High-quality Sherwin Williams Loxon XP polyurethane masonry sealant over brick
Understanding the Importance of Exterior Waterproofing
Exterior waterproofing is an integral aspect of maintaining the structural integrity and functionality of healthcare facilities and other large commercial buildings. It’s not just about keeping water out; it’s about protecting the building and ensuring a safe, healthy environment for its occupants. This article aims to provide facility managers, facility engineers, and property owners with valuable insights into the benefits of exterior waterproofing, particularly focusing on surfaces such as stucco, block, EIFS (Exterior Insulation and Finish Systems), window joints, and building expansion joints.
Surfaces: Stucco, Brick, Block, EIFS
Stucco, Brick and Block
Stucco and block surfaces are commonly used in commercial buildings due to their durability and aesthetic appeal. They are not, however, immune to water damage.
Stucco is prone to cracking and chipping over time. As that happens, water seeps into any open area and exacerbates related issues. A quality, silicone-based coating is a great option for these types of exterior walls as it can cover all small cracks and allow for the inevitable movement of the building. If there are larger cracks in these surfaces, your waterproofing team will caulk them first and then apply the coating on top.
Brick and block have their own issues, as untreated either of these materials can be porous and hold moisture. As well, even when a brick or block wall is coated, the mortar joints will degrade and crack over time, and allow for air and water intrusion. To properly repair these mortar joints, you will want a team that is experienced in tuck-pointing.
Waterproofing these surfaces prevents water infiltration, which can lead to structural damage, mold growth, and reduced insulation effectiveness. By applying a high-quality waterproofing sealant, you can extend the lifespan of these surfaces and maintain the building’s exterior appearance.
EIFS
EIFS offers excellent insulation and aesthetic flexibility, which means it is frequently preferred by architects. It is, however, particularly susceptible to water damage. EIFS is a relatively soft material, which is what provides design flexibility, and that is also the downfall. Anything that bangs into these walls, such as materials carts or lawn equipment, can easily cause a breach in the surface. Once the surface is compromised, EIFS acts like a sponge and soaks up water.
Additionally, the standard factory coating of EIFS is often thin and provides little protection against the elements or damage.
Any damage to EIFS needs to be fully repaired by an expert before it is coated. Simply coating over damage is not sufficient waterproofing of this material.
Proper waterproofing is crucial for preventing moisture penetration that can lead to structural deterioration and mold issues. A specialized waterproofing treatment for EIFS not only protects the building but also maintains its thermal efficiency.
Check out a few photos:
Window Joints
Window joints in large buildings are critical points for water ingress. There are two sets of joints that need attention in windows: the perimeter joint that goes all the around the full window frame, and the glazing joints which are the glass to metal joints where the window panes meet the frame.
Over time, these joints can become less effective due to building movements, temperature changes, and wear and tear. The extreme Florida heat can be particularly difficult on the caulk in these joints. Urethane caulk has a limited lifespan of about 5 years. We generally recommend silicone caulk for window joints as it lasts longer, is more UV stable, and accommodates more building movement.
Implementing a robust waterproofing solution for window joints is essential. It prevents water leakage, which can cause significant interior damage and lead to costly repairs. Additionally, effective waterproofing around window joints enhances energy efficiency by preventing air leaks.
More examples in our Gallery:
Building Expansion Joints
Expansion joints are designed to accommodate the natural movement of buildings. However, these joints are potential weak points for water entry, especially in large structures like hospitals and commercial buildings. These joints are caulked during initial construction, and as we established earlier, caulk has a lifespan. Silicone caulk is frequently the best choice for these joints and it has a maximum lifetime of 20 years, though this is often cut short in the weather conditions in Central Florida.
Maintaining a true waterproofed state for these joints is crucial for preventing water ingress, which can compromise the building’s structural integrity and lead to expensive maintenance issues.
Here are a few examples in our Gallery:
The Benefits of Exterior Waterproofing
Long-Term Cost Savings
Investing in quality exterior waterproofing can result in significant long-term cost savings. By preventing water damage, you reduce the need for frequent repairs and maintenance, ultimately saving money.
Enhanced Building Longevity
Waterproofing protects the building’s structural elements, prolonging its lifespan. This is particularly important for hospitals and commercial buildings that are intricate and expensive to construct, and designed to serve for decades.
Improved Health and Safety
In environments like hospitals, maintaining indoor air quality is paramount. Waterproofing helps prevent mold growth, ensuring a healthier and safer environment for patients and staff.
Aesthetic Preservation
Maintaining the exterior appearance of a building is vital for its perceived value. Waterproofing helps preserve the building’s aesthetic, ensuring it remains visually appealing and professional.
Energy Efficiency
By preventing air and moisture leaks, waterproofing contributes to better insulation, leading to improved energy efficiency and reduced utility costs.
Conclusion
Exterior waterproofing is not just a maintenance task; it’s an investment in the building’s future. For facility managers, engineers, and property owners of hospitals and large commercial buildings, understanding and implementing effective waterproofing strategies is key to maintaining the building’s integrity, functionality, and aesthetic appeal. By focusing on critical areas such as surfaces, window joints, and expansion joints, you ensure a safer, healthier, and more efficient building for all occupants.
At Remediation Specialists, we are happy to offer a free walk-through and building evaluation to help you address issues or plan for ongoing preventative maintenance.
*For more information on exterior waterproofing solutions and services, contact our expert team. We specialize in providing tailored waterproofing solutions for hospitals and large commercial buildings, ensuring your property is protected and preserved.*