Why Basements Start Leaking Water
A hard driving rainstorm or melting snow can temporarily raises the groundwater level and for every inch of rain, a 1,500 sq. ft. roof sheds almost 1,000 gallons of water. Rain gutters and downspouts get plugged up with debris. New houses have a problem with “reverse grading,” which usually occurs several years after construction. Fill dirt around the foundation settles and directs rainwater right to the foundation.
As the run-off seeps through the soft topsoil around the house, it pushes against the walls and stops at the undisturbed ground just beneath the footings. Footing drains may break as the house settles, or silt up. If the soil is clay, water then starts rising in the disturbed soil around the foundation like inside a pool.this is why Basement and foundation walls waterproofing is fundamental part of construction .
When water accumulates around the foundation, hydrostatic pressure builds up and causes the basement to leak. Clay-rich soils do not drain well and hold rainwater right against the foundation walls. Water pushes its way inside through any cracks or joints and the pores in concrete. Rising groundwater is sometimes the problem or even an underground spring. Houses settle and underground water flows change. New construction down the street may shift groundwater flows and cause basement leaks in your house.
As houses settle, concrete develops stress cracks that leak water. Exterior waterproofing disintegrates or separates due to the “alkali attack.” When water gets to embedded steel, it rusts, expands and cracks the concrete.
Efflorescence Signifies Water Seepage
Water penetrates into the pores in concrete, dissolves alkalis, and enlarges the pores. As concrete ages, it becomes more and more porous. Initially, the seeping water evaporates, leaving on the surface salts and lime. This “white deposit” or efflorescence is a telltale sign of capillary water seepage
Plastic Barriers Do Not Last
Concrete slabs, although much thinner than basement walls get even less waterproofing protection. The plastic “vapor barrier” soon disintegrates due to the lime in concrete and over time, the layer of gravel (“drainage pad”) silts up. Then, the concrete starts pulling in groundwater by capillary action.
How To Seal An Stone Foundation Wall
Unicorn Seal will strengthen and waterproof old mortar as well as limestone. Remove crumbling mortar then, seal with Unicorn Seal. Afterwards, tuck point the mortar where needed. Unicorn Seal will not inhibit the bond of mortar, adhesive, thin set, paints, tiles, etc.
How To Seal A Brick Foundation Wall
UNICORN Seal is best used on concrete. It can be used to seal brick but you can run the risk of changing the appearance of the brick (leaving a white film on the surface that would be difficult to remove). For waterproofing a brick foundation wall we recommend sealing.
Basement wall water leakage protection
we have multiple solution for basement wall waterproofing treatment .basement is area of house which in designed for peaceful environment .Water leakage in basement totally destroy the look of basement area .so do not forget get done basement and foundation walls waterproofing .