Sustainable protection for your building
therlo offers professional sealing solutions to protect your building from moisture, mold, and loss of value. Secure your property sustainably and create a healthy living environment.
Long-term value preservation
Healthy Living Environment
Protection against building damage
Why professional building sealing is crucial
Prevention of Mould Formation
Increase in Property Value
Reduction in Energy Costs
Preservation of the Building Fabric
Damp Basement? Causes and Effective Sealing Methods
A damp cellar is more than just an annoyance; it endangers the building structure and your health. The causes are varied, ranging from pressing water and capillary moisture to faulty drains. Our experts precisely analyse the source of moisture and select the optimal method, whether it's an external waterproofing (vertical barrier) with thick bitumen coatings or internal waterproofing using mineral sealing slurries and renovation plaster systems. In particular, the injection method for creating a subsequent horizontal barrier effectively and permanently stops rising damp.
Our Services
Solutions for every sealing requirement
Basement waterproofing
Protection against pressing and non-pressing water.
horizontal barrier
Against capillary rising damp in masonry.
Balcony waterproofing
Permanent protection for outdoor areas against weather conditions.
Joint sealing
Specialised sealing of expansion and connecting joints.
Crack injection
Force-locking and sealing repair of cracks.
Surface sealing
For floor slabs, walls and roofs.
Wet room sealing
System solutions for bathrooms, showers, and wellness areas.
Shaft sealing
Secure sealing of light and service shafts.
Concrete rehabilitation
Repair and protection of concrete components.
From analysis to final implementation – we offer comprehensive protection for your building with specialised sealing techniques based on the latest technologies and the highest quality standards.
Protect your property
Get a non-binding consultation now
Balcony and Terrace Waterproofing: How to Protect Outdoor Areas
Balconies and terraces are exposed to extreme weather conditions, which, without an intact seal, quickly leads to damage such as cracks, spalling, and water ingress into the components below. Modern sealing systems with liquid plastic or high-quality sealing membranes offer seamless and permanently flexible protection. Professional execution, starting with careful preparation of the substrate to the final coating, not only protects the building fabric but also enhances the safety and aesthetic value of your outdoor areas and specifically prevents frost damage.
The right sealing for every type of masonry: Material science
Every masonry type places specific demands on the sealing material. Whether bricks, concrete, natural stone, or aerated concrete – the porosity and absorbency of the building material determine the choice of system. For mineral substrates, mineral sealing slurries are ideal as they form a firm bond with the substrate. For components prone to cracking, such as concrete, flexible, crack-bridging systems are used. We rely on a precise analysis of the masonry to ensure a permanently functional seal with materials such as epoxy resins or silicone resin injections.
Subsequent Horizontal Barrier: Stop Capillary Rising Damp
Rising damp is one of the most common causes of damp walls on ground floors and basements. Water from the ground is transported upwards through the capillaries of the masonry, leading to saltpetre, plaster damage, and mould. A subsequent horizontal barrier interrupts this transport path. We use proven injection methods, in which a special resin or silicone is introduced into the masonry under pressure or without pressure. This forms a water-impermeable layer and permanently dries out the wall, providing the foundation for a successful renovation.
Internal Sealing vs. External Sealing: What is the Best Solution?
The decision between internal and external waterproofing depends on the type of damage and structural conditions. External waterproofing is the most comprehensive solution as it protects the masonry from water from the outside, but it involves excavations. If this is not possible or economical, internal waterproofing offers a highly effective alternative. Here, a negative sealing layer is applied from the inside to prevent water from entering the room. Complemented by special renovation plasters that regulate moisture, a dry and healthy indoor climate is restored.
Analyse
Professional on-site damage assessment
Concept
Individual Renovation Concept
Implementation
Professional execution
Costs of Professional Sealing: What Should You Expect?
The cost of sealing a building is an investment in maintaining the value of your property. It varies depending on the method, surface area, extent of damage, and accessibility. An external waterproofing is more expensive due to the earthworks involved than internal waterproofing. The costs for a horizontal barrier or crack injection are calculated per running metre or per crack. We provide you with a transparent cost estimate that lists all necessary work steps and materials in detail, so you have a clear basis for decision-making and are protected from unexpected expenses.
Health Risks Caused by Dampness and Mould in Buildings
Persistent humidity in living spaces is the primary cause of mould growth. The spores and metabolic products (mycotoxins) of mould can significantly impair health and trigger or worsen allergies, asthma, and chronic respiratory diseases. Children, the elderly, and individuals with weakened immune systems are particularly at risk. Professional sealing deprives mould of its livelihood and is thus an active measure to protect your family's health and create a safe, hygienic living environment.
Sealing and Energy Efficiency: How to Save on Heating Costs
Damp walls conduct heat much faster to the outside than dry ones. Dampened masonry loses its insulating effect, which leads to significantly higher heating costs. A professional sealing, especially an exterior sealing combined with perimeter insulation, significantly improves the energy efficiency of your building. You not only reduce your energy costs and contribute to environmental protection, but also increase your living comfort and the value of your property through an improved energy classification.
How can I tell if my building needs new waterproofing?
For household professionals, smaller sealing tasks such as renewing silicone joints in the bathroom or sealing small, superficial cracks on the balcony can often be done independently. However, the limits of DIY are quickly reached when it comes to sealing the building envelope against pressing water or rising dampness. Mistakes in execution can lead to massive consequential damage, which is far more expensive than the original professional repair. For lasting security and the protection of your building fabric, the expertise of a specialist company is essential.
