# Dulux Wall Primer & Undercoat

Primer, undercoat and sealer · Dulux

Dulux Wall Primer & Undercoat covers up to 8 m² a litre, by Dulux's own figures.
Source: Dulux, Dulux Wall Primer & Undercoat product page, read 11 October 2026.

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

What it is for, in the maker's words: “Its technology will ensure the top coat adheres to the surface, has a uniform colour and improves the coverage so your paint goes further” (Dulux Wall Primer & Undercoat product page, read 11 October 2026).

## Coverage

Dulux states up to 8 m² a litre. The maker's words: “Up to 8m2/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.
- 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 Dulux Wall Primer & Undercoat. Follow the tin's own instructions.

## Tin sizes

| Tin | One coat | Two coats |
|---|---|---|
| 5 L | up to 40 m² | up to 20 m² |
| 10 L | up to 80 m² | up to 40 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/dulux-wall-primer-and-undercoat/#where-to-buy. BuildBatch sells nothing and compares no prices.

## Questions

**How much does a litre of Dulux Wall Primer & Undercoat cover?** Dulux states up to 8 m² a litre for Dulux Wall Primer & Undercoat (Dulux Wall Primer & Undercoat 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 Dulux Wall Primer & Undercoat cover?** At the maker's figure a 5 L tin covers up to 40 m² in one coat, or up to 20 m² in two coats. That is the litres times the coverage per litre, with nothing added for waste.

**How many coats does Dulux Wall Primer & Undercoat need?** The document read for this page gives no number of coats for Dulux Wall Primer & Undercoat. Follow the tin's own instructions.

**What is Dulux Wall Primer & Undercoat for?** Dulux says: “Its technology will ensure the top coat adheres to the surface, has a uniform colour and improves the coverage so your paint goes further” (Dulux Wall Primer & Undercoat product page, read 11 October 2026).

**What tin sizes does Dulux Wall Primer & Undercoat come in?** The catalogue lists 5 L and 10 L. A shop may not stock every size.

## Where the figures come from

- Dulux, Dulux Wall Primer & Undercoat product page (https://www.dulux.co.uk/en/products/dulux-wall-primer-and-undercoat): 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/dulux-wall-primer-and-undercoat/