Basement waterproofing can lead to many problems due to insufficient or poor waterproofing. Seepage can cause extensive damages if it is not addressed properly. Sometimes you will try to apply a coat or any other product in the basement when the actual problem comes from the outer walls. Let’s see how to waterproof a basement. Weather is waterproofing for africa or waterproofing for south asia countries, the humidity weather waterproofing is important to the buildings.
Dig Around
To protect your basement from water, you will need to dig all the outer perimeter of the basement all the way down to the base of the foundation. Having the right product applied over the walls will be key to having a successful waterproofed basement.
Drainage tiles, gravel or crushed stone drains, perforated pipe, or other approved systems or materials shall be installed at or below the area to be protected and shall discharge by gravity or mechanical means into an approved drainage system.
Check for Cracks
With the excavation completed, clean the wall and check for any cracks or areas causing the water to seep in. If you have detected these issues, apply a plugging and grouting polyurethane foam to the walls by hydraulic high pressure machines to stop the leakage. The plugging and grouting polyurethane foam will expand as it is curing when met with water or moisture and with its chemical properties, it will fill in the cracks and voids reducing the probability of leakage.
Apply Coating
Apply a layer of rubber coating like modified bituminous coating to all exterior walls. The SINOMACO SB2000 modified bituminous coating is easy to apply and can be used over concrete and masonry surfaces. This type of coating will strongly bond to the wall and will close the concrete pores. In case a hairline crack was not fixed in the previous step with plugging and grouting PU foams, it will be covered in this procedure.
Apply a Membrane
Install a waterproofing membrane both bituminous membrane or high polymer membranes. With the modified bituminous coating troweled or sprayed on to seal the foundation wall against water from the outside. An elastomeric membranes are made of modified asphalt and exhibit great waterproofing characteristics.
One of the most important benefits of elastomeric membranes is that they can flex and move to accommodate when new cracks occur. Be sure to use a waterproofing product instead of a damp-proofer product that is likely to fail.
Install Drainage Mat
Install a drainage mat with molded dimples. The material used needs to create air gaps between the wall and itself so that moisture can travel to the drain structure. The drainage mat should be cut to the exact depth of the foundation. It can also help ease lateral pressure against the foundation.
Complete the French Drain
Install the French drain or weeping tile. The pipe, 4” could be used, must be installed at the base of the footing weeping the water level below the basement floor. It is a good practice to install cleanouts, to provide easy to access for maintenance purposes.
Backfill with gravels and complete your French drain installation. Gravel should be 18″ from grade for earth areas, and 4″ from grade where cement will be poured.
Post time: Nov-10-2020