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  • GRP Roofing vs 3 Layer Felt Method

  • The the greater part of all loft conversions will have a flat roof created to them. The covering which would make them drinking water tight can be accomplished employing many merchandise, with 2 standing out as the industries norm. The very first becoming a 3 layer felt devices and second GRP (glass bolstered plastic).

    Three Layer Felt Procedure

    A few Layer Felt Systems have come a extensive way from the early times. They are no extended laid with incredibly hot bitumen and have stone chippings set on top. They experienced a stereotypical perception they were being only fantastic more than enough for your get rid of or garage. The items employed today are a 3 layer membrane technique, applied with the use of a gasoline gun. These felts appear with a 20 to 30 year manufactures’ assurance and have the capacity to mend them selves with sunlight. Even if they are regularly submerged in water, this will not have an impact on their performance. This application is favoured on a loft conversion as the products is fully bonded to the building and has a audio deadening assets, which is crucial with rainfall.

    GRP Roofing

    GRP roofing has been on the marketplace for a quantity of a long time, but would seem to have come to be modern in not long ago, not only owing to the product rate slipping below the value of the 3 layer process, but additional importantly the relieve of application. It has turn out to be so easy to set up it could be classed as a Diy item. This solution, if fitted the right way, will also carry a 20 to 30 year assurance. The product or service is essentially a fibre course pores and skin laid above a thin fibre membrane, with reason produced corners and drips that are caught alongside one another. Even though this can be utilised on a loft conversion, the major downside is the sound it generates when it rains. As 99% of lofts conversions are bedrooms, we would not advise the use of GRP. On top of that, as this products is not mounted but laid on the roof decking, it is also vulnerable to lifting in higher winds.


    Based mostly on previous encounter the three layer felt technique out performs the GRP on several concentrations.

    1. It require’s a educated BRP qualified for installation
    2. It is much less noisy and additional secure in heavy rain / wind
    3. It’s more cost-effective in the lengthy operate
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