FGS Rubber Roofs 4 u, Warm Deck Roof (EPDM) Installations All over the Country

Rubber Roofing

FGS Rubber Roofs 4 u have been installing rubber roofs for many years and as part of that installation we have in the past installed felt roofs with bitumen based products.

It’s inevitable when a felt roof gets old and you come to change the fascia boards that the felt around the edge will tear and because of that we quite often get the job of removing the felt roof and installing a new one. Warm Deck Roof

The call for longer lasting maintenance free products has encouraged a positive change in the industry.

We install an EPDM membrane system that can genuinely claim to have a life expectancy in excess of 50 years

Our rubber roof system is fully BBA certified and is THE EPDM rubber membrane to install for both large and small flat rubber roofs. Classic Bond EPDM One-Piece is produced by the people who invented rubber roofing back in the 1960′s!

Carlisle Syntec is the first manufacturer to exceed 10 billion square feet of EPDM membrane production.

The One Piece Rubber Roofing system does exactly what it says. Using this system your rubber roof has NO JOINS at all. One sheet of rubber covers your roof and is simply bonded in place using water based deck adhesive, trimmed to size and finished off with the correct gutter, edge and up-stand trims.

We get our high quality materials for Rubber Roofing from Rubber 4 Roofs Ltd
epdm Roofing

Installation

There are several ways we can install the rubber membranes but you need a flat surface and cannot just be glued down to an existing roof.Epdm Rubber Roofing
The basic installation is to either remove all of the existing roof back to the joists and then install 18mm plywood sheets or if the roof is sound we can install the sheets directly to the original roof.

Depending of the use of the room below denotes how much insulation is required and where it is installed. A garage roof may not require insulation but a utility, kitchen or other similar room will require up to 125mm of insulation.

If you wish your rubber roof to be insulated we can install a Celotex or Xtratherm sheet which are manufactured in various thickness but even a 50mm sheet will improve your insulation and UV ratings immensely.

The insulation will placed down on the original roof and the 18mm plywood will be secured through into the existing roof trapping the Celotex like a sandwich.

Now we have a nice flat stable surface we can lay the rubber membrane down on the plywood sheeting. Glue is then applied to the plywood and the rubber membrane us rolled and brushed so there are no air bubbles trapped.

Once the membrane has been installed special PVC trims are installed around the roof and a gutter where required.
The membranes come in several thicknesses depending on the amount of traffic to the roof. For a domestic flat roof or a dormer roof then a 1.14mm membrane would be more than adequate.

For industrial units or where people will be walking on quite regularly we install a thicker membrane which is 2.5mm thick called Resitrix.

The Warm deck roof design is the modern construction method for flat roofs and is preferred wherever this option is possible.

Solid (Closed Cell) roof insulation such as Kingspan or Celotex is placed on top of the roof deck rather than in between the rafters. A vapour barrier needs to be installed to reduce condensation in the roof structure. The insulation is normally mechanically fixed in place using the correct screw fixings.

EPDM Warm Deck

The Warm deck roof design is the modern construction method for flat roofs and is preferred wherever this option is possible.
Solid (Closed Cell) roof insulation such as Kingspan or Celotex is placed on top of the roof deck rather than in between the rafters. A vapour
barrier needs to be installed to reduce condensation in the roof structure. The insulation is normally mechanically fixed in place using the correct screw fixings.
Rubber Roofing

We have found that the cost effective way to construct a warm roof deck is as follows:

  • Minimum 18mm ply or OSB deck
  • Vapour barrier or existing waterproof membrane
  • Kingspan, celotex or Xtratherm insulation
  • Overboard the insulation with an 18mm ply or OSB board
  • Screw the 18mm board and insulation down in to the existing roof deck
  • Install EPDM rubber roof.

Roof Deck: A minimum thickness of 18mm is required subject to joist spans. Replace any rotten deck as necessary.

Vapour Barrier: Existing membranes such as BUR or felt can be left in situ and will provide a vapour barrier as long as the roof deck is in good order and does not need to be replaced due to water damage.

Insulation: The minimum U value for a flat roof is 0.18W/m2K. Assuming a worst case scenario as above, 120mm thickness of Kingspan foil backed TR26 would be sufficient. To achieve the minimum 0.18W/m2k.

Overboard: If the insulation is to be mechanically fixed to the roof deck using screws then an 18mm ply overboard board will accept a countersunk screw head. As an alternative Kingspan produce an insulation board with a 6mm ply already fitted to the insulation. This will not accept a countersunk screw so can be secured either with a dome head screw or bonded to the existing roof covering with PU Glue.

Mechanically fixed insulation we have assumed that galvanized steel screws have been used to secure the overboard deck and insulation. A 0.2 fixing correction has been applied to the thermal calculations due to a steel screw acting as a cold bridge.

Install EPDM Rubber roof: Install the EPDM rubber roof as per our standard instructions.

Building Regulations: Please consult Part “L” building regulations as the information printed above may have been superseded.

Building Regulations We have attached a link here from London Flat Roofing explaining a little more about your obligations as a roofer and home owner under Part L Building Regulations in relation to flat roofing:

Building Regulations Part L Explained ref: Flat Roofs
http://www.youtube.com/watch?v=NSWPVQr-R_o

Rubber Roofs