Many homeowners don’t initially understand the difference between an approved contractor and a standard painter — until it’s too late. Wethertex coatings are high-performance systems that require precise preparation, layering, and application to function as intended.

Here’s why approval matters so much:

1. Manufacturer-Backed Guarantees

Wethertex warranties only apply when:

- The full system is used

- The installer is approved

- The application meets technical guidelines

If a non-approved contractor applies the product, the manufacturer will not support any failures — no matter how good the contractor claims to be.

2. Coating Longevity

Wethertex systems achieve their 15–20+ year lifespan only when:

- The correct primers are used

- The coating is applied at the correct thickness

- Drying times and weather conditions are controlled

- All cracks and structural issues are repaired first

Approved installers understand how each of these variables affects durability.

3. Proper Substrate Preparation

Preparation is everything. Over 90% of coating failures in the UK are due to poor preparation, not defective products.

Approved contractors follow strict prep processes, including:

- Biocide wash

- Render diagnostics

- Crack stitch repairs

- Blown render removal

- Moisture testing

This prevents future issues such as flaking, blistering, cracking, and damp.

4. Access to the Correct System Specification

Different substrates require different coating systems. For example:

- Old pebble-dash → needs deep-penetration primers

- Sand/cement render → needs flexible body coats

- Brickwork → may require Pliolite-based systems

- Previously painted masonry → must be tested for adhesion

An approved installer will correctly specify the system for long-term success.