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Flat Roof Calculator

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3 quick and simple steps to create your flat roof kit
EPDM Roof Kits

EPDM Roof Kits

EPDM is a synthetic rubber roofing membrane which is extremely tough and durable. EPDM rubber roofing has wide industry recognition for being an instant long lasting flat roofing solution that Architects, contractors and roofing consultants all come to depend on.

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GPR Roof Kits

GPR Roof Kits

Our GRP roofing kits are applied cold on site, giving you a flexible weatherproof finish that is seamless and resists most weather conditions without issue. Comes with a 25 year guarantee but can last over 30 years without any visible signs of damage.

Launch GRP Calculator
  EPDM GRP (fibreglass)
Does the product require a trained installer? No Our EPDM Rubber Roof Kits come complete with all the tools and instructions necessary if you wish to carry out the work yourslef. We also have how to videos so you can see exactly how its done. No Our EPDM Rubber Roof Kits come complete with all the tools and instructions necessary if you wish to carry out the work yourslef. We also have how to videos so you can see exactly how its done.
Cost Both EPDM and GRP flat rooking kits are similar in cost but the GRP (fibreglass) system can be more time consuming to install due to extra preperation
Life Expectancy  EPDM can last up to 30 years if maintained properly GRP roofing can last up to 30 years if maintained properly
UV Resistance Yes, EMPD rubber roof membranes are manufactured to be UV stable as standard Yes, however this is providing the GRP resins are mixed correctly on site before applying 
Good Flexibility  Yes, EMPD membranes are well renowned for there flexibility. They can strecth up to 300% without cracking or spliting.  No, GRP roofs allow for only a small amount of movement through expansion and contraction. If applied to thick and a lot of movement occurs, cracks may develop
Strength  BOTH EPDM and GRP flat roof surfaces are strong a durable 
Fire Retardant Yes Yes
Seemless Installation  Yes, our EPDM roof kits will be supplied in one sheet depending on the size. Yes, GRP roofs will be completely seemless as the Liquid will be applied on site
Can they be repaired quickly and easily Yes Yes

What is EPDM Rubber Roofing?

EPDM is a synthetic rubber roofing membrane which is extremely tough and durable, its main composition ingredients are ethylene and propylene derived from natural oil and gas. EPDM is a very versatile flat roofing system which is used on a wide variety of buildings such as domestic, agricultural, commercial and industrial to name a few.

The EPDM synthetic rubber roofing membrane can be supplied in a variety of widths, lengths and thicknesses to suit your requirements. Our EPDM calculator does the work for you, simply enter the dimensions and choose the trims required for each side and within seconds you can have a made to measure EPDM rubber roof kit ready to be ordered and delivered within a few days.

EPDM rubber roofing has wide industry recognition for being an instant long lasting flat roofing solution that Architects, contractors and roofing consultants all come to depend on. If you install an EPDM rubber roof, like the architects and consultants, you can be sure to have a flat roof that can last up to 30 years and still outperform other roofing materials.

So, try our EPDM rubber roof calculator today for a fast no obligation quote for a complete roof kit, or call Roofing Megastore on 01295 565565 to discover more about EPDM roofing.

Where can EPDM Roofing Be Used

We’ve created a list below to show you where EPDM can be used.

  • Flat roof extensions
  • Garage roofs
  • Shed Roofs
  • Green Eco Roofs
  • Flat Garden Roofs
  • Outbuildings
  • Beach Huts
  • Tree houses
  • Garden Building and Offices
  • Dormer Window Roofs
  • Bay Windows
  • Orangery
  • Re roofing Flat roofs
  • Warm Deck roofs
  • Cold Deck roofs
  • Many more!
Launch EPDM Calculator

What is GRP or Fibreglass Roofing?

GRP flat roofs, or otherwise known as Glass Reinforced Polyester (fibreglass roofing) is a flat roof system that is cold applied on site. This flat roof system achieves a completely seamless finish, remaining flexible and weathertight and also resistant to frost, water and heat.

Once the GRP flat roof is applied you will be left with a very impressive architectural finish that will last for years to come if maintained properly. Most fibre glass roofing systems can last up to 30 years with no visible sign of wear or damage.

The technology in Fibreglass flat roofs has advanced tenfold over the last few years and the products produced give perfect weather protection for any flat roof. GRP roofing products are suitable for DIY as well as tradesman so even the first time user can achieve an expert finish without compromise.

Fibreglass flat roofing materials must be laid onto a dry deck in dry conditions and not below 5 degrees centigrade.

So, try our GRP flat roofing calculator today for a fast no obligation quote for a complete roof kit, or call Roofing Megastore on 01295 565565 to discover more about EPDM roofing.

Where can GRP Roofing Be Used

We’ve created a list below to show you where Fibreglass flat roofing systems can be used.

  • Flat roof extensions
  • Garage roofs
  • Shed Roofs
  • Outbuildings
  • Beach Huts
  • Tree houses
  • Garden Building and Offices
  • Dormer Window Roofs
  • Bay Windows
  • Orangery
  • Re roofing Flat roofs
  • Warm Deck roofs
  • Cold Deck roofs
  • Many more!
Launch GRP Calculator
Feefo Reviews Average Customer Rating 4.4
  • Excellent, I will be using them again.

    Very easy to use website with a great price product. Delivery was a bit slow at 10 days. Delivery driver was very good and called before coming.

  • Great service, phoned up and they were able to help me choose the right sheet for my project.

    Dave Hardy
  • great products, great prices and great people

    Greg Matthews
  • 10 out of 10

    This is the 10th time i have used Roofing Megastore and I have to say they are brilliant. Using the website is easy, you get a confirmation email and

    Jordan Reed
  • best prices, best service, fastest delivery

    Great service. Helped me figure out everything I need including all of the glazing bars and fixings. Products delivered the next day and they are also

    Wayne Williams
  • Quick service at very cheap prices

    Brilliant service great priced

  • Enquired about Tapco tiles - informed about Easy slate tiles (wanted black colour). Purchased the easy slate. When we received them they were misshape

    Diana Sonnex
  • Great service

    We found the website easy to use and after placing the order were kept informed of delivery date and time. The delivery man was very friendly and help

  • A pleasure to do business with Roofing Megastore

    From placing my order to receiving the roof tiles all was to my satisfaction and the tiles look authentic

    Alex
  • Pleasure doing business

    Transaction was easy; delivered on time ; well packaged; product as described

  • Excellent easy service

    Arrived exactly when they said it would

    Neil Williams
  • Great products delivered on time at a really good price.

    Ian Laundy
  • Very good service and delivery will use again if I need any roofing products

    Ricky Trowell
  • Excellent service goods actually arrive the day before they were due. Great price can recommend.

    Anthony Clarke
  • Quality service and quality products

    Very helpful service ordered my polycarbonate sheets over the weekend and was very happy to receive them in only 2 days, it even came with extra tape

    Alice Parkland
  • Above and beyond!

    Fantastic service! Asked if I could get my roofing sheets next day and Roofing Megastore managed to deliver with no extra charge

    Terry
  • Great service great product great value for money.

  • Good value, efficient service, easy to shop, prompt delivery

    Great product, good value, good service, delivered on time, efficient and effective. Helpful advisory service and video tutorial

  • Most helpful, both in service and delivery. Will use Roofing Megastore again in 15 years when the guarantee runs out.

  • Good service

    Very helpful staff with good knowledge of the products. Excellent website and when the delivery guy messed up they sorted it out straight away for me.

    Steve Coleman
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