What Is External Waterproofing?

Because crack injections are not always appropriate, the best way to keep your basement dry may be to install an outside waterproofing membrane. These conditions include having a finished basement, having a masonry foundation wall (brick, stone, or concrete block), having a porous concrete foundation, and coming over the top of the foundation. Crack injections are useless in these circumstances.

Coating that is used as a waterproofing membrane for the exterior of the foundation and is applied to its exterior. Before water reaches the foundation wall and has an opportunity to pass through or over it, it is intended to restrict the flow of water.

If your basement or crawlspace is finished or used for storage, this prevents the water from causing harm to the foundation wall itself, other parts of the building, or your personal possessions.

A plan for keeping water out of the construction must be in place while a piece of real estate is being constructed. There is always a chance that moisture will seep into earth-retaining structures, or buildings that are in direct contact with the ground. If this happens, the building could sustain structural damage. This is especially true for newly built cellars, basements, and any other underground constructions.

Earthen retaining walls frequently encounter an increase in the amount of hydrostatic pressure being applied to them as a result of rising water tables in the area. Since external waterproofing is the first line of defense against water intrusion, it should always be taken into consideration.

When constructing a new basement, an external waterproofing system should be used on the exterior of the basement's earth retaining walls to either minimise or entirely eliminate water infiltration. Your new basement will be safer from harm if you do this.

Hydrostatic pressure that may be pressing on a structure can be blocked and redirected using external waterproofing systems that include moisture-resistant coatings and Geodrain membranes. The application of an exterior waterproofing system will enable this. This reduces the possibility that any internal waterproofing systems will fail and that water will enter the structure. There is a significant reduction in the possibility of water leaking into the cellar or basement in any way.

We would always advise combining an external waterproofing system, also known as Type A, with either an integral waterproof structure or an internal cavity drain membrane, also known as Type C. Always recommending this is what we mean by (Type B).

As the topic of internal waterproofing of basements has already been covered in great detail elsewhere, we will now focus on the subject of external waterproofing of cellars and basements. This tutorial will lead you through the various external waterproofing techniques and explain how they each work.

Real estate management includes the process of waterproofing your house, which is crucial and vital. This is particularly true if you want to save money by staying away from the expensive hazards of flooding, moisture infiltration, and all the other issues that come with an inadequately secured structure.

In light of this, what varieties of waterproofing systems are available for installation on your property and which of those systems is best for you? External waterproofing, often known as "Type A Waterproofing," is also known as tanking. This page should address any queries you may have concerning external waterproofing in general or tanking in particular.

Let's look at what to expect specifically with relation to the outside waterproofing of a structure that is buried underground before we move on to anything else. You might be perplexed by the phrase used to describe the kind of exterior waterproofing used on constructions that are situated below ground.

Type A waterproofing, barrier protection, and tanking are some of the different names for it, but they all refer to the same thing: the application of external waterproofing to a structure that is situated below the ground.

This detailed instruction manual will bring you through the waterproofing procedure step-by-step. It is usual practice to apply a type of watertight coating in the form of a liquid slurry to the walls of the cellar or basement when speaking of applications on the exterior of a structure. Usually, this is carried out during the beginning of the building's construction.

This technique is also referred to as "barrier protection" since it creates a barrier that is watertight all the way around your basement. Its layer prevents any water from penetrating it and is entirely waterproof. As a result, the basement will stay dry and habitable for as long as the waterproof coating is in good condition.

You may be sure that your home will be in compliance with official Waterproofing Standards if it is submitted for certification because everything here was constructed in line with BS 8201 Waterproofing Regulations, which is where the label Type A comes. We at Hitch Property Constructions offer the broadest selection of waterproofing services available to address any water-related issues you may be experiencing.

HOW EXACTLY IS A WATERPROOFING MEMBRANE FOR THE OUTSIDE INSTALLED?

