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Condensation in a house during cold weather is a common problem in Quebec, often underestimated by homeowners. The presence of condensation on windows, water on walls, or excessive humidity inside the building is never insignificant. It generally indicates an imbalance between the building's humidity, temperature, insulation, and ventilation . At GEQ – Building Consulting , our building experts specialize in the in-depth analysis of condensation and humidity problems, even when the causes are complex or invisible to the naked eye. What is condensation in a house? Condensation occurs when warm, humid air comes into contact with a cold surface , such as a window, an exterior wall, or a poorly insulated structure. The moisture in the air then turns into liquid water. During the winter months, this phenomenon is exacerbated by: Indoor heating The cold outside Increased humidity levels in well-sealed homes Why is condensation a serious problem? Repeated or excessive condensation can have significant consequences for the building and the health of its occupants: Degradation of materials (gypsum, wood, window frames) Appearance of mold and fungi Persistent odors and indoor discomfort Loss of energy performance Risks to indoor air quality In many cases, condensation is only the visible symptom of a construction defect, a deficiency in the building envelope, or a ventilation problem . What are the possible causes of condensation? The causes of condensation are often multiple and interrelated , including: Indoor humidity level too high Insufficient or poorly installed thermal insulation Presence of thermal bridges Poor airtightness Inadequate ventilation or an unbalanced ventilation system Infiltration of cold air into the building envelope This is why a simple visual inspection generally does not allow for proper identification of the source of the problem. Technical expertise is often necessary Identifying the true causes of condensation requires advanced expertise in building science . Investigation techniques may include: Precise measurement of humidity and temperature Dew point analysis Thermal bridge detection Insulation and airtightness inspection Ventilation system evaluation Use of thermal cameras and specialized diagnostic equipment These analyses require not only cutting-edge technological tools, but above all the expertise to interpret the results rigorously . GEQ – Building Consulting's expertise The experts at GEQ – Building Consulting possess in-depth knowledge of building science and solid experience in technical and legal expertise . Our approach is based on: An objective and methodical analysis State-of-the-art technological equipment A comprehensive understanding of the behavior of residential buildings Clear and defensible conclusions Our goal is to identify the real source of the condensation problem , not to offer superficial fixes that do not address the root cause. Why consult a condensation expert? Hiring a building expert allows you to: To avoid unnecessary or ineffective work To protect the value of your property To prevent the growth of mold To obtain a reliable diagnosis and lasting recommendations A swift and professional intervention can make all the difference. Need a condensation diagnosis? If you notice excessive condensation, humidity, or signs of mold in your home, don't wait for the situation to worsen . 📍 GEQ – Building Consulting Experts in building specializing in condensation, humidity and building science. Condensation maison

When buying a mobile home, attention is often focused on the condition of the siding, roof, or interior fittings. However, a critical element too often goes unnoticed: the type of foundation on which the home rests. In a significant number of cases, mobile homes rest on wooden frames, a widespread but fundamentally problematic practice. In reading numerous pre-purchase inspection reports, I regularly find that these wooden cages are neither mentioned nor analyzed. This omission is concerning, as this type of support cannot be considered a permanent foundation that meets the requirements of the Building Code. Why wooden cages do not constitute a suitable base The Building Code requires that every building rest on a structural system capable of ensuring stability, durability, and load-bearing capacity. In practical terms, this means that the structural elements must be adequately: – placed on a stable support; – anchored to the ground to resist uplift and movement; – fixed and attached to each other to ensure structural continuity; – braced to resist lateral forces, especially wind. The wooden cages used under many mobile homes generally do not meet any of these requirements. They are often simply placed on the ground or on unanchored blocks, without any real structural connection to the building. They do not form a continuous system, are not braced, and do not allow for adequate transfer of vertical and lateral loads. In addition to this, there is another major factor: the durability of the material. The wood used for these cages is frequently exposed to soil moisture, freeze-thaw cycles, and biological degradation. Over time, this exposure leads to rot, gradual sagging, and a loss of load-bearing capacity. A tolerated practice, but not compliant It is important to make a clear distinction: the fact that a mobile home has been resting on wooden frames for several years does not make this situation compliant. This is a practice tolerated in some contexts, but it does not respect the fundamental principles of structural construction. These wooden cages should be considered temporary or non-compliant supports, not a permanent foundation or base. A mobile home should instead rest on recognized supports, such as piles, stilts, properly installed concrete blocks, or a compliant foundation, depending on municipal requirements and soil conditions. A major issue during a pre-purchase inspection The absence of any mention or analysis of the wooden frames in an inspection report can give the buyer a false sense of security. However, the foundation of a building is one of the most important elements, as it determines the overall stability of the structure and future upgrade costs. In a pre-purchase inspection context, this element should always be documented, explained and brought to the buyer's attention, so that they can make an informed decision and anticipate the required corrective measures. In short, a seemingly well-maintained mobile home may nevertheless rest on an inadequate foundation. Ignoring the wooden frames means ignoring a real risk, both structural and financial.

