Soudal Aquaswell - Hydro Swelling Sealant

Substrate Suitability

Soudal Aquaswell - Hydro Swelling Sealant is suitable for use on a range of construction materials, including concrete, metals, and PVC, ensuring its versatile application across a variety of settings.

However, it should be noted that Aquaswell does NOT adhere to certain surfaces such as glass, polyethylene (PE), polypropylene (PP), polytetrafluoroethylene (PTFE), and bituminous substrates.

Prior to application, it is highly advisable to conduct an adhesion test on both the target substrate and any secondary surfaces to confirm compatibility and ensure a successful, long-lasting bond.

Surface Preparation

Proper surface preparation is critical for the optimal performance of Soudal Aquaswell. All surfaces must be thoroughly cleaned to ensure they are free from dust, grease, loose particles, or any other contaminants that could impair adhesion.

Given the sealant’s ability to bond without pre-treatment, there is no need for primers; however, effective cleaning is still essential. If the sealant is being used on older surfaces, ensure any existing sealants or coatings are fully removed. The cleanliness and integrity of the substrate directly affect the bonding capacity and the ultimate effectiveness of the sealing process.

In the case of particularly challenging substrates, a wipe with a solvent like White Spirit can help to degrease the area adequately.

Application Method

Applying Soudal Aquaswell correctly ensures a watertight and gastight seal, critical for the effectiveness of the sealant in challenging environments. Aquaswell should be applied using a caulking gun for precise placement. It is important to fill the entire throughput from both sides to a minimum width of 1 cm and a depth of at least 5 cm. The sealant should be applied in such a way that the depth of the filled gap is greater than its width, thereby maximising the seal's integrity and ensuring effective water resistance.

For large or deep penetrations, it is recommended to use a polyurethane joint filler or backing rod to help achieve a consistent depth and improve the application. In these scenarios, wrapping the backing rod centrally around the pipe helps maintain consistent pressure and fill the gap adequately. Where there is a considerable void, such as with a 120 mm hole surrounding a 60 mm pipe diameter, it is necessary to use four cartridges and a joint filler to ensure a complete and watertight seal.

For smaller gaps, such as an 80 mm hole with a 60 mm pipe diameter, one cartridge will generally be sufficient. These measurements must be adhered to precisely, as failing to apply sufficient material could compromise the seal's performance. Optionally, pre-warming the tubes in lukewarm water before use can improve the extrudability of the product, making it easier to apply and enhancing final adhesion.

Finishing

Finishing the application of Soudal Aquaswell is a straightforward but essential part of the sealing process. After applying the sealant, it is advised to finish it immediately with a soapy solution, ensuring a smooth and neat finish that improves the visual appearance as well as the functional qualities of the seal.

The finishing process should take place before the sealant begins to cure, as this will allow for the material to be smoothed out without affecting its integrity. Once the finishing is completed, allow the sealant to cure fully. During this curing period, the sealant will begin to swell in contact with water, achieving its full water and gastight properties within the specified time frames.

Cleaning

Cleaning up after the application of Soudal Aquaswell must be undertaken before the sealant cures to avoid difficulty. While the sealant remains uncured, it can be removed from tools, substrates, and surrounding surfaces using either White Spirit or Soudal Swipex Wipes, which effectively remove any residue without damaging the application.

Once cured, however, the sealant becomes very robust and may require mechanical means for removal, such as a scraper or other appropriate tools. It is always recommended to wear suitable gloves during application and clean-up to avoid direct skin contact, as the uncured sealant can be quite adhesive and difficult to remove.

Other Information

Soudal Aquaswell meets stringent environmental standards, complying with LEED requirements v4.1 IEQ Credit 4.1 regarding low-emitting materials and VOC content.

The product also complies with the South Coast Air Quality Management District (SCAQMD) Regulation 1168 (2017), ensuring low levels of volatile organic compounds, which makes it a safe option for environmentally conscious building projects.

Given the wide range of surfaces this sealant may be applied to, it is always recommended to perform a small adhesion test prior to the main application. This precaution ensures the compatibility of the sealant with the substrate and avoids any potential issues in adhesion.

When used correctly, Soudal Aquaswell provides a high-performance, permanently elastic seal, ideal for demanding construction environments requiring water and gas resistance under challenging conditions.

Q) What is Soudal Aquaswell - Hydro Swelling Sealant?

A) Soudal Aquaswell - Hydro Swelling Sealant is a one-component, polyurethane-based sealant designed to create a robust, water and gastight seal in various construction settings. It is unique in its ability to swell upon contact with water, expanding up to 450% of its original volume. This swelling action makes it ideal for applications requiring high levels of water and gas resistance, such as around cable or pipe penetrations and construction joints in concrete structures. Its formulation includes polyurethane, which provides permanent elasticity, making it suitable for both internal and external use, even under constant water pressure.

