Please can someone tel me do  I have to use undercoat or can I just use more plaster.Im just starting out after watching a course on it but it dont tel you about that side of things.Any advise  would be a great help.
Thankyou very much for any help.
Matt
Please can someone tel me do  I have to use undercoat or can I just use more plaster.Im just starting out after watching a course on it but it dont tel you about that side of things.Any advise  would be a great help.
Thankyou very much for any help.
Matt