Since the beginning of summer, orange/red heat warnings have been issued consecutively in many areas across North China, East China, South China, and Central China. Surface temperatures in many places have exceeded 40°C. Outdoor sunrooms are subjected to intense sunlight and harsh conditions.<#>4#<#>Glass deformation, cracked sealants, and water leakage during rainy days have become common problems for thousands of homeowners.<#>6#<#>These issues plague many property owners alike.<#>8#<#>

To ensure a comfortable summer in your sunroom, choosing the right sealant is crucial, Genesis C-668 Multi-Purpose Weatherproof Sealant<#>16#><#>Developed for extreme high-temperature environments. Addresses all sealing challenges in high-temperature sunrooms, from raw materials to performance!<#>18#><#>

This summer, extreme heat affected more than 20 provinces and cities across the country. In Henan, Shandong, Jiangsu, Zhejiang, Guangdong, and Guangxi, temperatures exceeded 38°C for several consecutive days. In outdoor areas and on rooftops, temperatures even reached 55°C or higher.<#>4#<#>

Prolonged extreme heat causes a series of lifestyle disruptions:

✅ Accelerated aging of outdoor building materials:<#>8#>

Aluminum alloy profiles and tempered glass experience significant thermal expansion when exposed to intense sunlight. The differences in thermal expansion and contraction coefficients between different materials increase, causing repeated deformation at the joints due to stretching forces.

✅ Rising costs of living at home: <#>8#

The enclosed greenhouse effect in a sunroom is extremely strong, with indoor temperatures easily exceeding 50°C. As a result, green plants wither from excessive sunlight, while furniture deteriorates and warps due to the heat.<#>4#>

✅ High maintenance costs later on:<#>8#>

High temperatures accelerate the aging and deterioration of ordinary sealants, leading to frequent leaks. Repeated repairs, as well as the costs associated with replacing glass and applying new sealant, remain high. As a result, many homeowners have to spend money each summer to repair their sunrooms. <#>4#>

Sunrooms are constructed using large sheets of tempered glass and aluminum profiles to create a structure that exposes it directly to ultraviolet rays and high temperatures. The sealing system is the first to suffer damage in such conditions. In 90% of cases, leaks are caused by problems with the sealant:

<#>5#>1. Softening due to high temperature, delamination, and cracking:<#>6#><#>7#><#>8#>

Inexpensive, general-purpose glues available on the market cannot withstand large temperature differences. After exposure to sunlight, the glue quickly softens, shrinks, hardens, and cracks, resulting in gaps between the glass and the profiles.<#>4#>

<#>5#<#>2. Sudden changes in temperature cause cracks in the glue joints:<#>8#<#>

During the day, high temperatures and sunlight cause the materials to expand. In the evening, rainfall and sudden cooling lead to contraction. This results in deformation and misalignment of glass and aluminum components. Inferior adhesives lack elasticity and cannot accommodate these changes, leading to frequent cracks in the joints. On rainy days, water seeps into the interior through these cracks, turning the sunroom into a “water cave” in seconds.<#>4#>

<#>5#<#>3. Ultraviolet rays accelerate aging:<#>8#<#>

Prolonged exposure to strong ultraviolet rays causes ordinary sealants to yellow and become brittle within 1-3 years. In the hot and humid environments of the south, sealant cracks turn black and moldy, releasing unpleasant odors that contaminate the window frames and walls.<#>4#>

With years of research and development in sealant technology, C-668 is a versatile, weather-resistant sealant designed for applications across a wide temperature range. It features high elasticity, excellent resistance to deformation, and compatibility with various substrates. This sealant effectively addresses the challenges associated with sealing in high-temperature greenhouses, providing long-term protection for these structures. <#>8#>

✅ Wide temperature tolerance range: <#>8#

The product can withstand extreme temperatures. Even under intense sunlight on the roof, the adhesive does not soften, flow, shrink, or harden. Its performance remains stable despite drastic day-night temperature fluctuations, effectively preventing adhesive failure due to high temperatures from the outset.<#>8#>

✅ High elasticity and resistance to displacement:<#>8#

Excellent elastic recovery performance: it can expand and contract freely with the thermal expansion and contraction of glass and aluminum profiles, thereby compensating for the deformation forces caused by different materials. The adhesive joint remains crack-free over time.<#>4#>

✅ UV-resistant and aging-resistant:<#>8#

With UV and ozone-resistant formula, it can withstand intense summer sunlight. It remains durable even with long-term outdoor use, preventing yellowing, whitening, or mold formation. It’s also resistant to moisture and water damage in hot, rainy regions of the south. The seams are clean, durable, and long-lasting<#>8#>.

✅ Universal bonding for multiple materials:<#>8#>

Suitable for aluminum single-panel exterior walls, high-end doors and windows . Perfect for both new home installations and old home repairs in one go – truly versatile. <#>8#>

✅ Environmentally friendly with low odor:<#>8#>

Free from formaldehyde and low in VOCs. No pungent odors after curing. Does not release harmful gases in a sealed, high-temperature environment like a sunroom. Ideal for a healthier tea-drinking and gardening experience at home.<#>4#>

Construction in high-temperature summer conditions differs from normal temperatures. Avoid air bubbles, delamination, and rework . Remember these 4 key practical points: <#>8#