The installation of an outside waterproofing membrane is a pretty simple procedure if the problem has been correctly diagnosed. There isn't much digging necessary when the issue is caused by water leaking through the top of the foundation. The membrane only needs to be applied up to a depth of six inches below the foundation's highest point. When the problem at hand is water seeping through the masonry of the foundation wall or the porous concrete of the wall, complete excavation up to the depth of the footings is often required. Installing an outside waterproofing membrane involves the following steps:

• Removal of all potential obstructions, including roads, patios, walkways, pavers, landscaping, and any other obstructions.
• The foundation wall beneath the problem region is currently being excavated.
• I was washing the foundation wall and filling in any gaps I could see.
• The waterproofing membrane should be a thick liquid when troweled on when it comes to installation. Depending on the temperature and humidity, curing this material can take anywhere from a few hours to a few days.
• In addition to acting as a supplementary waterproofing barrier, the drainage board I'm presently constructing guards against damage to the outside waterproofing membrane during backfilling of the excavation.
• To remove the extra water to a sump pump system or daylight by gravity, an outside drain tile system would be constructed at a footing depth in very wet soil outside a foundation wall. To keep the soil from becoming unstable, this would be done.
• The excavated material is subsequently backfilled into the trench in lifts of twelve inches, and each lift is then crushed. After completing this process, the landscaping can next be given the final touches. The excavation will probably encounter some modest settlement, which is to be expected.

If water is seeping through your foundation walls or entering through the top of your foundation, get in touch with Midwest Waterproofing for a free assessment. Our specialists can help you identify the source of the water as well as the best exterior waterproofing membrane installation for your specific needs.

While installing a PermaSEAL external waterproofing system, the following three steps should be taken:

PRIMING

Spray the substrate with Kiesol MB (for Multi Tight MB2K+) or Kiesol Waterproofing Liquid (for cementitious waterproof coatings) (external wall)

FIRST-STAGE WATERPROOFING

Apply two coats of Multi Tight or Multi Tight MB2K+ external waterproofing with a brush or trowel.

ADDITIONAL WATERPROOFING

• Apply Geodrain to the area.
• The upper border of the membrane is sealed by geodrain capping strips.

PRODUCTS

SEVERAL TIGHTENING

The two elements that make up Multi Tight are a thick bituminous layer and a solvent-free, polymer-modified mineral waterproofing grout. Flexible waterproofing of structures is accomplished with this product. Since it can permit expansion and cover any potential future cracks, the flexibility is crucial. In addition to already existing bitumen-based substrates, Multi Tight is able to produce a solid adhesion to any and all mineral substrates. You can have complete confidence in its functionality because it retains its water pressure-tight integrity even with a negative water load.

GEODRAIN PERMASEAL 8

The external waterproofing membrane known as PermaSEAL 8 Geodrain enables unhindered water flow through the filter cloth and into the cavity.

TECHNIQUES FOR EXTERNAL WATERPROOFING

We advise combining a main and secondary waterproofing system with a priming stage when it comes to exterior waterproofing solutions. This will guarantee total watertightness of the system. We at Hitch Property Constructions provide a wide range of waterproofing services for building exteriors.

PRIMING

Priming is often the first step in the waterproofing process for an outdoor surface. Spraying a primer, such as Kiesel Waterproofing Primer or Kiesol MB Primer, on the surface of the outer structure is the first step in priming it. This causes the pores in the brickwork to close, creating a surface that repels water. In the initial step of the waterproofing process, primers are applied, and this creates a chemical link with the waterproof coating.

THE MAIN WATERPROOFING TECHNIQUES

Applying a watertight solution directly to the outer wall is the first stage in waterproofing a building. In this case, waterproofing the substrate using a substance like the waterproofing compound Multi Tight might be beneficial. These carefully designed coatings maintain their resistance to water infiltration despite their high compression strength even when put under a lot of strain.

EXTERNAL MEMBRANES ACT AS A SECOND WATERPROOFING LAYER

Installing an outside waterproofing membrane is advised. This serves as a drainage system to quickly remove any possible water and lessen the force of hydrostatic pressure acting on the structure. Also, the membrane protects the primary waterproofing by acting as a barrier, which is crucial when it comes to the backfilling procedure. Also, when the backfill assumes its ultimate shape, it serves as a slip membrane.

