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Benefits of choosing Mastic Asphalt
to waterproof your stairway
Expert Asphalt Waterproofing in London.
Keep your property dry and protected with
our expertise.
Why Asphalt Waterproofing?​
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Long Lasting
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Recyclable
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Carbon Neutral
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Versatile Applications
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Expert Installer
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Attractive Finish
Mastic Asphalt Waterproofing Service: Trust the Experts at Bell Asphalt Co.
Are you looking for a reliable mastic asphalt waterproofing service for your home or commercial property? As one of the leading asphalt contractors in the area, we provide high-quality asphalt waterproofing solutions using the latest mastic asphalt technology. Our experienced team of installers has extensive experience in applying mastic asphalt for waterproofing basements, terraces, and rooftops. We guarantee our work and ensure your property remains leak-proof. Our asphalt waterproofing methods are long-lasting and provide complete protection from water ingress.
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Our Asphalt Waterproofing Services
​Balcony Waterproofing
Our Asphalt Balcony Waterproofing service applies multiple layers of liquid asphalt to balcony surfaces and seams to prevent water penetration. Asphalt forms a smooth protective barrier that is highly durable and resistant to water damage.
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Asphalt Roof Waterproofing
We are the best roofing company in London. We provide high-quality flat roof waterproofing services that prevent water damage. Our experienced professionals inspect the roof and apply the best waterproof coatings or membranes, protecting your property from rain or snow. Contact us today for an expert flat roof waterproofing solution to avoid costly repairs.
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Asphalt Basement Waterproofing
We work to protect the water in your basement. Sealants and epoxy are ideal if your walls are unfinished, need simple repairs, or want to eliminate mold. Interior waterproofing is suitable if groundwater causes moisture, excavation space is limited, and your basement is unfinished with concrete. Exterior waterproofing is best if you have a finished basement, are ready to invest fully, want a damp-free living space, and water runs toward your basement from outside.
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Asphalt Terrace Waterproofing
We offer terrace waterproofing to prevent water infiltration, which can cause cracks, mould growth, and costly repairs. Maintaining a clean terrace and scheduling professional inspections enhance the effectiveness of waterproofing, protecting property value, and ensuring a healthy living environment.
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Asphalt Driveway and Pathway Waterproofing
We offer asphalt driveway and pathway waterproofing services. Asphalt is a popular driveway choice in London due to its durability and cost-effectiveness. It provides quick installation and with proper maintenance, lasts up to 20 years. Asphalt’s flexibility allows it to withstand heavy loads and temperature changes without cracking. Regular maintenance enhances its longevity, solidifying asphalt’s status as a reliable pathway material.
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Asphalt Crack and Joint Sealing
Our company provides asphalt crack and joint sealing services to help protect and extend the life of asphalt pavements. Crack and joint sealing is vital to prevent moisture from entering the asphalt, which can cause damage over time. We have specialized equipment to clean and route cracks and joints, removing old sealants or debris. Sealing cracks and joints within the first few years can gain 5-7 additional pavement performance. Our timely crack sealing helps prevent moisture damage, prolongs the pavement’s lifespan, and ensures a smooth, puddle-free surface for driving.
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Asphalt Damp Proofing
We offer asphalt damp-proofing services to waterproof foundations and basements. It involves applying a layer of hot or cold bitumen or asphalt on the basement walls and floor to prevent moisture seepage. Asphalt forms an effective moisture barrier and also protects against soil gases. It is more cost-effective than other damp-proofing methods and provides long-lasting protection against dampness and mould growth.
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Why Choose Bell Asphalt Co.
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London’s top-rated Asphalt Waterproofing service provider
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Professional expert team
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Established in 1971
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53+ Years of Experience
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Use Quality materials in all work
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Affordable pricing
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Offer guarantees and warranties
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Excellent customer service
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Case Studies and Testimonials
Showcase successful projects you have completed in the past.
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Call Now for a Free Estimate!
Protect your home from water damage year-round with professional asphalt waterproofing. Call now for a free estimate to waterproof your basement, foundation, or roof with a durable asphalt coating that protects against flooding and leaks. Waterproof today!
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FAQs on Asphalt Waterproofing
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What is Asphalt?
People use asphalt for many transportation purposes. It is a mix of materials that form roads, parking lots, train tracks, ports, runways, bike lanes, sidewalks and sports fields.
​Asphalt contains aggregates, binders, and fillers. Aggregates are crushed or natural materials like rock, sand, gravel, or slag byproducts. To help the environment, more waste materials are now part of the mix.
​Bitumen is the most common binder material. However, researchers are developing bio-based options to reduce harm to the planet.
​An average asphalt surface has multiple layers of material. These layers spread out vehicle weight before it reaches the base ground below. The different materials in asphalt work together to construct and maintain areas for transportation use.
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What is Asphalt Waterproofing?
Asphalt waterproofing is a type of waterproofing system that uses asphalt, a dark brown or black viscous liquid or semi-solid form of petroleum, as the primary material. Asphalt is applied to surfaces to prevent water from penetrating.
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How many types of Asphalt?
