Self Adhesive Waterproofing: Types, Applications, Standards, Installing, and Protection
Self adhesive waterproofing is a type of waterproof membrane that consists of rubberized asphalt or bituminous compound. Self adhesive waterproof membranes are mainly two types such as bituminous self adhesive membranes and polymer self adhesive membranes. These membranes can be used for waterproofing roofs, basements, bridges, foundations and tunnels.
The recommended properties of the self adhesive waterproof membranes should be aligned with the EN (European Standard) test methods and their approved values.
You can install self adhesive waterproof membranes by following these steps. First, you should prepare the surface. Then, apply primer on the surface if the manufacturer requires it. Then, install the membrane on the surface. After that, you should prepare seams and overlaps for better sealing. Lastly, you should inspect and maintain the self adhesive membranes regularly.
You can protect self adhesive membranes by applying a protective coating on the layer, using protective boards or mats, backfilling the membrane carefully, using a drainage board over the membrane and doing regular maintenance and repairs properly.
A self adhsive membrane can be damaged due to puncturing or tearing, exposing the membrane to UV radiation, applying the membrane on dirty or uneven surfaces, using incompatible chemicals and allowing the membrane to do heavy foot traffic.
What is Self Adhesive Waterproofing?
Self adhesive waterproofing is a type of waterproof membrane that consists of rubberized asphalt or bituminous compound. Self adhesive membranes can be applied on the surface by peeling and sticking. Self adhesive waterproof membranes are always easy to install, have immediate waterproofing capability, are durable, and require less maintenance. Hence, you can use self adhesive membranes on roofing, basements, and foundations.
What are the Two Types of Self Adhesive Waterproofing?
Self adhesive waterproof membranes are made from mainly two parts. Base material and reinforcement. Base material is the primary waterproofing layer while reinforcement is added for strength and stability.
According to the base material, self-adhesive waterproofing is mainly two types
Bituminous self adhesive waterproof membrane
Bituminous membrane self adhesive waterproof membranes are made from rubberized asphalt or bitumen. This layer is reinforced with the polymer film. These layers are mainly used for roofs, foundations, and basements.
Polymer Self adhesive waterproof membrane
Polymer-based self-adhesive waterproof membranes are made of composed materials like TPO (thermoplastic polyolefin) or EPDM (ethylene propylene diene monomer) for enhanced flexibility and durability.
Where to Use Self Adhesive Waterproofing?
You can use self adhesive waterproof membranes for these purposes
- Roof waterproofing
- Basement waterproofing
- Foundation waterproofing
- Bridge waterproofing
- Tunnel waterproofing
Roof waterproofing
Self-adhesive waterproofing membranes are highly effective for roof waterproofing due to their ease of installation and immediate waterproofing capabilities. These membranes create a seamless barrier that prevents water infiltration, which is essential for protecting the roof structure and underlying materials from moisture damage.
Their flexibility allows them to conform to various roof shapes and accommodate thermal expansion and contraction. Additionally, they provide excellent adhesion to a variety of substrates, ensuring a secure fit. This is particularly important in areas prone to leaks, such as valleys, eaves, and around roof penetrations, where water can easily seep in and cause significant damage if not properly sealed.
Basement Waterproofing
Self-adhesive waterproof membranes can be applied for basement waterproofing. Because it creates a continuous, impermeable barrier that blocks water from entering the structure. This is essential for preventing mold growth, structural damage, and the deterioration of interior finishes.
The self-adhesive nature of these membranes ensures a tight bond to the concrete or masonry surfaces, even in challenging conditions. Their ability to bridge cracks and gaps further enhances their effectiveness, providing long-term protection against water intrusion and maintaining the basement's integrity.
Foundation Waterproofing
Self adhesive waterproof membranes are crucial in maintaining the structural integrity of the foundation by preventing the freeze-thaw cycle that can lead to cracks and damage. The self-adhesive property ensures a strong bond to the foundation surface, creating a durable and continuous waterproof barrier.
This barrier not only protects the foundation from water but also from soil-borne chemicals and gases that can cause deterioration over time. By keeping the foundation dry, these membranes help to extend the life of the building and prevent costly repairs.
Read more: What you Should Know About Foundation Waterproofing?
Bridge Waterproofing
Self-adhesive waterproofing membranes are used on bridges to protect the structure from water damage and corrosion.
Bridges are constantly exposed to harsh environmental conditions, including rain, snow, and road salts, which can penetrate the concrete and steel components, leading to deterioration and structural issues. The waterproofing membranes form a resilient barrier that prevents water and chemicals from reaching the structural elements of the bridge.
Tunnel Waterproofing
Self-adhesive waterproofing membranes are essential for preventing water ingress, which can lead to structural damage and operational disruptions. Tunnels are often constructed below the water table or in areas with high groundwater levels, making effective waterproofing a necessity.
