---
title: How to apply Sunprimer HWP
description: Sunprimer HWP is a water-based primer which limits the effects of UV light and which can be used as an optional primer when applying a finishing coat of Hybrid Wood Protector on vertical exterior wood
---
[Skip to content](https://service.rubiomonocoat.com/how-to-apply-sunprimer-hwp#main-content)
- [English](https://service.rubiomonocoat.com/how-to-apply-sunprimer-hwp)
- [Deutsch](https://service.rubiomonocoat.com/de/wie-wird-sunprimer-hwp-aufgetragen)
- [Español](https://service.rubiomonocoat.com/es/cómo-aplicar-sunprimer-hwp)
- [Français](https://service.rubiomonocoat.com/fr/comment-appliquer-sunprimer-hwp)
- [Nederlands](https://service.rubiomonocoat.com/nl/hoe-sunprimer-hwp-aanbrengen)
English
Show submenu for translations
[Contact us](https://service.rubiomonocoat.com/kb-tickets/new?hsLang=en)
Open main navigation
Close main navigation
- - [English](https://service.rubiomonocoat.com/how-to-apply-sunprimer-hwp)
- [Deutsch](https://service.rubiomonocoat.com/de/wie-wird-sunprimer-hwp-aufgetragen)
- [Español](https://service.rubiomonocoat.com/es/cómo-aplicar-sunprimer-hwp)
- [Français](https://service.rubiomonocoat.com/fr/comment-appliquer-sunprimer-hwp)
- [Nederlands](https://service.rubiomonocoat.com/nl/hoe-sunprimer-hwp-aanbrengen)
English
Show submenu for translations
- [Contact us](https://service.rubiomonocoat.com/kb-tickets/new)
- [Go to rubiomonocoat.com](https://www.rubiomonocoat.com/)
[Go to rubiomonocoat.com](https://www.rubiomonocoat.com/)
How can we help you?
- There are no suggestions because the search field is empty.
1. [Rubio Monocoat | Knowledge Center](https://service.rubiomonocoat.com/?hsLang=en)
2. [Exterior (FAQ's)](https://service.rubiomonocoat.com/exterior-faqs?hsLang=en)
3. [Pretreatment](https://service.rubiomonocoat.com/exterior-faqs?hsLang=en#pretreatment)
# How to apply Sunprimer HWP
[Sunprimer HWP](https://service.rubiomonocoat.com/sunprimer-hwp?hsLang=en) is a water-based primer which limits the effects of UV light and which can be used as an optional primer when applying a finishing coat of [Hybrid Wood Protector](https://service.rubiomonocoat.com/hybrid-wood-protector?hsLang=en) on vertical exterior wood.
Sunprimer HWP - which is always applied in the same colour as the Hybrid Wood Protector - guarantees the deep penetration of colour pigments which results in an intense colour.
### Instructions
- Step 1: Remove all residues of old applications (if necessary)
- Step 2: Clean the surface with Exterior Wood Cleaner and let it dry
- Step 3: Apply Sunprimer HWP
- Step 4: Leave to dry for 24 hours
- Step 5: Apply Hybrid Wood Protector
- Step 6: Leave to react for about 10 minutes and smooth the surface again
- Step 7: Let it dry for 24 hours
#### Step 1: Remove all residues of old applications (if necessary)
- Remove all residues of old applications by sanding the surface scratch-free (end with a screening net 80 or 120). With new wood it is sufficient to just clean the surface with Exterior Wood Cleaner (see next step).
#### Step 2: Clean the surface with Exterior Wood Cleaner and let it dry
- Dampen the surface with clear water. Use a garden hose.
- Apply some [Exterior Wood Cleaner](https://service.rubiomonocoat.com/exterior-wood-cleaner?hsLang=en).
- *Tip: use gloves when using this product. Also be careful that the product doesn't get in the eyes.*
- Scrub the treated area with a nylon scrubbing brush in the lengthwise direction of the wood. This will cause the product to foam.
- Rinse thoroughly with clear water until all the foam has disappeared.
