Waterproofing

Waterproofing helps prevent water intrusion that could weaken structures or lead to their disintegration.

Why Waterproof?

The cost of repairing a foundation damaged by water intrusion is much higher than the cost of waterproofing your basement, crawlspaces and other parts of your home that are particularly susceptible to water damage.

By waterproofing now, you can prevent foundation damage and save yourself a lot of grief and expense later on.

basement water proofing

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  • wall before exterior waterproofing work waterproofing company prepares for waterproofing work
    View of the exterior wall before waterproofing work commencesWaterproofing preparations begin
  • waterproofing service crew digs along exterior wall concrete foundation waterproofing excavation
    Sinai Construction Engineering digs along the exterior wallDigging is started for concrete foundation waterproofing
  • excavation along the wall deepened - los angeles basement waterproofing waterproofers hand-digging along foundation wall
    Digging deeper along the exterior wallSinai Construction Engineering crew member digs along the foundation wall
  • concrete foundation exposed for residential waterproofing exterior waterproofing compound
    Foundation wall now exposed and ready for waterproofingWaterproofing compound application
  • block foundation waterproofing compound concrete foundation waterproofing
    Waterproofing compound application completedWaterproofing compound on the exterior wall

Why Seek Professional Help?

There are various types of waterproofing products, but not all of them can protect your foundation from water damage. Different situations also call for different solutions. There are products you must apply to the exterior wall; there are others that you can use on the interior wall. If you apply the wrong waterproofing product or use an inappropriate waterproofing method, you'll waste your money.

The expertise of a foundation contractor like Sinai Construction Engineering will help you save money. Our experience in waterproofing means that your can depend on us to recommend and use the waterproofing solution that best fits your situation so no money and time are wasted.

Typical Waterproofing Solutions

Waterproofing and protective coating solutions come in a variety of forms. They can be applied to above-grade or below-grade decks, exterior walls, slabs, foundations, retaining walls, or basement walls.

Waterproofing materials are often rubber-based and have the ability to bridge cracks. Foundation waterproofing products should be distinguished from some damp proofing products which are tar-based and will not provide waterproofing protection.

There are also various types of waterproofing methods, but the two most common methods are waterproofing membrane installation and crystallization.

Exterior Waterproofing

Typically, a water intrusion problem is addressed by excavating along the exterior side of the wall (e.g. the foundation wall or the retaining wall) and applying waterproofing compounds or a waterproofing membrane to this exterior wall.

waterproofing compound
Water proofing compound
waterproofing membrane drainage
Miradri water proofing membrane


Waterproofing membranes should be accompanied by good drainage to be most effective. This involves excavating a trench within which a perforated drain pipe surrounded by gravel wrapped in fabric could be placed to drain excess water.

Concrete Waterproofing by Crystallization

If it is not possible to apply waterproofing to the exterior side, there are special waterproofing products that may be applied to the interior side of the foundation or retaining wall. This method requires several months of curing before the special waterproofing products can completely crystallize throughout the entire wall and make it proof against water intrusion.

Whichever waterproofing solution is used, it is important that it be executed correctly and the waterproofing product be applied properly. Thus, it is imperative that you choose an experienced foundation contractor that can correctly implement the appropriate waterproofing method.


  • Winner, 2015 Angie's List Super Service Award

    Winner, Angie's List
    Super Service Award 2015

  • Winner, 2014 Angie's List Super Service Award

    Winner, Angie's List
    Super Service Award 2014

  • Winner, 2013 Angie's List Super Service Award

    Winner, Angie's List
    Super Service Award 2013

  • Winner, 2012 Angie's List Super Service Award

    Winner, Angie's List
    Super Service Award 2012

  • Winner, 2011 Angie's List Super Service Award

    Winner, Angie's List
    Super Service Award 2011

  • Member, International Concrete Repair Institute

    Member, Int'l Concrete Repair Institute

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    Winner, Customer Satisfaction Award
    2014, 2012, 2011

"We have saved tons of money because Sinai Construction inspected a property we were about to buy. They found that the property had serious structural and foundation issues. Now I won't even consider buying a house without Sinai Construction checking it out first."

Barbara C., West Hollywood

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