Bostik Cementone Super Penetration Bitumen Primer - Black - 1L

Name: Bostik Cementone Super Penetration Bitumen Primer - Black - 1L
Brand: Bostik
SKU: v4odnqqdge
Price: 7.84 GBP
Availability: InStock

The Cementone Super Penetration Bitumen Primer delivers professional-grade surface preparation eng...

Best current price£7.84from Bradfords

Best offers

Shopping.co.uk recommended and popular offers

Lowest priceMost popular

Bradfords£7.84Visit shop

Bostik - Super Penetration Bitumen Primer - 1L

Visit shop

One Offer

1 offer from £7.84

View price history by clicking the chart icon.

BradfordsBostik - Super Penetration Bitumen Primer - 1L

£25.00 delivery

£7.84

Visit shop

Product Information

Full details

The Bostik Cementone Super Penetration Bitumen Primer is a professional-grade surface treatment designed for contractors and DIY enthusiasts who need a reliable base for roofing and waterproofing projects. Its primary benefit is its high-penetration formula that binds loose particles on porous surfaces to ensure superior adhesion for subsequent bituminous coatings; however, it is important to note that its specific formulation is limited to compatible bitumen-based systems and requires careful surface preparation to achieve optimal results.

All features

Colour	Black
Model Part Number	30811883
Brand	Bostik

Extended Product Information

FAQs

Can I use this primer on wet surfaces?

No, the surface should be clean and dry to ensure proper penetration and long-term adhesion.

Is this primer suitable for plastic or PVC roofs?

This product is specifically designed for bituminous materials, concrete, and metals; do not use it on plastic or PVC surfaces.

How do I clean my brushes after use?

Clean all application tools immediately using a suitable solvent like white spirit.

Does the colour change the final look of the roof?

The black finish is intended to be a base layer and will be covered by your final bituminous coating, so it will not affect the final visual aesthetic.

Can I apply this with a paint sprayer?

Yes, this primer is formulated for both brush and spray application methods.

What is the typical coverage per litre?

Coverage varies based on the porosity of the substrate; highly porous surfaces will absorb more product than non-porous ones.

Troubleshooting

Primer feels tacky after 6 hours

High humidity or low temperatures may delay drying; provide additional ventilation and wait until the surface is completely dry to touch before applying the next coat.

Poor adhesion on the substrate

Ensure all loose dust, grease, and moisture were removed prior to application; the surface must be clean for the primer to bond correctly.

Pros and Cons

Pros

Excellent for stabilizing dusty or porous surfaces
Highly versatile across multiple roofing materials
Easy to apply with standard brushes or sprayers
Clear visual indicator due to black pigmentation

Cons

Longer wait times for heavy-duty application in cold weather
Requires proper ventilation due to chemical base
Limited to specific bituminous compatible systems

Setup, Compatibility & Care

Before application, ensure the substrate is clean, dry, and free from oil, grease, or loose debris. Use a stiff brush to remove any flaking material or moss. If using a spray device, verify that the viscosity is compatible with your nozzle size to avoid clogging. Once applied, ensure the primer is fully cured (non-tacky) before applying final coatings. Clean brushes and spray equipment immediately after use using a white spirit or a professional-grade bituminous solvent, as the primer will harden permanently once cured. Store the container in a cool, well-ventilated area with the lid tightly sealed to prevent solvent evaporation and product thickening.