Frequently asked questions

wetBLOC is a polymer-based waterproofing technology for treating capillary rising damp and lateral moisture ingress in masonry.

Typical applications include capillary rising damp, lateral moisture ingress in building components in contact with the ground and damp existing masonry.

The material spreads through the masonry's capillary pore system, forming a waterproofing zone that remains vapour-permeable.

wetBLOC can be used as a capillary-active waterproofing zone in masonry, acting within the pore system rather than as a rigid barrier layer.

Yes. The waterproofing zone is permeable to water vapour, allowing residual moisture to continue drying out.

Tests under relevant standards and technical guidelines are available for assessing moisture behaviour and capillary water absorption.

For existing, older and listed buildings with mineral masonry.

Yes, particularly where solutions that preserve materials and are compatible with building physics are required. Suitability should be assessed for each property.

Yes, the system is generally suitable for salt-affected masonry. An initial assessment of the existing condition is advisable.

Completed projects include documented cases in which treated masonry has remained dry for more than 15 years. However, durability must always be assessed for the individual property and depends on the building's condition, the cause of damp and professional planning and execution.

wetBLOC and EPASIT provide a voluntary 15-year system warranty on the agreed waterproofing measure. This requires approved EPASIT products, professional application in accordance with technical guidelines and complete documentation. The warranty covers functionality against the moisture exposure defined in the remediation plan. If a functional defect covered by the warranty is demonstrated, remedial work is carried out free of charge in accordance with the warranty conditions. Statutory rights in respect of defects remain unaffected. Your executing specialist partner will provide the specific warranty conditions.

Yes. A professional assessment of the damp and damage is the basis of any sound remediation plan.

Yes. Renovation or restoration plaster is part of the system application. A suitable plaster system is used according to the damage to protect the surface and support drying.

Before waterproofing begins, the wall to be treated receives hygienic pretreatment with the approved disinfectant “Derotin aktiv”. The aim is to reduce microbial contamination and mould spores on the surface. Pretreatment ensures proper preparation of the substrate.

This depends on the property's size, moisture level and accessibility. An assessment is carried out by the specialist contractor on site.

Usually not. The work can generally be carried out while the building is in normal use. Details depend on the property.

wetBLOC is primarily a waterproofing technology against moisture. By sustainably reducing masonry moisture, it significantly reduces the conditions that support mould and microorganism growth.

The formulation contains silver ions, among other ingredients. In materials science, silver is known for its microbial-inhibiting properties and can influence the environment within masonry. However, lasting moisture reduction remains decisive for preventing mould.

Existing microbial contamination or mould is removed, where necessary, through separate measures specifically intended for that purpose.

Before waterproofing begins, the wall to be treated receives hygienic pretreatment with “Derotin aktiv”, a disinfectant approved as a biocide. The aim is to reduce microbial contamination and mould spores on the surface.

Pretreatment provides professional substrate preparation and supports clean execution of the waterproofing work.

A lasting reduction in masonry moisture deprives mould of the moisture it needs. This significantly reduces the risk of renewed mould growth.

However, the property's specific conditions and professional planning and execution are decisive.

wetBLOC is intended for use in construction and is bound within the masonry once fully reacted. According to the safety data sheet, the substance has neither endocrine-disrupting properties nor acute toxicity.

Disposal and handling of residual materials follow the applicable official regulations.

Disposal is subject to local regulatory requirements. Packaging should be emptied completely and recycled. The waste code must be determined according to use.

Application is carried out exclusively by legally independent, trained specialist partners.

No. wetBLOC is a product and system supplier. Independent specialist contractors carry out the work.

Through the wetBLOC partner finder or an enquiry via the contact form.

Yes. Specialist contractors can apply for training and partnership.

Usually within one working day.