How much traditional basement waterproofing costs
The cost of excavating and waterproofing a foundation costs $1000’s and is a very expensive proposition; as a result, many homeowners avoid dealing with the leaking cracks in their basements because they are afraid that it will cost them a fortune to get the cracks repaired.
Cost in Canada is ~$1000 to dig out around the foundation and another ~$500 to get them to install a new liner.
Here is another option…
Almost all homes built since the late 1970’s have poured concrete foundations, and there are very few foundations that don’t have cracks in them. Most foundation cracks are hairline cracks which occur as the concrete is curing due to the evaporation of the water in the concrete; this phenomenon is referred to as plastic shrinkage.
The introduction of injection crack repair technologies
Leaks in underground structures such as subway tunnels, sewers and mines cannot be repaired by excavating and waterproofing; this challenge led to the development of injection technology to fill voids with specialized resins for water stopping. The use of this technology has led to a significant reduction in basement leak repair cost.
Both epoxy and polyurethane crack injection have been used in residential basement waterproofing applications since approximately 1980; these crack repair methods are performed from inside the basement. Since excavation is not required, the cost of fixing a basement leak from inside by repairing cracks using epoxy and polyurethane injection methods is low.
|Polyurethane crack injection nearing completion|
How much does crack injection cost?
Homeowners typically shop around for the best price to get their foundation cracks injected. As of September 2016, in and around Toronto, the crack repair cost for injection is in the range of $350 – $525 + tax per crack.
Why is There Such a Wide Range in the Price For Crack Injections?
Cracked foundation repair is both a science and an art; in fact, many companies don’t offer injection services at all because of the difficulty involved in performing the repairs reliably.
In general, a part-time handyman will offer polyurethane injections for $350 per crack because injection is not usually their primary occupation and they have no overhead – or insurance and expertise for that matter. Professional waterproofing contractors typically charge $395 and up for this type of basement wall crack repair.
Situations when the cost of a crack injection can be higher
The average injection repair cost range is $350- $525 and applies to at least 95% of foundation cracks. This is the cost to inject cracks up to 8 feet in length, which is the height of most basement walls. If the crack is diagonal, and therefore longer, you may pay an extra $100 or $200 depending on the overall length and other factors such as ease of access.
Crack width is another factor that is taken into consideration when pricing a crack injections. Crack widths greater than 1/8 inch (or 3mm), usually caused by foundation settlement, may require crack stabilization using reinforcing staples. Crack stabilization is required for <1% of foundation cracks and typically adds $100 – $200 to the basic injection price.