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. In new buildings, there are building regs that specify exactly how a roof space should be ventilated. If the system is simply a combination of vents with no thought or design, you could actually do more harm than good. Solution: I’ve used a fine saw to cut the vents down to size, they then fitted into the gap between the roof rafters. This is because we use recycled content to manufacture these products as part of our commitment to sustainability and protecting the environment.

This enables us to personalise our content for you, greet you by name and remember your preferences (for example, your choice of language or region). So any heat in the house would rise up and warm the loft area making it less likely that any water vapour that hadn’t been removed by the draughts in the house would condense in the loft. We ask an expert with qualifications in the relevant area to fact-check and review the content, which we update accordingly, if applicable. Daniel is a qualified landscape gardener and has many years of experience in this field and also in construction.Every winter, people go into their lofts to put away items they won’t need until next year or to take out the Christmas decorations. Usually fitted retrospectively to properties with additional loft insulation recently installed, the Felt Lap Vent helps to combat the problem of condensation build up in any roof space with a lapped felt/membrane construction. 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. The product will not meet the requirement for roof ventilation solely on its own, it will only provide airflow through the felt laps. As well as the options provided below, you can choose to restrict or block cookies through your browser settings at any time.

Loft ventilation comes in many forms but the most common in the UK and Ireland are eaves vents and tile vents. Old drafty timber windows allow moisture to escape from the home, and if you replace them with airtight modern windows, the moisture levels in the home and also the loft will increase, and condensation is more likely to form. If you’ve checked all the above and decide that you do need additional ventilation you could have circular soffit vents fitted.

Don’t forget: It’s normal to see a little bit of condensation after you’ve created moisture in the home (cooking, bathing, showering), especially when it’s very cold in the loft.

But it’s actually colder climates that benefit the most from an effective roofing ventilation system. PO Box, Afghanistan, Albania, Algeria, American Samoa, Andorra, Angola, Anguilla, Argentina, Armenia, Azerbaijan Republic, Belarus, Benin, Bhutan, Bosnia and Herzegovina, Botswana, British Virgin Islands, Burkina Faso, Burundi, Cameroon, Cape Verde Islands, Central African Republic, Chad, Channel Islands, Comoros, Cook Islands, Côte d'Ivoire (Ivory Coast), Democratic Republic of the Congo, Djibouti, Equatorial Guinea, Eritrea, Ethiopia, Falkland Islands (Islas Malvinas), Fiji, French Polynesia, Gabon Republic, Gambia, Georgia, Ghana, Greenland, Guam, Guinea, Guinea-Bissau, Guyana, Haiti, India, Iraq, Isle of Man, Isle of Wight, Kazakhstan, Kenya, Kiribati, Kyrgyzstan, Laos, Lebanon, Lesotho, Liberia, Libya, Macedonia, Madagascar, Malawi, Mali, Marshall Islands, Mauritania, Mauritius, Mayotte, Micronesia, Moldova, Mongolia, Montenegro, Morocco, Mozambique, Namibia, Nauru, Nepal, Netherlands Antilles, New Caledonia, Niger, Nigeria, Niue, Northern Ireland, Palau, Papua New Guinea, Puerto Rico, Republic of the Congo, Russian Federation, Rwanda, Saint Helena, Saint Pierre and Miquelon, Saint Vincent and the Grenadines, San Marino, Scilly Isles, Scottish Highlands, Scottish Islands, Senegal, Serbia, Seychelles, Sierra Leone, Solomon Islands, Somalia, Suriname, Svalbard and Jan Mayen, Swaziland, Tajikistan, Tanzania, Togo, Tonga, Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda, Ukraine, Uzbekistan, Vanuatu, Vatican City State, Venezuela, Virgin Islands (U. This is usually due to missing insulation under the roof tiles which causes cold spots where condensation forms.

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. Ventilation vents are an essential part of every roof, but like most things, you need to have the right amount for your home. A vapour barrier is a plasticky felt-like material that is laid above the ceiling plasterboard and is designed to let air and heat into the loft while blocking moisture/vapour. Simply flex the tray at crease and position into eaves between rafters from inside the loft with the ridges facing towards the underlay.