Door/Window Weatherstrip Manufacturers

Strip Industry Knowledge Extension

5 key tips to extend the life of door and window weatherstrips

Door and window weatherstrips are core components that affect sound insulation, heat insulation, and dustproof performance, but they are prone to aging when exposed to temperature differences, ultraviolet rays, friction, and other environments for a long time. Through scientific installation and maintenance, their durability can be significantly improved.

Tip 1: Correctly select the material of the weatherstrip

Environmental adaptation:
EPDM rubber: resistant to high and low temperatures (-50℃~150℃), anti-ultraviolet, suitable for outdoor doors and windows.
Silicone: Food-grade and environmentally friendly, often used indoors or in humid environments (such as bathrooms).
PVC: Low cost, but easy to become brittle at low temperatures, suitable for mild climates.
Verification standard: Choose products that meet ASTM D1056 (standard for elastic porous materials) or EN 12365 (standard for building seals).

Tip 2: Accurate installation to avoid initial defects

Clean the substrate: Thoroughly remove dust and oil stains on the door and window frames before installation to ensure the fit of the adhesive.
Avoid stretching: The sealing strip should fit the gap naturally. Excessive stretching will lead to decreased resilience (it is recommended to reserve 5% length margin).
Joint treatment: Use 45° bevel splicing to reduce the gap; use special glue (such as neoprene) to fix the end.

Tip 3: Regular cleaning and lubrication

Cleaning frequency: Wipe with neutral detergent + soft cloth every quarter to avoid strong acid and alkali corrosion.
Lubrication maintenance: Apply silicone-based lubricant (such as WD-40 silicone grease) 1~2 times a year to reduce friction noise and prevent cracking.

Tip 4: Preventive inspection and repair

Common signs of aging:
Surface cracking and hardening (caused by ultraviolet rays or oxidation).
Local deformation and shedding (adhesive failure or improper installation).
Quick repair method: Small-scale damage can be temporarily sealed with Weatherstrip tape, and large-scale aging requires overall replacement.

Tip 5: Environmental optimization and protection

Shading measures: Install awnings or curtains to reduce direct sunlight (ultraviolet rays are one of the main causes of sealing strip aging).
Temperature and humidity control: In extremely dry environments, the surface can be sprayed with rubber protective agent (containing anti-mildew ingredients) regularly.

Common user QA

Q: How long does it take to replace the sealing strip?
A: Usually 3 to 5 years, but high-quality EPDM products can be used for more than 8 years if properly maintained.

Q: How to determine if the sealing strip has failed?
A: After closing the doors and windows, there is still obvious air leakage, water seepage or increased noise, or there is no elastic rebound when pressed by hand.