12 x Felt Lap Vents, Loft Vents for Condensation, Roof Ventilation Lap Vents, Felt Lap Vents Prevents Loft Roof Condensation, Keep Attic Space Ventilation Airflow

These lap vents are a simple yet effective solution for improving loft ventilation. The pack of 12 covers a good area, and each vent provides strong airflow—exactly what I needed to tackle condensation in the winter months. Since installing them, the loft feels much drier and there’s been a noticeable drop in dampness. They’re easy to fit—just push them into the felt joins without needing special tools. The arched design feels sturdy and fits neatly between joists, even in tighter spaces. I also appreciate that they work with standard joist centres (400mm to 600mm), which suited my roof perfectly. If you're struggling with loft moisture or poor airflow, these vents are a cost-effective fix. Highly recommended for keeping your attic space dry and better ventilated.

We fitted these and they’ve worked straight away. The loft no longer has condensation and the air is free flowing. Wish we’d bought these years ago!

Good quality easy to fit. Now in situ in loft so it’s wait and see if it makes a difference, improvement to condensation that comes off felt. Not that cold yet!!

Great for allowing more air flow in roof space, these cured my condensation problems.

Simple device. Expensive for what is essentially a piece of plastic but, you pay for the result, not the item I this case. After 1 week, 90% of issues resolved. Highly recommended

I was really skeptical when I bought these. It seemed too easy to fix a long-standing problem. But...they sorted the condensation issue out within a couple of days. There has been condensation in our loft every autumn and winter since we moved in 26 years ago, and we paid a lot of money to a company to fit vents. But the problem didn't go away to the extent that boxes in the loft had wet splash marks on them. So I installed these, which took about five minutes, and two days later the condensation had gone. Fabulous product.

Not used or fitted these yet but a friend has used them and said they work really well in loft

Working well. Got these to stop moisture build up on the felt when temperatures are below freezing. As you can see a few hours after putting one in the air flow has removed most of the moisture. Only improvement I can see is making them cheaper as they are only plastic and should be very easy to mass produce. 30/40p each would be better than £1.13.