Vapor-permeable — chimney breathes, trapped moisture escapes
Blocks wind-driven coastal rain intrusion
Extended protection warranty available
How Chimney Waterproofing Works
Complete any needed repairs first
Waterproofing is only effective on structurally sound masonry. Cracked crowns, failing mortar joints, and missing caps must be repaired before waterproofing is applied.
Clean the chimney exterior
The masonry is cleaned of efflorescence, biological growth, and loose debris. ChimSaver requires clean, dry masonry for proper penetration.
Apply ChimSaver in two coats
ChimSaver is applied in two saturating coats, allowing the first coat to absorb before applying the second. The sealant penetrates the masonry rather than forming a surface film.
Allow cure time
ChimSaver requires 4-6 hours to cure before rain exposure. We schedule accordingly. The breathable formulation allows trapped moisture vapor to escape while blocking liquid water infiltration.
What Customers Say
Conor Burke
Wantagh • February 2026
“They explained why ChimSaver over regular masonry sealer. Made sense.”
★★★★★Mrs. Niamh Nolan
Wantagh • July 2025
“Breathable sealant — brick can still release moisture but rain can't get in.”
★★★★★Michael Pugliese
Merrick • May 2025
“Applied to the full chimney exterior. No more moisture infiltration.”
★★★★★Frequently Asked Questions
What is ChimSaver chimney waterproofing?
ChimSaver is a professional penetrating chimney waterproofing treatment. Unlike paint or silicone sealants, ChimSaver is vapor-permeable — blocks water from outside while allowing moisture vapor from inside to escape. Best applied after chimney pointing or crown repair.
When should chimney waterproofing be applied?
ChimSaver should be applied after any chimney repair — pointing, crown work, or cap installation — on clean, dry masonry. In Nassau County, fall or spring are ideal application windows.
Will waterproofing stop a leaking chimney?
Waterproofing alone does not fix a chimney leaking through structural failures — those must be repaired first with pointing, crown repair, or flashing work. ChimSaver then protects the repaired masonry from future water penetration.
Why ChimSaver and not regular masonry sealer?
Regular silicone-based masonry sealers form a film on the surface that traps moisture vapor inside the masonry. As vapor pressure builds, it causes spalling and accelerated deterioration. ChimSaver is a penetrating sealer that allows moisture vapor to escape while blocking liquid water — specifically designed for chimneys that experience heat-driven vapor pressure.
How long does ChimSaver waterproofing last?
ChimSaver waterproofing typically remains effective for 10+ years under normal Nassau County conditions. South Shore homes in high salt-air environments may benefit from reapplication every 7-8 years. The product is applied in two saturating coats by DME Maintenance for maximum penetration and longevity.
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Nassau County Pricing Guide
| Service | Starting Price |
|---|---|
| Chimney Cleaning & Sweep | $185–$299 |
| Chimney Inspection (Level 1) | $185+ |
| Gas Chimney Cleaning | $185 |
| Oil Chimney Cleaning | $220 |
| Wood Fireplace Chimney Sweep | $275+ |
| Gas Fireplace Cleaning | $195+ |
| Wood Stove Cleaning | $299+ |
| Pellet Stove Cleaning | $299+ |
| Chimney Blockage Removal | Free estimate |
| Chimney Repair | Free estimate |
| Chimney Cap Installation | $285+ |
| Chimney Crown Repair | $435+ |
| Chimney Chase Cover | Free estimate |
| Chimney Pointing | $660+ |
| Chimney Waterproofing (ChimSaver) | Free estimate |
| Prefab Chimney Service | Free estimate |
| Stainless Steel Chimney Liner | $1,750+ |
| Level 2 Inspection (Home Sale) | Free estimate |
| Emergency Chimney Service | Free estimate |
| Chimney Damper (Top-Sealing) | $1,100+ |
| Dryer Vent Cleaning | $165+ |
| Chimney Flashing Repair | Free estimate |
| Carbon Monoxide Safety Inspection | Free estimate |
| Smoke Problem Diagnosis | Free estimate |
| Chimney Odor Diagnosis | Free estimate |
| Chimney Water Leak Repair | Free estimate |
| Fall Chimney Cleaning | $185+ |
| Chimney Service Cost Guide | $165–$1,750+ |
| Power Washing | $195+ |
| Oil-to-Gas Chimney Conversion | $1,750+ |
| Chimney Rebuild | $1,320+ |
| Animals in Chimney | $285+ |
| Real Estate Agent Inspections | Free estimate |
Prices are starting rates. Free on-site estimates for all repair work. Call 516-690-7471.
Chimney Waterproofing Nassau County NY | ChimSaver | Free Estimate — Free On-Site Estimate
Same-week appointments • Written inspection report • Nassau License #H0101570000