Can you install insulation over my existing insulation?

Yes. If the existing insulation is dry, clean and in suitable condition, it can normally be topped up rather than removed.

Do you remove old loft insulation?

We can remove old insulation where it is damaged, contaminated, heavily compressed or unsuitable to remain in place. This would be assessed before installation.

Will loft insulation cause condensation?

Correctly installed insulation should not cause condensation, but the loft must have suitable ventilation. We assess ventilation and can install felt-lap vents where appropriate.

How long does loft insulation take to install?

Most straightforward domestic loft-insulation installations can be completed within one day, although larger lofts or lofts requiring preparation may take longer.

Can I get an instant loft insulation price online?

Yes. Use our live calculator to enter your loft size and required insulation depth. It will provide an instant estimated price without needing to complete a form and wait for a callback. The final price is confirmed following your free survey.

Do you offer a free survey?

Yes. We can inspect the existing insulation, measure the loft and assess whether additional ventilation or preparation is required.

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Loft Insulation Services

Save Energy & Reduce Your Bills

Warmer Home

Big Bill Savings

Quick Installation

Upgrading your loft insulation is one of the most effective ways to boost your home's energy efficiency. At PMR ECO Insulation, we use high-quality, affordable insulation to keep your home warm, reduce your carbon footprint and lower your energy bills.

Save Up To £330/Year

Lower heating costs by reducing heat loss through your roof.

Quick & Affordable

Professional installation that pays for itself, typically within 2 years.

Warmer, Cosier Home

Eliminate draughts and say goodbye to cold, uncomfortable rooms.

Benefits of Loft Insulation

Properly installed loft insulation can reduce heat loss by up to 25%, making your home more energy efficient and comfortable. Whether you need a full installation or a simple top-up, our team can help.

Is Your Loft Ready For Insulation?

Do you have little to no loft insulation?

Is your house cold even when the heating is on?

Are your energy bills higher than you'd like?

Get a Free Survey

How It Works

01 Loft Survey

Free inspection of your current insulation and ventilation.

Insulation Installed

Loft Ventilation & Condensation Control

High-Quality Knauf mineral wool insulation installed to the recommended depth.

Proper cross-flow ventilation is essential to keep your loft dry and performing efficiently. Without adequate airflow, moisture can build up in the loft space, leading to condensation, damp, and potential damage to roof timbers over time. This can reduce the effectiveness of insulation and create long-term structural issues. Where needed, we install felt lap vents (also known as felt vents) to improve airflow between roof timbers, helping to prevent condensation and protect your property.

Loft Ventilation

02

How Much Loft Insulation Do You Need?

100mm

Q: How much loft insulation do I need?

For most accessible lofts using mineral-wool insulation, the recommended minimum depth is around 270mm. We often install up to 300mm depending on the existing insulation and the requirements of the property.

150mm

200mm

300mm

Price

Loft Size: 30 m²

Estimated Price: £520

Book Free Survey

Includes Materials & Labour

No Hidden Costs

Free Survey & Advice

The amount of loft insulation you need depends on how much is already installed in your home. For most UK properties, the recommended depth is 270mm–300mm to properly reduce heat loss and improve energy efficiency.

If your loft has no insulation, we recommend a full 300mm installation for maximum performance
If you already have around 100mm installed, a 200mm top-up will usually bring it up to standard
If your insulation is older or uneven, we can improve it with a simple top-up rather than a full replacement

Upgrading your loft insulation to the correct level can help keep your home warmer and lower your energy bills.

👉 Use our cost calculator to get an instant estimate based on your loft size and insulation needs.

Frequently asked questions

Professional Loft Insulation for a Warmer, More Efficient Home

We provide professional loft insulation for homeowners and landlords looking to improve energy efficiency, reduce heat loss and make their property more comfortable throughout the year.

Our experienced installers use high-quality Knauf mineral wool insulation, installed to the appropriate depth for your property. Before installation, we assess the existing insulation, loft ventilation and access to make sure the work is completed properly rather than simply adding more insulation on top.

Where required, we can improve ventilation around the eaves to help maintain airflow and reduce the risk of condensation. All installations are carried out with care, with clear pricing, quality materials and a practical approach focused on long-term performance.

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Fast & Efficient

Typically done in less than a day.

Fully Insured

Minimal Disruption

Fully Guaranteed

We keep your home clean and tidy.

All work comes with 25 year guarantee.

Fully insured for your peace of mind.

Recent Articles

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If you're thinking about insulating your loft, one of the first questions you're likely to ask is: How much does loft insulation cost? The answer depends on more than simply the size of your loft. Existing insulation levels, access, ventilation, loft boarding, old insulation and the general condition of the roof space can all affect the amount of work required. In this guide, we explain what affects the cost of loft insulation in the UK, how loft insulation can reduce heat lo

Can You Put New Loft Insulation Over Old Insulation?

In many homes, new loft insulation can be installed over existing insulation without removing everything first. This is commonly known as a loft insulation top-up. However, the old insulation should be inspected before any additional material is fitted. Installing new insulation over damaged, damp or contaminated material can hide problems rather than solve them. The correct approach depends on the depth, condition and type of insulation already in the loft. When can new insu

How Much Loft Insulation Do I Need?

The amount of loft insulation your home needs depends on the material being used, the depth and condition of any existing insulation, and how the loft space is constructed. For most accessible lofts insulated at ceiling level with mineral wool, the commonly recommended total depth is around 270mm. This normally consists of one layer fitted between the ceiling joists and an additional layer laid across the joists. However, simply measuring the insulation is not always enough.