Chimney Waterproofing in Hamilton, NJ
Hamilton Chimney Repair waterproofs chimneys in Hamilton and throughout Mercer County, but only after the masonry is sound. Sealer is the last step in a repair, never a substitute for one.
Brick has to breathe. The right product repels liquid water while letting vapour escape, so the wall dries outward between storms. The wrong product forms a film, traps moisture behind it, and turns a weathering problem into a spalling one.
When sealing helps and when it hurts
Sound joints, absorbent brick: seal it
A repointed stack in a wind-driven-rain exposure benefits immediately. It slows absorption, which slows the freeze-thaw cycle that breaks brick faces.
Open joints or a cracked crown: repair first
Sealer bridges nothing. Water entering a quarter-inch gap does not care what the surrounding brick is treated with, and coating over it hides the evidence.
Already coated in a film product: strip first
If a previous contractor rolled on an acrylic or a masonry paint, that has to come off or the new treatment sits on plastic. We say so instead of spraying over it.
How we apply sealer in Hamilton
- Confirm the masonry is repaired, pointed, and dry, usually days after the last wet work.
- Clean the faces and mask the roof, gutters, and any adjacent finishes.
- Flood-coat with a siloxane or silane water repellent, wet-on-wet, to refusal.
- Treat the crown and shoulder as well as the four faces, since those take the standing water.
- Check absorption after cure and note the product and date for the file.
Siloxane, not film
A breathable siloxane or silane-siloxane water repellent, applied at full strength rather than thinned to cover more square footage. It is invisible when cured: no sheen, no colour change. What we will not put on a chimney is an acrylic sealer, a masonry paint, or anything marketed as a coating. Those are the products behind most of the spalled brick we are called to replace.
What waterproofing costs in Hamilton
Sealer is priced by the square footage of masonry and access, and it is usually quoted alongside whatever repair precedes it. If the chimney needs pointing or a crown, we quote those first and show the sealer as a separate line. It is your call whether to do it, and it is not a repair we will bill as one.
Waterproofing by town
Hamilton, Trenton, Princeton, Ewing, Lawrence Township, Robbinsville, Bordentown, Hightstown, East Windsor, Allentown, Pennington, Hopewell, Yardley, Levittown.