Step 1. Leaky, Damp and Mouldy Unprotected Foundation
If you’re living in an older home, chances are it has a stone foundation. Even though stones are extremely durable, the mortar used to set them in place is more susceptible to water leakage, causing the dampness in your basement.
Step 2. Excavate, Clean and Prepare Foundation Wall
With every new basement waterproofing project, the first thing the contractor does is use excavators and shovels to dig up the soil around your house, until the foundation wall and the damaged weeping tile are completely unearthed. The wall is cleaned of any soil and the crumbling mortar is removed.
Step 3. Repair and Refill Damaged Areas With Hydraulic Cement
Hydraulic cement is then used to fill up any gaps in the wall. It takes about three minutes to set and, as it hardens, it expands, tightening up the cracks around the pipes.
Step 4. Apply 2 Layers of Parge Coating
For the foundation wall to have a smoother surface after the filling, a parge coat of mortar is applied over its entirety. After it’s completely dried up, a second layer is added to get the right thickness.
Step 5. Apply Rolled Foundation Sealer
After that, a foundation sealer is applied over the parge coat by workers with the help of nap rollers. The foundation sealer mostly used is an elastomeric sealer and acts as an efficient barrier against water penetration.
Step 6. Install Delta-MS Air Gap/Drainage Membrane System
Now, the Delta-MS drainage membrane is precisely cut and ready to be installed as the third and final protection layer. The dimples in the membrane channels the water trapped inside it into the drain tile without ever touching the foundation wall.
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Step 7. Install Filtered Weeping Tile & Gravel Impactment
new filtered weeping tile will be installed. It will keep the water level lower than the basement floor and help avoid hydrostatic pressure against the foundation walls. The ditch will then be partially back filled with gravel, which acts as an additional water filter.
Step 8. Backfill, Compact & Restore Surface Materials
The job isn’t over until the gutter is properly filled and sloped away from the house, and everything is restored to the way it used to be. When executed by a proper contractor, basement waterproofing does no damage to your home. On the contrary, it helps protect it by keeping the foundation walls and your basement dry.