A widespread belief is that all exterior cladding must be installed with an air gap (capillary break) behind the siding. However, this statement is inaccurate when referring to horizontally installed vinyl or steel exterior cladding. According to the Quebec Construction Code, more specifically article 9.27.2.2 and paragraph 9.27.2.2(1)(c), certain types of exterior cladding are recognized as meeting the minimum requirements for protection against water, without requiring the addition of a continuous air gap behind the cladding. Vinyl and horizontal steel cladding are examples of such coverings. Their very design incorporates a form of capillary break. Interlocking profiles, overlaps, drainage ribs, and assembly gaps create a discontinuous space that allows water to drain away by gravity and limits capillary rise into the substrate. In other words, the capillary break is intrinsic to the cladding system itself. Thus, when these materials are installed in accordance with the manufacturer's instructions and best practices, the absence of an additional air gap does not constitute a non-compliance with the Building Code. It is important to understand that the Code sets minimum requirements. Adding a continuous air gap may represent a performance improvement in certain contexts, but an improvement is not a regulatory requirement. Confusing advanced best practices with mandatory requirements too often leads to erroneous conclusions of poor workmanship. In summary: – The Building Code does not require an air gap behind horizontal vinyl or steel siding. – These two types of cladding already incorporate a capillary break by their design. – The absence of an additional air gap does not constitute a defect. – Compliance is based on adherence to the Code in force at the time of construction and the manufacturer's instructions. Before concluding that there is faulty workmanship, it is essential to refer to the applicable code, the type of coating involved, and the context of its implementation. In construction, technical nuances make all the difference.

This is a question many homeowners ask themselves every year: "If I replace the insulation in the attic of a house built in 1979, am I required to meet the new energy efficiency standards required by the Code today?" The response obtained from the Régie du bâtiment du Québec (RBQ) provides crucial insight for all those considering minor work. What the regulations actually say The RBQ first clarifies that the majority of provisions in Chapter I – Building of the Construction Code do not apply to existing single-family homes. However, one important exception remains: Part 11 of the 2015 NBC (Quebec Amendment), concerning energy efficiency , is applicable to all small residential buildings. • Building area of 600 m² or less; • Height of 3 stories or less; • Residential use (group C). But here's the key point : According to the official interpretation of the RBQ, Part 11 does not apply to the renovation of an existing building. It applies only to: • To the construction of new buildings; • To extensions; • And only to the enlarged portion when the extension does not exceed 50% of the initial area of the building. Therefore, simply partially renovating a wall, attic or basement that requires removing insulation or repairing damage does NOT trigger the obligation to bring the insulation up to current standards. In practical terms, what does this mean for a homeowner? If your work is minor and localized (e.g., replacing insulation on a section of the building, spot repairing a wall, restoration after damage), you can put back in place: • An insulation equivalent to the original one; • With the same RSI (or R) factor. Therefore, you are not required to meet the minimum insulation values required by the currently applicable Code. Beware of municipal exceptions Some municipalities may adopt stricter rules than those of the RBQ. It is therefore always recommended to check with the local urban planning department. Conclusion for the owners If your work only involves a one-off replacement of insulation and does not constitute an extension of the building: • You can replace the insulation with insulation of the same value as the original; • You are not legally obligated to meet the new insulation standards; • Energy efficiency standards do not apply to simple renovations. This clarification from the RBQ finally provides a definitive answer to a question that thousands of owners and contractors in Quebec have been asking.

