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Bostik Cementone Exterior Water Seal 5L

Ref: BCHM052

  • Protects exterior walls and wood from water ingress
  • Fast drying
  • Suitable for masonry, brick, stone, terracotta, rendering and timber
  • Protects against rain, damp, frost, condensation and efflorescence
  • Increases life of most building materials
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OVERVIEW

  • Protects exterior walls and wood from water ingress
  • Fast drying
  • Suitable for masonry, brick, stone, terracotta, rendering and timber
  • Protects against rain, damp, frost, condensation and efflorescence
  • Increases life of most building materials
  • Creates a transparent, breathable surface
  • Coverage: 2m² to 4m² per L, per coat (depending on substrate texture, porosity and application technique)
  • Size: 5L

High-performance exterior waterproofer for long-lasting protection of masonry and wood. Bostik Water Seal penetrates deep below the surface, creating a water-resistant barrier on a wide range of porous materials, including concrete, brick, stone, slate, terracotta, render and timber. This fast-drying sealer ensures the surface remains permeable to water vapour, allowing it to breathe and preventing trapped water.

In addition to protecting against rain and damp, Bostik Water Seal also prevents condensation, frost damage and efflorescence.

Drying time

3 to 4 hours approx. Full water-repellent properties develop after 24 hours approx. (depending on coating thickness, surface porosity and ambient conditions).

Number of coats

Masonry: One coat is usually sufficient, but on very absorbent surfaces, a second coat may be required. Apply the second coat before the first has dried (approx. 2 hours).

Wood: Two coats are recommended. Proceed as above, paying particular attention to the end grain. Once applied, leave Bostik Water Seal for one month before painting.

SPECIFICATION

Brand Bostik
Manufacturer's Part Number (MPN) 30812236
GTIN (Barcode) 5011734010932
Colour Clear
Colour Group Clear
Size 5000ml
Application Method Brush, Spray
Coverage 2-4m²/litre
Number of Coats 1-2
Usage Location Exterior
Liquid Base Solvent Based
Recoatable Time 2 hours
Dry Time 3-4 hours

Reviews

DELIVERY & RETURNS

When will my order be dispatched and delivered?

Orders delivered by our branches are normally dispatched and delivered within 1-2 working days.

Orders delivered by our courier partners are dispatched same-day when ordered before 2pm and next working day when ordered after 2pm or on weekends.

Courier deliveries are normally delivered within 1-2 working days. *in exceptionally busy periods e.g. holidays, lead times can be longer than the norms stated above and orders should be placed early to avoid disappointment.

Orders delivery by our suppliers may have an extended lead time.

For more details, please see our Delivery Details page.


How much will delivery cost?

Delivery charges are calculated at checkout and vary per product. Orders coming from multiple branches may incur a charge per branch, depending on the volume ordered.

For more details, please see our Delivery Details page.


Can I return this item for a refund?

Yes.

We are governed and adhere to, the United Kingdom Distance Selling Regulations. This means we will accept returns and offer a full refund as long as the item is unused, unopened and still in the original packaging.

Please note that we cannot accept returns or cancellations for orders that have been ordered as a special item, powders (e.g. cement and plaster) and bulk bagged aggregates. You will be notified at order stage if the item is a special item. Stock items returned to branch may be subject to a 10% restocking charge.

To return your order, please pack it securely and send it back to us, we must receive it back within 7 days of the date that you received it. Please note that it is your responsibility for returning the goods at your expense unless we delivered the item to you in error or the item is faulty. A refund will be issued as soon as possible but within 30 days at the latest.

For more details, please see our Return & Refund Policy page.

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