Guard Industry




ProtectGuard® HD - Heavy Duty Natural Look Sealer

5.00 out of 5
(2 customer reviews)




ProtectGuard HD Heavy Duty Sealer Logo

ProtectGuard® HD – Heavy Duty Sealer

ProtectGuard HD Heavy Duty Granite Sealer Olympic Park Beijing Project ReferenceProtectGuard® HD is the product of choice for all those heavy duty sealing applications. It has all the water-repellent, oil-repellent and anti-soiling properties of ProtectGuard but has been specifically designed to have a very high abrasion resistance. This makes it able to withstand high traffic and high soiling loads. As such it is perfect for floors with lots of pedestrian traffic, like footpaths, malls and entertaining areas. It is also suitable for factory floors, parking areas and driveways.

non slip heavy duty sealerProtectGuard® HD is a natural look sealer that will not alter the natural look or texture of the materials being sealed. This also means that it will not alter the natural grip of the flooring materials. This is particularly important in pedestrian applications where slip hazards need to be eliminated. This fact, coupled with its durability make it an excellent choice for sealing paving around swimming pools.

ProtectGuard HD Heavy Duty Paving Sealer Tian An Men Square Beijing Project Reference

ProtectGuard® HD acts against the main causes of degradation, such as atmospheric pollution, greasy soiling, water seepage, acid rain, chewing gum and general dirt and grime. It prevents these contaminants from soaking into the surface and therefore prevents permanent staining. Spills and stains can then easily be cleaned off the surface during regular maintenance cleaning.

ProtectGuard® HD heavy duty sealer is tried and proven.  It has been competitively selected for projects all over the world. Some examples include Tian An Men Square and the Beijing National Stadium in China, the Louis Vuitton Foundation Building in Paris, and the pavement around Whitehall in London. Further, it has a 10 year, AXA insurance backed guarantee for use in high traffic flooring applications.

ProtectGuard® HD is an Environmentally Friendly Eco Sealer

At Guard Industry we pride ourselves on providing high performance products which are not harmful to people or the environment. All our products have been developed with the goal of zero environmental impact. ProtectGuard® HD is tough on stains but gentle on the environment. It is safe for applicators, end users and the environment. This eco sealer is:

water based sealers

  • Non Hazardous & Non Toxic
  • Silicone & Solvent Free
  • 100% Biodegradable
  • Water Based
  • VOC <1 g/l

ProtectGuard® HD is a Natural Look, Permanent Anti-Graffiti Coating

ProtectGuard® HD even repels graffiti! It prevents paint and ink from getting into the pores of treated surfaces. These can then be easily removed with GraffiGuard 2030 Eco without damaging the sealer. This eco graffiti remover can be used safely with both ProtectGuard® and ProtectGuard® HD. This is a very safe and effective means of controlling and managing graffiti.

Most anti graffiti coatings will change the appearance of the surface. Such coatings detract from the raw beauty of natural materials. Using ProtectGuard® or ProtectGuard® HD is a safe and effective way to retain that beauty while also providing protection against nuisance graffiti.

ProtectGuard® HD is Easy to Use

ProtectGuard® HD is a safe water based product. It is applied in an easy one coat application with either a low pressure garden sprayer, roller or a brush. We recommend using a garden sprayer with a nice even mist like spray. Apply one coat to the point of saturation. Then walk away! Don’t over apply. You just need enough product to achieve a wet film that persists for a minute or so. Protect the surface for 24 hours. Best performance achieved after 7 days. Clean-up any equipment with water and reuse on your next job.

Is ProtectGuard® HD Right for You?