Q) How does Soudal Aquaswell work?

A) Soudal Aquaswell works through a unique mechanism involving water exposure. When the sealant comes into contact with water, it begins to swell, expanding up to 450% of its original volume. This swelling action helps to fill any gaps, cracks, or voids in the sealed area, providing an extremely tight and effective barrier against both water and gas. Initially, after 24 hours of water exposure, the product swells to about 200%, reaching 300% after 72 hours, and continues to expand until it reaches 450% in environments with continuous water exposure. This capability ensures a tight seal, even in high-pressure environments, making it a reliable choice for water and gastight sealing needs.

Q) Where can Soudal Aquaswell be used?

A) Soudal Aquaswell can be used in a wide variety of construction applications, particularly where reliable sealing against water and gas ingress is crucial. It is suitable for use around cable and pipe penetrations, construction joints in both in-situ and prefabricated concrete, and the adhesion of bentonite swelling strips to rough surfaces. Its versatility allows it to be applied on both horizontal and vertical surfaces, making it ideal for both residential and commercial construction projects. However, it should not be used on certain surfaces like glass, polyethylene (PE), polypropylene (PP), polytetrafluoroethylene (PTFE), and bituminous materials, as it does not adhere well to these substrates.

Q) How do I apply Soudal Aquaswell?

A) Soudal Aquaswell should be applied using a caulking gun for precise and efficient placement. The sealant should be dispensed to completely fill the penetration from both sides, ensuring that the width is at least 1 cm and the depth is no less than 5 cm. The goal is to achieve a depth greater than the width to maximise sealing integrity. For larger penetrations, a polyurethane joint filler or backing rod can be used to support consistent depth and application. It’s also recommended to apply the sealant in environments above 5°C to ensure proper curing. If the sealant is difficult to extrude, pre-warming the cartridge in lukewarm water can make the application smoother.

Q) What is the swelling capacity of Soudal Aquaswell?

A) Soudal Aquaswell has an impressive swelling capacity, expanding up to 450% of its original volume upon contact with water. This gradual expansion occurs over several stages: it swells to 200% within the first 24 hours, reaches 300% after 72 hours, and ultimately achieves its maximum swelling of 450% under continuous water exposure. This significant swelling ability ensures that the sealant completely fills any gaps or voids, providing a reliable seal even under high-pressure conditions. This makes it particularly suitable for challenging applications like pipe and cable penetrations, where effective water resistance is essential.

Q) How long does Soudal Aquaswell take to cure?

A) The curing time of Soudal Aquaswell depends on environmental conditions such as temperature and humidity. Under standard conditions, skin formation begins after approximately 120 minutes, and it cures at a rate of around 1.8 mm per 24 hours. Complete curing of thicker applications may take several days, depending on the size and depth of the sealant applied. During the curing process, the sealant absorbs moisture from the air, which triggers the swelling mechanism. For best results, it is advisable to allow the sealant to cure fully before subjecting it to heavy water pressure or movement.

Q) What surfaces is Soudal Aquaswell compatible with?

A) Soudal Aquaswell exhibits excellent adhesion to a wide range of construction materials, including concrete, metals, and PVC surfaces. This makes it a versatile option for many construction projects where water and gastight sealing is required. However, it does not adhere well to glass, polyethylene (PE), polypropylene (PP), polytetrafluoroethylene (PTFE), and bituminous substrates. It is recommended to perform an adhesion test on the substrate before full application to ensure compatibility, especially if you are working with materials outside the typical range used in construction.

Q) How does Soudal Aquaswell handle constant water pressure?

A) Soudal Aquaswell is specifically formulated to handle environments with constant water pressure. Once cured, the sealant maintains its elasticity, which allows it to accommodate movement without compromising the seal. This is crucial for applications where the sealed joints may experience minor structural shifts or water flow. The swelling action of up to 450% ensures that any voids are filled, and the seal remains intact even when exposed to prolonged or high water pressure. The sealant is certified to withstand pressure up to 5 bar, ensuring reliability in challenging situations like underwater or below-ground sealing.

Q) Can Soudal Aquaswell be used on exterior applications?

A) Yes, Soudal Aquaswell is suitable for both interior and exterior applications. It is formulated to withstand outdoor conditions, including exposure to varying temperatures, UV rays, and constant water contact. Its permanently elastic nature ensures that it accommodates the expansion and contraction of construction materials due to temperature changes, making it ideal for outdoor sealing tasks. Its high resistance to water makes it suitable for applications such as sealing joints in basements, retaining walls, and other exterior structures that may come into contact with water.

Q) What are the advantages of using Soudal Aquaswell?

