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Materials for waterproofing membrane manufacturerssales@merilywaterproofing.com
For bituminous membrane manufacturers

Choose 100 or 150 μm HDPE Facing with Both Material Yield and Performance in View

Compare the film quantity and the grade-specific requirement separately. A 100 μm HDPE film and a 150 μm film have different theoretical area per kilogram, but the thickness calculation alone cannot choose the suitable facing for your membrane.

Merily Waterproofing · Material Buying Guide
HDPE film-processing reference. Evaluate area yield and grade-specific performance separately.
HDPE film-processing reference. Evaluate area yield and grade-specific performance separately. · Select to enlarge

Use the intended construction as the first filter

Identify the SBS or self-adhesive membrane construction and the role of the facing. State the required properties and process conditions for the selected grade. If replacing another construction, identify the existing reference explicitly.

Merily lists 100/150 μm as common HDPE facing gauges. Other listed options include 50 μm and 65–250 μm, but the 50 μm wrapping discussion is a different duty. Do not turn the available range into a universal suitability claim.

Compare theoretical film area

Using the approved PE/HDPE material reference, theoretical area per kilogram is 1080 divided by thickness in micrometres. At 100 μm this is 10.8 m²/kg; at 150 μm it is 7.2 m²/kg.

For an illustrative 150 kg net-film roll, the corresponding areas are 1620 m² and 1080 m². These figures exclude core and packaging and are planning calculations, not measured shipment results or mechanical specifications.

Film-only quantity examples

On a phone, swipe the table sideways to see every column.

GaugeTheoretical area/kgIllustrative 150 kg net-film roll
100 μm10.8 m²/kg1620 m²
150 μm7.2 m²/kg1080 m²
LengthArea divided by width in metresUse actual quoted width
ScopeMaterial planning onlyCore and packing additional
HDPE film on processing equipment from the approved product archive.
HDPE film on processing equipment from the approved product archive. · Select to enlarge

Use width for the length calculation

At 1000 mm width, the same example areas correspond to 1620 m and 1080 m of linear length. At 960 mm, the lengths are approximately 1688 m and 1125 m. State the actual gauge, width and net-film mass with any example.

A roll-weight reference without width and gauge does not define a fixed length. Confirm the quoted supply configuration rather than treating a familiar 150 kg figure as a complete roll specification.

Keep the final decision tied to the grade

Compare the applicable mechanical and process requirements alongside the quantity estimate. Do not transfer cross-laminated film data to ordinary HDPE facing. Similar material yield does not establish equal performance.

Send Merily the membrane duty, gauge, width, required properties and roll format. Add quantity and destination for a quotation that connects the material choice to a practical supply arrangement.

Questions for This Purchase

Does 150 μm automatically meet every requirement better?

Select the grade required by the actual membrane and process; do not choose only from thickness or weight.

Does 150 kg tell me a fixed roll length?

No. Include gauge, width and the net-film weight basis.

Can the same area formula prove strength equivalence?

No. Quantity calculations and mechanical performance are different comparisons.

For membrane manufacturers

Send your specification.
Get a clear material quote.

Tell us what you produce, the material you need and your required roll format. Include the quantity and destination port so we can prepare the product and packing details together.

Useful details: thickness or basis weight, width, roll length or weight, core, quantity and application. For release film, add coated side and release requirements.

sales@merilywaterproofing.com

Standard production: approximately 10 days for one 40-ft container order. Customized specifications: approximately 10–15 days. Confirm the schedule with the final order.

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