ProtectGuard® HD will provide excellent protection on medium to low porosity materials. It is suitable for use on a wide range of products and surfaces. Some suitable materials include:

  • Concrete
  • Terracotta
  • Bluestone
  • Travertine
  • Granite
  • Synthetic & Reconstituted Stone
  • Non crystallised MarbleProtectGuard Porosity Test Selection Chart

ProtectGuard® HD may not be suitable or cost effective for very porous materials or very low porosity materials. We always recommend performing a water droplet test on your materials to help with material selection. The test is simple to do. Simply put a drop of water on the material and see how long it takes to soak into the surface. Then compare to the chart to see which products are suitable.

Additional information

Weight N/A
Dimensions N/A


Protection Type

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Surface Area

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Surface Type


  • Protects against water, oil , stains and graffiti
  • Does not form a film, lets the material breath
  • Odourless and invisible: does not change the colour
  • UV and frost resistant
  • Slows down ageing and makes maintenance easier


  • Porous materials: natural or reconstituted stone, concrete, terracotta, coating, etc.
  • Floors and facades
  • New or old
  • Internal or external
  • Recommended for patios, drives, pool surround areas, walls, gables, tiling joints, etc.


Preparing the material:


  • Use the product in its pure form: do not dilute it.
  • Shake the packaging well before use and carry out a preliminary test.
  • The material must be impregnated up to saturation in a single coat or two coats”wet on wet”.
  • Do not overload the material, remove any excess before drying.
  • On vertical materials, apply from bottom to top
  • Protected drying: 24 hours.
  • Optimal efficiency reached after 7 days.

Tools Required

  • Low pressure sprayer, roller or brush

Data Sheets

Safety Data Sheet

Technical Data Sheet

Technical Specs

2 reviews for ProtectGuard® HD – Heavy Duty Natural Look Sealer

  1. 5 out of 5

    Chris Thorne

    My name is Chris Thorne and I wrote my first Testimonial on Guard Industry product over 2 years ago, I would like to update my Testimonial and let you know I am still using Guard Industry’s cleaning and sealing range.
    As an Accredited Sealer Applicator my go to sealers are Guard Industry’s ProtectGuard® or ProtectGuard® HD Sealers as they are a water base penetrating sealer, 100% Biodegradable, has a 10-year effectiveness guarantee and very user friendly.
    There are no hidden secrets in the “how to use” instructions, for large jobs I prefer to apply the ProtectGuard® Sealer using a sprayer and wiping of the access using a lamb’s wool applicator. Smaller jobs I use a fence paint brush or a lamb’s wool applicator to apply the sealer and use a microfibre cloth to wipe of the access.
    Please remember the key to a good sealing job is preparation and for this I use Guard Wash® or Guard Wash® Express as it eliminates organic contaminates on all materials.

  2. 5 out of 5

    Gordon (verified owner)

    Verified reviewVerified review - view originalExternal link | auWestern Australia, Australia

    Bloody great product!

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Q & A

Will the ProtectGuard HD prevent my courtyard limestone flagstones from moss growth? Being somewhat shady in the winter months, green moss grows on my courtyard floors, making them look unsightly and slippery. Will it allow the stone to breath? Since I do not want the floors to mould up with any possible rising humidity from underneath the 400+ year-old house. Thanks! Joseph Micallef asked on 31/08/2021
ProtectGuard HD will help prevent moisture related issues and make the surface easier to clean however in problem areas of shade and sitting water we would also advise that you first apply 1:1, 1 part Guard Anti-M24 & 1 part water to the area once the area has been cleaned and before the sealer application. This will kill the moss root systems and continue to work in the stone to keep the moss away. ProtectGuard HD will allow the surface to breath and is great for heritage buildings and stonework. Peter Cowan answered on 01/09/2021 store managerstore manager
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Is Protect Guard HD ok for slate floors Simon asked on 12/08/2021
ProtectGuard HD is a great solution to seal slate floors if you are requiring a natural finish penetrating sealer to repel water, stains and oil. The slate will need to be raw for ProtectGuard HD to penetrate so any previously installed topical sealers or similar will have to be removed before application. Peter Cowan answered on 13/08/2021 store managerstore manager
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