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Basement Waterproofing Contractors

Interhome Waterproofing are basement waterproofing contractors in Richmond Hill, serving across the GTA. We offer a 25 year guarantee, we carry liability insurance and we are fully licensed and bonded.

When you discover water pooling on your basement floor, running down your walls or even coming up through the soil in your crawlspace then the time has come to invest in a basement waterproofing system.

Basement waterproofing can be done to the exterior or the interior walls of your property. Waterproofing Richmond Hill houses is common for us. The reason being various locations of Richmond Hill are located within low laying coastal plains, so these areas are susceptible to flooding from rivers and canals. An interior or exterior basement waterproofing system can protect your basement in cases of flood or heavy snow melt runoff making it a good investment to avoid future damage costs. Waterproofing your basement will also increase your property value.

basement waterproofing richmond hill

Why Waterproof Your Basement

Both new and old homes can be waterproofed. Majority of new constructions do not have waterproofing of the walls and foundation. At new constructions there is a damp-proof cloth layer which offers no protection to water penetrating and damaging your foundation. A waterproof foundation will last for over 25 years, and we offer that guarantee.

Old homes do not have foundation waterproofing and most them have a crawlspace and not a raised basement. Water that pools under the crawlspace is not easily detected and it can result in mold and the deterioration of your foundation and foundation footings. If cracks have appeared at the exterior of your walls that means your foundation has been compromised. Part of the basement waterproofing installation is to repair foundation cracks and block separations.

Exterior Basement Waterproofing

Exterior basement waterproofing is done when there is enough space around the perimeter of your house so we can excavate and expose your foundation walls. A thorough cleaning of the foundation is performed to detect cracks and holes. We fill the cracks with a specialized hydraulic cement that expands as it dries to seal the crevices. The next step is the installation of a rubber bithuthene membrane which bonds to your foundation walls and provides complete waterproofing. On top a plastic drainage mat is installed that guides water down to the weeping tile so it can be drained away from the structure. Finally, a brand new weeping tile is installed with a layer of gravel and the soil is backfilled to the dugout.

Interior Basement Waterproofing

Interior basement waterproofing is a costlier solution and it is usually employed if your property does not have enough space around the parameter of the house to be dug out. That is when we employ an interior waterproofing technique which includes digging around the interior walls of your basement, installing a weeping tile drainage system and adding gravel for proper drainage. Water coming up from the soil or down the walls accumulates in the weeping tile perforated pipe and it is drained into the sump pump for extraction.

There are several waterproofing companies in Richmond Hill but we truly believe we are above grade. We are in operation since 2004 we have extensive experience and expertise of complex basement waterproofing projects. The quality and type of soil your foundation is sitting on, the condition of your foundation, any structural compromise your property currently has, these are all factors we take into consideration.

We are your trusted basement waterproofing Richmond Hill contractors! As part of our waterproofing services we provide weeping tile drainage systems installations, sump pump installations and have the skilled trademen and equipment to tackle both residential and commercial waterproofing projects. We offer a free consultation and basement assessment and our goal is to educate you on your options and current needs of your property.

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Book your free on-site inspection and consultation with one of our basement waterproofing experts.


Laura Matheson

Home Owner, Markham

"I just wanted to thank you again for the excellent work your guys did and your very high level of service. You went above and beyond in a number of areas and that is unfortunately pretty rare in the construction industry today. Thanks again.

John O’Connor

Home Owner, Toronto

“Interhome Waterproofing is at the top of their field. We had a wet basement issue and had a few contractors come out for an assessment. Very quickly we were impressed by Ali, one of the owners of IW. He was thorough, patient to explain to us our options, even pointed out that our sump pump was not working properly. We are very pleased with their work. They were professional, courteous and the project manage was always on top of things. Highly recommended.”

Leo Boico

Nabeel Construction, Toronto

“As general contractors we rely on our working relationship with our sub-contractors to produce quality work and uphold our good name. We have been working with Interhome Waterproofing since 2008. They have tackled several complex projects and have always delivered on time and above expectations. We value having them as partners and look forward working with them on our next project.”

Gus Leonidis

Home Owner, Toronto

"Interhome Waterproofing came highly recommended by our building engineer and we are so glad we took his recommendation. We decided it was time to add a full height basement to our old Toronto house. The underpinning process scared us, but Ali put our fears to rest by thoroughly explaining the safeguards and precautions that their process included. The project went without a hitch and we are very happy with the result and their service."