Quartz flour type W12
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W12 quartz powder with a grain size of 1-120 µm used as a filler for epoxy and polyester resins .
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Epoxy primer/impregnant - HP Primer W221
HP Primer W221 is a highly durable, water-based, two-component epoxy with excellent adhesion to various difficult surfaces. It can be applied to concrete, asphalt, as well as difficult-to-coat, smooth surfaces such as ceramic tiles and self-leveling screeds.
The highly durable HP Primer W221 primer is designed for use as an epoxy varnish for colorless floor finishing or as a primer for the highly durable ProFloor Plus epoxy floor.
Highly durable HP Primer W221 epoxy primer/impregnating agent – key properties:
- durable, two-component epoxy (2K)
- excellent adhesion to various surfaces, including difficult ones, such as many self-leveling screeds
- used as a primer, it acts as an adhesive barrier between old and new coatings
- when used as a varnish, it protects against dust, dirt, water, oil, and solvents
- can be used under surfaces intended for heavy mechanical traffic
- water-soluble - has a weak odor during application
- ideal for use in areas where solvents cannot be used
- can also be applied to walls
- provides a satin finish
Coverage: 7-10 m²/kg (7 m²/kg for a dry layer thickness of 52 µm)
More information about HP Primer W221 epoxy primer/impregnating agent.
Note:
Grey colour is available only in 5 kg packs.
HP Primer has undergone independent laboratory verification. This confirms its full compliance with the requirements of BREEAM UK New Construction 2025 certification in the key category Hea 04 – Indoor air quality (VOC emissions). The product also meets the most stringent criteria for the exemplary level.
Key properties:
Product characteristics
- two-component,
durable epoxy (2K), - ideal for areas
where solvents cannot be used
Resistance
- can be used under topcoats
designed for heavy mechanical traffic
Aesthetics
- available in a transparent version
and in grey, - provides an aesthetic
satin finish
Application and safety
- has excellent adhesion to difficult substrates
of many anhydrite and cement self-levelling compounds, - is water-dilutable,
with a low odour during application, - safe for people and the environment,
has a low VOC content, making it safe for people and the environment, - for best results, we recommend
using a nylon roller for epoxy paints - 14 mm, - Confirmed compliance with BREEAM
(Indoor air quality),
HP Primer has undergone independent laboratory verification. This confirms its full compliance with the requirements of BREEAM UK New Construction 2025 certification in the key category Hea 04 – Indoor air quality (VOC emissions). The product also meets the most stringent criteria for the exemplary level
General recommendations for the specification of self-levelling screeds
A self-levelling screed under resin substrates should have a minimum compressive strength of 25 MPa (C25). The screed should not contain additives that hinder adhesion, e.g. latex. Another parameter that helps with assessment is the pull-off strength of the substrate, which should be at least 1.5 MPa.
Below we list compounds to which primer adhesion has been confirmed in tests and in practice.
HP Primer can be applied on self-levelling screeds:
- cement-based:
- Uzin: NC 150, NC 170 LevelStar NEW, NC 172 BiTurbo, NC 196 NEW
- Bostik: Cempolay Ultra Strong
- Flowcrete: Industrial Top
- F-Ball: Stopgap 800 Wearcoat
- Sika®: SikaScreed® HardTop-60
- anhydrite-based:
- Knauf: FE50
- Uzin: NC 110, NC 115, NC 118, NC 112
HP Primer should NOT be used on self-levelling screeds:
- cement-based:
- Bostik: Cempolay Self Levelling, Cempolatex
- Mapei: Ultraplan series
- Sika®: mortars with SikaLatex® additive
- anhydrite screeds:
- Atlas: SAM 100, SAM 200, SAM 500, SWS 201
Instructional videos:
Resin epoxy flooring in a hall or warehouse – How to apply it?
Resin on self-levelling mineral screeds
Documentation:
Data sheets
- Technical Data Sheet - detailed product properties and application method
- Safety Data Sheet - base - chemical, health and safety, and transport information
- Safety Data Sheet - hardener - chemical, health and safety, and transport information
Certificates
- Confirmed compliance with BREEAM - Indoor air quality - HP Primer has undergone independent laboratory verification. This confirms its full compliance with the requirements of BREEAM UK New Construction 2025 certification in the key category Hea 04 – Indoor air quality (VOC emissions). The product also meets the most stringent criteria for the exemplary level.
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