New Installation Guide Page

Liner Swimming Pools Installation Guide for Pool Renovations & Liner Replacements


Material thicknesses for So-Soft insulation and liner Method


Swimming pool liner is laid directly onto Thermapool insulation. So-Soft is only advisable for domestic pools using pre tailored liners. So-Soft gives the swimming pool a softer carpet feel, but you may be able to see joints between the insulation or where the fixings are.


  • 75mm Thermapool Insulation Board.
  • 0.75mm Bag liner


Total thickness - 75.75mm

Material thicknesses for insulation, render and liner finish  

This gives the insulation a solid uniformed hard finish recommended for commercial, schools or for on-site lined swimming pools, or where clients would simply prefer the harder surface, with no visible joints.


  • 75mm Thermapool Insulation Board.
  • 4.5mm Thermapool Render and mesh.
  • 0.75mm Bag liner
  •  1.5mm On site Lining


Total Bag Liner thickness - 80.25mm

Total On site Liner thickness - 81mm




Recommended number of fixings  

 4 fixings per wedge  

8 fixings perinsulation sheet                                                                      

Fixings should be installed at 60mm in from

the edges and spaced evenly, more fixings maybe required if the boards does not sit flat onto the pool structure.