Liquid roofing is the process of making a roofing system waterproof by applying advanced polymeric coating materials like polyurethane. This provides a protective shield suitable for all roof types, whether flat, pitched, or domed.

Liquid roofing has become one of the most popular and cost-effective solutions to the problem of water ingress, lasting up to 25 years before needing any repair. This is due in part to modern advancements that have led to applying various coatings to ensure the best performance from the roofing system, making them superior to traditional roofing substrates.

Installation and Maintenance

Liquid roofing installation is quick, easy, hassle-free, and roofs with liquid roof coatings make roof maintenance relatively easy. Installation and repair work can be carried out easily, even without disturbing the building’s residents since it is a liquid system. Whether hand or spray applied, this makes it a massive bonus in commercial properties as no downtime will have to be endured.

Explore the right waterproofing liquid for your project!


KEMPEROL® is a complete resin-based liquid waterproofing system. KEMPEROL® is applied wet-on-wet and offers a distinct advantage over partially bonded, sheet membrane, or hot-applied materials by providing a seamless, UV-stable membrane that does not delaminate.

KEMPEROL® is a wide-ranging performer used for refurbishment, flat roof repair, or new build projects. Its waterproofing components are comprised of one or two-part resins with a polyester reinforcement fleece. This makes it flexible yet durable and elastomeric, allowing easy access to areas that need waterproofing.

Hydrostop EU AH-25 Liquid Waterproofing

Hydrostop EU AH-25 is a wet-on-wet, cold applied liquid waterproofing product, fully reinforced with a polyester fleece membrane. The product is based on the alpha-hybrid, silane terminated polyether technology, giving it significant advantages over conventional systems such as its application under practically any condition, including cold days above 0°C and damp surfaces. Another major appeal of the Hydrostop EU AH-25 is its application for sensitive buildings like schools, hospitals, and food production since it contains no hazardous chemicals.

It is fume-free, fast-curing, virtually odorless, and during its application, no heat or flames are involved. This makes it easy to apply without disrupting the building’s residents. It can be used to repair or refurbish existing roofing material or a completely new roofing build, especially in areas requiring complex detailing. If you are looking for options with a diverse portfolio of custom colors, the Hydrostop EU AH-25 delivers on that too.


Liquid Waterproofing

Liquid waterproofing is used in the protection of many building structures. The liquid waterproofing membrane can be hand or spray applied onto surfaces such as balconies, inverted roofs, and green roofs. This type of protection is also used in extending the service life of structures such as car parks. The liquid waterproofing membrane consists of a primer coat and two topcoats.

The liquid layer is thin, composed of polymer-modified asphalt, offering more flexibility than other waterproofing types, allowing it to expand and contract as the temperature changes. When applied, the liquid cures into a rubbery coating on the wall. Depending on the product, liquid waterproofing can be applied quickly. A three-person unit will have no trouble applying 10,000 square feet of spray-applied waterproofing in 24 hours.

The time advantage is more evident when complex spaces with lots of detailing require waterproofing such as pipes. It is easier to waterproof pipes than cutting and placing sheet membranes since it is liquid. Don’t be worried about cracks or leaking through joints either. With liquid waterproofing, there are no seams or joints. The liquid is seamless and cures to form one solid membrane.

Safety, Quality, and Value

Liquid roofing used to be applied hot before the mid-20th century. Hot applied liquid roofing is still done, but the 1960s ushered in a new and safer way of applying liquid roofing systems, which is the more popular application process in use today. Cold application. Since there is no need for hot piping bitumen, there is no danger of fires associated with liquid roofing installation today. This makes liquid roofing more affordable and, above all, safe to apply.

The value of your liquid roofing will depend on the type of material chosen and the quality of application. Though DIY projects seem fancy, it is advised to use a professional service that specializes in liquid roofing to give you the best ROI (return on investment). When applied correctly, you can expect to have 15 years of quality protection.


Liquid roofing provides a proper monolithic roof coating, which means no seams and no joints. Seams and joints mean water can seep in. Liquid roofing prevents that and provides waterproof protection.

Another important advantage of liquid roofing system is that it is composed of materials that actively resist water pooling. It is designed to withstand standing or pooling water even through freeze and thaw cycles.

Liquid roofing provides a cool roof value, enabling the roof to stay reflective. Cold air stays outside, and hot air stays inside. This helps improve the energy efficiency of the building.

Matt HAuthor: Matt Holder

Matt Holder is our in-house writer. Matt has been working in the construction industry for 10 years. From working on-site to integration himself into our office.


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