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Technical product information

VLOEI Technical data sheet

Fibre-reinforced, cement-bound roof coating for additional mineral protective layers on roofs. Reaction to fire: A1 – non-combustible.

16.09.2026 · Version 1.0

Applying a grey mineral compound on a roof surface
Layer thickness
3 mm
Dry-powder consumption
≈ 5.40 kg/m²
Packaging
25 kg / bag
Coverage · calculated
≈ 4.6 m² / bag

Roof position · from top to bottom

  1. 01PV array with coordinated mounting system
  2. 02VLOEI · site-applied mineral layer
  3. 03Prepared mineral-surfaced bituminous waterproofing
  4. 04Insulation and other roof layers
  5. 05Loadbearing structure

Schematic position, not an installation drawing. Contact, supports, drainage and wind restraint are designed for the roof.

Product description

VLOEI is a one-component, polymer-modified, mineral-based dry mix. The powder is mixed with water on site and spread over the prepared substrate using a squeegee or trowel.

VLOEI is applied to prepared, mineral-surfaced bituminous roofing membranes. The roof coating is applied directly to the surface, eliminating individual board cutting. Substrate preparation, adhesion checks, uniform mixing and curing form part of the application sequence.

Technical information

PropertyValue
Product typeFibre-reinforced, polymer-modified, cement-bound dry mix
ComponentsOne-component powder, mixed with water on site
ColourGrey; shade depends on raw materials
Packaging25 kg bag
Minimum order quantity40 bags of 25 kg (1,000 kg)
Application methodSqueegee or trowel
Primary substratePrepared, mineral-surfaced bituminous membrane; suitability assessed individually
Layer thickness3 mm
Dry-powder consumption at 3 mmApprox. 5.40 kg/m²
Coverage per 25 kg bagApprox. 4.6 m² at 3 mm, without material allowance
Mixing waterApprox. 4.0 litres per 25 kg powder
Calculated fresh massApprox. 6.26 kg/m² including mixing water

Calculation at 3 mm: 5.40 kg of dry powder per m² plus 0.864 litres of mixing water gives approximately 6.26 kg of fresh mass per m². A 25 kg bag covers approximately 4.6 m² by calculation. Substrate profile, irregularities and application losses affect material demand.

Structural assessment must include the additional loads of the complete solution, including PV, mounting structure and ballast. Account for fresh mass during application.

Application

An additional mineral covering and protective layer on suitable roofs, particularly around photovoltaic installations.

Material basis

VLOEI combines cementitious binders, graded mineral aggregates and fine fillers, glass fibres, and polymer and functional additives.

Material featureFunction
Cementitious and reactive mineral bindersFormation of a solid, continuous mineral layer
Graded aggregates and mineral fine fillersDense material structure and uniform application
Glass-fibre reinforcementLimiting cracking and improving cohesion
Polymer modificationImproving adhesion and mechanical resistance
Water-repellent additivesReducing capillary water absorption
Processing aidsSupporting a homogeneous, spreadable mix

Application sequence

1. Assess the substrate and roof build-up

Check the condition, load capacity and compatibility of the existing waterproofing and the additional roof load. Remove loose material and contaminants that reduce adhesion. Determine the necessary preparation and any primer through adhesion checks.

2. Mix the material

Mix 25 kg of dry product uniformly with approximately 4.0 litres of clean water.

3. Spread the roof coating

Apply VLOEI evenly using a squeegee or trowel at a layer thickness of 3 mm. Check thickness and consumption. Junctions, outlets, penetrations and movement joints require separate detailing.

4. Allow to cure

Protect the fresh layer from adverse weather during curing.

Water exposure and mechanical behaviour

VLOEI provides supplementary surface improvement on existing bitumen. The applied roof coating fills fine surface depressions, microcracks and small gaps. The formulation targets a dense mineral structure and reduced capillary water absorption.

Reaction to fire

VLOEI is classified as a non-combustible material in class A1. This classification describes the reaction to fire of the material.

Delivery and storage

VLOEI is supplied as a dry product in 25 kg bags. The minimum order quantity is 40 bags (1,000 kg). Store the material dry, protected from moisture and in its closed original packaging.

Contact

VlamShield · Product VLOEI

info@vlamshield.nl

Contact us to coordinate your project and the required delivery quantity.

Readable offline. Refer to vlamshield.nl for the current version. vlamshield.nl

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