Global energy renovation in Oise (60)
A global energy renovation in Oise (60) consists of coordinating several improvements to the home rather than addressing heating, insulation or ventilation separately. This approach takes into account the existing construction, any possible damp, heat loss and the way the equipment operates. In the department, requirements differ greatly between newer detached houses, old stone village homes and properties equipped with ageing boilers. The aim is therefore to establish a coherent order for the work before replacing the systems that consume the most energy.
Tip: have your energy performance certificate (DPE) and energy bills to hand for a more accurate estimate.
Why carry out a global energy renovation in Oise
In the detached housing areas in the south of the department, many homes built from the 1980s onwards have accessible lofts and a relatively regular structure. The problem often lies in insulation that has become insufficient, air leakage around ducts or loft hatches and poorly adjusted ventilation. A global approach then makes it possible to improve the building envelope, correct uncontrolled air leakage and check indoor air renewal before sizing a new heating system.
In the north and east of Oise, older stone houses require a different method. Thick walls have useful thermal inertia, but they may also be affected by rising damp. Installing a system that is too impermeable without treating the cause risks shifting the problem elsewhere. In some protected towns and villages where the exterior appearance must be preserved, internal insulation may be preferred. The strategy must therefore combine compatible materials, moisture vapour management and heating adapted to genuinely reduced needs.
What a global energy renovation includes
Assessment of the home and definition of priorities
A global energy renovation begins with an overall assessment of the building: walls, roof, windows, ventilation, heating and hot water production. This analysis helps avoid carrying out work in an unsuitable order. In particular, it identifies the areas responsible for the main heat losses and the constraints that may influence the rest of the project.
Treatment of the building envelope
Lofts, walls, floors and openings are examined to identify areas where the envelope needs to be improved. In a detached house, loft insulation may take priority. In an older property, the choice of materials also depends on how the walls behave in relation to moisture. The aim is to reduce demand before changing the technical systems.
Adapting the heating system
An old boiler should not be replaced without checking what the property will require once the envelope has been improved. The new heat generator is assessed according to the remaining needs, the existing radiators or underfloor heating and the installation constraints. This approach helps avoid selecting equipment sized for a building that will no longer have the same thermal characteristics.
Ventilation and air circulation
Improving airtightness without checking ventilation can reduce indoor air quality. The project therefore takes account of air inlets, extract vents, ductwork and how they operate. This check is particularly important when loft insulation is upgraded or old windows are replaced with more airtight models.
Coordination of the different work packages
A complete project must organise the work in a logical sequence. Insulation, airtightness improvements, any electrical adaptations, ventilation and heating systems are not independent of one another. Coordinating them helps avoid reopening areas that have already been completed and maintains consistency between the technical choices made for the whole building.
Typical situations in Oise
Detached house from the 1980s or 1990s with accessible loft space
The property may have a sound structure but compressed insulation, air leakage around services and poorly functioning ventilation. The project can therefore begin with the envelope and air renewal before assessing the boiler or a possible heat pump.
Older stone house in a village
Thick walls affected by damp cannot be treated in the same way as modern masonry. The cause of the moisture must first be understood, overly impermeable solutions should be avoided and the ability of the walls to manage water vapour must be preserved. Internal insulation can be considered where the exterior appearance needs to remain unchanged.
Detached house heated by gas or oil
In Oise, this may lead to considering replacement of the heat generator, but only after reducing the building’s heating needs. The existing emitters, their operating temperature, the available space and the layout of the plot must also be checked before choosing new equipment.
Grants and funding
Depending on the nature of the project and the eligibility conditions, several schemes may be available: MaPrimeRénov’, CEE (energy savings certificates), reduced VAT and éco-PTZ (zero-interest eco-loan). Some grants require the use of an RGE-certified professional and may depend on the combination of planned improvements. It is therefore useful to check the applicable rules before signing commitments related to the work.
You can contact us to structure the different parts of your project and identify the technical elements to prepare. To check the official conditions of public schemes, support pathways and applicable requirements, also consult France Rénov’.
How we work
Assessment of the existing property
We examine the layout of the home, its walls, equipment and the constraints that may influence the project.
Prioritisation of needs
We distinguish improvements that should be addressed first from those that depend on the initial work.
Definition of the renovation plan
Insulation, ventilation, heating and hot water systems are organised within a shared approach.
Preparation of the work
We define the interfaces between the different trades in order to limit incompatibilities or unnecessary rework.
Final consistency check
Once the choices have been made, we check that the planned equipment remains suitable for the expected level of demand after the building has been improved.
Our other services in Oise
Depending on the needs of the property, you can also consult our pages on heat pumps in Oise, insulation in Oise, thermodynamic water heaters in Oise and energy audits in Oise. You can also find our page on energy renovation in the department, the Hauts-de-France page and our local information for Beauvais.
Frequently asked questions
Should the boiler be replaced first?
Not necessarily. If the building envelope still has significant heat losses, replacing the heat generator first may result in choosing an output suited to needs that will later decrease. It is generally more coherent to assess insulation, airtightness and ventilation first, then determine the appropriate heating system.
Can a stone house undergo a global renovation?
Yes, but the nature of the walls requires specific precautions. Damp, rising moisture, existing renders and the ability of materials to allow water vapour to move must be assessed before insulation is added. The renovation plan should respect the way the older building works rather than applying a solution designed for a newer construction.
Why is ventilation part of the project?
When lofts, walls or windows become more airtight, uncontrolled draughts are reduced. Air renewal must then be provided in a controlled way. Checking the ventilation helps prevent improvements to the envelope from creating condensation, indoor moisture or poor air circulation problems.
Is an energy audit useful before several improvements?
It provides a structured overview of the property and allows several renovation scenarios to be compared before the main work begins. In a department where relatively recent detached houses and older homes coexist, this stage helps adapt the order of the work to the actual construction rather than applying the same method to every building.
Let’s talk about your project
Tell us about your home and your goals: we help you prioritise the works and identify the grants worth looking into.