Underlayment Calculator
Enter your floor area and underlay type to estimate underlay rolls, the 200-micron DPM moisture barrier you'll need over concrete, and the total cost — for any floating wood, laminate or SPC floor. Indicative India 2026; always confirm coverage with your vendor.
Your floor
Denser, quieter, better cushioning for SPC/laminate. Roll coverage and ₹ rates are indicative (material only, +18% GST extra, fitting not included) — confirm with your vendor.
Underlay you'll need
0 roll
IXPE 3mm · covering 194 sq ft (incl. 8% wastage)
₹0
estimated underlay + DPM material cost
Area to cover
194 sq ft
180 sq ft floor
Underlay rolls
1 × 200 sf
DPM (200 micron)
194 sq ft
1 roll
Total cost
₹4,082
material only
Cost by underlay type for your area (DPM added where the type needs one). Indicative — verify with vendor.
Get the floor build-up right, top to slab
Let DesignAI check your underlay, DPM and floating-floor layer against your subfloor and climate.
Go deeper
Disclaimer: results are indicative estimates for India in 2026 (material only; +18% GST and fitting labour extra). Underlay roll sizes, ₹/sq ft rates and DPM requirements vary by brand, city and vendor. A 200-micron polyethylene DPM is generally recommended over concrete or in humid/coastal zones to prevent cupping of wood and laminate; foil-backed "combo" underlays include this layer. Always confirm coverage and moisture suitability with your supplier and installer before ordering.
Related Guides — Deep-dive reading
Flooring Underlayment & Moisture Barrier Guide for India (Floating Floors)
Why underlay and a damp-proof membrane make or break laminate, SPC and engineered floors over Indian concrete — types, the 200-micron PE DPM, when you can skip it, and how to lay it.
Flooring & SurfacesWooden Floor Installation in India: Nail-Down, Glue-Down & Floating Methods
How solid and engineered wood floors are actually laid in Indian homes — acclimatising planks, moisture barriers, the three fixing methods, expansion gaps and labour rates that decide whether your floor stays flat or cups.
Flooring & SurfacesFlooring for Humid Conditions in India: Best Floors for Ground Floors, Basements and Chronically Damp Rooms
Why moisture, rising damp and condensation wreck the wrong floor — and how to pick moisture-stable flooring, lay a 200-micron damp-proof membrane, run the moisture test before laying, and keep humid Indian rooms dry.
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