These sealants tend to be inexpensive and easy to apply, and they’re easy to work into cracks and small gaps. Silicone sealants are expensive, but that’s for good reason: they’re very ...

However, only two types of sealants yield the best results: polyurethane-based sealants and silicone-based sealants. The former is the industry standard for windshield installation and repairs ...

Arlington A: Chlorine bleach removes mildew stains. When the stains are on silicone sealant, one trick is to place wads of toilet tissue against the stained areas and then dampen them with bleach.