These membranes provide a continuous, watertight barrier that adheres securely to the tunnel lining, preventing water from seeping through joints and cracks. Their robust adhesion and flexibility enable them to withstand the pressures and movements typical in tunnel environments
What are the Specification and Standards for Self Adhesive Waterproofing?
These are the EN (European Standard) test methods and their approved values for the self adhesive waterproof membranes.
| Standard | Technical Characteristic | Recommended Values |
| EN 1848-1:1999 | Length | ≥ 10 m |
| EN 1848-1:1999 | Width | 1 m |
| EN 1848-1:1999 | Straightness | Deviation ≤ 20 mm per 10 m length |
| EN 1849-1:1999 | Thickness | 4 mm |
| EN 12311-1:1999 | Tensile properties: Maximum tensile force | ≥ 600 N/50 mm |
| EN 12311-1:1999 | Tensile properties: Elongation | ≥ 40% |
| EN 12310-1:1999 | Tear resistance (nail shank) | ≥ 200 N |
| EN 12730-A:1999 | Static load resistance | 20 kg |
| EN 12316-1:1999 | Peeling resistance of joints | ≥ 100 N/50 mm |
| EN 12317-1:1999 | Shear resistance of joints | ≥ 450 N/50 mm |
| EN 1107-1:1999 | Dimensional stability | ≤ 0.3% |
| EN 1109:1999 | Flexibility at low temperature | ≤ -20°C |
| EN 1296:1999 | Resistance to artificial aging | Pass |
| EN 12954:2001 | Root resistance | Pass |
| EN 1928:2000 | Watertightness | Pass |
| EN 13501-1:2007 | Reaction to fire classification | Class E |
| EN 13653:2004 | Resistance to impact | ≥ 10 J |
How to Install Self Adhesive Waterproofing Membrane?
You can install self adhesive waterproof membrane by using the below step by step guide.
- Prepare the surface: First, you should prepare the surface for self adhesive waterproofing. You should clean, and dry the surface free of debris and contaminants. You can use a pressure washer, wire brush, or chipping hammer for surface preparation.
- Apply primer on the surface: You should apply a primer on the surface if manufacture is recommended. Primer helps to improve the adhesion of the self adhesive membranes.
- Apply the waterproof membrane: You should install the waterproof membrane. You should align the material carefully, peel off the backing, and press firmly in place. Use a roller to ensure good contact and eliminate air bubbles.
- Prepare seams and overlaps: While installing the waterproof membrane, you should overlap the seams, usually 2-3 inches and press down firmly to ensure a water tight seal.
- Inspect the self adhesive membrane and maintenance: After installing process, you should check for gaps or loose areas after installation and periodically inspect for damage or wear over time.
How to Protect Self Adhesive Waterproofing?
You can protect self adhesive waterproofing by following these steps
- Apply protective coating on the layer
- Use protective boards or mats in the self adhesive membrane
- Backfill the self adhesive membrane carefully
- Use a drainage board over the self adhesive membrane
- Do regular inspections and maintenance
- Apply protective coating on the layer self adhesive membrane: Apply a UV-resistant coating or an additional protective membrane layer over the self-adhesive waterproofing membrane. This helps protect the membrane from UV radiation, which can degrade the material over time, leading to reduced effectiveness and premature failure.
- Use protective boards or mats on the self adhesive membrane: Install protective boards, mats, or sheets over the membrane, especially in high-traffic areas. This shields the membrane from mechanical damage caused by foot traffic, equipment, or other activities that may puncture or tear the self adhesive membrane.
- Backfill the self adhesive membrane carefully: When installing the membrane in below-grade applications like basements or foundations, ensure that the backfill material is free of sharp objects and properly compacted. This prevents punctures and abrasions from rocks, debris, or uneven pressure during the backfilling process, ensuring the membrane remains intact and effective.
- Use drainage boards over the self adhesive membrane: Install drainage boards over the membrane to facilitate water drainage and protect the membrane from hydrostatic pressure. This helps manage water pressure and movement around the structure, preventing water buildup that could compromise the waterproofing and lead to leaks.
- Regular inspections and maintenance: You should conduct regular inspections of the waterproofed area to check for any signs of damage, wear, or degradation and perform maintenance as needed. Early detection and repair of any issues ensure that small problems do not escalate into major failures, thus maintaining the integrity of the waterproofing system.
How to Damage a Self Adhesive Waterproofing Layer
These are the 5 ways to damage a self-adhesive waterproofing membrane:
- Puncturing or tearing the membrane with sharp objects.
- Exposing the membrane to prolonged UV radiation without protection.
- Applying the membrane on a dirty or uneven surface.
- Using incompatible or harsh chemicals on or near the membrane.
- Allowing heavy foot or equipment traffic directly on the membrane.
