10 x Felt Lap Vents Prevents Loft roof Condensation. Attic Space Ventilation

Product Information

Not enough and moisture won’t be able to escape, leading to problems associated with condensation build up. Other measures may need to be in place to ensure that an adequate amount of ventilation is provided for the roof space. Here at DIY Doctor, we offer completely free DIY and construction help and advice to any and all, from professional tradesmen, exactly as they would do it.

This is more involved as you will need access to the roof from outside, and this might need scaffolding, or certainly ladders. Essentially there are two elements to dealing with condensation; the first is to understand where comes from, and the second is how it is removed from your home. The product has been designed as a remedial solution to help overcome the build-up of condensation in the roof space, however like all products that open the felt lap to provide ventilation it does not meet the code of practice BS 5534:2014+A2:2018 6. Our Felt Lap Vents are a refurbishment product designed to increase the amount of ventilation into existing roof spaces.

I’ve found the most effective way to cure loft condensation is to install ventilation so a breeze can enter the loft and pull the moisture out of the loft into the atmosphere (this method works for most lofts in the UK but not “warm roofs”). There are other causes of loft condensation and alternative products to consider (see link at the bottom of this page). The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products. Solution: I’ve used a fine saw to cut the vents down to size, they then fitted into the gap between the roof rafters. When used in combination with proper ventilation materials and permeable roof coverings, roof lap vents are an effective tool for reducing condensation, providing adequate protection to your home.

But keep reading to find out how to install these vents and also why and how loft condensation forms. The vast majority of lofts or attics in this the United Kingdom are cold roofs, and this is where condensation will occur. He previously worked as a project manager and has experience in managing teams of tradespeople and landscape gardeners on both small and medium sized projects. Header tank in loft is warm causing water vapour to vent into the loft (this is a job for a plumber). Updated British Standards are not applied retrospectively to buildings, but if you are experiencing issues, then it's definitely worth investigating some of these measures.If you’ve got condensation issues in your loft it’s now relatively easy to resolve by adding additional loft ventilation. So, for example, if your roof is 8m long, you would need 8m (=8,000mm) multiplied by 10mm =80,000mm2. This is because we use recycled content to manufacture these products as part of our commitment to sustainability and protecting the environment.