http://go.askthebuilder.com/NewsletterSignupNow Tim Carter demonstrates how to prevent bubbles under wallpaper. The water in the glue or paste activator causes the paper to swell. The paper must relax or expand while it is still on the cutting table.
Discover more information on askthebuilder.com on wallpapering:
Sign up NOW for Tim's FREE weekly newsletter at: http://go.askthebuilder.com/NewsletterSignupNow