Exterior siding and trim:
Choose a hybrid or polyurethane
On your home’s exterior, high-quality caulk is critical—it locks out water, protecting your home against rot and peeling paint. Although some inexpensive acrylic latex caulks are rated for exterior use, we recommend hybrid caulks because they offer better adhesion and flexibility. For matching the appearance of materials like stucco or rough-sawn wood, we like Vulkem, a textured polyurethane.