Is There A treatment to Stop Knots?

Knots bleed through paint. It's frustrating and leaves an unattractive finish. It occurs when resins seep to the surface and cause discolouration. Stopping this resin can be very challenging. Blocking primers such as Multistop for interior wood or Pinja Flex Isolator for exterior can and do help, but heat sealing can provide a more effective solution:

1. Scrape away excess resin.
2. Heat knots with a heat gun and again scrape away excess resin.
3. Once complete, wash down all oily surfaces with cellulose thinner, then rinse with clean water.
4. Allow timber to settle

Once complete, prime with Ultra Primer.

Topcoat options include:

1. Ultra Matt
2. Ultra Classic
3. Valtti Opaque

If you require more advice on painting over knots, give our technical team a call on 0131 334 4999 or send a message to our technical team.