Plasterers Finder St. Helens Plasterer Listings page. This section lists as many Plasterers we could find in St. Helens. If you are a plasterer not listed here or you know a plasterer in St. Helens that we’ve missed, please submit a listing on our Listings Page. We list many different plasterers in St. Helens that specialize in interior and exterior plastering, decorative plastering, plaster moldings, ceiling work, screeding, coving, skimming, drylining, rendering, pebble dashing, patchwork, damp proofing and weather sealing.