07 Apr All You Need to Know About Basement Waterproofing
You should know that heavy rain and melted snow can fall through cracks or leaks in the foundation. This is where it can warp floorboards, rust appliances and turn finished rooms into mildewed messes. But, you’re in luck as you can regrade or reroute it to correct most drainage problems. This is why you should consult Spotless Trades for waterproofing contractors in Melbourne for the best in waterproofing services.
Basics of Outdoor Waterproofing
Ensure that you stop water from leaking through your foundation and gutters is the first line of defense. Gutter and downspout systems protect your home from precipitation but they can also compound the drainage problems by concentrating roof runoff at the house’s corners, close to the foundation. When clogged gutters overflow, water can pool around your foundation. This is why you should remove any leaves and debris left over from winter then install leaf guards to keep them clear.
In order to carry water away, you should attach a slopped ladder to each gutter and guide water at least 10 feet from the foundation. You can also use downspouts to dump it directly into an underground catch basin. In that case, the runoff should be carried through a solid drainpipe to a dry well and this is an in-ground perforated tank that collects water and lets it seep into the ground. These high impact plastic dry wells are easy to handle and work efficiently on small drainage problems. While larger pre-cast concrete drywells require machinery to install, it will handle larger volumes of water.
Those houses without gutters have a problem caused by water splashing against the foundation. In this case, a collection system should be installed at the roof’s drip line. You should dig a V-shaped trench, line it with thick plastic and lay in a perforated pipe, pitched towards a drywell or outlet pipe. Then, you should cover the pipe with a landscape fabric to keep the dirt out and fill the trench with stones to allow water to leach through the topsoil and into the pipe.
Types of Drainage System Options
The two types of drainage systems are surface and subsurface. Surface drainage works perfectly with clay-based soils. On the other hand, subsurface drainage is generally best suited for soil with high sand and silt content. The typical surface system consists of shallow open trenches leading to one or more dry wells. This empties into the a deep runoff trench dug in the lowest corner of the yard. Open trenches are the most effective way to carry away excess water on the ground surface.
Subsurface drainage systems consist of several French drains that carry off water from poorly drained areas through collection pipes that are linked to a deep runoff trench dug in the lowest corner of the yard. Some of the best places to put french drains are on the bases of slopes, retaining walls and where water usually collects.
In order to build a french drain, you should dig a sloped 3 foot deep trench to carry water away from the area to be drained. Then, you should line the trench with landscape fabric to keep surrounding soil out and keep the gravel porous so that the water flows easily. Then, install a 4 to 6 inch perforated drain at the bottom of the trench and backfill it with 4 inches of gravel. The entire system of drainpipes should connect to a 6 inch solid collection pipe that goes all the way down to the run off trench.
Interior Waterproofing Measures
There are many steps for internal waterproofing, the first involves sealing cracks and holes in the concrete walls of the foundation with hydraulic cement. The cement will expand inside the fissures and create a water tight seal. Then apply a coat of waterproof masonry cement to the basement walls. These efforts with proper above-ground drainage will prevent moisture from coming through the walls. Sump pumps with a battery-backup system will continue to run even if the electricity goes out during heavy flooding. This rechargeable battery will operate for 7 to 10 hours before recharging is needed. The batteries should be replaced every 2 years. You can use water powered sump pumps that rely on water pressure not a rechargeable battery to keep pumping during a blackout.