Insulating Above Precast Concrete Floors – Sitework

Insulation above precast concrete floors

Installation sequence – beneath screed

  1. Grout slab and lay levelling screed.
  2. Fit vertical edge insulation.
  3. Lay Ballytherm boards across the surface of the floor in broken bond.
  4. LayVCL/slip sheet over the boards with joints lapped and sealed.
  5. Pour screed.

Installation sequence – beneath sheet flooring


  1. Grout slab and lay levelling screed.
  2. Fit timber battens at thresholds and points of high loading.
  3. Lay Ballytherm boards across the surface of the floor in broken bond.
  4. LayVCL/slip sheet over the boards with joints lapped and sealed.
  5. Lay sheet flooring.

Points to watch

  • Ensure boards fit tightly together.
  • Seal service penetrations with sealant.
  • Test any services before pouring the screed.
  • Protect Ballytherm boards from traffic while laying screed or flooring.
  • Protect exposed board edges when levelling the screed.


Further Advice & Information

For more information about Ballytherm products, technical advice, or guidance on the suitability of our products for your project, contact us at + 353 (0)49 95 27000,, email us at info@ballytherm.ie or use our contact form.

Floor Insulation

Introduction

Design Guidance