A) Soudal Aquaswell offers several significant advantages for construction projects requiring reliable water and gastight sealing. Firstly, its unique ability to swell up to 450% of its original volume upon contact with water ensures that gaps and voids are filled effectively, providing a secure seal. The sealant’s formulation based on polyurethane also allows it to remain permanently elastic, accommodating structural movements without cracking or losing its sealing properties. Additionally, its excellent adhesion to a wide range of construction materials means it can be used in various settings without the need for primers. The product is solvent-free, which reduces the risk of harmful emissions and makes it a safer choice for workers and the environment.

Q) Is Soudal Aquaswell solvent-free?

A) Yes, Soudal Aquaswell is formulated without solvents. This means that it has a lower risk of emitting harmful vapours during application, making it a safer product for both users and the environment. The absence of solvents also means that it is less likely to cause issues such as discolouration or degradation of adjacent materials. Its solvent-free formulation contributes to its compliance with environmental standards like LEED v4.1 IEQ Credit 4.1 and SCAQMD Regulation 1168, making it suitable for use in environmentally conscious building projects.

Q) How do I clean tools after applying Soudal Aquaswell?

A) Cleaning tools after applying Soudal Aquaswell should be done before the sealant cures. While the sealant is still wet, it can be easily removed from tools and surrounding surfaces using White Spirit or Soudal Swipex Wipes. These methods ensure that any residue is effectively removed without damaging the application or the tools themselves. Once cured, however, Soudal Aquaswell becomes very robust, and mechanical means, such as scraping, may be required to remove it from surfaces. It is recommended to wear gloves during both application and clean-up to prevent skin contact with the uncured sealant, as it can be quite sticky and challenging to remove.

Q) How should I prepare surfaces before applying Soudal Aquaswell?

A) Proper surface preparation is crucial for the successful application of Soudal Aquaswell. All surfaces must be thoroughly cleaned to remove dust, grease, loose particles, or any other contaminants that could impair adhesion. If the surface has any existing sealant or coating, these should be fully removed. Although Soudal Aquaswell does not require a primer for most surfaces, effective cleaning is still essential to achieve strong adhesion. In cases where substrates are particularly challenging, wiping the area with a solvent like White Spirit can help degrease and prepare it for the sealant application.

Q) Can Soudal Aquaswell be used with a backing rod?

A) Yes, a backing rod can be used with Soudal Aquaswell to help ensure consistent depth and proper application, especially in larger or deeper penetrations. A backing rod helps reduce the amount of sealant needed by filling up part of the gap, which makes the sealant application more efficient and cost-effective. Additionally, the use of a backing rod ensures that the depth of the applied sealant is consistent, which is important for achieving an effective water and gastight seal. The backing rod should be placed centrally in the gap to ensure that the sealant is applied evenly around it.

Q) What is the recommended depth-to-width ratio when applying Soudal Aquaswell?

A) When applying Soudal Aquaswell, it is important to maintain a depth-to-width ratio where the depth is greater than the width of the filled gap. Ideally, the width should be at least 1 cm, while the depth should be at least 5 cm. This ratio ensures that the sealant has enough material to accommodate swelling and to create a tight seal that resists both water and gas ingress. In larger penetrations, the depth of the sealant can be controlled by using a backing rod or joint filler, which also helps to achieve a uniform seal throughout the application.

Q) What temperatures are ideal for applying Soudal Aquaswell?

A) Soudal Aquaswell should ideally be applied in temperatures above 5°C. Applying the sealant in temperatures below this can affect the curing process, making it more difficult for the product to develop the necessary strength and elasticity. For best results, the application should be carried out in a moderate temperature range, ideally between 10°C and 25°C. Extreme cold can slow the curing process, while excessive heat may cause the sealant to skin over too quickly before proper adhesion is achieved. Ensuring the right temperature during application will help in obtaining a durable and effective seal.

Q) Is Soudal Aquaswell suitable for underwater applications?

A) Soudal Aquaswell is designed to swell upon contact with water and can be used in environments exposed to moisture or even submerged temporarily; however, it is not specifically intended for fully submerged or permanent underwater applications. The sealant’s hydro swelling properties make it ideal for areas where water ingress is a concern, such as around pipe penetrations or construction joints. If you need a sealant for constant underwater exposure, it may be worth considering other specialised products explicitly designed for continuous submersion.

Q) Can I use Soudal Aquaswell on bituminous surfaces?

A) No, Soudal Aquaswell is not recommended for use on bituminous surfaces. The sealant does not adhere well to bituminous materials, which can compromise the integrity of the seal. If you need to seal bituminous surfaces, you should consider using a product that is specifically formulated to bond with bituminous or tar-based substrates. For other surfaces, such as concrete or metal, Soudal Aquaswell provides excellent adhesion and performance.

Q) How does Soudal Aquaswell perform in fluctuating temperatures?

