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- Available in grey.
- Designed for stabilising loose particles on brittle or weathered roofs, floors, and walls.
- For porous mineral substrates.
- Flexible, withstands temperature changes, offers quick water resistance.
- Professional use only.
- VOC compliant.
Description
Rust-Oleum Mathys Primer 44 HS - Flexible Adhesion Promoting Primer
Primer 44 HS is a ready-to-use binding Primer based on chlorinated rubber. It is designed to improve the adhesion of coatings on porous mineral surfaces, such as unpainted and weathered roofs, floors, and walls. This Primer provides excellent fixation by stabilising loose particles, ensuring that the substrate does not absorb expensive coatings.
Features
- Immediate water resistance: Primer 44 HS becomes water-resistant within an hour of application at 20°C, making it ideal for quick projects.
- Flexible and durable: The Primer can withstand temperature variations, making it suitable for outdoor and indoor applications.
- Environmental compliance: With a VOC level of 599 g/l, Primer 44HS meets stringent environmental safety standards.
- Long shelf life: When stored in dry, well-ventilated areas away from direct sunlight, Primer 44HS has a minimum shelf life of 2 years.
Application Instructions
Before application, ensure the substrate is clean and free of grease. If the substrate is coated with acrylic paint, do not use Primer 44HS as the solvents may affect the paint. Instead, use Mathys Pegafix. Stir the Primer thoroughly before use and apply with a brush, roller, or spray without diluting. For best results, apply in a dry and well-ventilated area with temperatures above 5°C and relative humidity below 80%.
Restrictions
- Do not use on acrylic paint as the solvents in Primer 44HS can affect the acrylic coating.
- Avoid application in conditions with high humidity or temperatures below 5°C.
- Professional and industrial applications only.
Complementary Products
For projects involving acrylic paint, consider using Pegafix as an alternative Primer. Always refer to the downloadable data sheet for detailed product information and application guidelines.
Health and Safety
- UN Number: 1263
Primer 44HS contains hydrocarbons, aromatic C9, and toluene, which are classified as hazardous. It is flammable, may cause respiratory irritation, and is toxic to aquatic life with long-lasting effects. Always handle with proper protective equipment and refer to the Safety Data Sheet for detailed safety instructions.
Product Details
558-182129
Data sheet
- For Use By
- Professional Use
- Interior / Exterior Use
- Exterior Use
- Application
- Brush, Roller, Spray
- Dry to Handle (at 20°C)
- 1 Hour
- Dry to Recoat (at 20°C)
- 24 Hours
- Fully Cured (at 20°C)
- 24 Hours
- Coverage
- 14m² per litre
- Min. Application Temperature
- 5°C
- Solids by Volume
- 32 %
- VOC
- 599 g/l
- Shelf Life (from date of manufacture)
- 2 years from date of production in unopened cans, if stored in dry, well ventilated areas, not in direct sunlight at temperatures between 5° and 35°C.
- Touch Dry
- 1 Hour
- Recommended Dry Film Thickness
- 23 µm
- Recommended Wet Film Thickness
- 70 μm
- UN Number
- UN1263
- Consumption
- 10 - 15 m²/l
- Base Type
- Solvent-Based
- Suitable For Use On
- Roof
- Finish
- Gloss
- Application Method
- Brush
- Application Method
- Roller
- Application Method
- Spray
- Usages
- Adhesion Promoter
- Product Usage Type
- Primer
- Fastest Delivery
- Next Working Day
- Colour Family
- Grey
- Categorised As
- Masonry Primers
Questions
Question about the product
Tomas
on
2024-05-16 20:39:08
| Question:
Hi can Rust-Oleum Mathys Primer 44 HS be used on a flat roof bare concrete? |
Answer from Rawlins’ Technical Team:
Thank you for the enquiry, please can you provide more information on the preparation to the concrete, application and other products this needs to be compatible with to [email protected] so we can assist with a recommendation. | |
|
Karen
on
2024-04-03 08:26:57
| Question:
Can you advise if Rust Oleum 44HS is breathable? And confirm the SD value please? |
Answer from Rawlins’ Technical Team:
Thank you for your enquiry, we have replied to you directly via e-mail. | |
|
Andy
on
2023-04-24 16:57:54
| Question:
Would this be good to use on Rosemary Clay tiles before panting |
Answer from Rawlins’ Technical Team:
Thank you for the enquiry, please can you send some more information and pictures of the tiles you are looking to paint, with information on the topcoat this is to be used with to [email protected]. | |
|
Kate
on
2021-07-07 09:17:36
| Question:
Is this product suitable for previously painted or unpainted asbestos? |
Answer from Rawlins’ Technical Team:
This primer is for improving the adhesion on bare porous substrates such as asbestos and not generally used on previously painted surfaces. | |
|
MBP
on
2021-05-08 15:35:31
| Question:
I have a fairly large corrugated roof on my shed, all rusty. Would the primer 44 HS be suitable for that? |
Answer from Rawlins’ Technical Team:
No, this primer is for use on porous and mineral substrates, assuming the metal roof is pitched, it is clean, dry, sound and prepared as detailed in the technical data sheet we can recommend Rust-Oleum Mathys Noxyde Pegarust. | |
|
Martin Hewett
on
2020-12-01 13:27:38
| Question:
I’m trying to fix a small leak in a slate roof,already had a roofer try and find it with out luck. I’ve already purchased Rust-oleum Mathys fillcoat fibres from you and I’m also going to purchase the primer 44 HS my question is after priming how soon can I apply the fillcoat fibres? The information on the web site says touch dry 1 hour reapply 24 hours primer. Not clear as when I can put the fillcoat on? Many thanks Martin |
Answer from Rawlins’ Technical Team:
Primer 44HS is dry to over paint in 24 hours when applied at 20°C and a humidity of 50%. | |
|
darren
on
2017-03-23 15:22:35
| Question:
can i use mathys primer 44 on exterior lime rendering
?? thanks |
Answer from Rawlins’ Technical Team:
As long as the lime render is in good condition, clean, prepared, etc, then Rust-Oleum Mathys Primer 44 HS would be our normal priming solution prior to applying suitable topcoat(s). | |
IMPORTANT SHIPPING & DELIVERY INFORMATION
Rust-Oleum Mathys Primer 44 HS is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT
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