When we talk about water infiltration in a building, most people immediately think of the roof or foundation. However, the most insidious and costly infiltrations often come from a simple, often overlooked element: the flashing . 🔍 The fundamental role of flashing Flashing is a piece of metal, membrane or flexible material installed at the junction between two surfaces of the building (roof, walls, openings, chimneys, etc.). Its function is crucial: to direct water towards the outside and prevent any infiltration behind the cladding or into the structure . Each opening – window, door, sill, skylight, or roof junction – should be protected by a continuous flashing system, well integrated and in accordance with the rules of the art . The Quebec Construction Code, in Chapter I – Building, clearly states this in articles 9.27.3.8 and 9.26.4.2: flashings must prevent any penetration of water into walls and structural parts . ⚠️ The consequences of poor implementation Poorly designed, poorly sealed or omitted flashing sooner or later causes: repeated water infiltration behind the exterior cladding; wood rot (lintels, rails, support posts); deterioration of insulation and air/vapor barriers ; mold growth in walls; and ultimately, major structural damage . Often, these problems remain invisible for several years, until outward signs appear: swelling of the upholstery, moisture stains, efflorescence, musty odors or degradation of interior materials. At this point, repair costs often run into the tens of thousands of dollars . 🧰 The importance of compliant implementation To be effective, a flashing must: be laid sloping outwards; overlap waterproofing materials (membrane, weather shield); be hermetically sealed at transition points; overflow slightly from the coating to allow water to drain; be installed before the flooring is laid – never afterward. A simple error in the installation sequence – such as placing the flashing above rather than below the weather barrier membrane – completely negates its effectiveness . This is why quality control and visual inspection of flashings should always be an integral part of a building inspection or survey. 🧠 The expertise of GEQ – Bâtiment Conseil At GEQ – Bâtiment Conseil , we regularly analyze cases of water infiltration where the origin of the problem can be traced back to a deficient installation or the total absence of flashing . Our team of building and water infiltration experts applies a scientific and rigorous methodology , combining visual inspection, hygrometric measurements, thermal camera and targeted surveys, in order to precisely locate the water entry points and determine the technical cause. We then recommend durable fixes according to Code requirements and manufacturers' installation guides (BP, Vicwest, Tyvek, Blueskin, etc.), to ensure long-lasting waterproofing of the building envelope. 🏠 In conclusion Flashing is an architectural detail that is often invisible... until it is missing . It represents the first line of defense against water , and therefore the best investment for the longevity of your home . Properly installed flashing means a home that remains dry, healthy and strong—year after year.

Since the entry into force of Law 16 , all co-ownership syndicates in Quebec are now required to have a contingency fund study carried out before August 2025. This requirement aims to ensure the sustainability of buildings, to adequately plan future major work and to protect the value of your investment. 🔍 What is a pension fund study? This is a technical and financial document prepared by a qualified professional, which establishes: The condition of the building's common components (roof, cladding, foundations, windows, balconies, etc.) Their remaining life and future replacement cost Annual contributions to be expected to maintain a sufficient and compliant reserve fund ⚖️ Why use GEQ – Bâtiment Conseil? Because a contingency fund study is not limited to numbers. It is based above all on in-depth technical expertise of the building . Our experts carry out a rigorous on-site inspection , analyze the actual condition of each element, and apply the standards of the Quebec Building Code , the APCHQ Performance Guide and good engineering and property management practices . 💼 Our approach: rigor, clarity and transparency GEQ – Bâtiment Conseil offers a clear, detailed and illustrated report , adapted to the real needs of your co-ownership. Our method combines: A complete technical analysis of the structure and envelope A realistic financial projection over 25 to 30 years Specific recommendations for proactive and responsible management of the pension fund 📅 A legal obligation… but above all a collective responsibility Ignoring or delaying your contingency fund study may expose your union to: Penalties for non-compliance Conflicts between co-owners Major financial surprises during unplanned emergency work 🧭 Trust a team of recognized experts GEQ – Bâtiment Conseil is a provincial network of experts in building, engineering and property management. We already support several unions in complying with Law 16 , producing their maintenance logbook , and optimizing long-term budget planning . 📞 Contact us today to schedule your pension fund study before the deadline and benefit from the support of a recognized and impartial expert .