There are different kinds of asphalt for roads and parking lots. The most common is hot mix asphalt made by heating rocks and tar. Others include warm mix asphalt made at lower temperatures, cold mix for quick fixes, thin pavement for existing surfaces, milled asphalt from grinding old pavement, porous asphalt that water can pass through, and dense graded mixes with uniform-sized rocks. Each type has pros and cons for different uses.
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What is the use of Asphalt?
Asphalt is used for roofs, flooring, soundproofing, waterproofing and building parts. Some asphalt is mixed with water to make a liquid with tiny bits of asphalt. This liquid asphalt is used in some products.
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How many types of materials and techniques are used in asphalt waterproofing?
Several kinds of waterproof materials are used on buildings. Some are liquids or tar coatings. Others are plastic sheets or cement mixes. Each type is suitable for different situations.
Asphalt Steps Waterproofing Procedure
Prior to commencing the waterproofing process using mastic asphalt, it is essential to confirm that the substrate is suitable for the application of asphalt.
• Mastic Asphalt is a highly resilient waterproofing system with a proven track record of lasting for more than 30 years.
​• Mastic asphalt is recyclable and has carbon zero status.
​• The use of an asphalt mixer eliminates the need for a flame during the works.
​• Asphalt is suitable for intricate detailing.
​• Solar Protective coating provides a neat finish and disperses heat from the asphalt steps.
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Removing The Old Asphalt Waterproofing
It is necessary to remove any existing asphalt carefully to prevent damage to the substrate. Any leftover asphalt on the substrate should be eliminated using an abrasive sanding machine to ensure complete removal of all mastic asphalt.
Subsequently, the substrate must be examined to verify that the surface is entirely flat and dry to allow the asphalt to adhere properly. If this is not the situation, any imperfections should be corrected by applying rendering or pouring concrete. When addressing substrate repairs, it is crucial to guarantee that everything is fully dry and free of dust before applying the primer.
Priming The Substrate
After ensuring that the substrate is thoroughly dry and free of dust, it is time to proceed with applying the primer. A high-bond primer is necessary for the substrate. This is important because using a bitumen primer can lead to issues such as oil rising to the surface due to heat in the summer months, resulting in common problems like blows on asphalt steps. The primer will take approximately 1-2 hours to dry once applied.
Laying The First Coat Of Mastic Asphalt To The Steps
Mastic asphalt is the initial waterproofing layer applied to asphalt steps. Specifically designed for roofing, this roofing-grade mastic asphalt is commonly utilized in asphalt roofing projects.
The side stringers are first coated with asphalt to a thickness ranging from 7 to 8 mm. This coating is applied up to the prepared termination chases. Following this, the risers will be coated with their initial layer of mastic asphalt.
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Applying the Top Coat Of Mastic Asphalt To The Steps
The next step involves applying the final layer of mastic asphalt to the treads of the steps being waterproofed. This top coat includes a fine 3mm grit mixed with the asphalt to enhance grip and durability, ensuring the steps can withstand foot traffic over time.
To indicate the level to which the asphalt should be applied, a batten is positioned 12-15mm above the riser on each tread. The asphalt is then poured from the bucket up to the marked height on the batten. Subsequently, coarse sand is scattered over the asphalt tread and pressed into the mastic asphalt coating. This sand rubbing process is carried out after covering the entire tread, resulting in a rough finish. Following this, the team will clear away excess sand and take out the battens that were used to guarantee the correct 15mm height of the coat.
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Applying The Top Coat To The Upstands
To enter the chase, the upstands on a mastic asphalt staircase should be a minimum of 150mm high and pointed with sand and cement mortar upon completion. The top coat thickness for these asphalt upstands should be 7-8mm. Similar to the asphalt treads, coarse sand will be applied to this top coat of mastic asphalt.
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Angle fillets are used to join the horizontal to the vertical in an Asphalt Staircase
In order to finish waterproofing the asphalt steps, it is necessary to connect the vertical components to the horizontal ones first. As previously stated, the vertical part of the risers in the asphalt was connected to the horizontal part of the treads using a double angle fillet. To ensure a strong bond and complete waterproofing of the steps, the same process should be repeated between both the treads and risers, with the upstands running along the strings of the staircase. The application of angle fillets is essential for achieving waterproofing of the asphalt steps, while also serving as the most decorative aspect of the staircase.
Finishing the Asphalt Steps with a UV Solar Reflective paint
After completing a set of steps, it is crucial to apply solar reflective paint to ensure their longevity. This is necessary because during the summer, the sun can heat the asphalt, leading to potential slumping. Moreover, the sun can extract the bitumen from the asphalt, causing it to appear dull and worn. While solar reflective paint cannot completely eliminate the sun's impact on the asphalt, it significantly reduces its effects. For newly installed asphalt steps, two coats of solar protective paint should be used. This paint should be applied to the treads, risers, and stringers. Typically, the finish of this solar protective paint is a light grey or white colour. To maximise the lifespan of your steps, it is essential to reapply the solar reflective paint every 5 to 7 years as part of regular maintenance.
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