A) Soudal Aquaswell performs well in fluctuating temperatures due to its permanently elastic nature. Once cured, the sealant can accommodate the natural expansion and contraction of construction materials that occur with temperature changes, which is crucial for maintaining the integrity of the seal over time. It can withstand temperatures ranging from -30°C to +90°C, making it suitable for use in both cold and hot climates. Its elasticity ensures that it does not crack or become brittle when exposed to these temperature variations, providing a long-lasting and effective seal.

Q) Can Soudal Aquaswell be painted over?

A) Soudal Aquaswell can be painted over once fully cured, but it is important to use a paint that is compatible with polyurethane-based sealants. Given the sealant’s ability to swell, painting over it may lead to inconsistencies in the finish if the sealant continues to expand after water exposure. It is recommended to test a small, inconspicuous area first to ensure that the paint adheres well and that there are no adverse reactions. The flexibility of the sealant also means that it may move slightly under stress, which could cause cracking in more rigid paint finishes.

Q) Can Soudal Aquaswell be used with other sealing products?

A) Soudal Aquaswell can be used in combination with other sealing products, provided that they are compatible. For example, polyurethane joint fillers or backing rods can be used to assist in creating an effective seal. However, it is essential to avoid using it alongside products that contain solvents, as these could interfere with the curing and performance of Aquaswell. Compatibility testing is always advised when combining sealants, especially in critical applications where water or gastight sealing is necessary.

Q) Is Soudal Aquaswell resistant to chemicals?

A) Soudal Aquaswell has moderate chemical resistance, which makes it suitable for most construction applications involving exposure to water and standard building materials. However, it may not be suitable for environments where it will come into constant contact with aggressive chemicals or solvents. If chemical resistance is an important factor in your application, it is recommended to consult the technical data sheet or contact the manufacturer for specific compatibility information.

Q) How should I store Soudal Aquaswell?

A) Soudal Aquaswell should be stored in its original, unopened container in a cool and dry environment, away from direct sunlight and heat sources. The ideal storage temperature is between +5°C and +25°C. Proper storage ensures the product maintains its consistency and performance characteristics. If stored correctly, the shelf life of Soudal Aquaswell is typically 12 months from the date of manufacture. It is important to avoid freezing, as this can negatively impact the sealant’s ability to cure and swell effectively.

Q) What are the limitations of Soudal Aquaswell?

A) Soudal Aquaswell has some limitations that need to be considered during use. It is not suitable for use on glass, polyethylene (PE), polypropylene (PP), polytetrafluoroethylene (PTFE), or bituminous surfaces, as it does not adhere effectively to these substrates. Additionally, it should not be applied in temperatures below 5°C, as this can affect the curing process. While it is effective for environments with periodic water exposure, it is not specifically designed for permanent underwater applications. It is also important to ensure that the sealant is fully cured before subjecting it to heavy water pressure or movement to achieve the best results.

Q) Can Soudal Aquaswell be used for gas-tight applications?

A) Yes, Soudal Aquaswell is effective for gas-tight applications. Its formulation allows it to create a robust seal that prevents both water and gas ingress, making it suitable for sealing around pipe penetrations, construction joints, and other areas where a gas-tight barrier is needed. The sealant is certified to withstand pressure up to 5 bar, which makes it a reliable choice for use in gas duct sealing and other critical areas where the prevention of gas leakage is vital for safety and performance.

Q) How should I finish the applied Soudal Aquaswell?

A) After applying Soudal Aquaswell, it is important to finish it immediately to ensure a neat and effective seal. The sealant can be smoothed using a tool or gloved finger dipped in soapy water. This should be done before the sealant begins to cure to avoid affecting its integrity. Proper finishing not only improves the visual appearance of the application but also ensures that the seal is complete and that there are no gaps or irregularities that could compromise its water and gas resistance.

Q) What is the VOC content of Soudal Aquaswell?

A) Soudal Aquaswell has a VOC (Volatile Organic Compound) content of less than 50 g/L. This low VOC level helps the product comply with environmental standards such as LEED requirements v4.1 IEQ Credit 4.1 for low-emitting materials and SCAQMD Regulation 1168. The lower VOC content makes it a safer option for use in enclosed areas and contributes to better indoor air quality, which is particularly important for projects focused on sustainability and environmental safety.

Q) Is Soudal Aquaswell compliant with environmental standards?

A) Yes, Soudal Aquaswell is compliant with several important environmental standards. It meets the LEED requirements v4.1 IEQ Credit 4.1 for low-emitting materials and also complies with the South Coast Air Quality Management District (SCAQMD) Regulation 1168 (2017). These certifications mean that the product has a low VOC content and is suitable for use in environmentally conscious building projects where air quality and sustainability are priorities. Its solvent-free formulation further supports its compliance with green building standards, making it a good choice for projects that aim to reduce environmental impact.

Technical Data Sheet

Safety Data Sheet