Plastering

15 articles

• British Gypsum Thistle Plasters: Which Product for Which Substrate, Setting Times and Mixing Ratios
  Thistle plaster products: HardWall for masonry backgrounds, Browning for absorbent substrates, MultiFinish for all backgrounds as skim, Board Finish for plasterboard, BondIt bonding agent, setting times 30–90min
• Dot and Dab Plasterboard: When to Use It and Common Mistakes
  Dot and dab plasterboard installation: dab spacing, perimeter bonding, services void, common mistakes and cold bridging risks
• Dry Lining Walls: Timber Frame, Metal Stud & Dot-and-Dab — When to Use Each
  Dry lining: timber stud at 400/600mm centres, metal stud C-section deflection head, dot-and-dab 50mm dab minimum, PIR laminate boards for insulation, 25mm services void requirement
• External Render Types: Sand & Cement, Monocouche, Silicone & Lime
  External render comparison: sand and cement, monocouche, silicone, lime render — suitability, coats, and weather resistance
• External Wall Crack Repair: Lime Mortar for Pre-1919 Buildings, Structural Injection and Movement Joints
  External wall repair and render: RICS crack categories 0–5 (>5mm = engineer), NHL 2/3.5/5 for pre-1919 buildings, epoxy injection for stable structural cracks, sand/cement only for modern buildings
• How Do You Apply Bonding Coat Plaster? Mixing, Thickness, and Common Faults
  Thistle Bonding Coat application: 12mm max coat, mixing ratios, suction control, keying, setting time management, common faults (blowing, cracking, pulling away)
• How Do You Make Good Plaster Patch Repairs That Match the Surrounding Surface?
  Blown plaster identification, bonding coat on masonry vs PVA on existing plaster, multi-coat repairs, feathering, scrim over cracks, painting over new plaster (mist coat)
• How Is Plaster Coving Installed? Step-by-Step for Gypsum and Polyurethane Coving
  Gypsum vs PU coving: adhesive types, mitre cutting techniques, corner treatment, sizes (100–150mm), fixing to artex, common sizes and profiles
• How to Skim Coat a Wall: Two-Coat Plastering Method
  Two-coat skim plastering method: browning coat, finishing coat, mixing ratios, timing, and common failure causes
• Plastering Beads: Stop Beads, Angle Beads, Arch Beads — Types & Fixing Methods
  Plastering beads: galvanised stop bead at floor/ceiling junctions, angle bead on external corners (SS in wet areas), arch bead for curved reveals, fixing with dabs and continuous mist coat, PVC-u in swimming pools only
• Sand & Cement Render: Mix Ratios, Scratch Coat Technique & Drying Times
  Sand and cement render: mix ratios by substrate (1:3 masonry to 1:6 background), scratch coat technique, drying time 7–10 days before top coat, movement joints at 3m internal and 6m external, NHL lime alternatives
• What Is a Parge Coat and When Is It Required Under Building Regulations?
  Parge coat for Approved Document F airtightness and Part E acoustic sealing: 10mm neat sand/cement over blockwork in party walls, cavity sealing at eaves
• When Should Lime Plaster Be Used and How Is It Applied?
  NHL 2/3.5/5 vs non-hydraulic lime, three-coat work for pre-1919 buildings, hair reinforcement, carbonation curing, incompatibility with gypsum, BS EN 459
• Which Plasterboard Do I Need? Standard, Moisture, Fire & Acoustic Boards
  Plasterboard selection guide: standard, moisture-resistant, fire-resistant (Type F), acoustic, and thermal boards with applications
• Which Plasterboard Provides the Best Acoustic Performance and How Is It Fixed?
  Gyproc SoundBloc vs standard board, Rw+Ctr ratings, Approved Document E targets (45dB), independent wall systems, resilient bars, flanking transmission, Robust Details