Bostik Flashband & Primer Black 500ml (57709)

£ 5.99INC VAT

Add to basket for...

Not available for delivery

Bostik Flashband & Primer Black 500ml (57709)

You must be 18 years old or over to buy this product. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK.

Solvent-based primer to prepare porous, rough, dusty surfaces. Suitable as a primer before applying flashband. Ideal for cold, damp conditions. Fast drying and easy to apply. Covers approx. 6 m²/Ltr.

  • Lead-Free
  • Heat-Resistant
  • Coverage per Litre: 6m²/Ltr
  • Model No:

More Info

View all: Bostik Roof Repair

£5.99INC VAT (£11.98/Ltr)

Add to basket for...

Not available for delivery

Add to saved list...

Rated 5 out of 5 by from Cracking product with a but This stuff is great, does exactly what is says on the tin, I used it to seal edges of joined stapled shed felt, it goes on really well, sealed nearly straight away, sealing several long thin strips (approx 3 inch x 16 m, I ran out just before the last strip, so I would say it covers less than the amount stated, but at that price it is just better to buy two and make sure you have enough
Date published: 2022-02-26
Rated 5 out of 5 by from Excellent for bonding to brick This primer is excellent to promote better bonding to porous brickwork and painted render. Flashband can sometimes be temperamental sticking to painted surfaces or some bricks. This primer solves that and gives a good watertight seal
Date published: 2021-11-23
Rated 5 out of 5 by from Adheres Well I bought this along with the Flashband to breach a gap between a galvanised steel roof and garage wall. It was easy to apply and does the job perfectly.
Date published: 2021-11-07
Rated 4 out of 5 by from Disappointed I used Bostik Primer prior to applying the Flashband, I used a roller to apply the Flashband but had difficulty getting it to stick well. The backing paper would not come off cleanly, and left small strips at the sides. My opinion is that it was stored on its side, causing it to stick at the edges.
Date published: 2021-11-03
  • y_2022, m_7, d_1, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.32
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_39
  • loc_en_GB, sid_57709, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 9ms

How this primer reacts to PU paint?

Plan is applying this primer on to concrete floor like damp proof barrier (have few damp spots what newer dries). After this -PU primer and Pu floor paint. Or maybe you can recommend different product? Thank you Andrius
Asked by: Andrius07
Bostik Flashband Primer is a bitumen solution, for priming/sealing brickwork, cement renderings, roof tiles, concrete, mineralised felt, timber, metal, rainwater pipes, gutters and corrugated sheeting prior to applying Flashband. It would not be suitable for use on a concrete floor to perform as a damp proof membrane or barrier.
Answered by: Bostik Product Support
Date published: 2021-12-18

Is this suitable for painting plastic?

I need to paint plastic containers to exclude light.
Asked by: Shieldsman
The Bostik Flashband Primer Black 500 ml is a solvent based bitumen primer deigned for exterior application to porous materials such as concrete. wood, brick and stone where it is left to dry for a few hours, however it is not suitable to be applied to any plastics as such. ( Once dry, the Flashband ( which is a resin modified bitumen flashing tape ) is applied to it, and the Flashband then bonds to this. ) Consequently, it is not suitable to be applied to plastic containers to extrude light.
Answered by: Bostik Product Support
Date published: 2021-12-12

Primer delay

How long can the applied primer be left before applying the flashband, can it sit for a few days or weeks before applying the band
Asked by: Perthbmc
The Bostik Flashband Primer is a bitumen based primer which is applied to porous substrates such as concrete, wood, brickwork and stonework and allowed to dry before application of the Flashband. ( for non-porous substrates such as metal, UPVC, rigid PVC and polycarbonate, the primer is not required. ) It is recommended to apply the Flashband to the primed surface as soon as possible after the primer has completed drying, with the drying time being typically 4 to 6 hours, although this can vary according to local conditions. After the primer has dried, if left as is, then over time, the surface will pick up dust and material blowing in the wind, and if rained on, then this can also deposit fine dirt and material. This could interfere with the overall bonding performance when the Flashband is applied (Which could include a de-bond ), as well as affect the overall bond strength of the application when in service.
Answered by: Bostik Product Support
Date published: 2021-08-03

Is this suitable for priming felt before applying a flashband ?

Asked by: RHew
Bostik Flashband Primer for Roofs is a specially designed, structured rubber bitumen emulsion for aiding adhesion of Bostik Flashband to rough or porous building surfaces.
Answered by: Bostik Product Support
Date published: 2021-10-09

Can this be used on epdm?

Asked by: Goodgollymissmolly
Flashband is not recommended for its use on EPDM.
Answered by: Bostik Product Support
Date published: 2021-03-06
  • y_2022, m_7, d_1, h_20CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.32
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_16
  • loc_en_GB, sid_57709, prod, sort_[SortEntry(order=LOCALE, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 10ms
  • bvseo-msg: BV SEO Content for this product did not include verbose reviews.;
Brand Bostik
Colour Black
Coverage Per Litre 6 m²/Ltr
Label Info 1: Signal Word Danger
Label Info 2: Hazard Statements H372 Causes damage to organs through prolonged or repeated exposure.H336 May cause drowsiness or dizziness.H411 Toxic to aquatic life with long lasting effects.H226 - Flammable liquid and vapourEUH 066 Repeated exposure may cause skin dryness or cracking.
Label Info 3: Precautionary Statements P101 If medical advice is needed, have product container or label at hand.P102 Keep out of reach of children.P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.P260 Do not breathe dust/fume/gas/mist/vapours/spray.P271 Use only outdoors or in a well-ventilated area.P273 Avoid release to the environment.P302 + P352 IF ON SKIN: Wash with plenty of water/…P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.P391 Collect spillage.P403 + P233 Store in a well-ventilated place. Keep container tightly closed.P501 Dispose of contents/container to …
Manufacturer Guarantee 1 Year Guarantee
Pack Size 1
Parent Colour Black
Pieces in Pack/Case 1
Product Type Flashband & Primer
Resistant Type Heat-Resistant
Total Product Weight 0.56 kg
Volume 500 ml

Hazardous - Delivery unavailable for any offshore location.


Safety Data Sheet (COSHH)