The problem: moisture penetrating from the side
Whereas in the past the basement was mainly used for storage, nowadays it is increasingly used as an extended living space. The possible uses are almost unlimited:
The problem zone basement: Especially the basement of a building is exposed to a certain permanent "basic load" of moisture due to the adjacent soil. Slope and seepage water or groundwater or flood levels increase this water load and exert hydrostatic pressure on the walls.
Subsequent exterior sealing
In the case of moisture penetrating from the side, surface waterproofing is required in the area of the house in contact with the ground. Exterior waterproofing is one of the options for waterproofing. The procedure for us is as follows:
The cause: moisture penetrating from the side
If the exterior sealing is damaged or even lacking, moisture penetrates the masonry through the area that is in direct contact with the ground. Posible damages may include staining, chipping of paint and plaster, mould infestation and even flooding in the basement.
The solution: ISOTEC exterior sealing
An overview of our approach
01 Preparing / plastering
We expose and clean the masonry which needs to be sealed. The junction between the masonry and foundation ledge is rounded out with a concave moulding. We then apply our ISOTEC Sealing Plaster. The plaster ensures ideal adhesion and an even spreading of the following sealing layer.
02 Sealing
We add a textile insert to the first layer of the bitumen and plastic emulsion (ISOTEC-VAS). We then apply another layer of the ISOTEC-VAS sealing. This way we obtain a sealing layer of at least 4 mm in depth.
03 Protect sealing / Insulate building
After the ISOTEC-VAS has dried completely, we apply special thermal insulation panels. These panels protect the insulation from damage when the ground is filled back in. In addition, they considerably improve the thermal insulation coefficient and thereby the energy balance of the building.
Structure of our exterior sealing
Benefit from our high quality
An exterior waterproofing from ISOTEC offers the highest safety and quality standards with a two-component waterproofing system. The two-layer application with full-surface reinforcement or fabric insert creates a waterproofing system that meets the highest requirements for waterproofing against moisture penetrating from the side. The substrate preparation is also the be-all and end-all here, but of course also the use of the right waterproofing material.
The ISOTEC-VAS and the ISOTEC-Kombiflex waterproofing have been specially developed for waterproofing damp-through building components in contact with the ground and are used here because of their reaction time. The ISOTEC combiflex waterproofing is UV-resistant and the fast drying time allows the excavation pit to be backfilled, depending on the project, after just 24 hours. This means that you can design and use the exterior surface again after only a short time.
The objective of subsequent exterior waterproofing is to achieve the so-called equalising moisture in the waterproofed basement walls. This is a process that - depending on the condition of the basement wall and the original degree of moisture penetration - can take up to two years. If ISOTEC renovation plaster is applied to the inside of the basement walls as a supplementary measure after the exterior waterproofing, the basement rooms can be used to a high standard more quickly.
Officially approved - scientifically confirmed
At ISOTEC we only apply systems that comply with the strictest regulations. The ISOTEC Exterior Sealing is executed in compliance with the regulations of the WTA (German scientific-technical consortium for the preservation of buildings and monuments). Our ISOTEC Exterior Sealing also complies with all requirements of the Material Testing Office of North Rhine-Westphalia.
Your advantages of our exterior sealing
Our satisfied customers
Exterior detachment at Mainz main station
Technology Building sealing
Once the cause of the damage has been clarified, the restoration begins. Step by step, we remove the damage using scientifically tested methods that have been tried and tested in practice. Depending on the cause of the damage, we also offer supplementary measures such as technical drying, mould removal or the application of a remedial plaster system. For the final waterproofing, we use concepts specially developed by our experts, each of which is specifically tailored to your problem situation.
If the cause of the damage is capillary rising damp, this can be eliminated by a horizontal barrier using the paraffin injection method. If precipitation water only slowly enters the groundwater, it presses on the outer basement walls. An exterior waterproofing system protects against this moisture penetrating from the side. If a basement exterior wall is not directly accessible from the outside, interior waterproofing offers a reliable alternative.
This is what makes ISOTEC exterior waterproofing special
The objective of a subsequent exterior waterproofing is to achieve the so-called equilibrium moisture in the waterproofed basement walls. This is a process that - depending on the condition of the basement wall and the original degree of moisture penetration - can take up to two years.
- If ISOTEC renovation plaster is applied to the inside of the basement walls as a supplementary measure after the exterior waterproofing, the basement rooms can be used to a high standard more quickly.
- An exterior waterproofing from ISOTEC offers the highest safety and quality standards with a two-component waterproofing system. The two-layer application with full-surface reinforcement or fabric insert creates a waterproofing system that meets the highest requirements for waterproofing against moisture penetrating from the side. The substrate preparation is also the be-all and end-all here, but of course also the use of the right waterproofing material.
- The ISOTEC-VAS and the ISOTEC-Kombiflex waterproofing have been specially developed for waterproofing damp-through building components in contact with the ground and are used here because of their reaction time. The ISOTEC combiflex waterproofing is UV-resistant and the fast drying time allows the excavation pit to be backfilled, depending on the project, after just 24 hours. This means that you can design and use the exterior surface again after only a short time.
Lateral moisture penetration | Layer structure ISOTEC exterior waterproofing
What to look out for in exterior waterproofing:
How is the risk of collapse of the excavation pit prevented?
How important is substrate preparation?
How is the vulnerable area of the wall-sole connection sealed?
Downloads
for exterior sealing
Download information about our solutions. In addition to overviews, you will also find further sub-trades or use cases here. We also provide GAEB service specifications for our business customers.
Flyer Außenabdichtung
277 KB
Specifications-GAEB-ISOTEC-AAD-Kombiflex
ZIP
3 KB
Specifications-GAEB-ISOTEC-AAD-VAS ZIP
ZIP
3 KB
