![]() ![]() Don’t leave bags of haired plaster sitting around for more than four weeks – the hair will start to rot due to the alkalinity of the lime. Old plasters are generally made with lime and sand, with animal hair added as a binder to provide extra strength and reduce shrinking and cracking.Unless your plasterer advises you otherwise, buy your plaster ready mixed by the tonne and delivered to site.For a smooth finish, apply a setting coat of one part lime to two parts fine sand, called ‘fine stuff’.The mix for the first coat, or ‘scratch coat’, should be one part lime putty to three parts sharp, well-graded sand, mixed with plenty of animal hair.Fix it to the bottom of the joists using laths and screws. This will save several thousands of pounds. If you’re on a strict budget use a reed mat instead of riven laths on the ceiling – that is, if you decide to lime plaster that too.Finest quality uses three coats, but generally two coats will suffice. ![]() You will need to apply two to three coats, depending on how flat you want the finished work.Take advantage of technical advice from lime suppliers when you order your plaster. Your lime supplier should be able to recommend a local trainer. Request a reference from a recent job. Alternatively, ask an on-site trainer to work alongside a team of plasterers who are keen to learn. Lots of plasterers will say they can do it, but most of them can’t. The price can double for lime or specialist clay coatings.Įmploy an experienced lime plasterer. ![]()
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