Zinsser Gardz High Performance Sealer Paint

SKU: ZN7160001C1
Zinsser - Gardz High Performance Sealer Paint - Water-Based
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Zinsser Gardz High Performance Sealer Water-Base 500 ml

Zinsser Gardz High Performance Sealer Paint

SKU: ZN7160001C1
Regular price £17.33
Tax included.

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  • In stock, ready to ship
  • Next Working Day Shipping Only £3.95


Zinsser Gardz is a water-based sealer for porous, chalky, and crumbling surfaces, paints, and textured finishes. It’s formulated to deeply penetrate and dry to a hard, moisture-resistant film that seals and binds down problem surfaces. This unique sealer can be used in multiple projects from repairing paper damage on drywall to sealing old wallpaper. Along with a range of uses this sealer is fast drying, has a low odour, and dries clear making it easy to use.

• Low odour

• Binds chalky and porous surfaces

• Dries fast to a hard, moisture-proof film

• Can be top-coated with both water-based or solvent-based products

Area Interior
Recommended Use Repair and seal – damaged drywall, plaster, calcimine, wallpaper adhesive residue, textured & popcorn finishes, old wallpaper, builders flat paint
Base Water-Based
Coverage Up to 5-10m2per litre
Drying Time 30 Minutes
Re-Coat Time 3 Hours
Recommended Coats 1 Coat


Always ensure the surface to be treated is clean, dry, and free from any dust or possible contaminates.

• Remove any loose or peeling paint or wallpaper by sanding or scraping the surface. (Always take special care when sanding or scraping old surfaces, ensure to wear a suitable face covering to avoid inhalation.)

• Seal any stains with Zinsser Stain Killing Primer-Sealer

• Cut away loose or torn drywall facing paper with a razor or sand back with 80-grit paper until a sound area is reached. If drywall is gouged, remove loose pieces of gypsum core

• Remove loose wallcovering and residual wallcovering adhesive using DIF Wallpaper Stripper

• Skim coated or spackled areas should be sanded smooth using 100 grit sandpaper


Before applying stir the product thoroughly and test a small area.

• For best results use a quality nylon/polyester/synthetic brush with flagged tips. A roller can be used we recommend a 3/8” or less synthetic roller

• Do not overload the brush

• Apply Gardz to walls from the bottom up to prevent product from running down the wall

• Brush out any runs as they occur

• When applying to ceilings do not press hard or the product will drip out of the roller

• For ceiling applications where a roller would be too messy Gardz may be applied using a power sprayer or garden sprayer

• Maintain a distance of at least 45 to 60cm between the spray tip and the surface for pressure sprayers and 30 – 45 cm for garden sprayers

Note: Some types of wallpaper and translucent wallcoverings may require an additional coat of an opaque primer after use of Zinsser Gardz.

Note: Always follow the manufacturer instructions found on the tin.


All orders placed on a working day before 3pm will be dispatched on the same day for next working day delivery. Orders placed before 3pm on Friday will be delivered on Monday (excluding bank holidays). Orders placed on weekends and Bank Holidays will be dispatched on the next working day.

Delivery Charges 



Next Working Day




Certain postcodes delivery times and charges may vary please see our list below of effected postcodes. Please contact us prior to ordering, alternatively please ensure your number is on your order and we will contact you to discuss the best delivery method and charges.

AB37 - AB38

IV40 - IV56

PA42 - PA49

AB44 - AB45



AB53 - AB56

IV9 - IV12

PA61 - PA78

CA18 - CA27

KA27 - KA28

PA80 - PA88

HS1 - HS9

KW (All postcodes)

PH17 - PH26

Isle of Man (All IM postcodes)

LA15 - LA23

PH30 - PH44

IV14 - IV29


PH49 - PH50

IV30 - IV32

PA21 - PA38

TR21 - TR25



GY1 - GY10

ZE (All postcodes)

GY1 - GY10

JE1 - JE5

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We offer a no quibble 14 day money back guarantee for all goods shipped correctly that are not required. If the item is not required, please send the item back for a full refund in its original condition, unused with its original packaging. 

We keep the process simple

  • Contact us as soon as possible to inform us you will be returning the product.
  • Please include the original packing slip in the box, if this is unavailable please include a slip with your order number and name.
  • Package the goods well to ensure they arrive back undamaged, we recommend using the original packing it was sent in if this is still usable.
  • Return to our address:
Unit 20 
Adlington Business Park
SK10 4NL

Return postage will be at your own cost. We always advise you send parcels with a tracked service as we cannot be held responsible for any loses/damages in transit. We recommend using a courier site such as Parcel Monkey. Once goods are received they will be checked and processed within 3-5 days and you will receive a notification of refund.

Please note any bespoke items or mixed to order can not be returned, if you are unsure this is your product please check the listing or contact us for details.
We always recommend getting samples or contacting us for free of charge colourcharts. We do our best to represent colours as accurately as possible however screens variations and different surfaces can alter this. Unfortunately in the event you do not like the colour we are unable to accept the product back if they it has been opened.

Damaged Paint

Please visit our damages page where we can help resolve the issue for you. 

Incorrect Item

We will be happy to organise an exchange for the correct goods at no extra charge to yourself, please call us to organise this.

Faulty Items

If you find a fault with your product, we can offer a full refund or exchange within 30 days. We test every product that is returned to us, sadly if a product is found to have no fault we cannot refund this and the you will be given the option to have this returned to you. Please contact us to discuss these options. If you find fault after 30 days of purchase you may wish to contact the manufacturer directly as they will be able to offer support with the product.



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