- Allow the surface to dry thoroughly (until there appears to be uniform drying and it is dry to the touch).
#### Step 3: Apply Sunprimer HWP
- Stir the Sunprimer HWP well.
- Apply a small amount uniformly using a gun, [brush](https://service.rubiomonocoat.com/standard-brush-60?hsLang=en) or roller. Work in zones of 5-10 m².
#### Step 4: Allow to dry for 24 hours
- Leave to dry for approximately 24 hours.
- The surface should be dry to the touch.
#### Step 5: Apply Hybrid Wood Protector
- Stir the oil thoroughly before use.
- Add 10% [Accelerator](https://service.rubiomonocoat.com/accelerator-b-component?hsLang=en) to the oil and mix well (measure the quantity precisely!)
Attention, the mixture of A and B can only be used during 4-6 hours. So be careful and only mix the amount you'll need in that timeframe.
- Apply a layer of [Hybrid Wood Protector](https://service.rubiomonocoat.com/hybrid-wood-protector?hsLang=en) with a flat paint brush (e.g. [Brush Standard 60](https://service.rubiomonocoat.com/standard-brush-60?hsLang=en)).
#### Step 6: Leave to react
- Leave to react for 10 minutes and then smooth the surface again with the same brush (without applying new product).
#### Step 7: Let dry for 24 hours
- Let dry for about 24 hours. Complete curing takes place after 7 days.
**Cloths and other tools that are soaked in oil may spontaneously combust and must therefore be submerged in water after use.**
> \- To determine the correct colour, always do a small test first with one of our 20 ml sample bottles on identical sanded and prepared wood.
>
> \- Good preparation is crucial for good protection. Always prepare the wood with Exterior Wood Cleaner, even though the wood is new.
>
> \- Stir the product well before application. When using several containers at one site, it is recommended to mix them for an even result.
>
> \- Never apply in direct sunlight and at temperatures under 10°C (temperature must stay above 10°C at least until 12 hours after application). Only work when weather conditions are dry.
>
> \- Only use our maintenance and cleaning products.
- [Products](https://service.rubiomonocoat.com/products?hsLang=en#main-content)
- [Interior](https://service.rubiomonocoat.com/products?hsLang=en#interior)
- [Exterior](https://service.rubiomonocoat.com/products?hsLang=en#exterior)
- [Tools](https://service.rubiomonocoat.com/products?hsLang=en#tools)
- [Sets](https://service.rubiomonocoat.com/products?hsLang=en#sets)
- [Interior (FAQ's)](https://service.rubiomonocoat.com/interior-faqs?hsLang=en#main-content)
- [Preparation](https://service.rubiomonocoat.com/interior-faqs?hsLang=en#preparation)
- [Pretreatment](https://service.rubiomonocoat.com/interior-faqs?hsLang=en#pretreatment)
- [Protection](https://service.rubiomonocoat.com/interior-faqs?hsLang=en#protection)
- [Maintenance and cleaning](https://service.rubiomonocoat.com/interior-faqs?hsLang=en#maintenance-and-cleaning)
- [After-treatment](https://service.rubiomonocoat.com/interior-faqs?hsLang=en#after-treatment)
- [FAQ](https://service.rubiomonocoat.com/interior-faqs?hsLang=en#faq)
- [Exterior (FAQ's)](https://service.rubiomonocoat.com/exterior-faqs?hsLang=en#main-content)
- [Pretreatment](https://service.rubiomonocoat.com/exterior-faqs?hsLang=en#pretreatment)
- [Protection](https://service.rubiomonocoat.com/exterior-faqs?hsLang=en#protection)
- [Maintenance and cleaning](https://service.rubiomonocoat.com/exterior-faqs?hsLang=en#maintenance-and-cleaning)
- [FAQ](https://service.rubiomonocoat.com/exterior-faqs?hsLang=en#faq)
