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Key Features
This subfloor preparation shop drawing includes
- 20mm T&G softwood board or chipboard to BS5669
- 75mm insulation layer above the vapor control layer
- Beam and block floor per engineer's details
- 100mm dense concrete blocks
- 1200 gauge damp-proof membrane under insulation
- Ventilation openings and 150mm damp-proof course
This drawing follows a beam-and-block subfloor build, worth swapping the layer detail in ArcSite if your project uses a solid concrete slab instead.
What is Subfloor Preparation?
Subfloor preparation covers the leveling, insulation, moisture barriers, and ventilation that go into a stable, even surface before flooring installation. In ArcSite, you can mark up this drawing with your own material specs and layer detail for the project you're working on.

FAQ
Precise subfloor drawings help identify any uneven areas, necessary repairs, and material requirements. By planning correctly, you reduce installation errors, improve flooring longevity, and ensure a smoother, more efficient project.
ArcSite’s measurement and annotation tools allow you to document uneven surfaces, mark required leveling compounds, and detail specific underlayment needs. This organized approach streamlines communication with installers and helps avoid costly mistakes.
ArcSite offers a 14-day free trial, giving you the opportunity to explore and utilize its full feature set. After the trial, you can choose from various subscription packages that fit your business or project requirements.