Since the adoption of Law 16 , all co-ownership syndicates in Quebec have been required to have a contingency fund study carried out before August 14, 2028. This requirement is not a simple administrative formality, it is an essential tool to ensure the sustainability of your building, protect the value of your units and avoid unforeseen financial costs. What are the risks of delaying the study? Chronic underfunding of the fund Without a study, the annual contribution is often calculated at random, which results in insufficient funds when major work needs to be carried out (roof, parking, windows, elevators, etc.). Sudden and Expensive Special Charges A lack of planning sooner or later results in emergency dues being imposed on condominium owners. These charges can reach several thousand dollars per unit, creating a climate of discontent and sometimes even default. Loss of Resale Value Notaries, mortgage lenders, and buyers now verify the existence and quality of the contingency fund study. The absence of this document becomes a red flag that can lower the market value of a unit or cause a transaction to fail. Conflicts between co-owners: Financial improvisation leads to tensions. Some pay for unforeseen repairs, others protest, and the atmosphere in the co-ownership quickly deteriorates. Legal liability of the union Failure to comply with the law exposes the union and its board of directors to recourse from injured co-owners. Why act now? Waiting until 2028 would be a serious mistake. The longer the union delays, the more it exposes itself to: to the increasing costs of deferred work, to a snowball effect of financial deficits, and the pressure of having to produce a study urgently, without the time to choose a competent professional. A first study carried out quickly allows: to have clear and realistic planning , to set fair and progressive contributions, and above all, to protect the investment of all co-owners. Conclusion August 14, 2028, isn't a comfortable deadline; it's a legal and strategic deadline. Every month lost increases the financial, legal, and asset risks of your condominium. Acting now means taking control of your building's future. Don't let your union suffer, plan ahead. Your initial contingency fund study is the key to a healthy, fair, and safe co-ownership.

The crawl space is too often neglected by homeowners. However, it is a critical area where moisture easily accumulates and becomes the ideal breeding ground for dry rot ( Serpula lacrymans ), a dreaded fungus in the construction industry. Why is the crawl space at risk? A poorly ventilated or insufficiently protected crawl space against humidity creates an ideal microclimate for the development of dry rot: High humidity caused by insufficient ventilation, water infiltration or the absence of a floor membrane. Sensitive organic materials such as structural timber, directly exposed to stagnant moisture. Temperate temperature , often between 15°C and 25°C, which favors fungal growth. The ravages of the weeping dry rot Nicknamed the cancer of the building , dry rot attacks wood, degrading it until it is reduced to cubic dust. It progresses behind partitions, under floors and can remain invisible for years before its damage becomes apparent. Its development leads to: The progressive destruction of the structure (beams, joists, walls). Astronomical costs of decontamination and reconstruction . A significant loss of real estate value . How can we prevent this scourge? Humidity management is key: Check the ventilation of the crawl space to ensure efficient air renewal. Install a vapor barrier membrane on the floor to limit rising damp by capillarity. Eliminate any water infiltration from poorly directed foundations, drains or gutters. Maintain a relative humidity level below 60% using a suitable dehumidifier if necessary. Regularly inspect critical areas to detect early signs of mold or dry rot. In conclusion Weeping dry rot is one of a building's worst enemies because, once established, it silently attacks the very foundations of the structure. Proper moisture management in the crawl space is not an option, but an absolute necessity to protect the health of your home and avoid repairs that can cost hundreds of thousands of dollars. GEQ – Bâtiment Conseil reminds us that prevention is always less expensive than cure. A house protected against humidity is a house protected from dry rot.

