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Roof Ventilation

Good roof ventilation is critical for preventing the condensation build up and damp that can lead to serious damage, and our range of roof ventilation solutions, including soffit vents, tile vents and dry ridge systems, will do just that.

 

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  • Floplast Hollow Soffit White H300 300mm

    Floplast Hollow Soffit White H300 300mm

    Floplast Hollow Soffit White H300 300mm is a rigid PVC-U Hollow Soffit in 300mm width providing a cost effective and alternative to cellular boards. They have an impermeable outer skin and are closed-cell composition which is unaffected by moisture or UV...
  • Floplast Corner Joint White RT4 300 x 42mm Floplast Corner Joint White RT4 300 x 42mm

    Floplast Corner Joint White RT4 300 x 42mm

    The Floplast Corner Joint White RT4 300 x 42mm is designed to give a neat finish to the corner of the board. Durable, long lasting and low maintenance. The 20 year performance and colour guarantee indicates that this product will not easily wear away.
  • Floplast Internal Corner Joint White RT7 300 x 42mm Floplast Internal Corner Joint White RT7 300 x 42mm

    Floplast Internal Corner Joint White RT7 300 x 42mm

    Floplast Internal Corner Joint White is a non-corrosive and low maintenance jointing system that gives a neat finish to the internal corner of the board. It is a durable, high quality system with a 20 year performance and colour guarantee.
  • Floplast Double Ended Corner Joint White RT5 500 x 35mm Floplast Double Ended Corner Joint White RT5 500 x 35mm

    Floplast Double Ended Corner Joint White RT5 500 x 35mm

    Floplast Double Ended Corners Joint RT5 are used to cover a 90 degree corner joint between two boards. These can be cut down to any length to suit boards from 250mm to 150mm and provide a tidy finish.
  • Floplast In-Line Joint White RT1 300 x 42mm

    Floplast In-Line Joint White RT1 300 x 42mm

    Floplast In-Line Joint White RT1 is the perfect way to give a neat finish to the in-line joint of 2 boards. It is made from a durable, low maintenance material that will last over 20 years.
  • Floplast Double Ended In-Line Joint White RT2 500 x 35mm

    Floplast Double Ended In-Line Joint White RT2 500 x 35mm

    This flexible, double ended, white in-line joint is designed to cover a straight joint between two boards. The floplast joint can be cut down to any length to suit boards from 250mm to 150mm. This product is also available in FloPlast woodgrain effect...
  • Dry Verge System Left Hand Grey

    Dry Verge System Left Hand Grey

    Marley (Left Hand) Grey Dry Verge is designed to be strong and water tight, suitable for use with all large interlocking tiles made from concrete. It finishes the verge details securely. Each unit is easy to install with roof pitches up to 55 degrees and...
  • Dry Verge System Right Hand Grey

    Dry Verge System Right Hand Grey

    The Marley (Right Hand) Grey Dry Verge is a mortar-free solution for use with large interlocking tiles that are made from concrete. The Verge is weathertight, durable and strong, ensuring a secure finish to your verge detail. Easy to install, the Marley...
  • Universal Dry Verge Starter Kit

    Universal Dry Verge Starter Kit

    The Marley Universal Starter Kit is a dry verge system that is weather tight, can be mechanically fixed, and is suitable for use with large concrete made interlocking tiles. The kit can be used for two purposes: either as a starting place for your dry...
  • Universal Tile Vent

    Universal Tile Vent

    Marley Eternit's Universal Tile Vent is designed to be used with mechanical, natural and soil pipe ventilation, and can be use alongside all of the large and medium-sized interlocking tiles sold by Marley. The Tile Vent is easy to install and should be...
  • Floplast Universal Fascia Board White

    Floplast Universal Fascia Board White

    £20.00 - £41.67 (Ex VAT)
    £24.00 - £50.00 (Inc VAT)
    Floplast Universal Board is a high quality Reveal End Fascia with a smooth, white finish. In addition, it can be used as a cover board. This product has been designed to work with various types of windows and doors, with several widths available...
  • Floplast Multi-Purpose Board Round Edge Single White

    Floplast Multi-Purpose Board Round Edge Single White

    £18.00 - £38.48 (Ex VAT)
    £21.60 - £46.18 (Inc VAT)
    Floplast multi-purpose board is a cost effective, white PVC soffit board with rounded edges. Suitable for a variety of uses such as soffit, facia and general purpose boarding.
  • Floplast Mammoth Board Single Leg White

    Floplast Mammoth Board Single Leg White

    £36.87 - £52.48 (Ex VAT)
    £44.24 - £62.98 (Inc VAT)
    For sheer strength and rigidity, nothing beats the 18mm Mammoth Board! This is a heavy duty product that does not require a backing board to support it, because of it's rigid linear strength and thickness.

Roof Ventilation

By creating an effective air flow, our range of easy to install soffit, tile or slate vents let warm air from the inside flow outside and bring cooler air inside, which minimises condensation formation.

For cold flat roof ventilation, securely fix roof edge tiles and prevent leaking with dry verge units and roll out dry ridge systems, and ensure dampness does not permeate walls by using cavity trays.

Remember that roofs don’t just need protection from the elements – keep birds and insects away from roof tiles with eaves comb fillers.

For expert advice and guidance on the best roof ventilation options, please contact your friendly local Howarth branch

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Frequently Asked Questions

How to ventilate a flat roof?
To ensure sufficient ventilation, enough space must be provided to allow for the movement of air, preventing the risk of condensation forming within the roof. To do this, a ventilation gap of 50mm must be in place between the insulation and the underside of the flat roof.
How does roof ventilation work?
Ventilation works by preventing warm air condensing within the loft. It removes the damp air and creates gentle movement of air, helping to prevent damage to possessions and mould from forming on the ceilings and timbers.