Free Express Delivery to UK MAINLAND

Breathable Brick Sealer & Waterproofer

Price range: £5.95 through £99.00

Breathable Brick Sealer & Waterproofer is a water-based impregnating sealer, suitable for sealing exterior brickwork. This breathable exterior brick sealer can be applied to porous clay-based brick, cement-based brick, natural stone & general masonry.

  • Easy to apply with a low pressure pump-up sprayer, roller or brush
  • Suitable for porous bricks, natural stone, renders, concrete & more
  • Allows the treated surface to breathe
  • Increases water repellence to resist damp & rain water
  • Inhibits organic growth, resists UV light & carbon deposits
  • Safe to use on modern sand & cement mortar & lime pointing
  • Non-film forming & rapid drying
  • Does not contain solvents or VOCs

Breathable Brick Sealer & Waterproofer is suitable for use on external modern cavity brick walls and rubble-filled solid walls. This external brick sealer is suitable for use on listed buildings where retaining a breathable surface is paramount. This breathable sealer will leave the brick with an unaltered natural matt finish.

Select from a 5 litre, 10 litre or 20 litre container
View all our products and how-to guides for cleaning and sealing bricks

FREE Express Delivery

A breathable exterior brick sealer & waterproofer

Breathable Brick Sealer & Waterproofer is a water-based impregnating sealer suitable for sealing exterior brickwork. Breathable Brick Sealer & Waterproofer can be applied to any porous clay-based brick, cement-based brick, natural stone & general masonry. This penetrating sealer resists rainwater penetration, UV light, carbon deposits and organic growth. Rapid drying – free from solvents & VOCs.

An impregnating sealer which resists water, UV light & carbon deposits

This highly effective brick wall sealer will last 10 years or more on exterior walls. Impregnating sealers have a greater resistance to UV light, rainwater penetration & carbon deposits than normal acrylic sealers. Impregnating sealers are superior to surface acrylic sealers which are film-forming, this film or ‘skin’ can lead to trapped moisture. Impregnating sealers cannot trap moisture and are 100% breathable.

Breathable Brick Sealer & Waterproofer is non-film forming, it does not alter the appearance of the sealed surface. The sealing polymers are deposited within the pores of the brick, thus sealing from within. Breathable Brick Sealer & Waterproofer is suitable for sealing old rubble-filled walls so appropriate for use on listed or historic buildings. But can also be applied to newly built brick walls & other structures.

The sealer is non-film forming, so cannot trap moisture and will not require stripping in the future. This form of external brick sealer can simply be reapplied if the porosity of the brick increases over time.

This product is easy to apply using a low-pressure sprayer in one generous application with a light top-up application approximately 40 minutes later. Once the sealer has been applied please redistribute any areas where the sealer may have collected or pooled within 20-30 minutes. This can be completed using a brush or roller, this ensures no sealer has been left on the surface. Very porous bricks may absorb all the sealer immediately.

Do not allow any sealer to simply dry on the surface, it should all have been absorbed into the treated surface or be removed (where present) after 20-30 minutes.

Please adjust the amount of sealer being applied based on porosity. Old Victorian clay bricks will be more porous than a modern dense house brick. Sand-blasted brick and masonry will be very porous. Very dense surfaces may not require a 2nd application, please carry out a test before any application to check the level of porosity of the material to be sealed.

This product can also be applied indoors, typically to surfaces in wet areas which cannot be sealed with our Interior Brick Sealer & Dustproofer.

Available in 5 litre, 10 litre & 20 litre containers. Samples are available via the select size drop down menu. 

Please read the full instructions & related information contained within the Technical Data Sheet. If you require help choosing a sealer or cleaning product contact us at info@floorseal.co.uk

  • Please read the Technical Data Sheet for full instructions.
  • Carry out a test in an inconspicuous area. If this product is not suitable for use, do not continue to use.
  • All surfaces are to be completely dry, do not apply if rain is likely.
  • Apply with a low-pressure pump-up sprayer, roller, or brush.
  • Saturate the surface allowing the product to soak into the substrate.
  • Remove any excess with a dry cloth or roller within 20-30 minutes of application.
  • Do not allow any excess product to dry on the surface.
  • Dense surfaces may only require one application.
  • For highly porous surfaces, such as sandblasted brickwork, lightly reapply the sealer approximately 40 minutes after the first application.
  • Remove any excess as before.
  • The product dries in approximately 1 hour and cures over 24 hours.
  • Only apply when the air temperatures are above 10ºC and below 24ºC.
  • Do not apply to non-porous, polished, metallic, plastic, or glazed surfaces.

5m2 per litre (per coat).

A coverage rate of up to 10m2 per litre per coat may be possible on dense brickwork or masonry.
Test to obtain the correct coverage rate as the coverage rate will vary depending on porosity.

UK Mainland

FREE Express
1-2 working days

Order by 1pm Mon-Fri

Northern Ireland
& Offshore Islands
Not available

Do you offer Next Day Delivery?
Unfortunately we don’t offer a guaranteed next day service, however the majority of FREE Express packages to England, Wales & Scotland are delivered next working day, when ordered before 1pm Monday-Friday. Excludes remote locations including Cornwall and Highlands (allow 2-5 days)
.

When will my order be sent out?
Orders placed before 1pm (Mon-Fri) are despatched same day. Orders placed on weekends are processed the next working day.

Please visit our Delivery Page for further information

Please email us with your product order number for SDS information.

For the latest guides and information on best user practices, click here.

Frequently Asked Questions

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Additional Information

SKU:EXBS
Sizes Available: 
  • 10 Litre
  • 100ml Sample
  • 20 Litre
  • 5 Litre
SKU EXBS Shop By Location , Shop By Surface ,
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Breathable Brick Sealer & Waterproofer (5 litre)
Breathable Brick Sealer & Waterproofer
Price range: £5.95 through £99.00
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