Call 01623 645 645  |  Fax 01623 510 287  |  Email  |  Send an enquiry

Zinsser Gardz Sealer Primer

Please note this product is only available for collection in store


  • Zinsser Gardz Sealer Primer is a clear, water-based, acrylic resin sealer that penetrates deeply into porous surfaces.
  • It dries fast, and forms a hard, moisture-proof film that prevents drywall blistering and bubbling.
  • It binds down chalky surfaces, strengthens soft texture finishes, and seals in residual wallpaper paste.
  • Gardz Sealer Primer can be applied to high-pH surfaces, and is easily cleaned up with soap and water.

Recommended Uses:

  • Damaged Drywall: prevents bubbles that form when damaged drywall is skim coated with spackling or joint compound. It penetrates and seals damaged facing paper, restoring it to a sound surface for repairs, suitable for painting or wall covering.
  • New Drywall / Joint Compound and Spackling: new gypsum drywall, joint compound and spackling are very porous and can make finish coatings appear splotchy and uneven. It penetrates and uniformly seals, creating a moisture resistant film that protects drywall from blistering, tearing and other damage when redecorating in the future.
  • Plaster: freshly applied plaster is extremely porous but also extremely alkaline with a pH of 12.0 or more in many cases. Allow new plaster to cure at least 24 hours before applying. Before priming old, bare plaster, be sure to determine that the surface is clean, dry and in sound condition, taking care to repair any cracks or holes with spackling paste or joint compound before sealing the surface.
  • Calcimine: is a very old form of plaster that is extremely chalky and water-sensitive. It penetrates calcimine more effectively than oil-base coatings and has a much lower odour. Because it resists moisture, it prevents water-based topcoat paint or texture finishes from softening up calcimine layers underneath.
  • Wallpaper Adhesive Residue: water-based coatings or texture finishes will reactivate old wallpaper adhesive, resulting in cracking and peeling. Formulated to completely seal in residual adhesive and prevent it from ruining water-based topcoats and texture finishes.
  • Texture and Popcorn Finishes: Can be used to seal textured walls and popcorn ceilings before applying water base primer or paint. It penetrates soft or crumbly texture material and hardens it, creating a durable, water resistant barrier that prevents primer or paint from softening texture material underneath.
  • Old Wallpaper: most of the wallpaper installed before the 1960’s was true paper, with no vinyl coating. To determine if the wall covering is a true paper wipe a wet sponge across the surface, if the water is readily absorbed it means there is no vinyl coating. This type of wall covering can be effectively sealed. First, peel away any loose or frayed edges, or whatever remains should be firmly adhered to the wall. Apply as you would to any other wall surface.
  • Pre-Wall covering Primer: penetrates, seals, sizes and protects drywall facing paper and skim coat, providing a properly sealed surface for new wall covering. At redecorating time, it protects the surface of the drywall when the old wall covering is stripped off.
  • Builder’s Flat Paint: penetrates chalky, builder’s flat paint and binds it to the wall, providing water-resistant protection from paint, wall covering and texture finishes.

View related products

Be the first to review this product. Review Product

Delivery Information

Free delivery on all online orders over £39.99, delivered to the UK mainland only; A small order charge of £6.50 vat is charged on all orders under £39.99 (net). 

Many of our items are available for next day delivery, where items are made to order or not currently in stock delivery times will vary. Please contact us for a confirmed delivery date or alternatively a representative will confirm your order. 

Special delivery services are available; please contact our Sales Office to discuss your specific requirements. 

The following postcodes will be subject to a delivery surcharge: 

AB37 & AB38, AB41-AB56, FK19-FK21, IV1-IV40, IV52-IV54, IV63, JE1-JE5, KW1-KW14, PA21-PA40, PH15-PH41, PH49, PH50, HS, IV41-IV51, IV55 & IV56, KA27, KA28, PA20, PA41-PA78, PH42-PH44 and ZE, This also includes Northern Ireland. Certain products within our range are subject to a delivery surcharge when delivered to additional areas in Scotland than those already listed.

A customer service representive, will contact you upon receipt of your order to advise of the relevant charges or please call us to confirm the surcharge prior to placing your order

If you would prefer to collect your delivery from our warehouse, please select collection at the checkout and we will let you know when your order is ready to collect.

Contact Us for Bulk Discounts

Part Number Description Price
ID 164424
Gardz Sealer Primer 500ml

(£4.00) RRP (Ex VAT)

£3.54 (Ex VAT)

£4.25 (Inc VAT)

ID 164425
Gardz Sealer Primer 1 Litre

(£7.00) RRP (Ex VAT)

£6.19 (Ex VAT)

£7.43 (Inc VAT)

Estimated delivery is for guidance only, an exact delivery date will be confirmed on your order acknowledgement. Please contact us for further information.We make every effort to ensure that the information provided on this page is accurate, we can not be held responsible for any errors, typography or otherwise. Illustrations and images are representational of typical styles and designs may vary. Prices and specifications may alter without prior notice.

  • FREE Delivery!

    free delivery

    FREE delivery available!*

  • Expert Support

    expert support

    We know the products that you need!

  • 24hr Reliability

    24hr reliability

    We go the extra mile to be there

  • Solutions!!!


    We find you the product for the job!

*Online orders over £39.99 (net) delivered to UK Mainland only. Excluding certain postcodes

Stay up to date with Hall-Fast offers, products and news!