These membranes have a number of studs that collectively form a hollow (like the studs on an egg box). As a result, any water that might collect can readily flow into a land drain or French drain by descending the cavity. Please refer to the information below for more information on drains. The drain directs the water to the proper point of evacuation, such as a soakaway, a mains drain, or a sump chamber with a pump. Another filter, often referred to as Geotex, is contained within the membrane itself. This filter may be a layer of fabric or an internal polypropylene layer. Fine particles won't be able to enter the drainage system as a result and cause issues.

If you employ the external waterproofing strategy mentioned above, you will have a primary and secondary waterproofing barrier. When you use all of these distinct strategies together, the likelihood of errors is significantly reduced.

You can be confident that the external masonry waterproofing will move with the building as it settles or if it moves in the future. In either case, it will continue to be useful in keeping water out of the building. These two technologies are both quite flexible.

DRAINAGE

We shall look more closely at the drainage options for freshly built basements in the paragraphs that follow. As part of your external waterproofing system, you must include a drainage system to transport water to an inside sump chamber or soak away point.

FRENCH DRAINS AND OTHER DRAINAGE TECHNIQUES

If you want to create an additional line of defense against water seepage into your basement, installing a land drain, sometimes referred to as a French drain, is an excellent idea. All around the basement's perimeter, these are situated at slab level.

In essence, the space is surrounded by a trench, and inside of that trench is a perforated pipe that has been covered in gravel or crushed stone.

A sump chamber, a mains drain, or a soakaway are where water is eventually sent after passing through the membrane and gravel when it comes into touch with the outer surface. This section should be covered with a geotextile membrane to stop small particles and other debris from clogging the pipe. Access points and jetting locations also need to be included in the annual maintenance.

PUMP AND A SUMP

The Sump and Dual Pump systems are designed to remove groundwater from cavity drain membrane systems, as stated in the prior text. They frequently combine a sump chamber with a pump, and frequently use two pumps in the event that one of the pumps stops working. Also, the system needs to include a shut-off valve so that the pumps may be serviced. An other smart move is to have a battery backup in case the power goes out.

You have the option of either purchasing our PermaSEAL Basement Sump and Pump System, which includes everything you require, or reading more about the functionality of the sump pump system.

WHEN SHOULD YOU USE TYPE A EXTERNAL WATERPROOFING?

It's likely that waterproofing a basement won't always be accomplished by installing barrier protection on the exterior of a structure. This is owing to the fact that barrier protection, a sort of waterproofing, works best under conditions where the presence of moisture poses the greatest threat to a below-ground building.

This is because barrier protection, a kind of exterior waterproofing, works best when used in circumstances where the property is located in an area free from running water and other sorts of immediate flood dangers. This is because your home will be completely protected against water using an external waterproofing technique called barrier protection.

Because of this, any free-flowing water that presses against the sides of the underground structure on your property will just build up and exert more pressure, which could lead to the basement's walls giving way and collapsing.

Barrier protection waterproofing can be difficult to apply when sprayed on the outside; this is only one of several difficulties. Once the barrier has been put in place, it's likely that the water will be channeled to a different area below the earth, which might lead to higher loads and pressures of water accumulating. As a result, the walls of your property are put under stress and may eventually bow, which would completely negate the waterproofing's effectiveness.

Barrier protection waterproofing is usually performed during the building process in the vast majority of cases because the application of external barrier waterproofing necessitates the complete excavation of the region around the walls of the below-ground structure. Remembering this fact is equally important.

Furthermore, it necessitates that the application be executed faultlessly. If this doesn't happen, there will be more problems with water infiltration. Nevertheless, until the excavation has been backfilled and the waterproofing solution has started, there isn't really a way to tell if the application has been successful.

WHAT ACTUALLY IS THE GOAL OF EXTERIOR WATERPROOFING?

Regrettably, some property owners don't recognize the importance of applying an external waterproofing coating to the underground areas of their structures. Some might believe that these properties don't require protection because they are buried underground and are therefore protected from storms and other types of intense precipitation.

Sadly, the reality is far different despite this. Floods and other structural problems can all be brought on by improper or nonexistent waterproofing, which poses a serious threat to properties with below-ground infrastructure.

Think at how the ground can take in dew, rain, and other types of moisture. Contrary to total flooding of a home caused by rivers overflowing their banks or anything similar, this is by far the most frequent route for water and other liquids to enter a basement.

