What Can Be Done To Avoid Nodules?
The best methods to avoid nodules are nothing new: prepare the surface properly to insure a good bond, use the correct amount of each component of the plaster, mix and apply it correctly, and allow it to hydrate and cure normally. The critical failures include: • weak bonds between the plaster and the subsurface (which explains why nodules are more prevalent in replaster work) • Over-accelerated drying, resulting in excessive cracking of the plaster, allowing the pool plaster to become too dry • The pool not being filled with water for extended periods or hot periods • Ground shifting • Too slow of filling in a new plaster pool, resulting in shrinkage spike holes or other such “artificially created” cavities Surface preparation and compatibility of new coatings to existing surfaces is crucial to many other applications besides pool plaster. Anyone who has spent hours or days removing old varnish from furniture or old paint from the eaves of your house prior to repainting is familiar wi
