Preparing a pool for plaster involves specific procedures to ensure the new surface bonds correctly and lasts. A key part of this preparation includes a technique called undercutting specific areas after the pool's hydrostatic pressure has been managed.
Essential Pool Plaster Preparation Steps
Getting a pool ready for a new plaster finish is a detailed process. One important step, following the removal of hydrostatic pressure from under the pool shell, is undercutting.
Understanding Undercutting for Pool Plaster
Based on standard practice in pool renovation, undercutting is performed once the hydrostatic pressure has been successfully addressed. This technique involves cutting a small groove or channel around certain features embedded in the pool structure.
What Needs to Be Undercut?
According to the provided information, undercutting should be done on:
- All waterline tiles: Specifically, the bottom edge where the tiles meet the pool wall.
- Any pool fittings and features: This includes various functional and aesthetic components integrated into the pool shell.
- Pool lights
- Return lines (jets)
- Skimmer mouths
- Main drain covers
The Importance of Undercutting
The primary purpose of performing this undercutting step is functional for the plastering process. As stated in the reference, undercutting "allows us to work in the plaster once we begin."
This creates a necessary space or edge that helps:
- Ensure a clean transition for the new plaster layer around existing features.
- Provide a point for the new plaster to neatly terminate or integrate, contributing to a smooth and professional finish.
By carefully undercutting these areas, pool professionals help create the proper conditions for applying the new plaster smoothly and effectively around all edges and fittings.
