Loctite 2 in 1 Seal & Bond Rain Guard - Washout Resistant Exterior Sealant

Loctite 2 in 1 Seal & Bond Rain Guard is formulated for exterior window and door sealing projects. The Seal & Bond technology adds increased durability for a long, lasting waterproof seal. Loctite 2 in 1 Seal & Bond Rain Guard withstands extreme weather conditions by offering immediate rain and washout resistance. 2 in 1 Rain guard is an acrylic based formulation with superior adhesion, flexibility and durability. It cures to a high gloss sheen creating a water and wind tight seal which is paintable as well as mold and mildew resistant.

Key Facts

Recommended on

  • Vinyl and fiber cement siding
  • Brick and concrete
  • Windows and doors
  • Wood, hardboard, pressboard, particleboard, OSB


  • Contains exclusive Rain Guard technology, resistant to rain and washout
  • Permanently flexible and durable
  • Long lasting, professional finish
  • Mold & mildew resistant, Inhibits mold & mildew growth
  • Uncured adhesive cleans up easily with soap and water
  • Water-resistant
  • Ideal for humid or steamy areas
  • Paintable and durable
  • Long lasting, professional finish
  • Water-based adhesive
  • Low odor, non-toxic, non-flammable

Step by step


Step 1: Safety Precautions

Apply and cure in a well-ventilated area. Wear gloves and wash hands after use.

Step 2: Preparation

Apply sealant between 5°C and 38°C. Surfaces must be clean, dry and free of old caulk, grease, dust and other contaminants. Remove mold or mildew using bleach and detergent that does not contain ammonia. Rinse surface and allow to dry. For neat bead lines, mask both sides of the joint. Cut the tip off the cartridge or squeeze tube at a 45° angle to desired bead size minimum of 3 mm.

Step 3: Application

Using caulking gun, apply sealant with steady pressure, forcing the sealant into the joint. Smooth bead immediately with a wet finger or a tool. Remove masking tape immediately after tooling and wipe excess off of hands and tools. Allow at least 24 hours before painting. Cure time is dependent upon temperature, humidity and depth of sealant used. High humidity and low temperatures will lengthen cure time.

Step 4: Cleanup

Clean tools and uncured product residue immediately with warm, soapy water. Cured sealant may be carefully cut away with a sharp-edged tool.