Parging Repair in St. Thomas & London, Ontario
Foundation parging repair and parge coat repair for cracked or crumbling walls, so damaged parging stops letting moisture into your basement.
Every parging repair job includes
- Free on-site assessment of the existing parging and what's causing it to fail
- Removal of loose, cracked, or delaminating old parging before recoating
- Surface cleaned and prepped so the new coat actually bonds
- Cement-based parge coat applied at proper thickness, not a thin cosmetic skim
- Smooth or textured finish to match the rest of your foundation
- Site cleaned up and a final walkthrough before we call it done
Why parging cracks in the first place
Parging is a cosmetic and protective cement coating over the concrete or block foundation, not a structural element, and it takes the brunt of freeze-thaw cycling every winter. Water gets into small cracks, freezes, expands, and pops sections of the coating loose. Once that starts, more water gets behind the remaining coat and the crack spreads.
Some parging companies patch over failing sections instead of removing them first. A parge coat repair applied over loose old material fails again within a season or two, because it was never bonded to solid concrete underneath. A proper concrete parging repair means removing what's failing before recoating, which is more work upfront but is the difference between a cement parging repair that holds and one that needs redoing next winter.
Parging and basement moisture
Cracked or missing parging isn't just a cosmetic issue. It's often the entry point for water finding its way into a basement, especially where the foundation meets grade. If you're dealing with basement moisture and haven't looked at the parging outside, house parging repair is one of the first things worth checking before assuming the problem is inside the foundation itself.
What affects the cost of parging repair
Every quote is different. These are the factors that move the number most.
Linear footage
Parging is priced by the length of wall being coated, not square footage, so how much of your foundation's perimeter needs work matters most.
Condition of the existing parging
A few small cracked sections cost less to fix than parging that's failing across the whole foundation and needs full removal first.
Height of exposed foundation
How much foundation shows above grade affects how much surface area needs to be coated on a given stretch of wall.
Access around the foundation
Landscaping, decks, or AC units close to the wall can slow the work down compared to a clear, open perimeter.
Underlying moisture issues
If water is actively getting behind the foundation wall, that needs addressing before recoating, or the new parging fails the same way the old parging did.
Finish match
Matching an existing textured or coloured finish takes more care than a standard smooth grey coat.
We don't quote parging over the phone, the condition of what's underneath the old coating can't be assessed without standing on site. The estimate visit is free and you get the number in writing.
Foundation parging FAQ
Parging is a thin cement-based coating applied over a concrete or block foundation wall. It's partly cosmetic and partly protective, helping shield the foundation from moisture and weather.
It depends on application quality and exposure, but well-applied parging on a properly prepped wall generally holds up for many years before it needs attention. Freeze-thaw cycling is what eventually breaks it down.
Loose or cracked sections get removed down to solid concrete first, not coated over. Coating over failing parging just fails again shortly after, since the new material was never bonded to anything solid.
It depends mostly on how much linear footage needs work and how far the damage extends. We don't quote parging repair over the phone, the condition underneath the old coating can't be assessed without standing on site. The estimate visit is free and you get the number in writing.
It can be. Cracked or missing parging near grade is a common entry point for water. If you're dealing with basement moisture, it's worth having the exterior parging checked.
Like other cement-based work, parging needs above-freezing temperatures to cure properly, so it generally needs to happen before the weather turns. Book the estimate visit early if you want it done this season.
Contact us and we will schedule a free on-site visit. You get a written estimate with no obligation, usually within a day or two of the visit.
Ready to start your project?
Get a free, no-obligation estimate from FASTZ Home Improvement.