Author of the article PHD. in Physics Juan Vinyes

Many professionals utilize the injection system of waterproofing resins to combat capillary moisture. However, they often overlook the numerous drawbacks associated with this approach against humidity.

Discover the composition of waterproofing injections on walls and uncover their key drawbacks. We present existing alternatives and identify the most effective solution for definitively eradicating capillary moisture causing rising damp.

What are chemical waterproofing injections on walls?

Injection system for the rising damp

The waterproofing injection system for wallsexecuting construction activities and creating multiple perforations in the walls. Through these perforations, waterproofing chemical resins are injected.

For the injection system to effectively address rising damp, it needs to be conducted above the wall plinth, between two rows of bricks or concrete blocks, precisely at the junction points between them.

In situations where walls have plaster and paint, one needs to tap the wall to locate the brick junctions. This process generates considerable dust and debris, which adversely impacts the wall's aesthetic appearance.

Resin injection into holes with a diameter of 12mm, spaced approximately 5 inches apart, should be executed gradually or under pressure. This ensures thorough soaking of mortar and wall bricks with resin, forming a waterproofing layer that hinders ground moisture ascent.

Restoration requires waiting for approximately 6 months to allow the water that has risen in the wall to naturally evaporate from the surface. Attempting restoration on a moist wall will result in the new components deteriorating in less than a year.

Limitations and disadvantages of waterproof injections in walls

 Much dust is lifted with drills for injections for moisture by capillarity

The approach of injecting chemical resins to combat rising damp in walls comes with several limitations:

  • Initially tapping the wall is necessary to locate the joints between bricks or blocks in walls featuring plaster layers.
  • Throughout the process of injecting waterproof substances into the walls, holes must be drilled every 5 inches, leading to harm and soil accumulation on walls and floors.
  • Injections can only be applied effectively on walls made of solid bricks without cavities, because if material is lost within the cavities, a waterproof layer can not be established.
  • Often the injected resins leak through the inlet holes , soiling the floor and wall.
  • It proves ineffective on aged walls constructed from various materials like stones, sand, and cement, as it's unfeasible to guarantee the formation of a consistent impermeable layer.
  • Fails to work on very thick walls even if injected on both sides .
  • Lacks effectiveness on thin partitions measuring less than 2 inches.
  • Fails to prevent rising damp between floor tiles.
  • Ineffective for addressing capillary moisture in basements, as moisture can also infiltrate laterally.
water proof injections for the rising damp
  • Not environmentally friendly, as the injected materials can contaminate underground aquifers..
  • Compromises the wall's aesthetics, requiring holes of 12mm every 5 inches, thereby necessitating wall restoration for aesthetic considerations.
  • Alters the structural integrity of the walls, as the entire base is punctuated with holes every 5 inches.
  • If only the walls are injected with moisture, moisture will appear on the adjacent walls.
  • The injection method proves costly due to required labor and is at least 5 times more expensive than our Electro-Physical System.
  • Injected materials lack a 30-year durability guarantee, given the absence of long-term experiences with the currently employed resins.

How remove rising damp definitively?

HS-221 system effective for rising damp

The numerous drawbacks and ineffectiveness of the injection system in walls render it a not recommended method for treating capillary moisture other alternative solutions available in the market that are much more effective for eliminating capillary moisture, such as the waterproof system HS-221 created by Humitat-Stop, specialists in moisture control.

The main advantages of the system HS-221 are:

  • The system HS-221 has gained worldwide recognition due to its verified effectiveness, reasonable pricing, global availability, and the fact that it does not require construction works to dry the walls.
  • This waterproofing system is founded on the principles of water molecule physics, demonstrating that for water to rise via capillarity through building materials' pores, its molecules must be oriented with their negative poles upwards.
  • The HS-221 system disrupts water molecules, preventing all negative poles from being oriented upwards, counteracting the capillarity effect due to very low frequency waves.
  • One of the great advantages of the HS-221 system is is its ability to effortlessly transmit these waves through walls and floors, effectively drying lower floors and basements using a single device of sufficient power, suitable for areas ranging from 50m2 to 2500m2.
  • Its electricity consumption is extremely low, less than 1W, resulting in an annual cost of around 10 USD. Although it should always remain connected to the power source, no issues arise if the power supply is interrupted for a few days, as long as it does not exceed a disconnection of 15 days; otherwise, there is a possibility of moisture reappearing due to capillarity.
  • This system is certified by CE, FCC and ICNIRP ensuring it is safety for the health of people, animals and plants. It is capable of drying brick or concrete block walls in less than 4 months. Moreover, it achieves all of this without generating noise, requiring construction, or creating mess!.
  • Additionally, the equipment comes with an extensive 30-year operating guarantee and a satisfaction guarantee, which ensures a refund of the amount paid if after one year and before two you are not satisfied.

You can provide details about your situation by getting in touch with us and sending photos. We assure you that we will respond with a diagnosis in less than 24h.