Loft condensation is particularly common during the colder months. You might notice water droplets underneath roofing felt, damp timbers, wet insulation or a musty smell.

So, what causes it, and what can you do about it?

What Causes Loft Condensation?

Everyday activities such as showering, cooking and drying clothes add moisture to the air inside your home.

When warm, moisture-filled air reaches colder surfaces in the roof space, condensation can form. The problem can become more noticeable during autumn and winter as roof temperatures fall.

Poor or blocked ventilation can also contribute to moisture building up.

What Should You Check?

If you've spotted condensation in your loft, start with a few simple checks:

• Check for roof leaks – Water in the loft isn't always condensation. Look for damaged tiles or other signs of water ingress.
• Check existing ventilation – Make sure soffit, eaves or roof vents aren't blocked.
• Check your insulation – Insulation shouldn't obstruct required ventilation paths at the eaves.
• Check extractor fans – Bathroom and kitchen extractors should discharge outside, not into the loft.

Finding the source of the moisture is important before simply adding more ventilation.

Can Roof Ventilation Help with Condensation?

Where additional ventilation is required, there are several options depending on the roof.

Soffit and over-fascia vents can provide ventilation at the eaves.

Tile and slate vents allow airflow through the roof covering. The correct vent needs to be matched to the roof tile or slate and installed in a suitable position.

Felt lap vents can provide a useful retrofit option for certain existing roofs, introducing additional airflow through suitable laps in the roofing underlay.

Which Roof Vent Do I Need?

There's no single ventilation product that's right for every roof.

Before choosing, consider your roof construction, tile or slate type, roof pitch, existing ventilation and where additional airflow is required.

At Vents Direct, you'll find specialist roof ventilation solutions including tile vents, slate vents, soffit vents, over-fascia vents and felt lap vents to help you find the right option for your roof.

Browse our roof ventilation range to find the right solution for your project.