Sealing screw & drill holes
Screw & drill holes can rust or weather over time. They become brittle and become the cause of all kinds of moisture problems.
By sealing them immediately with WP7-201 Instant Waterproof, you will never have to worry about this again. Moreover, sealing them is extremely easy.
Step 2: Sealing screw & drill holes
Apply a thin layer of WP7-201 at a distance of 25-40 cm.
Apply a second coat after 10 minutes.