Zinsser Gardz High Performance Sealer Paint

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

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. Always follow the manufacturer instructions found on the tin.

Q. Can Gardz be applied to new drywall?

A. Yes, this will penetrate and seal when applied onto new or damaged dry walls.

Q. Can Zinsser Gardz seal and or cover stains?

A. No. we would advise using Zinsser Cover Stain to seal any stains.

Q. Can Zinsser Gardz be sprayed?

A. Yes! It can be applied through a sprayer which makes this paint ideal for larger projects of harder to paint areas such as ceilings.

Q. Can I paint direct over Zinsser Gardz?

A. Once Gardz is dry it is compatible with most types of primers and topcoats, you can apply both water-based and solvent-based products.

Delivery - 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 of Tinted Products - Tinted paints are dispatched in line with our express order process, shown below. However, due to their bespoke nature, please allow up to an additional 5 working days to accommodate any potential courier delays or delivery issues before receiving a refund or replacement.

We strongly suggest customers avoid booking tradespeople until they receive their order. Next Day Paint will not be held liable for any costs incurred due to order processing errors, delivery delays, or other issues that may result in financial loss.

Delivery Options

Express Shipping - £3.99

Order by: 3pm, Monday - Sunday

Expected delivery: Next working day, 8am - 9pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following day

AM Delivery - £12.99

Order by: 2pm, Monday - Sunday

Expected delivery: Next working day by 2pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following AM

Late Cut-Off - £5.99

Order by: 4pm, Monday - Friday 

Expected delivery: Next working day, 8am - 9pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following day

Saturday Delivery - £9.95

Order by: 2pm, Friday 

Expected delivery: Saturday, 8am - 9pm

Standard Delivery (Out of Zone Postcodes Only) - £6.99

Order by: 3pm, Monday - Sunday 

Expected delivery:  3-5  working days, 8am - 9pm

Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following day

We do not deliver to the Channel Islands or the Republic of Ireland

Certain postcodes delivery times and charges may vary please head to the cart to see your available delivery options.

Returns

We offer a 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. Please note return for unwanted item is at your own expense.

Contact us as soon as possible to inform us you will be returning the product either by a contact form or by calling our team on 0161 960 0217.

All tinted paint purchases are final and non-refundable. If you're unsure about your selection, please refer to the product listing or contact us for guidance before ordering. Once mixed, tinted paints cannot be returned or refunded, regardless of delivery delays or changes in circumstances.

While we aim to meet delivery timelines, we are not responsible for delays caused by couriers, weather, or other external factors.

We recommend ordering samples or colour charts before purchasing. While we strive to represent colours accurately, screen settings and surface types can affect appearance. Opened tins cannot be returned due to dissatisfaction with colour.

For non-tinted products, we offer a 14-day money-back guarantee. Items must be returned unused, in original condition and packaging, at your own expense.

Damaged Paint

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

Incorrect Item

If we have sent you a different item from what you ordered, we will be happy to organise an exchange for the correct goods at no extra charge to yourself, please get in touch to organise this.

Faulty Items

Faulty items can be refunded or exchanged within 30 days. All returns are tested, and if no fault is found, no refund will be issued you'll have the option to have the item returned. For faults discovered after 30 days, please contact the manufacturer for further support.