TWP Mildew Sealer is a professional strength, easy to apply formula protecting against mildew in the following ways:

TWP Mildew Sealer is a clear drying sealer for chronically mildew prone painted surfaces which contains a preservative to prevent mold and mildew from attacking the surface of the sealer.

When applied over existing mildew, it provides a clean mildew free surface which helps to prolong the life of the latex finish.

TWP Mildew Sealer has excellent adhesion over moderately chalky surfaces and serves as an excellent bonding primer to reduce peeling.  The finish dries clear and quickly.

This is an ideal product where mildew surface defacement and finish film service life and appearance is important.  TWP Mildew Sealer must be finish coated with a high quality 100% acrylic latex finish.

TWP Mildew Sealer is good for use on previously painted surfaces and on new wood.  Just be sure it is finish coated with a high quality 100% acrylic latex finish.

This product is not to be used with TWP Stain Products.  It is meant for painted surfaces only.

QUESTION:  I have flex trim arches on exterior windows on north side of my house. I have cleaned,primed,painted again and again.  Will TWP last for a while and will it work on flex trim.  Hope you can help...and what prep and final paint needs to be done.  Any special paint,we are using exterior latex now.  Also the mold / mildew is heavy.  Hope you can help..... Thank You,Theresa
ANSWER:  You can apply TWP Mildew Sealer to the flex trim since the material is plastic. The manufacture recommends top coating with 100% acrylic paint. As for as cleaning the flex trim, a good wash with bleach solution should remove any current mold on the surface.