Water finally finds its way to the subsurface after entering the ground with its moisture. Naturally, this results in the earth becoming wet, and if that wet ground is then pushed up against your property, there is a chance that moisture will be transferred from the ground through the outside wall of your basement. What does that actually mean?

Your basement may be overly moist, which is the first answer that comes to mind. To be more precise, it might refer to penetrating damp, a kind of damp that, if left untreated, will only worsen with time. The overall structural integrity of the building may be compromised since this damp might naturally lead the structure to expand. This could eventually result in a leak emerging, which, in addition to flooding your basement, could cause other defects in the basement walls in addition to the fact that you will have to deal with the dampness in the wall as a problem to be rectified.

It only scratches the surface of the various issues that may arise from insufficient waterproofing. While it is true that moisture deteriorates building materials, it can also provide the perfect conditions for the formation and spread of black mould, which could have detrimental effects on one's health.

For many years, the term "tanking" has been used to describe internal or external watertight barriers that are intended to shield below-ground structures from groundwater.

Type A Systems, which include external tanking, are defined in Standard 8102:2009 as "The Code of Practice for the Protection of Below Ground Buildings from Water in the Ground" and can take the form of a sheet or liquid membrane, cement render, or slurry. To prevent damage to underground facilities from groundwater, follow the guidelines laid out in this standard. The construction phase and progress of a project determine the material used, which is often just one part of an integrated waterproofing strategy.

• Externally, such as using the Newton HydroBond System, is a good example.
• The Newton HydroSeal System can be used internally (on the down side) or externally to apply Type A waterproofing solutions.

In the past, these watertight tanking systems were often made using bitumen or another liquid with an asphalt foundation. As a result, the term "black tank" is still commonly used in the industry to describe exterior tanking. While liquid products were eventually replaced with polymer-modified bitumen sheets, these sheets are not without their own problems.

Because of this, there has been a lot of innovation and change over the years to solve the issues with partly bonded bitumen sheets.The end result is a set of cutting-edge tanking products that offer a safer solution and work together to create a tanking system that is both more compact and uniform in its makeup. While you're here, take a look at our internal waterproofing services in Melbourne.

Conclusion

The best way to keep a basement dry is to install an outside waterproofing membrane, such as moisture-resistant coatings and Geodrain membranes, which can be combined with an integral waterproof structure or an internal cavity drain membrane. External waterproofing is the application of watertight coating to a structure that is buried underground, creating a barrier that is watertight all the way around the basement. Hitch Property Constructions offers waterproofing services to address water-related issues, including an outside waterproofing membrane for the outside. PermaSEAL external waterproofing membranes require three steps: priming, applying two coats of Multi Tight, applying Geodrain, and geodrain capping strips. Geodrain enables unhindered water flow through the filter cloth and into the cavity.

External membranes act as a second waterproofing layer, protecting the primary waterproofing by acting as a barrier and providing a drainage system to transport water to an inside sump chamber or soak away point. Install a land drain, sump chamber, mains drain, or soakaway to protect your basement from water seepage. Barrier protection works best when used in an area free from running water and other flood dangers. Barrier protection waterproofing is important for properties with below-ground infrastructure, as it can prevent flooding and other structural problems caused by improper or nonexistent waterproofing. Tanking is used to protect below-ground structures from groundwater, and can take the shape of anything from a sheet or liquid membrane to cement render or slurry. The Newton HydroBond System is a cutting-edge tanking system that offers a safer solution and works together to create a more compact and uniform system.

