Waterproofing balconies and terraces is essential to ensure the durability and longevity of these spaces. In this article, we will explore different modern and sustainable solutions for your construction or renovation project.
The challenges of waterproofing balconies and terraces
Balconies and terraces are exposed to bad weather throughout the year, which can cause waterproofing problems such as water infiltration into the walls, deterioration of concrete or even corrosion of metal frames. In addition to being unsightly, this damage can cause significant structural problems that are costly to repair. The waterproofing of balconies and terraces is therefore essential to preserve these spaces and guarantee their longevity.
Waterproofing solutions for balconies and terraces
Liquid waterproofing systems
Liquid waterproofing systems (LSS) are made of elastomeric resins or polymer-modified cements. These products are applied to the surface using a roller or brush, then dry to form a continuous and elastic membrane preventing water from penetrating. SELs offer great flexibility and easily adapt to the complex shapes of balconies, terraces and passageways. They are also resistant to UV, abrasion and chemical agents.
Sheet-based waterproofing systems
Sheet-based waterproofing systems, also called prefabricated membranes, are made of materials such as modified bitumen, synthetic rubber or PVC. These membranes are placed on the surface of the balcony or terrace, generally welded together to create a watertight seal. Sheet-based waterproofing systems offer a high lifespan and strong resistance to weather, UV and mechanical stress.
Draining and permeable coatings
In addition to traditional waterproofing systems, there are coatings specifically designed to optimize drainage or control water evacuation on balconies and terraces. These coverings help limit the risks of water infiltration while having a careful aesthetic that can be adapted according to the tastes and requirements of the project:
- Permeable concrete cellular slabs: they facilitate the infiltration of water into the ground and reduce drainage problems;
- Grass slabs: installed on a draining substrate, these slabs can accommodate lawn while ensuring effective drainage;
- Permeable paving: made of materials specific to drainage joints, this covering allows the rapid evacuation of water.
Choosing the Right Waterproofing Solution for Your Project
Choosing the most suitable waterproofing solution for your balcony, terrace or courtyard must take into account several criteria:
- Support constraints:
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- it is important to check the compatibility between the waterproofing system and the support on which it will be applied;
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- Use of the balcony or terrace: if the space is intended to be frequented regularly or used as a place to relax, it is essential to choose a comfortable and resistant covering;
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- The budget available: waterproofing systems can vary significantly in terms of price, so it is necessary to compare the options in order to select the one that best suits your budget while still offering satisfactory performance;
- Aesthetic requirements: certain waterproofing systems are available in different colors and finishes, allowing you to personalize the appearance of the balcony or terrace according to your preferences.
Maintenance and upkeep of waterproof balconies and terraces
Good maintenance is crucial to maintaining the waterproofing of balconies and terraces over the long term. It is important to clean these spaces regularly to prevent the accumulation of dirt, debris and other pollutants that could damage the waterproof surface. In addition, it is necessary to periodically inspect the condition of the waterproofing membrane and make the necessary repairs in the event of detachment, cracks or other signs of deterioration. Preferably, consult a professional specializing in balcony and terrace waterproofing work to ensure that your system remains optimal.
