There are a few common reasons why your garage floor feels wet. The most common is old fashioned condensation, otherwise known as sweating. The issue could also be caused by poorly installed concrete (moisture below the slab). There is a simple test you can perform to find out which you are dealing with.

What causes moisture on a garage floor?

For many homeowners, the reason for a slick garage floor is condensation. Condensation occurs when moist air comes into contact with the cool concrete of the garage floor. Upon this meeting of two conflicting temperatures, the air begins to cool below the dew point, condensing on the concrete’s surface.

How do I stop moisture coming up in my concrete floor?





Methods Used to Stop Moisture in Concrete Floors

  1. Low-permeance Vapor Barrier or Retarder. A Low-permeance vapor Barrier or retarder can effectively keep below-slab moisture from reaching the flooring system. …
  2. Allow Natural Drying of Concrete Slab. Ad. …
  3. Keep Excavation Free of Water.

Why is the concrete in my garage damp?

When warm, humid air comes in contact with a cold concrete slab, water vapor in the air can condense on the surface of the concrete in the same way that a glass with ice sweats in summer. This usually happens more in the spring and early summer, since the ground temperature is still low and the air is warm and humid.

Do you need to damp proof a garage floor?

When damp proofing a concrete garage floor, a plastic dimpled membrane is required if the floor is going to be boarded (either with chipboard, plywood or similar) or if a concrete screed is going to be laid. You might consider a slimline membrane which is ideal if you intend on laying carpet over your floor.

Can you get rising damp through a concrete floor?





Floors can be equally as likely to suffer from moisture ingress and penetration. Concrete floors especially can create problems that can be more difficult to solve. Concrete is a naturally very porous material and water can rise up or travel through capillaries which can lead to damp floors and mould issues.

Can water come up through concrete garage floor?

Water seeping up through a concrete garage floor is often the result of a seasonal rise in the water table. It’s hard to control deep soil moisture around the house, but you can address water on the garage floor by fixing these flaws.

How do I stop my garage floor from getting damp?

If you are having issues with condensation, try the following:

  1. Decrease the dampness/humidity of the air with a dehumidifier.
  2. Increase air temperature in the garage.
  3. Change the garage floor surface – Our Garage Flooring is an ideal solution.
  4. Check door seals.

Why is my concrete floor always wet?



SSS happens from moisture that accumulates from the difference between the inside air temperature and the floor temperature. When the air vapor cools down and matches the floor temperature, condensation forms on the concrete, this is also known as concrete sweating. Safety is a top concern for all businesses.

How do I stop my garage floor from sweating?

Increase air circulation within the garage

Another method that can be effective at reducing garage floor sweating is to run a fan to increase air circulation across the floor. If the air near the concrete surface cannot rest long enough to cool, then it will not condense.