# Zinsser Gardz

Primer, undercoat and sealer · Zinsser

Zinsser Gardz covers 5 to 10 m² a litre, by Zinsser's own figures.
Source: Zinsser, Zinsser Gardz product page, read 11 October 2026.

Zinsser gives no single number of coats for it in the document read for this page.

What it is for, in the maker's words: “Gardz® is a unique water-based sealer for potential problem surfaces” (Zinsser Gardz product page, read 11 October 2026).

## Coverage

Zinsser states 5 to 10 m² a litre. The maker's words: “Coverage: 5 - 10m² per Litre”.
- Bare, rough or absorbent surfaces: A maker's coverage is their best case, on a smooth sealed surface: bare, rough or absorbent surfaces take more.
- A range, not one figure: Zinsser gives a range. An estimate should use the lower figure, 5 m² a litre, so that the answer errs towards enough paint.
- Waste and touch-ups: The tin-by-tin figures add nothing for what stays in the tray and on the brush, or for touching up.

## Coats

The document read for this page gives no number of coats for Zinsser Gardz. Follow the tin's own instructions.

## Tin sizes

| Tin | One coat | Two coats |
|---|---|---|
| 500 ml | 2.5 to 5 m² | 1.25 to 2.5 m² |
| 1 L | 5 to 10 m² | 2.5 to 5 m² |
| 2.5 L | 12.5 to 25 m² | 6.25 to 12.5 m² |
| 5 L | 25 to 50 m² | 12.5 to 25 m² |

Arithmetic on the maker's figure: the litres in the tin times the coverage per litre, with nothing added for waste.

## Where to buy it

The page has the shops' own searches for it, and any link there that is paid for is marked Ad: https://buildbatch.co.uk/products/zinsser-gardz/#where-to-buy. BuildBatch sells nothing and compares no prices.

## Questions

**How much does a litre of Zinsser Gardz cover?** Zinsser states 5 to 10 m² a litre for Zinsser Gardz (Zinsser Gardz product page, read 11 October 2026). A maker's coverage is their best case, on a smooth sealed surface.

**How much does a 5 litre tin of Zinsser Gardz cover?** At the maker's figure a 5 L tin covers 25 to 50 m² in one coat, or 12.5 to 25 m² in two coats. That is the litres times the coverage per litre, with nothing added for waste.

**How many coats does Zinsser Gardz need?** The document read for this page gives no number of coats for Zinsser Gardz. Follow the tin's own instructions.

**What is Zinsser Gardz for?** Zinsser says: “Gardz® is a unique water-based sealer for potential problem surfaces” (Zinsser Gardz product page, read 11 October 2026).

**What tin sizes does Zinsser Gardz come in?** The catalogue lists 500 ml, 1 L, 2.5 L and 5 L. A shop may not stock every size.

## Where the figures come from

- Zinsser, Zinsser Gardz product page (https://zinsseruk.com/products/gardz): coverage and what it is for, read 11 October 2026.

Written with AI tools; not yet checked by a tradesperson. Follow the tin's own instructions.

The page: https://buildbatch.co.uk/products/zinsser-gardz/