Solution: I have cut the vents in half before and only put half a vent into the gap, it then fitted easily. When inserted in between felt in the attic roof, will this product not create a slight opening between each roof tile from the outside? Selecting the amount of airflow, then dividing the roof length by the spacing (in meters) indicted below.

of loft condensation cases can be resolved to an acceptable level by improving the ventilation rather than retrofitting a vapour barrier.Back in November, I noticed a small patch in the corner of the bathroom ceiling that looked a bit damp, but it only appeared when the bathroom was steamed up, so I thought it might be condensation forming from poor loft insulation (ours is rubbish! Loft ventilation comes in many forms but the most common in the UK and Ireland are eaves vents and tile vents. 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.

I have previously published a more in-depth guide to condensation in a loft and that would be a good place to start if you are still having issues after installing lap vents. We could also see that the loft insulation was bunched up in the corner, directly above the damp patch.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.

Pictures show that clearly - day 1 of installing these vents with some very wet areas on the north side of roof and same side in 4 days, almost completely dry. Manthorpe felt lap vents provides an effective solution to increasing the amount of free air ventilation to your roof space and thus preventing condensation. If your roof is poorly ventilated, excess moisture will soon start to build up and start to cause problems such as rot and mould. They tend to only be used in smaller lofts where the cost of heating a large void space will not be too expensive. This myth stems from the same idea as the one that says ventilation allows warm air to escape during winter.

If they installed eaves vents, and I appreciate this sounds silly, but make sure they actually fitted the vents correctly. Job was done in about 30min, very simple, only problem was to reach the right area, so nothing to do with the product itself. Improving the airflow into a loft is the quickest, easiest and cheapest way to remove excess condensation.