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FAQ

  • Is a GRP roof fire retardant?
    City View Fibreglass supplies specially formulated roofing resins and topcoats with fire certification with no restrictions on their use which is your guarantee for situations where fire safety is a necessity.
  • I want to install a GRP roof, how do I do it?
    While the process for laying a GRP roof is straightforward, there are a few rules of thumb that must be followed before installing a FIBRETECH GRP roof. So it is advisable to attend a training or demo day regularly held at our Cork base or we are able to offer onsite training at an additional cost . Either call us or fill in the contact page to discuss your training requirements.
  • What are the main benefits of GRP roofing?
    GRP has a number of benefits compared to traditional roofing products, especially for flat roofing. There are a number of health & safety benefits from installing a GRP roofing system because GRP products are cold laid and therefore do not require any form of heat treatment, helping to protect installers and the general public. As GRP roofing systems are cold-applied they are not subject to the same prohibitive insurance premiums levied at installers using hot-works. Unlike traditional flat roofing systems, GRP flat roofs are extremely durable and completely waterproof, plus they can be finished in any wide range of colours and include options such as nonslip finishes. The entire area on a GRP roof is encapsulated into one single continuous GRP membrane and there are no seams, joints or welds. It is also completely UV resistant. GRP roofing systems are also highly adaptable allowing conversion of the roof area to include features such as balconies or walkways within the roof area. Special features such as roof lights can also be included within a GRP roofing system. GRP roofing systems can also be used instead of pitched roofs or to make special features. The major benefit of GRP roofing comes from the fact that a high-quality GRP roofing system which is installed correctly should remain leak-free for life.
  • What are the main applications of GRP?
    GRP can be used for a number of applications including roofing, construction, tanks, building products, showers, ponds, pools, architectural features, green roofs, flat roofs (commercial and domestic), vertical cladding, walkways and bay windows
  • What is the difference between Fibreglass and Grp.
    GRP (glass reinforced polyester) is the technical name for what is commonly known as ‘fibreglass’. Originally developed in 1938 for use in insulation, GRP is extremely durable and today is used in a variety of applications across a number of industries. Also known as FRP (fibre reinforced polymer) GRP is extremely versatile, strong and waterproof, making GRP the ideal solution for applications such as roofing systems. The ability to produce different finishes such as nonslip surfaces using GRP, in addition to being able to produce unlimited range of colour options for applications of almost any complexity, means that GRP is now a popular and viable alternative to traditional roofing systems used previously.
  • How does GRP look when finished?
    The surface and colour of a GRP laminate can be modified to your requirements. A choice of smooth or textured finishes can be achieved in any colours from the BS 4800 range.
  • Explain how a warm roof is constructed.
    A bottom deck of ply or OSB2 is fitted on joists covered with a vapour barrier. The insulation (100-150mm) is laid on top with the vapour barrier up the sides of the insulation. Another deck of OSB3 is then laid on top and finally this is covered with fibreglass etc. A number of options are available dealing with vapour barriers and thermal bridging etc.
  • What's the difference between a cold roof and a warm roof.
    Insulation, if needed, is placed in between the joists on a cold roof just over your ceiling. A certain amount of ventilation is needed over the insulation to prevent condensation. On a warm roof a complete sealed layer of insulation is laid ontop of your roof deck and covered again with another roof deck and fibreglass etc. Normally we would place a cold roof over a garage etc and we would recommend a warm roof over living quarters. The warm roof is the preferred option.
  • I want to install a GRP/Fibreglass roof. How do I do it?
    While the process for laying a GRP roof is straightforward, there are a few rules of thumb that must be followed before installing a Tricel GRP roof. So it is advisable to attend a training or demo day regularly held at depot in Cork before attempting to install a GRP roof. Either call us or fill in the contact page to discuss your training requirements.
  • How do I deal with the 25yr guarantee on the resin (as an installer).
    One question that comes up occasionally is the 25yr guarantee on the fibreglass and how to deal with it. It’s a bit complicated to say the least. The system comes complete with a 25-year guarantee on the materials from the manufacturer. It also might come with a matching guarantee from the installer (yourself) that the roof will remain leak free for at least 25 years but that is entirely up to you. To begin with I suggest you take a note of the batch numbers of the resin used and place it on the invoice to the customer for every job you do. If the roof fails, then you are called out to inspect it and you decide whether the materials are faulty or not. If you decide that they are faulty then you must call out Tricel and that’s where you might also need to produce the batch numbers of the resin used. To complicate matters further when the problem arises you might be gone out of business, passed on or even in a home for the bewildered, then your customer has no recourse but to contact Tricel themselves and at least they should be able to produce the invoice showing the batch numbers of the resin used.
  • Is GRP suitable for adverse conditions?
    GRP systems are ideally suited to adverse weather conditions and temperature extremes. As GRP is used to make boats and pond liners, it performs well when exposed to cold climates or heavy rain. GRP systems are capable of delivering maximum protection in excess of 50 years. Whilst GRP may not be suitable for applications above 100°C it will perform well within normal temperature extremes found within global environmental conditions. GRP can withstand dilute acid conditions however it is unsuitable for prolonged immersion in alkaline solutions. A GRP roof is also fully bonded to the surface of the decking boards so it is very resistant to wind uplift.
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