One of the biggest threats to stone masonry is humidity, especially in a city like New Orleans, where the damp air never seems to stop. Whether it’s your home’s walls, walkways, or backyard features, knowing how to properly seal stone masonry can save you from expensive repairs and keep your surfaces looking sharp.
Keep your stonework strong through every season—reach out to the best masonry contractor in New Orleans now.
Phone: (504) 285-6050
Email: contact@neworleansmasonryla.com
Step-by-Step Guide to Sealing Stone Masonry
1. Clean the Surface Thoroughly
Before applying any sealer, the surface must be cleaned completely. Use a mild detergent or masonry cleaner and a stiff brush. Rinse well with water and let it dry completely, which can take 24 to 48 hours.
2. Choose the Right Sealer
Every sealer is different. For stonework in humid areas, a breathable, penetrating sealer is best. These allow moisture vapor to escape while protecting against new moisture from getting in. Do not use glossy sealers, as they can trap water inside.
3. Test a Small Area First
Always test the sealer first on a hidden area. This helps ensure it won’t discolor the stone or react poorly with previous treatments.
4. Apply the Sealer Evenly
Now, use a sprayer, roller, or brush to apply the sealer. Work in small sections and do not oversaturate. Make sure to follow the manufacturer’s guidelines for drying time and second coats.
5. Let It Cure
After application, avoid walking on or touching the sealed surface for the full curing time (usually 24-72 hours). This allows the product to bond and penetrate completely.
How Often Should Stone Be Sealed?
The most stonework should be resealed every two to five years, depending on the type of sealer used, weather exposure, and wear. In high-humidity regions like New Orleans, it’s a good idea to check your surfaces once a year.
Common Mistakes to Avoid
- Skipping the cleaning step
- Applying sealer to damp or dirty stones
- Using the wrong type of sealer
- Not checking weather conditions (avoid sealing during rain or extreme humidity)
- Over-applying the product
Need Expert Sealing Services in New Orleans?
Protecting your stonework from humidity requires the right techniques and materials. For flawless, long-lasting results, trust New Orleans Masonry Contractors to handle your sealing needs. From assessment to application, they take care of everything to make sure that your surfaces are long-lasting, clean, and protected.
📞 Call: (504) 285-6050
📧 Email: contact@neworleansmasonryla.com
How do I know if my stone needs to be resealed?
If water soaks into the surface instead of beading up, it’s time to reseal.
Can I seal stone masonry myself?
Yes, but hiring a professional often delivers better and longer-lasting results.
What happens if I don’t seal my stone?
Unsealed stones can absorb moisture, which can lead to cracks, stains, and structural damage.
Can sealing help with mold or mildew?
Yes, it prevents water absorption, which helps reduce mold and mildew growth.
Does sealing prevent efflorescence?
Sealing helps, but efflorescence is caused by salt migration. Proper drainage and mortar quality are also key.
