Mould is one of the most common and frustrating problems reported by tenants – especially in older UK properties with poor insulation and ventilation.
It’s more than just unsightly: it can trigger health issues, damage paint and plaster, and become a costly ongoing battle for landlords.


🧾 What Are Tenants Really Complaining About?

When tenants mention mould, condensation, or “cold walls”, they’re really talking about thermal inefficiency:

  • Cold external walls attracting moisture

  • Poor airflow combined with everyday humidity

  • Lack of thermal barrier = ideal mould conditions

Cleaning the mould is a temporary fix.
Painting over it? Still temporary.
What you need is prevention.


✅ The Long-Term Fix: BLOKTHERM® INTERIOR

BLOKTHERM® INTERIOR is a thermal insulation coating designed specifically for indoor use.
It looks like paint but works like a shield – reflecting heat back into the room and warming up wall surfaces, making it much harder for mould to grow.


Why Landlords Choose BLOKTHERM:

  • Creates a thermal barrier – raises surface temperatures

  • Reduces condensation on internal walls

  • Helps eliminate existing mould problems – and prevents recurrence

  • Easy to apply with roller or spray

  • Breathable and non-toxic – safe for tenants, great for long-term use

  • UKCA certified – tested and approved for use in the UK market

This certification confirms compliance with UK safety, health, and environmental standards – a reliable choice for professional landlords.


📦 Suitable for:

  • Rental flats and HMOs

  • Bathrooms, kitchens, bedrooms – anywhere damp loves to live

  • Refurbishments or between-tenancy upgrades


🔗 Learn more or order now:

👉 BLOKTHERM® INTERIOR – Thermal Insulation Coating for Interior Walls


A one-time application could mean years of peace of mind – for both you and your tenants.
💡 Instead of reacting to mould… prevent it.


Make your rental properties warmer, safer, and hassle-free.
— Team TopTherm

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