1) What is used to strengthen joints in plaster boards before skimming a) Masking tape b) Sellotape c) Scrim tape d) Electrical tape 2) What colour board is fire board a) Blue b) Pink c) Green d) Grey 3) Which undercoat plaster is cement-based a) Bonding coat b) Hardwall c) Dry coat d) Bonding 60

plaster knowledge

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