The cost of waterproofing epoxy and PU crack injection repairs for roof and basement in Singapore

The days of excavating around a house and waterproofing the foundation to repair cracks are behind us. In this post we provide the crack injection repair & waterproofing epoxy cost for poured concrete foundation walls and discuss related pricing variables.

How much does an epoxy grouting or crack injection cost?

As of Feb 2021, in and around the Singapore, the cost for and injection crack repair for a basement wall is in the range of $400-800 + GST per metre square of crack

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Why is there such a broad range of prices for crack injections?

Injecting foundation cracks 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 $400 per roof or basement crack because they don’t provide a warranty and PU crack injection is not their primary occupation. Also, they likely don’t have the insurance or expertise that comes with being in the foundation repair industry. Professional contractors typically charge $495 and up for this type of basement wall crack repair.

The price range of $400- $800 applies to at least 95% of roof or basement cracks. This is what it costs to inject cracks up to 8 feet in length; the height of most foundation 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 influences the price of crack injections. Crack widths greater than 1/8 inch (or 3mm), usually the result of foundation settlement, usually requires crack stabilization using reinforcing staples. Crack stabilization is required for <1% of foundation cracks and typically adds $100 – $200 to the price of a crack injection. 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; a phenomenon called plastic shrinkage.

How injection repair technologies have reduced the cost of foundation crack repair?

Leaks in underground structures such as subway tunnels, sewers, and mines cannot be repaired by the traditional method of excavating and waterproofing; this challenge necessarily led to the development of injection technology to fill voids in concrete with specialized resins for water stopping and repairing cracks. The use of this injection technology in residential applications has led to a dramatic reduction in the cost of roof and basement leak repairs. Both PU and epoxy crack injection have been used in residential waterproofing applications since approximately 1980; these roof and basement foundation crack repair methods are performed from inside the basement. Since excavation is not required, the cost of fixing a roof or basement leak from inside by repairing cracks using epoxy and polyurethane injection methods is relatively low.

How does interior basement waterproofing epoxy work?

The cost of excavating and waterproofing a foundation costs $1000 and is very expensive; as a result, many homeowners avoid dealing with the leaking cracks in their roof and basements because they are afraid that it will cost them a fortune to get the foundation cracks repaired. Read our article on roof and basement waterproofing costs.

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The cost of injecting a foundation crack is the lowest price of any foundation waterproofing repair. Call around for pricing, if you must, but go with your gut when selecting the company to fix your foundation crack. There is a bit of an art to PU injection crack repairs, so you have to hire someone with expertise and a good reputation.

Considered as one of the top options for building owners, Le Fong Building Services offers a wide range of services that can make your building a much safer place for everyone. With only 10 years of experience, we have managed to become the first place top business clients would go to every time their building needs repair. Aside from waterproofing epoxy, we can also work on grouting & injection, pipelines, roof, basement, and electrical lines. Our service specializes in commercial services with a team of professional technicians and specialists, together with free consultation and estimation and using quality materials for repairing and waterproofing epoxy.