Subfloor Preparation Shop Drawing

Patrick Caldwell
May 17, 2024
5 min read


Proper subfloor preparation is essential for ensuring the longevity and performance of flooring installations. Detailed shop drawings for subfloor preparation provide the necessary guidance for creating a stable and even foundation, which is critical for any flooring project.

What is Subfloor Preparation? Subfloor preparation involves the processes and materials used to create a smooth, level, and stable surface for flooring installation. This can include steps like leveling, adding insulation, moisture barriers, and ensuring proper ventilation.

Importance of Accurate Subfloor Preparation Drawings:

  • Structural Integrity: Properly prepared subfloors ensure the structural integrity of the flooring, preventing issues like uneven surfaces and floor movement.
  • Durability: Accurate preparation helps in prolonging the lifespan of the flooring by providing a stable and supportive base.
  • Efficiency: Detailed drawings guide installers through the preparation process, reducing errors and ensuring a high-quality installation.

Overview of the Drawing: This drawing provides a comprehensive view of the subfloor preparation process, including the following components:

  • 20 mm T and G softwood boards or chipboard to BS5669
  • 75 mm Kingspan Kooltherm-VCL above insulation
  • Beam and block floor as per engineer’s details
  • 100 mm dense concrete blocks
  • 1200 gauge DPM under insulation
  • 75 mm concrete blinding layers
  • Ventilation openings with specified area
  • 150 mm DPC

Accessing the Drawing: We created this subfloor preparation shop drawing in ArcSite for you to access and use free of charge. Check back regularly for new shop drawings by bookmarking this link. Don’t miss out!

Ready to elevate your contracting business? Start your free 14-day trial of ArcSite today and experience the difference for yourself. Sign up now and get access to this drawing instantly.



Sub-floor Preparation - Shop Drawing
Subfloor Preparation Shop Drawing created in ArcSite


ArcSite is the premier mobile CAD app for contractors of all specialties. We allow you to use your finger to draw on an unlimited canvas, pulling in your products, pricing, and all calculations. From there, ArcSite generates professional proposals and accurate material takeoff lists. And that's just scratching the surface. Check out our site for more information, or book a demo to experience ArcSite for yourself!


Get ArcSite Now

Create precise and accurate drawings on the go in minutes, from anywhere on your mobile or desktop device