- [Technical Data Sheet (See latest version on DAM)](https://service.rubiomonocoat.com/technical-data-sheet-see-latest-version-on-dam?hsLang=en)
- [Certificates](https://service.rubiomonocoat.com/certificates?hsLang=en#main-content)
- [Overview](https://service.rubiomonocoat.com/certificates?hsLang=en#overview)
- [Certificates](https://service.rubiomonocoat.com/certificates?hsLang=en#certificates)
- [Colours](https://service.rubiomonocoat.com/colours?hsLang=en)
- [Brochures](https://service.rubiomonocoat.com/brochures?hsLang=en#main-content)
- [Reference books](https://service.rubiomonocoat.com/brochures?hsLang=en#reference-books)
- [General](https://service.rubiomonocoat.com/brochures?hsLang=en#general)
- [Product (Hero brochures)](https://service.rubiomonocoat.com/brochures?hsLang=en#product-hero-brochures)
- [Colour cards](https://service.rubiomonocoat.com/brochures?hsLang=en#colour-cards)
- [Marketing Price list](https://service.rubiomonocoat.com/brochures?hsLang=en#marketing-price-list)
- [Videos](https://service.rubiomonocoat.com/videos?hsLang=en#main-content)
- [Rubio Monocoat YouTube channel](https://service.rubiomonocoat.com/videos?hsLang=en#rubio-monocoat-youtube-channel)
- [How to - Interior Protection](https://service.rubiomonocoat.com/videos?hsLang=en#how-to-interior-protection)
- [How to - Exterior Protection](https://service.rubiomonocoat.com/videos?hsLang=en#how-to-exterior-protection)
- [How to - Pre-treatments](https://service.rubiomonocoat.com/videos?hsLang=en#how-to-pre-treatments)
- [How to - Interior Cleaning](https://service.rubiomonocoat.com/videos?hsLang=en#how-to-interior-cleaning)
- [Reference photos](https://service.rubiomonocoat.com/reference-photos?hsLang=en#main-content)
- [DuroGrit](https://service.rubiomonocoat.com/reference-photos?hsLang=en#durogrit)
- [Oil Plus 2C](https://service.rubiomonocoat.com/reference-photos?hsLang=en#oil-plus-2c)
- [WoodCream](https://service.rubiomonocoat.com/reference-photos?hsLang=en#woodcream)
- [Industrial](https://service.rubiomonocoat.com/reference-photos?hsLang=en#industrial)
- [Precolor Easy](https://service.rubiomonocoat.com/reference-photos?hsLang=en#precolor-easy)
- [Hybrid Wood Protector](https://service.rubiomonocoat.com/reference-photos?hsLang=en#hybrid-wood-protector)
- [FR Oil System](https://service.rubiomonocoat.com/reference-photos?hsLang=en#fr-oil-system)
- [Submit your project!](https://service.rubiomonocoat.com/submit-your-project?hsLang=en)
- [Product Images](https://service.rubiomonocoat.com/product-images?hsLang=en#main-content)
- [Interior](https://service.rubiomonocoat.com/product-images?hsLang=en#interior)
- [Exterior](https://service.rubiomonocoat.com/product-images?hsLang=en#exterior)
- [Tools](https://service.rubiomonocoat.com/product-images?hsLang=en#tools)
- [Our brand](https://service.rubiomonocoat.com/our-brand?hsLang=en#main-content)
- [Fairs](https://service.rubiomonocoat.com/our-brand?hsLang=en#fairs)
- [Branding elements](https://service.rubiomonocoat.com/our-brand?hsLang=en#branding-elements)
- [Ecology](https://service.rubiomonocoat.com/our-brand?hsLang=en#ecology)
- [Terms & conditions](https://service.rubiomonocoat.com/our-brand?hsLang=en#terms-conditions)
- [MSDS](https://service.rubiomonocoat.com/msds?hsLang=en)
[](https://www.rubiomonocoat.com)
[service@rubiomonocoat.com](mailto:service@rubiomonocoat.com)
[Go to the DAM (digital library of assets)](https://publicassets.rubiomonocoat.com/dam/)
Copyright © 2025, Rubio Monocoat