Ensuring effective waterproofing during facade renovation

Ensuring effective waterproofing during facade renovation


Effective waterproofing during facade renovation offers crucial advantages. Rigorous preparation, a thorough knowledge of legal standards and skilful budget management ensure a job well done. The importance of regular inspection and proper maintenance is also stressed.

The fundamentals

Ensuring effective waterproofing when renovating building facades requires several key elements. The quality of the materials used is paramount, especially specific, weather-resistant waterproofing products such as bituminous membranes or waterproof coatings.

Technical application rules must be respected: clean the substrate before application for optimum adhesion, apply in successive coats to reinforce waterproofing, and allow to dry between each coat.

The initial diagnosis is crucial to correctly assess the condition of the facade and determine the type of intervention required: simple repair or complete revitalization with the installation of a globalwaterproofing solution.

This type of work requires a qualified professional with the skills required to work to building standards. Incorrect installation can lead to serious problems such as seepage or premature deterioration of the exterior cladding. We recommend Harmonie, an expert in this field: https: //www.harmonie.fr

Preparing the intervention

Façade diagnosis

A thorough diagnosis of the facade precedes any intervention. Its purpose is to identify building failures and waterproofing problems. Cracks, peeling paint or efflorescence indicate poor sealing. A professional must carry out this diagnosis to find any anomalies and offer appropriate solutions.

Choice of materials

Selecting the right materials for a facade renovation is crucial to ensuring a good seal. There are various types of plaster, such as thin and thick coatings, each with its own specific characteristics in terms of waterproofing and weather resistance. The choice depends on the substrate (stone, concrete, brick), the local climate and the building’s architectural constraints. To reinforce the overall waterproofing, a waterproofing coating may be advisable.

Assurance of legality

There are many facets to ensuring the legality of a waterproof facade renovation. It’s crucial that the contractor is a competent expert, with the necessary qualifications and accreditations to carry out this kind of work. A company certified as a “Reconnue Garant Environnement” (RGE) environmental guarantor is often the preferred choice, as it guarantees services that comply with current standards.

Monitoring the Local Urban Planning Scheme (PLU) or the Land Use Plan (POS) is also essential. These documents define local urban planning regulations and may impose certain restrictions on the external appearance of buildings.

It is also important to consider :

  • Legal requirements for facade restoration every 10 years in certain neighborhoods.
  • Prior declaration to be made to the town hall for any significant change to the external appearance of the building.
  • The possibility of a permit application if the restoration work includes external insulation.
  • Strict compliance with DTU waterproofing standards.
  • Essential insurance, such as decennial insurance, which protects the owner against any deterioration that could compromise the property’s robustness or alter its use for 10 years after the work has been completed.

You should also make sure that the professional you select has professional liability insurance covering this specific type of intervention.

Budget management

Managing the budget for a facade renovation requires extreme attention to detail. A precise financial plan must be drawn up, taking into account the various costs associated with the project: materials, skilled labor, rental of specific equipment and administrative costs. Expenses related to waterproofing must be anticipated to avoid inconvenience. Careful selection of the professionals who will work on the site is essential. Skilful financial management guarantees the success of your restoration project, ensuring a long-lasting watertight seal without putting a strain on your wallet.

Carrying out the work

Carrying out the restoration

The façade restoration process begins with a complete diagnosis. The aim is to determine the current state of the structure, potential anomalies and the type of intervention required. This is followed by cleaning to remove dirt, moss and other impurities that can affect the adhesion of new materials. Once the surface has been cleaned, the next step is to repair or replace any damaged parts.

Setting up elasticity

An essential step in the restoration process is the development of an effective strategy to ensure optimum waterproofing. This usually involves the rigorous application of a waterproofing product to the entire exterior surface, after any necessary repairs have been carried out. Meticulous work in this phase can significantly extend the lifespan of the cladding and prevent problems associated with water infiltration, such as mould or premature deterioration of the building.

Inspection and maintenance

Assessment of the outcome

After a facade renovation, it’s essential to assess the result to ensure effective waterproofing. This requires rigorous monitoring of the work carried out to ensure that all cracks and defects have been properly addressed. In addition, the applied coating must be thoroughly inspected for any imperfections that could compromise waterproofing.

Lifetime extension

Once the success of the work has been confirmed, appropriate measures must be implemented to prolong the durability of the restoration work carried out. We recommend the use of specific products to protect the coating against weathering and other environmental factors that can have an impact on its longevity. Aregular maintenance plan should be drawn up, including periodic cleaning and occasional repairs where necessary.

Predicting and preventing complications

Anticipating potential problems can save significant time and unnecessary costs in the long term. Constant observation will make it easier to quickly detect any early signs of damage or water infiltration.

Professionals can use a variety of technological tools, such as thermal imaging cameras or ultrasonic devices, to identify any signs of future problems as early as possible.

Façade restoration doesn’t end with the completion of the work. Checking and maintenance are equally crucial phases in ensuring effective, long-lasting sealing.