Content Summary

1. Because crack injections are not always appropriate, the best way to keep your basement dry may be to install an outside waterproofing membrane.
2. Coating that is used as a waterproofing membrane for the exterior of the foundation and is applied to its exterior.
3. To reduce or prevent the passage of water through your external earth-retaining walls when you are building a new basement, you should employ an external waterproofing system.
4. The application of an exterior waterproofing system will enable this.
5. As the topic of internal waterproofing of basements has already been covered in great detail elsewhere, we will now focus on the subject of external waterproofing of cellars and basements.
6. This tutorial will lead you through the various external waterproofing techniques and explain how they each work.
7. Real estate management includes the process of waterproofing your house, which is crucial and vital.
8. Type A waterproofing, barrier protection, and tanking are some of the different names for it, but they all refer to the same thing: the application of external waterproofing to a structure that is situated below the ground.
9. This detailed instruction manual will bring you through the waterproofing procedure step-by-step.
10. Installing an outside waterproofing membrane involves the following steps:Removal of all potential obstructions, including roads, patios, walkways, pavers, landscaping, and any other obstructions.
11. In addition to acting as a supplementary waterproofing barrier, the drainage board I'm presently constructing guards against damage to the outside waterproofing membrane during backfilling of the excavation.
12. To remove the extra water to a sump pump system or daylight by gravity, an outside drain tile system would be constructed at a footing depth in very wet soil outside a foundation wall.
13. If water is seeping through your foundation walls or entering through the top of your foundation, get in touch with Midwest Waterproofing for a free assessment.
14. Our specialists can help you identify the source of the water as well as the best exterior waterproofing membrane installation for your specific needs.
15. While installing a PermaSEAL external waterproofing system, the following three steps should be taken:PrimingSpray the substrate with Kiesol MB (for Multi Tight MB2K+) or Kiesol Waterproofing Liquid (for cementitious waterproof coatings) (external wall)First-stage WaterproofingApply two coats of Multi Tight or Multi Tight MB2K+ external waterproofing with a brush or trowel.
16. Techniques for External WaterproofingWe advise combining a main and secondary waterproofing system with a priming stage when it comes to exterior waterproofing solutions.
17. Applying a watertight solution directly to the outer wall is the first stage in waterproofing a building.
18. If you employ the external waterproofing strategy mentioned above, you will have a primary and secondary waterproofing barrier.
19. As part of your external waterproofing system, you must include a drainage system to transport water to an inside sump chamber or soak away point.
20. If you want to create an additional line of defense against water seepage into your basement, installing a land drain, sometimes referred to as a French drain, is an excellent idea.
21. Pump and a sumpThe Sump and Dual Pump systems are designed to remove groundwater from cavity drain membrane systems, as stated in the prior text.
22. Barrier protection waterproofing can be difficult to apply when sprayed on the outside; this is only one of several difficulties.
23. Barrier protection waterproofing is usually performed during the building process in the vast majority of cases because the application of external barrier waterproofing necessitates the complete excavation of the region around the walls of the below-ground structure.
24. What Actually Is the Goal of Exterior Waterproofing?Regrettably, some property owners don't recognize the importance of applying an external waterproofing coating to the underground areas of their structures.
25. Naturally, this results in the earth becoming wet, and if that wet ground is then pushed up against your property, there is a chance that moisture will be transferred from the ground through the outside wall of your basement.
26. Your basement may be overly moist, which is the first answer that comes to mind.
27. The overall structural integrity of the building may be compromised since this damp might naturally lead the structure to expand.
28. This could eventually result in a leak emerging, which, in addition to flooding your basement, could cause other defects in the basement walls in addition to the fact that you will have to deal with the dampness in the wall as a problem to be rectified.
29. While it is true that moisture deteriorates building materials, it can also provide the perfect conditions for the formation and spread of black mould, which could have detrimental effects on one's health.
30. For many years, the term "tanking" has been used to describe internal or external watertight barriers that are intended to shield below-ground structures from groundwater.
31. This standard outlines a code of conduct for safeguarding underground infrastructure against groundwater.
32. The type of substance used depends on the construction process and how far along the project is, and it is frequently a component of a more complete waterproofing system.
33. The Newton HydroSeal System can be used internally (on the down side) or externally to apply Type A waterproofing solutions.
34. In the past, these watertight tanking systems were often made using bitumen or another liquid with an asphalt foundation.
35. As a result, the term "black tank" is still commonly used in the industry to describe exterior tanking.
36. However, despite the fact that the original liquid products were swapped out for pre-made, polymer-modified bitumen sheet products, these products can still present their own set of issues.
37. The end result is a set of cutting-edge tanking products that offer a safer solution and work together to create a tanking system that is both more compact and uniform in its makeup.
38. While you're here, take a look at our internal waterproofing services in Melbourne.