Too many homeowners still underestimate the importance of annual chimney sweeping. However, this operation is not just a recommendation: it's a legal obligation. This applies regardless of the amount of wood burned during the year. A single chimney fire can turn your home into a blaze in minutes. Creosote, the highly flammable residue that builds up in flues, is unforgiving. Chimney sweeping by a certified professional can drastically reduce this risk while ensuring proper draft and efficiency in your heating system. But beyond safety, there's another often-overlooked issue: home insurance. In the event of a fire, if you can't prove that your chimney has been swept at least once a year, your insurer could refuse to compensate you. In other words, you could end up with a total loss, with no compensation. Annual chimney sweeping therefore means: • Protection against fires caused by creosote; • A legal obligation to be respected; • An essential condition for your insurance to cover your property and your residence. In summary Whether you burn two cords of wood or a few occasional logs, chimney sweeping should be done every year, without exception. Failure to do so jeopardizes not only your home and family, but also your right to compensation in the event of a disaster. Fire doesn't compromise. Neither does your insurer. Have your house swept every year.

Did you know that even with good insulation, if it is not properly installed, condensation and mold growth remain a concern? It is therefore essential to understand the implications of poorly installed insulation on foundation walls, particularly in terms of condensation and mold. Reasons for poor insulation installation: As shown in the attached photos, extruded insulation glued with glue pellets leaves an air gap between the insulation and the foundation wall allowing relative humidity to condense on the cold part of the foundation walls. This situation, which has been occurring in cold weather for decades, has encouraged the proliferation of mold microorganisms in very high concentrations, which spread fungal spores into the air, which are harmful to health. When removing the insulation panels during my inspection, we can see the formation of ice caused by this moisture migration. Consequences : 1. Condensation : When warm, humid indoor air comes into contact with cold foundation walls and condenses. Improperly installed insulation does not create the necessary barrier to prevent this from happening. 2. Mold Growth : Moisture from condensation creates an ideal environment for mold growth. 3. Air quality problems : Mold releases spores that can harm indoor air quality, posing health risks. 4. Structural degradation : Persistent moisture can affect the surrounding structure through diffusion or capillarity. Recommendations for prevention: As stated in the building code, in order to avoid the formation of condensation, the insulation must be installed continuously at all points in contact with the foundation wall. Proper choice of insulation : Use moisture-resistant materials suitable for the specific conditions of the foundations. Careful installation : Follow installation guidelines, including installing an effective vapor barrier and remembering to seal the joints between insulation panels. Humidity Management : Ensure indoor humidity control.

Today we conducted a mold investigation due to major health issues experienced by one of the occupants, manifesting through symptoms such as asthma, bronchitis, and others. When we arrived in the basement, we found at least 7 cords of wood, several of which were covered in mold and mildew. The residence is equipped with a forced-air central heating system, which draws air from the basement and redistributes it to all floors. The presence of firewood inside a residence poses several potential dangers, including: - An increased risk of fire. - An increase in relative humidity inside the residence. - Direct fungal contamination and exposure to moisture. - An infestation of insects and parasites. - The possibility of difficult access in case of emergency. It is permitted to store firewood inside a residence, but under certain conditions, including: - Limit the quantity: Store indoors only the quantity of wood needed for one or two days. - Use a suitable storage area: Choose a dedicated storage area, preferably on a hard, non-combustible surface, such as concrete. Ensure this area is properly ventilated to prevent moisture buildup. - Ensure wood is dry, clean, and sound: Before storing wood indoors, make sure it is thoroughly dry. Green or damp wood can introduce moisture and promote mold growth. - Conduct regular inspections: Regularly monitor the wood for signs of insect infestation or mold. Remove any wood that appears contaminated. - Comply with municipal regulations: Check municipal regulations regarding indoor wood storage. Some municipalities may have specific restrictions or recommendations.

As you know, the most commonly used method of basement insulation is based on the use of rigid insulation panels. This approach has excellent advantages and is widely recommended. However, in many cases, these insulating panels are installed directly on the foundation walls and secured using wooden furring strips, usually arranged vertically. It is essential to remain vigilant against poor workmanship! Over the years, I have frequently noticed that some contractors install vertical furring strips up to the level of the foundation footing. This configuration promotes the migration of moisture by capillary action, creating conditions conducive to the growth of mold hidden behind drywall and moldings, often detected late. It is important to understand that this situation constitutes poor workmanship by industry standards, causing harm to homeowners and exposing builders to legal action. It is therefore imperative to ensure that when installing the furring strips, once the concrete slab has been poured, they are in no way in contact with the slab.